Solar Energy is the answer
Answer:
53.3 %.
Explanation: C2H4O2. = 2 * 12.011 + 4 * 1.008 + 2 * 15.999. = 60.052.
Answer:Na2S04 + HCl gives
NaCl + H2So4
Explanation:
Displacement reaction
Answer:
the answer is b
Explanation:
Physical changes affect a substance's physical properties but do not alter its chemical structure. Types of physical changes include boiling, clouding, dissolution, freezing, freeze-drying, frost, liquefaction, melting, smoke and vaporization.
The mass number is the total number of protons and neutrons in a nucleus of an element. The average atomic mass is the sum of the masses of an element's isotopes, each multiplied by their abundance.