Balancing Chemical Equations Answers
3 verified answers1 views
1
Free Preview
One half of a balanced chemical equation is shown.3Mg(OH)2 + 2H3PO4Which lists the numbers of each atom the other half of the equation would contain?
A
3 Mg, 2 P, 14 O, 12 HB
Mg, 2 P, 14 O, 6 HC
3 Mg, 8 P, 7 O, 6 HD
6 Mg, 6 P, 2 O, 12 H2
Free Preview
The equation below is for potassium oxide. 4K + O2 2K2O What is the ratio of atoms of potassium to atoms of oxygen?
A
1:2B
2:1C
4:1D
1:43
Which equation is balanced?
A
Mg3N2 + H2O 3MgO + 2NH3B
C3H8 + 5O2 H2O + 3CO2C
Zn + 2HCl ZnCl2 + H2D
3H2SO4 + 2Fe Fe2(SO4)3 + H24
Which best describes the law of conservation of mass?
A
The coefficients in front of the chemicals in the reactants should be based on the physical state of the products.B
Products in the form of gases are not considered a part of the total mass change from reactants to products.C
When reactants contain both a solid and a liquid, the solid counts toward the overall mass and the liquid does not.D
The mass of the reactants and products is equal and is not dependent on the physical state of the substances.Did you find these answers helpful?
Verified answers available
TRY EDGENUITY HACKS
- Auto Complete Exams
- Auto Complete Assignments
- Skip Videos Instantly
50,000+ students using this