Multiple Choice
Assume that the mixture of substances in drawing (1) undergoes a chemical reaction.Which of the drawings (2) -(4) represents a product mixture that is consistent with the law of mass conservation? 
A) drawing (2)
B) drawing (3)
C) drawing (4)
Correct Answer:

Verified
Correct Answer:
Verified
Q45: The chemical formula for magnesium nitride is<br>A)Mg(NO<sub>3</sub>)<sub>2</sub>.<br>B)Mg(NO<sub>2</sub>)<sub>2</sub>.<br>C)Mg<sub>3</sub>N<sub>2</sub>.<br>D)MgN<sub>2</sub>.
Q46: The chemical formula for the nitrite ion
Q47: What group of elements does the shaded
Q48: The number of moles of Li in
Q49: The number of atoms in 1 g
Q51: Which element indicated by letter in the
Q52: Which is not true?<br>A)Mendeleev ended each row
Q53: Identify the chemical symbol of element Q
Q54: Which of the following elements is a
Q55: How many electrons are in the ion,Fe<sup>2+</sup>?<br>A)24<br>B)26<br>C)28<br>D)56