This question has two correct options, these are OPTION A AND OPTION D.
Wax is a solid substance and its molecules are tightly packed together. When wax is heated, the molecules of wax gains kinetic energy and move about randomly until the inter molecular forces binding them together is broken and the wax turn into liquid. In the liquid state, the molecules have more free movement, so they spread out and the distances between them increase. Thus, when wax is heated, its molecules will have more kinetic energy to overcome the inter molecular bond in the solid and the distances between the molecules increase in the liquid state.
Answer:
You also know about the mass of that sample, if you know the moles
(First option)
Explanation:
Moles = Mass / Molar mass
Moles . Molar mass = Mass
For example, I have 4 moles of H₂O
Molar mass H₂O = 18 g/m
4 m . 18 g/m = 72 g
If I have 4 moles of H₂O, I also have 72 grams of water too.
N2 + 3H2 ----> 2NH3
<span>you can see 3 moles H2 reacts to form 2 moles NH3 </span>
<span>Therefore moles NH3 = 2 / 3 x moles H2 </span>
<span>= 2/3 x 12.0 mol </span>
<span>= 8.00 mol NH3 hope this help</span>
Answer:
A. Hydrogen cans oxygen are reactants
Explanation:
Oxygen has a charge of -2. Hydrogen has a charge of +1. So it takes two hydrogens to balange the one oxygen hence the H20. So the reaction is balanced, and H20 is indeed made up of 1 oxygen and 2 hydrogen atoms. The equation 2 hydrogen + 1 oxygen (<---reactants) = Water (<--product) So hence Hydrogen cans oxygen is not a true statement. If cans is a misspelling then C would be your answer.
Hope that helped