Answer:
I. Concrete sidewalks
Explanation:
One of the factor that affects the infiltration of water into the surface of the soil is the use of concrete sidewalks.
A concrete sidewalk prevents water from infiltrating down into the soil profile. Infiltration deals with the movement of water into the soil or ground. It is the major source of ground water recharge. Also, infiltration makes water available for plants.Concrete is impermeable and non - porous media
When concrete pavements are used, water will not be able to move into the ground. They run on the surface and collects into nearby streams and water bodies.
.00278kg • ____= ____mg
Answer:
blank space one- 0
blank space two- 0
Explanation:
All of the following are examples of suspensions except what?:
muddy water
Italian salad dressing
salt water
dust particles in the air
Can somebody plz help me with some grade7science?
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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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.
please someone help I'm very confused
How much time in hours would it take a car to drive 100 miles at a speed of 33 miles per hour?
Answer:
[tex]3.03 \: or \: 3\frac{1}{33} (in \: fration) \: hours[/tex]
Explanation:
33 miles takes 1 hour
1 " " 1/33 "
100 " 100×1/33
3.03 hours
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
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
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
Balance the chemical equation Au,O, --> Au + O2
Explanation:
Don't you mean ½O2+Au-->AuO
If you observe a Full Moon on Jan 12th, on what date would you observe the next New Moon?
Answer:
January, 28th.
Explanation:
yeet
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
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.
When phosphorus forms an ion, it will have the same electron configuration as ?
1. nitrogen
2. argon
3.neon
4.sodium
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
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
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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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:
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
Help me i don’t know what to put here pls thank you!
Why does Argon have a zero valency?
brainliest for the right answer
hsisbaoabsus akapanwiwvwhs
If you asking about the neon and argon thing then I'll answer it tho!
Neon and Argon's are fully filled electron's in their 1 st shell or most likely it's outermost shell which have 8 electron's in total and it cannot take or loose any of them and it can't even share it tho to anyone and that's why argon have a zero valency
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:
Help if your good at science
What is the name of the planet next to the label a?
Answer:
The answer to the question is Mercury.
Answer:
Mercury
Explanation:
The planet to the left of A is mercury it is on the 4 row outside the asteroid belt
Help please I’m being timed!
Answer:
a
Explanation:
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.
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
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
The half-life of carbon 14 is 5,730 years. How much would be left of an original 50-gram sample after 2,292 years
Answer:
37.9g of carbon 14 remains
Explanation:
The radioactive decay of an atom follows the equation:
Ln[A] = -kt + Ln[A]₀
Where [A] is amount of isotope after time t, k is decay constant and [A]₀ initial amount of the isotope.
We can find k from half-life using:
k = ln 2 / Half-Life
k = ln 2 / 5730 years
k = 1.2097x10⁻⁴ yrs⁻¹
Replacing in the equation all values:
Ln[A] = -1.2097x10⁻⁴ yrs⁻¹*2292yrs + Ln[50g]
Ln[A] = 3.635
[A] = 37.9g of carbon 14 remains
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.