Fred and his colleagues believe that as the pressure eased, the failures also decreased and stimulated the various earthquakes that are likely to be noticed in New Madrid.
What is Fred and his study?Fred and his study colleagues came to the conclusion that the weight of the soil above the speech was retained. The tension that this scenario created in the area after investigating the source of the failure in New Madrid and the effects this creates.
However, the river that ran through this area started to take away the materials above the ground, which gradually reduced weight and pressure.
Therefore, according to Fred and his colleagues, the different earthquakes that are expected to be felt in New Madrid were sparked by the failures that also diminished as the pressure subsided.
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Pls answer the question OR ELSE... You will step in a huge pile of gum, thereby ruining your shoes!
This is what you call a reactant that you have enough of. The one that DOES NOT run out.
Question 2 options:
Excess Reactant
Limiting Reactant
Answer:
Excess Reactant
Explanation:
Limiting Reactant is the reactant the runs out first.
Why does ear escape from a tire when a tire valve is opened
Air escape from a tire when tire valve is opened because the pressure from the weight of the car is forcing the already pressurized air out .
Why does air escape from tire when tire valve is opened?When air is filled in tires, it get into more compact area than the outer atmosphere, therefore particles in tire are close to each other and exert pressure continuously on tire walls to get out of it. Thus, material of the tire need to be pressure resistant as much possible.
After opening the tire valve, air starts leaving with huge sound as strain outside the tire is weaker than that inside the tire. Molecules strike with the same force on larger area and pressure starts diminishing.
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Note: The question given on the portal is incomplete. Here is the complete question.
Question: Air leaves a tire when the tire valve is opened because
A. the pressure outside the tire is lower than the pressure inside the tire.
B. the pressure outside the tire is greater than the pressure inside the tire.
C. the temperature is higher outside the tire than inside the tire.
D. there are more gas particles outside the tire than inside the tire.
Gaseous iodine pentafluoride, IF₅, can be prepared by the reaction of solid iodine and gaseous fluorine: I₂(s) + 5F₂(g) → 2IF₅(g) A 10.00 L flask is charged with 15.0 grams of I₂ and 2.00 atm of F₂ at 25 °C. The flask is heated to 100 °C until one of the reagents is completely consumed. What will be the percentage of IF₅ (by mole) in the final product mixture? (Assume ideal gas behavior).
Answer:
The percentage of IF₅ (by mole) in the final product mixture will be 50%. This is determined by the stoichiometry of the reaction, the given molar mass of the reactants, and the ideal gas law.
Explanation:
What are the molecular weights of the following compounds? 1. MgCl₂ 2. (NH4)SO4
The molar mass of compound of magnesium chloride is 95.211 g/mole while that of ammonium sulfate is 132.14 g/mole.
What is molar mass?Molar mass of a compound or a molecule is defined as the mass of the elements which are present in it.The molar mass is considered to be a bulk quantity not a molecular quantity. It is often an average of the of the masses at many instances.
The molecular mass and formula mass are used as synonym for the molar mass.It does not depend on the amount of substance which is present in the sample.It has units of gram/mole.
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A particular frost-free refrigerator uses about 795 kWh of electrical energy per year. Express this amount of energy in J, kJ , and Cal.
The amount of energy used by the refrigerator is given in J, kJ, and Cal as follows:
In J = 2.862 * 10⁹ JIn kJ = 2.862 * 10⁶ KJIn cal = 6.86 * 10⁸ calWhat is the conversion factor from kilowatt-hour (kWh) to Joules (J)?The conversion factor from kilowatt-hours to joules is given below:
1 kWh = 1000 * 3600 J
1 kWh = 3600000 J
The energy used by the frost-free refrigerator is given below as follows:
795 kWh = 795 * 3600000 J
795 kWh = 2.862 * 10⁹ J
795 kWh = 2.862 * 10⁹ J / 1k/J
795 kWh = 2.862 * 10⁶ KJ
1 Joule = 0.24 Cal
2.862 * 10⁹ J = 2.862 * 10⁹ J * 0.24 cal/J
2.862 * 10⁹ J = 6.86 * 10⁸ cal
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pls answer the question OR ELSE... a fly will land and perish in your beloved coffee
What is a limiting reactant?
