7. A balanced chemical equation is a chemical equation in which is conserved and there are equal numbers of of each element on both sides of the equation.
a. Mass, molecules
b. Mass, atoms
c. Volume, molecules
d. Moles, atoms
8. What can be different between the products and reactants in a balanced chemical equation?
a. Total mass
b. Total moles of individual elements
c. Number of molecules
d. Types of atoms
9. Fill in the missing number to balance the equation.
1 C4H10O + ___O2 → 4CO2 + 5H2O
a. 4
b. 8
c. 6
d. 13
10. What is similar between the products and reactants in a balanced chemical equation?
a. Total moles of individual elements
b. Types of molecules
c. Number of molecules
d. Volume of particles
Answers: 1
Chemistry, 22.06.2019 06:30
The following reaction shows sodium carbonate reacting with calcium hydroxide. na2co3 + ca(oh)2 → naoh + caco3 how many grams of naoh are produced from 20.0 grams of na2co3? (molar mass of na = 22.989 g/mol, c = 12.01 g/mol, o = 15.999 g/mol, ca = 40.078 g/mol, h = 1.008 g/mol) 12.2 grams 15.1 grams 24.4 grams 30.2 grams
Answers: 2
Chemistry, 22.06.2019 17:00
The atoms of a solid aluminum can are close together, vibrating in a rigid structure. if the can is warmed up on a hot plate, what happens to the atoms?
Answers: 1
7. A balanced chemical equation is a chemical equation in which is conserved and there are equal nu...
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