I think that the answer might be D beacuse if he body lacks calcuim thier DIET is low on calcium
Answer:
13. 
This is a double displacement reaction, not an acid-base reaction
14.


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24. 

Explanation:
All acid-base reaction have the same products,
and a salt. Whit this in mind the acids would the compounds that produces the hydronium ion
and the bases would be the compounds that produces the hydroxide ion 
Answer:
B) The molecules were closer together when the juice pop was frozen.
Answer: The chemical equation for the formation one mole of
from its elements in their standard states is 
Explanation:
The standard enthalpy of formation or standard heat of formation of a compound is the change of enthalpy during the formation of 1 mole of the substance from its constituent elements, with all substances in their standard states.
The chemical equation for the formation one mole of
from its elements in their standard states is:

where (s) represents solid state and (g) represents gaseous state.