Question 1 options:
the reactant that is in excess
the product that you can make the most of
The reactant that determines how much product can be made
the amount of reactants that react with each other
Answer:
The reactant that determines how much product can be made
Explanation:
The limiting reactant in a chemical reaction is the one that is consumed first and restricts the amount of product that may be produced (or limiting reagent).
5.6 mol N₂O.
Express your answer using two significant figures.
5.6 mol N₂O is equal to 5.6 mol. (Note: The chemical formula N₂O already specifies the number of moles, so including "mol" after the number is redundant.) The answer, rounded to two significant figures, is 5.6 mol.
What is 1 Mole?A mole is a unit of measurement in chemistry that represents an amount of a substance. One mole is defined as the amount of a substance that contains Avogadro's number of entities, where Avogadro's number is defined as 6.02214076 x 10²³ particles. This number is used to convert between mass, number of particles, and moles of a substance.
For example, one mole of a pure substance contains 6.022 x 10²³atoms, molecules, or ions, depending on the nature of the substance. The mole is a useful way to measure large amounts of chemical substances while avoiding the use of cumbersome numbers.
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Explain the relationships between mass % of sugar and density
The mass percent of the sugar would increase as the density is increasing.
What is the relationships between mass % of sugar and density?There is a positive relationship between the mass percent of sugar and the density of a sugar solution. As the mass percent of sugar in a solution increases, the density of the solution also increases
. This occurs because sugar molecules have mass, and when more sugar is added to a solution, the total mass of the solution increases, resulting in a higher density. However, it is important to note that the relationship between the mass percent of sugar and density is not linear and is influenced by the temperature and pressure of the solution.
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A 76.00 pound flask of mercury costs $142.00. The density of mercury is 13.534 g/cm3. Find the price of one cubic inch of mercury by calculating intermediate values. What is the price of one pound of mercury?
The cost of 1 pound flask of mercury is $1.86. One of the most commonly used units for determining the mass or substance of an item or a body is the pound.
What is pound?You really must understand what pounds signify when referring to weight. One of the most commonly used units for determining the mass or substance of an item or a body is the pound.
Scales are used in several ways to determine a body's weight or mass. To measure various items of various sizes, many sorts of scales are utilized. As the measure of an object's weight, pounds are used. In Britain, this style of measuring in pounds is typical.
cost of 76.00 pound flask of mercury =$142.00
cost of 1 pound flask of mercury=$142.00/ 76.00 =$1.86
Therefore, the cost of 1 pound flask of mercury is $1.86.
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More molecules in a fixed volume means
pressure.
less
more
More molecules in a fixed volume means more pressure.
What is a Molecule?According to the context, the term may or may not include ions that meet this requirement. A molecule is a collection of two or more atoms held together by attractive forces known as chemical bonds.
Hence, it can be seen that an increase in the number of gas molecules, while container volume stays constant, increases pressure.
A decrease in container volume increases gas pressure. An increase in the temperature of a gas in a rigid container increases the pressure
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How many quarters do you need to do 10 loads of laundry?
This depends how much it costs per load of laundry.
For example:
If 1 load of laundry costs $2.50, this would mean that you need 10 quarters for one load. Multiply that by 10, and you get 100 quarters (the equivalent of $25).
Depending on how much the load costs, simply divide the price per load by .25 to get you total in quarters, then multiply it by 10 in this case.
A mass of 99.7632 g of cold water at an initial temperature of 22.6°C are added to the hot water that was added to the calorimeter in the previous question. Given that the equilibrium temperature of this water was also 64.4°C, how much heat (in J) was absorbed by this mass of water? (5 sf) (Hint: I'm asking you to calculate qcold for this endothermic process).
1876.5J is the amount of heat released. Heat is the energy that moves through one body to another when temperatures are different.
