Since you know the ratio of atoms, you can start to put a formula togeter. The formula might look like:<span>
X<span>H2.67
</span></span>but since atoms can't come in fractional amounts, we have to multiply the formula by some number in order to turn 2.67 into a whole #, while still maintaining the ratio. Multiplying 2.67 by 3 yields 8, so the most likely ratio in the molecule is
X3H8<span>so the ratio of 1:2.67 is still maintained. The mass percent tells you that out of every 100g of compound, 91.26g is element X, so the other 8.74g must be H. Dividing each mass by the number of moles in the formula gets us the molar mass of each element (approximately). DIviding 8.74g by 8 gets 1.09, roughly the molar mass of hydrogen. Dividing 91.26g by 3 gets us 30.4, roughly the molar mass of phosphorus. Element X is most likely phosphorus</span>
Answer:
c) an increase in the number of molecules, which increase the frequency of collisions with the walls of the container.
Explanation:
Hello!
When in a chemical reaction the amount of mole of products is greater than the amount of mole of reagents, an increase in pressure is observed upon reaching equilibrium.
Increases in temperature can also produce an increase in pressure although in some cases an increase in temperature may occur under isobar conditions (constant pressure).
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The density of sulfuric acid is given to you in grams per milliliter, 
. This means that the unit of volume here will be 1 ml .
<h3>What is density?</h3>
Density is a term used to describe how much space (volume) an object or substance takes up in relation to the amount of matter in that object or substance (its mass). Density is defined as the amount of mass per unit volume.
M = n/V where n is the number of moles and V is the volume in liters,
d = density
= 1.84 g/ml
= 1840 g/L,
Weight of 
is 1840 g in 1 L of solution,
But is present 96% by weight in the solution
0.96 x 1840
= 1766.4 g,
So, M
= n/V
= 1766.4/98/1 where 98 is the molar mass of
Therefore
M = 18.024 mol/L
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