Answer:
68.7% is the percent of frozen freshwater.
2 x 10 ^ 3
should be the answer ^ 3 is the exponent
Answer:
d
Explanation:
it's the only one that seems to make sense
Answer:
a) Sm
Explanation:
Hello,
This substantiation could be done by knowing how to compute the released energy for 1 mol the oxide. Thus, for Sm, the computation turns out into:

The sign just indicates that the heat is released due to the chemical reaction and it matches with the indicated heat in the statement.
Best regards.