What is heat?Heat is the energy that moves through one body to another when temperatures are different. Heat passes from the hotter to the colder body when two bodies with differing temperatures are brought together.
By transitioning through one physical state (or phase) to another, such as from a phase from solid to liquid (melting), from such a solids to a vapour (sublimation), from either a liquid to a vapour (boiling), either from from solid form to another, a substance can absorb heat without increasing in temperature (usually called a crystalline transition).
q=m×c×ΔT
q=99.7632× 0.45×(64.4°C-22.6°C )
q=99.7632× 0.45×41.8=1876.5J
Therefore, 1876.5J is the amount of heat released.
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4. Which formula represents the binary molecular compound dinitrogen tetroxide?
O N₂0
ON₂04
O NO4
O N₂02
N₂0₄ is the formula represents the binary molecular compound dinitrogen tetroxide. Therefore, option B is correct.
What is the binary molecular compound ?Binary molecular compounds are made up of exactly two nonmetal elements. HF, NO2, and P2O5 are a few examples. It is extremely simple to name binary molecular compounds. The first element is given its element name, followed by ide; the second element is given its root (hydr, bor, carb, ox, fluor, etc.).
In N₂0₄ molecule there are two nitrogen atoms at the suffix so, it is binary and in oxygen atom its suffix is 4 so, it is tetroxide. Therefore, N₂0₄ is the formula represents the binary molecular compound dinitrogen tetroxide.
Thus, option B is correct.
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Please help Quick I don't get it. and quick I got a time limit till tomorrow.
Dichotomous keys for the above can be:
Organism has legs only.... Organism has both legs and wings?They possess an antenna....do not possess an antennaDo they possess, claws?....Absence of claws?Do they have toxins( presence of stingers).... absence of stingers?How to create a dichotomous key?A dichotomous key is a tool used to identify species of plants, animals, or other objects based on a series of choices between pairs of contrasting characters.
To create a dichotomous key, follow these steps:
Familiarize yourself with the objects or organisms you wish to identify. Study their features and differences in detail.Choose the most important distinguishing characters of the objects or organisms and write down each pair of contrasting characters.Create the first split by choosing the most important contrasting character and writing it down as the first choice in the key.For each choice in the key, write down the possible outcomes and the next pair of contrasting characters.Continue making choices and creating new pairs of contrasting characters until you have identified all the objects or organisms.Learn more on dichotomous key here: https://brainly.com/question/24807939
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The molar mass of KCI is 74.55 g/mol.
What is the mass of 0.359 mol KCI?
[?]g KCI
Mass of 0.359 mol of KCI is calculated to be 26.79 g. Mass of a given chemical element or chemical compound (g) divided by the amount of substance (mol) is called molar mass.
What is meant by molar mass?Molar mass of a compound can be calculated by adding standard atomic masses of the constituent atoms.
The mass of 0.359 mol of KCI can be calculated by multiplying the number of moles by its molar mass:
mass = moles * molar mass
mass = 0.359 mol * 74.55 g/mol
mass = 26.79 g
So, the mass of 0.359 mol of KCI is 26.79 g.
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Answer: 26.79
Explanation:
Sive the IUPAC name for each of the following structures: 1. 2. 3. 4. 5. 6. 7. 3. 9. 10. H&C. H3C. H₂C: H H3C H₂C HC ww H₂C. H3C Br CH3 CH3 CH3 H Br CH3 CH 3 'Br CH3 CH 3 CH 3 CH 3 CH 3 CH3 CH3 CH3
The IUPAC was founded in 1919 by academics and researchers who realized the need for chemical standardization. Therefore, in the below given ways molecules can be named.
What is IUPAC ?The International Union of Pure as well as Applied Chemistry is abbreviated as IUPAC. It belongs to an international scientific publication with no government affiliation. The IUPAC works to develop chemistry by, among other things, establishing international quality standards for nomenclature, symbols, as well as units.
The IUPAC was founded in 1919 by academics and researchers who realized the need for chemical standardization. The International Union of Pharmaceutical Societies (IACS), the IUPAC's forerunner, convened in Paris in 1911 to discuss topics that needed to also be addressed.
