Answer: C... Because Zinc is made of only one type of atoms.
Explanation: All elements are made of one type of atom. Pure gold is made out of only gold atoms, silver out of only silver atoms, etc.
Alpha and Beta particles can be stopped by our skin. Gamma particles cannot be stopped by our skin.
Given:
Ammonia
Hydrochloric acid
To find:
The amount excess of reactant left over in ammonia.
Solution:
Ammonia reacts rapidly with hydrochloric acid to form Ammonium Chloride
Equation for the above statement is derived as:
One gram per mole of ammonia
Similarly for 6.91g of
One gram per mole of hydrochloric acid
Similarly for 4.61g of
From the above information we can say that h c l is a limiting reactant.
Limiting reactant is an element that consumes lesser product in a chemical reaction.
Thus the amount of excess reactant is calculated by using the following formula
Amount of excess reactant left over in
Result:
Amount of excess reactant left over ammonia
I think It might be 329 cm3. I'm not too sure if this answer matches any of your multiple choice questions, and I'm not too sure if this is correct either.
Sorry if I get it wrong. ~(*~*)~
The correct answer would be "A" a gas was produced. A chemical change is when a compound changes shape or form. In this instance it changed from a liquid or solid, to a gas.