Answer:
That’s a question on school- what- I-
Explanation:
List these from smallest to largest- Molecules, Mixtures, Atoms
Atoms Molecules mixtures
When phosphorus forms an ion, it will have the same electron configuration as ?
1. nitrogen
2. argon
3.neon
4.sodium
How do you find the ideal and actual MAs of the pulley systems?
Answer: The mass M = 9g, so G = 9g x 9.8 m/s² = 88.2gm/s², or 88.2 newtons. Insert the tension and gravitational force you just calculated into the original equation: -F = T + G = 18N + 88.2N = 106.2N. The force is negative because the object in the pulley system is accelerating upwards.
Explanation:
FeCl3 + 3NaOH → Fe(OH)3 + 3NaCl
How many grams of NaCl could you make with 2.43306 g of FeCl3?
g NaCl (use 5 sig figs
2.6299 g NaCl
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Stoichiometry
Reading a Periodic TableUsing Dimensional AnalysisExplanation:Step 1: Define
[RxN} FeCl₃ + 3NaOH → Fe(OH)₃ + 3NaCl
[Given] 2.43306 g FeCl₃
Step 2: Identify Conversions
[RxN] 1 mol FeCl₃ = 3 mol NaCl
Molar Mass of Fe - 55.85 g/mol
Molar Mass of Cl - 35.45 g/mol
Molar Mass of Na - 22.99 g/mol
Molar Mass of FeCl₃ = 55.85 + 3(35.45) = 162.2 g/mol
Molar Mass of NaCl - 22.99 + 35.45 = 58.44 g/mol
Step 3: Stoichiometry
Set up: [tex]\displaystyle 2.43306 \ g \ FeCl_3(\frac{1 \ mol \ FeCl_3}{162.2 \ g \ FeCl_3})(\frac{3 \ mol \ NaCl}{1 \ mol \ FeCl_3})(\frac{58.44 \ g \ NaCl}{1 \ mol \ NaCl})[/tex]Multiply/Divide: [tex]\displaystyle 2.62986 \ g \ NaCl[/tex]Step 4: Check
Follow sig fig rules and round. We need 5 sig figs (instructed).
2.62986 g NaCl ≈ 2.6299 g NaCl
Answer:
2.6299
Explanation:
just did the quiz
Which physical property and change in matter is utilized by distillation to separate two liquids in a mixture?
Answer:
Boiling points
Liquid to gas
Explanation:
For distillation, the differences in boiling points of the liquids in the column is utilized for this separation.
The change in matter involved a state change of liquid to vapor or gaseous form.
Distillation is used to separate different liquids in a mixture. A liquid - liquid mixture is separated into components due to their appreciable boiling point differences. The method is used for purifying liquids. The solution is boiled in a distillation flask to vaporization.Calculate the amount of heat released when one bottle (250 g) of water is cooled from 25°C to 30°C. The specific heat of water is 4.18 J/g°C.
Answer: the answer is a
Explanation: glad we have the same troubles Rn hahah
A saturated solution become unsaturated when it is heated why?
Answer:
Due to application of heat on a saturated solution, the interparticle space increases due to increase in the kinetic energy of the particles which allows more solutes to dissolve in the solution thereby making it unsaturated.
Please help I will give 20 points
Explanation:
1.combined
2.bonds
3.retain
4.elements
hydrogen gas,oxygen gas
extinguish
5.sodium and chlorine
6.violently
7.Don't know for sure
I'm certain most but not all
Answer:
1.combined
2.bonds
3.retain
elements
hydrogen gas,oxygen gas
extinguish
sodium and chlorine
violently
Explanation:
same with 7
How does electronegativity play a role in the strength of intermolecular forces.
Intermolecular forces such as dipole-dipole forces, London dispersion forces exist between molecules and these depend on strength of electronegativity of molecule.
What is intermolecular forces of attraction?Intermolecular forces of attraction is force of attraction that make two molecule come closer. Intermolecular forces of attraction is directly proportional to the electronegativity of the molecule.
Size of electronegative molecule is small so, if any other molecule or molecule come into contact with this molecule then this molecule attract the electron of other molecule very efficiently and therefore the force between the molecule increases.
Thus intermolecular forces of attraction is directly proportional to the strength of electronegativity.
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the stage of the cell cycle between periods of mitosis or meiosis in which the cell grows.
Answer:
it would be meiosis
Explanation:
because it has to grow through a. cell
.00278kg • ____= ____mg
Answer:
blank space one- 0
blank space two- 0
Explanation:
How is coal mined? A. surface mines only B. underground and open pit C.underground mines only
Answer:
b
Explanation:
they have coal mines that go down deep into the earth but they also have mines called strip pits where they dig down and create a large creator in the earth insted of a mine shaft
Which of the following would be the least likely cause of a volcanic eruption?
O tectonic plates colliding
O gas pressure within Earth's crust
O tectonic plates sliding past each other
O new magma flowing into an already-full magma chamber
O new magma flowing into an already-full magma chamber
Answer:
D
Explanation:
Can somebody plz help me with some grade7science?
Based on the data, summarize Alicia's results.