CH[tex]_3[/tex] methane
CH[tex]_3[/tex]CH[tex]_3[/tex] ethane
CH[tex]_3[/tex]CH[tex]_2[/tex]CH[tex]_3[/tex] propane
Therefore, in the above given ways molecules can be named.
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what volume of water should be added to 150cm3 of 0.5M NaOH to produce 0.1M solution
Taking into account the definition of dilution, the volume of water added to 150cm³ of 0.5 M NaOH to produce 0.1 M solution is 600 cm³.
Definition of dilutionA dilution is a procedure whose purpose is to decrease the amount of solute per unit volume of dilution. This procedure is accomplished by adding a specified amount of diluent to a specified amount of solute.
The amount of solute does not change. As more solvent is added, the concentration of the solute decreases and the volume of the solution increases.
A dilution is mathematically expressed as:
Ci×Vi = Cf×Vf
where:
Ci: initial concentrationVi: initial volumeCf: final concentrationVf: final volumeVolume of water addedIn this case, you know:
Ci= 0.50 MVi= 150 cm³Cf= 0.10 MVf= ?Replacing in the definition of dilution:
0.50 M× 150 cm³= 0.10 M× Vf
Solving:
(0.50 M× 150 cm³)÷ 0.10 M= Vf
750 cm³= Vf
If the initial volume is 150 cm³, the amount of volume of water added is calculated as:
Volume of water= Vf - Vi
Volume of water= 750 cm³ - 150 cm³
Volume of water= 600 cm³
In summary, the volume of water added is 600 cm³.
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If the rate of change of Cl₂ is -0.0520M/s, what is the rate of change of NO?
2NO(g) + Cl₂(g) → 2NOC1(g)
The reaction has a first order in Cl 2 and a second order in NO. The general order of reactions is 2+1 = 3.
How do you find the rate law?We must ascertain the values of the exponents n, m, and p as well as the rate constant, k, in order to derive a rate law. The values of the coefficients required to formulate the rate law are available to us if the reaction orders for a reaction are provided.
The reaction's rate law is rate, starting from the slow step
k'[NOCl2][NO] - (1).
Fast step is used to determine the concentration of NOCl 2, which is an intermediate.
[NOCl 2]=K[NO][Cl2] - (2)
Substitute (2) in (1)
rate=k'K[NO][Cl2][NO]
Hence, rate =k[NO]2[Cl]
The reaction has a first order in Cl 2 and a second order in NO. The general order of reactions is 2+1=3
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which of the following cannot be a chemical symbol of an element
Cf cannot be a chemical symbol of an element. Therefore, option B is correct.
What is an element ?The term an element is defined as a substance that cannot be broken down into a simpler format. They are separate by a unequaled atomic number. The elements are formed by their atomic number in the periodic table, which highlights elements with similar properties.
Cf cannot be a chemical symbol of an element. CO is the symbol of element cobalt. B is the symbol of element boron and Cu is the symbol of an element copper.
Thus, option B is correct.
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Your question is incomplete, most probably your answer was
Which of the following cannot be the chemical symbol for an element
a. co
b. cf
c. b
d. cu
How do I draw the Lewis structure ?
Find out how many valence electrons there are in total. Step 2: Write down the molecule's skeleton structure. Step 3: Each bond in the skeleton structure is formed by using two valence electrons.
How should I depict the Lewis structure?First, the sum of the valencies of each atom determines the total number of valence electrons in the molecule.
The Lewis dot structure gains electrons (number of electrons added equals magnitude of negative charge) if the molecule is an anion.
A Lewis electron dot diagram, also known as an electron dot diagram, Lewis diagram, or Lewis structure, is a way to show the valence electrons in an atom by placing dots around the symbol for the element. The number of valence electrons in the atom is depicted by the diagram's number of dots. The atom symbol is surrounded by dots that represent the electrons in the outer shell. These symbols are referred to as Lewis symbols and electron dot symbols.
