What does the Law of Conservation of Mass say about a chemical reaction?
A) Mass increases as atoms are rearranged during a chemical reaction.
B) To balance a chemical equation, additional mass may be created.
C) Mass is not measurable in a chemical reaction.
D) In a chemical reaction, mass is neither created nor destroyed.
From the Periodic table, it can be determined that iron (Fe) has an atomic mass of 56 amu, oxygen (O) has an atomic mass of 16 amu, and hydrogen (H) has a mass of 1 amu. What would the atomic mass of Fe(OH)3 be?
A) 107 amu
B) 73 amu
C) 75 amu
D) 219 amu
4 answers
for question 1 it is answer D, or "in a chemical reaction, mass is neither created nor destroyed." and for question 2 it is answer A, or 107 amu
Chemical Reactions Quick Check:
What are the reactants in a chemical formula?
**the atoms prior to the chemical reaction, found on the left side of the equation
What does the Law of Conservation of Mass say about a chemical reaction?
**In a chemical reaction, mass is neither created nor destroyed.
Which of the following molecules shows two atoms of hydrogen (H)?
Responses
**H2SO4
From the Periodic table, it can be determined that iron (Fe) has an atomic mass of 56 amu, oxygen (O) has an atomic mass of 16 amu, and hydrogen (H) has a mass of 1 amu. What would the atomic mass of Fe(OH)3 be?
Responses
**107 amu
What are the reactants in a chemical formula?
**the atoms prior to the chemical reaction, found on the left side of the equation
What does the Law of Conservation of Mass say about a chemical reaction?
**In a chemical reaction, mass is neither created nor destroyed.
Which of the following molecules shows two atoms of hydrogen (H)?
Responses
**H2SO4
From the Periodic table, it can be determined that iron (Fe) has an atomic mass of 56 amu, oxygen (O) has an atomic mass of 16 amu, and hydrogen (H) has a mass of 1 amu. What would the atomic mass of Fe(OH)3 be?
Responses
**107 amu
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3 answers