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Trava [24]
3 years ago
6

I AM GIVING 100 POINTS AND A BRAINLIEST!!! HELP ME PLEASE!!!!! And do it like I asked. So do this:

Chemistry
2 answers:
Mamont248 [21]3 years ago
7 0
1. Gravity is a force that comes from the center of the earth. its a ton of different metal and chemical combinations that work as a magnet pulling everything within the earths atmosphere towards it. thats how we stay on the ground.
2. Gravity is a fundamental underlying force in the universe. the amount of gravity that something possesses is proportional to itas mass and distance between it and another object. this relationship was first published by Sir Issac Newton. his law of universal gravitation says that the force (F) of gravitational attraction between two objects with Mass 1 and Mass 2 at distance D is: F=G(mass1*mass2)/D squared
3. say you drop an elephant and a feather. the elephant is bigger so it has more air resistence but the feather is alot lighter so it take less air resistence to hold it up. still the elephants hits first because of the mass difference
4. an example of the force of gravity can go back to the elephant and the feather. Because of the mass of the elephant gravity has a harder pull on it so it falls quicker. 

Leona [35]3 years ago
5 0
Gravity is a force of attraction because it pushes you down toward the center of the earth so you don't fly off into space (this is both the explanation and example of gravity). Mass determines the force of gravity because the greater the mass the more the force of gravity increases to be able to push the object down to the ground. Air resistance also plays its part because if a rock and a leaf falls down at the same time, air resistance acts mostly on the leaf that is why the leaf falls after the rock does.

Hope this helped! :)
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What is the coefficient in this chemical formula? 3C6H12O6
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Which compound is classified as a hydrocarbon? A) butanal B) butyne C) 2-butanol D) 2-butanone
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7 0
4 years ago
Will a precipitate of magnesium fluoride form when 300. mL of 1.1 × 10 –3 M MgCl 2 are added to 500. mL of 1.2 × 10 –3 M NaF? [K
Tju [1.3M]

Answer:

No precipitate is formed.

Explanation:

Hello,

In this case, given the dissociation reaction of magnesium fluoride:

MgF_2(s)\rightleftharpoons Mg^{2+}+2F^-

And the undergoing chemical reaction:

MgCl_2+2NaF\rightarrow MgF_2+2NaCl

We need to compute the yielded moles of magnesium fluoride, but first we need to identify the limiting reactant for which we compute the available moles of magnesium chloride:

n_{MgCl_2}=0.3L*1.1x10^{-3}mol/L=3.3x10^{-4}molMgCl_2

Next, the moles of magnesium chloride consumed by the sodium fluoride:

n_{MgCl_2}^{consumed}=0.5L*1.2x10^{-3}molNaF/L*\frac{1molCaCl_2}{2molNaF} =3x10^{-4}molMgCl_2

Thus, less moles are consumed by the NaF, for which the moles of formed magnesium fluoride are:

n_{MgF_2}=3x10^{-4}molMgCl_2*\frac{1molMgF_2}{1molMgCl_2}=3x10^{-4}molMgF_2

Next, since the magnesium fluoride to magnesium and fluoride ions is in a 1:1 and 1:2 molar ratio, the concentrations of such ions are:

[Mg^{2+}]=\frac{3x10^{-4}molMg^{+2}}{(0.3+0.5)L} =3.75x10^{-4}M

[F^-]=\frac{2*3x10^{-4}molMg^{+2}}{(0.3+0.5)L} =7.5x10^{-4}M

Thereby, the reaction quotient is:

Q=(3.75x10^{-4})(7.5x10^{-4})^2=2.11x10^{-10}

In such a way, since Q<Ksp we say that the ions tend to be formed, so no precipitate is formed.

Regards.

6 0
3 years ago
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