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3. Record your observations for each simulation test trial in the tables below and write 3-4 sentences describing your observations.
(Hint: Simulation is in lesson 1.16)
Choose a different starting number of carnivores, herbivores, and producers for each trial you conduct.
Table 1: Test Trial 1
Organisms in Simulation Start (number you added of each) End (number you ended with)
Carnivore
Herbivore
Producer
Table 2: Test Trial 2
Organisms in Simulation Start (number you added of each) End (number you ended with)
Carnivore
Herbivore
Producer
Table 3: Test Trial 3
Organisms in Simulation Start (number you added of each) End (number you ended with)
Carnivore
Herbivore
Producer
Write 3-4 sentences describing your observations in the three tables above.
4. What conclusions can you draw about how resource availability affects populations of organisms in an ecosystem? Write an evidence-based claim. (Hint: This means you state whether your hypothesis/prediction is correct or incorrect. You then need to provide evidence from your observation tables to support your claim of it being correct/incorrect.)
The abundance of resources means that there would be more individuals in the ecosystem.
What is the effect of availability of resources on the ecosystem?When resources are abundant, competition for those resources is less intense. However, when resources become scarce, competition for them increases, and some species may become extinct or be displaced by more competitive species.
Again, availability of resources can also affect population growth. For example, if resources are abundant, populations of organisms may increase, leading to overcrowding and competition for limited resources. On the other hand, if resources are scarce, population growth may be limited.
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The molar mass of H2O is
18.02 g/mol. What is the mass
of 6.80 moles H₂O?
?] g H₂O
The molar mass of H2O is 18.02 g/mol. Therefore, 122.4g is the mass of 6.80 moles H₂O. Water is a gaseous, liquid, as well as solid material.
What is water?Water is a gaseous, liquid, as well as solid material made of something like the chemical elements oxygen and hydrogen. It is one among the most abundant and necessary chemicals.
At room temp, it is a tasteless and odorless liquid with the critical capacity to dissolve several other compounds. Water's flexibility as either a solvent is critical to living creatures.
mass = moles × Molar mass
= 6.80 × 18
=122.4g
Therefore, 122.4g is the mass of 6.80 moles H₂O.
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For the reaction
C+ O2 → CO2,
what is the maximum amount of CO2 which
could be formed from 3.67 mol of C and
4.23 mol of O₂?
Answer in units of g.
179.43 g/mol is the maximum amount of CO₂ which could be formed from 3.67 mol of C and 4.23 mol of O₂.
What is chemical reaction?
When molecules in a reactant undergo a chemical reaction, their bonds are broken, and molecules in the product undergo a similar process, new bonds are created, creating a new substance.
We are surrounded by chemical reactions on a daily basis, whether it be in our bodies as they process food or in the sun as they produce the light we see. Prior to starting with chemical reactions, it's crucial to understand physical and chemical changes.
C + O₂ → CO₂
carbon = 12.01g/mol
12.01 × 3.67
= 44.07 g/mol
O₂ = 32/mol
= 32 × 4.23
= 135.36 g/mol
44.07 g/mol + 135.36 g/mol
= 179.43 g/mol
Thus, 179.43 g/mol is the maximum amount of CO₂ which could be formed from 3.67 mol of C and 4.23 mol of O₂.
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For the Haber process, N₂ + 3H₂-2NH3, what theoretical volume of ammonia (NH3
hould be produced if we start with 5.0L of N₂ if STP?
29.9
10.0
22.4
44.8
Explanation:
The theoretical volume of ammonia that should be produced in the Haber process if we start with 5.0 L of nitrogen (N2) at standard temperature and pressure (STP) can be calculated as follows:
1 mole of N2 reacts with 3 moles of H2 to form 2 moles of NH3
Thus, the number of moles of N2 present can be calculated using the Ideal Gas Law:
PV = nRT
Where n is the number of moles of gas, R is the gas constant, T is the temperature in Kelvin, P is the pressure in atmospheres, and V is the volume in liters.
At STP (0°C and 1 atm), the volume of one mole of gas is 24.45 L.
