Hey there,
(I felt to pity for you. I though no one else would answer it correctly. I would be more than happy to answer) ~Astute.
Question #1Which contains a greater number of atoms, a mole of silver or a mole of gold?
What weighs more, a pound of crackers or a pound or computers. This is the same question, they both have the same amount of weight. Your answer would be
"<span>
They both contain the same number of atoms."</span>____________________________________________________________
Question #2
<span>The percent composition of elements in a compound is determined from the compound's chemical formula by dividing the total mass of an element present in the formula by the molar mass of the compound.
(T/F)
This would be a </span>
statement.
_____________________________________________________________
Question #3
<span>One way to determine the empirical formula of a compound involves using the percent composition of the compound.
Based on my search, this statement above would also be a </span>
<span> statement.
____________________________________________________________
Question #4
</span><span>In the equation, 2H2 + O2 -----> 2H2O, which substance(s) are the reactant(s)?
Your correct answer would be </span>
hydrogen and <span>
oxygen which would be </span><span>
H2 and O2
_____________________________________________________________
Question #5
</span><span>In a chemical equation for a reaction, the arrow sign -----> means "yields" or "produces."
</span>
This would be
because in a chemical equation for a reaction, the arrow sign means (not produces) but (product).
____________________________________________________________
Question #6<span>What type of reaction is represented by the following chemical equation? CH4 + 2O2 ----> CO2 + 2H2O + heat/light
</span><span>
Combustion would be the correct answer to this question.
_____________________________________________________________
Question #7
</span><span>What is produced during any combustion reaction?
</span><span>(Oxygen, water) would the production during any combustion of that reaction. So based from your options, the correct answer would be A.)
_____________________________________________________________
Question #8
</span><span>In the reaction Fe2O3 + 3CO ------> 2Fe + 3CO2, 10 moles of solid iron and 15 moles of carbon dioxide are produced from 5 moles of iron (III) oxide and 15 moles of carbon monoxide (CO). What is the mole ratio of carbon monoxide to solid iron?
Your correct answer would be </span><span>
3:2 Basically because </span>
____________________________________________________________
<span>
Question #9Solid ammonium nitrate (NH4NO3) reacts, over time, to form nitrogen, oxygen, and water gases. This is a synthesis reaction.
</span><span>
This statement above would be a </span>
statement based on my research. That would be a synthesis reaction.
_____________________________________________________________
Question #10<span>What is the mole ratio of oxygen to propane (C3H8) in the following equation?C3H8 + 5O2 -----> 3CO2 + 4H2O
</span>
I believe but I have a good vibe that
<span>
5:1 would be your answer because as I was doing that work, I got an answer similar to this but not exact.
_____________________________________________________________
Last Question =)</span><span>Lithium reacts with bromine (Br2) in a synthesis reaction to produce lithium bromide. Determine the limiting reactant if 25.0 grams of lithium and 25.0 grams of bromine are present at the beginning of the reaction.
</span>
Your correct answer would be "limiting reactant = both lithium and bromine" pretty much because 2Li + Br2 -->2LiBr gives the mass of the reactant.
_____________________________________________________________
I spent like 45 minutes on these question(s) XD, I'm like so tired. I hope this helps not only you, but everyone else who has this question.
~Astute