D) 7
20 points
2. How does the concept of conservation of mass apply to chemical
reacti...
Chemistry, 09.03.2021 18:40 natalie2sheffield
D) 7
20 points
2. How does the concept of conservation of mass apply to chemical
reactions? (hint: the Law of Conservation of Mass) *
a) the reactants and products have exactly the same molecules
b) the change in the amount of matter is equal to the change in energy
o
c) the reactants and products have exactly the same atoms
d) the change in the amount of matter is only a small percentage of the total mass
W
3. How many Oxygen (O) atoms are in the chemical formula below?. *
Answers: 2
Chemistry, 22.06.2019 10:30
Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?
Answers: 3
Chemistry, 22.06.2019 12:00
What is the lowest number energy level where a d sublevel is found
Answers: 1
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