Describe how stirring the soup affects heat transfer.
what is neutralization process
Explanation:
when an acid reacts with base and they cancel out defects of each other and as a product salt and water are produced this reaction is called a neutralization process
1. A wave had a wavelength of 5m and speed of 15m/s, what is the frequency
2. Red light has a longer wavelength than violet light, which one has the greater frequency?(hint they both travel at the same speed)
3. If speed of a longitudinal sound wave is 340m/s and the frequency is 1000 Hz, what is the wavelength?
Answer:
Frequency is 3HZ.
Explanation:15/5 =3
Violet has more frequency
Wavelength is 340000m.
Help please I’m being timed!
Answer:
a
Explanation:
All of the following are examples of suspensions except what?:
muddy water
Italian salad dressing
salt water
dust particles in the air
Through which material do sound waves tend to move fastest
A:Cold Air
B:Metal
C:Water
D:Warm air
Answer:
METAL
Explanation:
Answer:
The answer would be B. Metal
Explanation:
Sound travels the fastest in solids
If you observe a Full Moon on Jan 12th, on what date would you observe the next New Moon?
Answer:
January, 28th.
Explanation:
yeet
A sample of chlorine gas has a volume of 6500 ml at STP. What will the volume be if the temperature is increased to 50.°C and the pressure is decreased to 0.25 atm?
Answer:
The volume will be 30759mL
Explanation:
To solve this question we need to use the combined gas law:
P₁V₁/T₁ = P₂V₂/T₂
Where P is pressure, V is volume and T is absolute temperature of 1, initial state and 2, final state of the gas
Computing the values (STP are 1atm and 273.15K):4
P₁ = 1atm
V = 6500mL
T₁ = 273.15K
P₂ = 0.25atm
V₂ = ?
T₂ = 273.15K + 50°C = 323.15K
1atm*6500mL/273.15K = 0.25atmV₂/323.15K
V₂ = 30759mL
The volume will be 30759mL15 pts! Explain how the absorption of energy (heating) affects the speed of the particles in a substance.
Answer:
See explanation
Explanation:
Temperature has been severally defined as the measure of the average kinetic energy of the molecules of a body. Heat is a form of energy that exists due to temperature difference.
Given a body whose molecules has a speed = (3RT/M)^1/2; this implies that for a given mass of the substance, the velocity of its particles depends on the temperature of the substance.
However, absorption of heat increases the temperature of the body. Therefore, when heat is absorbed, the temperature increases and the speed of the particles of a substance increases according to the relation above.
A population of large predator
fish has recently grown out of
control. How will this impact
the ecosystem?
Answer:
they will eat a lot of fish and make other animals go hungry
Explanation:
logic
As the population of large predator fish has grown out of control it will require more supply food due to which population of small fishes will decrease leading to disturbance in ecosystem.
What is an ecosystem?
Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
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PLEASE HELP DUDE SOON
The outermost shell is the
energy level that
contains in an atom.
Answer:
True hope this helps
Explanation:
PLEASE ANSWER ASAP ITS TIMED
2Al + Fe ----> Al2O3 +2Fe
For the reaction above, the mole ratio Aluminium to Aluminuim Oxide is
a.1:1
b.2:1
c.1:2
d.2:2
The mole ratio Aluminium to Aluminum Oxide is 2 : 1
Further explanationGiven
Reaction
2Al + Fe ----> Al2O3 +2Fe
Required
The mol ratio
Solution
If we look at the reaction above, there is an element missing from the reactant i.e oxygen, because the number of atoms and elements involved in the reaction should be the same between the reactants and products.
So the possible and balanced reactions are:
2Al(s) + Fe₂O₃ (s) → Al₂O₃ (s)+ 2Fe (s)
From this reaction the ratio of Al: Al₂O₃ can be determined, which is 2: 1
Which way would CCI2F2 orient in an electric field?
Answer:
See explanation
Explanation:
In looking at molecules to determine whether they are polar or not we have to look at two things basically;
i) presence of polar bonds
ii) geometry of the molecule
Now, we know that CCI2F2 is a tetrahedral molecule, but the molecule is not symmetrical. It has four polar bonds that are not all the same hence the molecule is polar.
In an electric field, polar molecules orient themselves in such a way that the positive ends of the molecule are being attracted to the negative plate while the negative ends of the molecules are attracted to the positive plate.
So the positive ends of CCI2F2 are oriented towards the negative plate of the field while the negative ends of CCI2F2 are oriented towards the positive ends of the field.
A second grade student approaches you and says that she learned that a lunar eclipse is the result of the Earth blocking the sun's rays from reaching the moon, which makes it look like the moon "disappears" from the sky for a night. Explain to her why this is incorrect.
Answer:
nah she right
Explanation:
Answer:
This is incorrect because a Lunar Eclipse blocks the Sun's rays from reaching EARTH. So for a few seconds, maybe minutes, there is not direct light on earth. So she is incorrect.
Explanation:
I am pretty sure this is right. I hope this helps
For me its 10:00 but if someone in a class i can make it funny and not boring just gimmie link
Balance the chemical equation Au,O, --> Au + O2
Explanation:
Don't you mean ½O2+Au-->AuO