Answer:
When Zinc reacts with hydrochloric acid the following reaction takes place:
Zn+2HCl→ZnCl
2
+H
2(g)
↑
Here 1 molecules of hydrochloric acid taking part in the reaction,the number of molecules of hydrogen produced in the reaction.
4molesofHCl×
2molesofHCl
1moleofH
2
=2molesofH
2
Answer:
CaCO3 + 2HCl → CaCl2 + H2O + CO2
Calcium Carbonate + Hydrogen Chloride → Calcium Chloride + Water + Carbon Dioxide
Calcium carbonate is not very soluble in water. This is an acid-base reaction (neutralization): CaCO3 is a base, HCl is an acid.
The answer is C : Radioactive dating. I know this because radioactive dating is done by examining the atomic particles found in an object. The atomic particles decay over time at a predictable rate. Scientists are able to measure the rate of decay to establish the age of the fossil, organism, and/or material.
Answer: A
The sun doesn't make a difference in processes that take place underground, unless they're asking about temperature of the Earth, which they're not.
Answer:
No
Explanation:
A mole is a measure of a number of atoms. One mole of Uranium is the same number of atoms as one mole of Hydrogen