Given 5.0 L of N2 at STP, the number of moles of N2 can be calculated as:
n = (PV)/RT = (1 atm)(5.0 L)/(0.0821 atmL/molK)(273 K) = 1.96 moles
The number of moles of NH3 produced can then be calculated as:
n = (2 moles of NH3)/(1 mole of N2) = 2 moles/1 mole = 2 moles
The volume of NH3 can be calculated as:
V = nRT/P = (2 moles)(0.0821 atmL/molK)(273 K)/(1 atm) = 44.8 L
So, the theoretical volume of ammonia (NH3) that should be produced if we start with 5.0 L of N2 at STP is 44.8 L.
A flask with a volume of 250.0
mL contains air with a density of 1.126
g/L. What is the mass of the air contained in the flask?
A flask with a volume of 250.0 mL contains air with a density of 1.126 g/L. The mass of the air contained in the flask is 0.28 gram.
What do you mean by density ?The density of a material is the measure of how tightly it is packed together. It is expressed as mass per unit volume. Density Symbol is D or
Formula Density = m/V, where is the density, m is the object's mass, and V is the object's volume.
Given:
Volume = 250.0 mL
Convert 250.0 mL in Liters :
250. 0 / 1000 = 0,25 L
Density = 1.126 g/L
Mass = g ?
Mass = Density × Volume
Mass = 0.25 × 1.126
Mass = 0.28 gram
Thus, the mass of the air contained in the flask is 0.28 gram.
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chemical name of this formula Na2SO4.
Na is for sodium and SO4 is sulfate...
Answer: The chemical compound name for Na₂SO₄ is Sodium Sulfate.
HElppppppp!!!!!!!!!!!!!!!!!!!!!!!
Answer:
The edges changes quite drastically and the size went down by a millimeter. The color and hardness didn't change at all. The most noticeable difference was the edges.
What are some hazards to be aware of in this lab?
flammable substances
sharps (equipment that can cut or puncture skin)
natural gas
electricity
fire
extreme cold
distilled (aka de-ionized or DI) water
acid
Some of the hazards that we should be aware of in the laboratory include the following: flammable substances, sharps (equipment that can cut or puncture skin) and fire. That is option A, B and E.
What are laboratory hazards?Laboratory hazards are those substances or equipments that are found in the laboratory which can cause harm to an individuals working in the laboratory.
Some of the hazards in the laboratory include chemical, biological, physical and radioactive hazards, as well as, musculoskeletal stresses.
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Some of the hazards to be aware of in this lab include;
flammable substancessharps (equipment that can cut or puncture skin)fireacidWhat are the hazards in a laboratory?A Laboratory hazard is anything that has the potential to cause damage or harm.
Chemical, biological, physical, radioactive, and other possible risks are all present for those working in a laboratory, in addition to musculoskeletal strains. Many employees are more likely to sustain injuries because they are not aware of the dangers that could exist at work.
Some laboratory hazards include:
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_Na₂SO4 (aq) + _____ BaCl₂ (aq) → ______ BaSO4(s) +
Which coefficients balance the equation?
OA. 1,1,1,2
OB. 1,2,1,2
OC. 2,1,1,2
OD. 2,1,2,1
NaCl (aq)
Answer:
A
Explanation:
Na2SO4 +BaCl2 ____BaSO4+2NaCl
What was Flint’s response to the Virginia Tech research findings?
State of emergency was proclaimed in Flint, the county seat of Genesee, by Michigan Governor Rick Snyder on January 5, 2016. Shortly after, President Barack Obama announced a federal state of emergency, approving further assistance from the Department of Homeland Security and the Federal Emergency Management Agency.
What is the Flint water crisis?A public health emergency known as the Flint water crisis began in 2014 when the drinking water in Flint, Michigan was found to be tainted with lead and possibly Legionella bacteria. Flint switched its water source from treated Detroit Water and Sewerage Department water (obtained from Lake Huron and the Detroit River) to the Flint River in April 2014 due to a budget issue.
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