Answer:
The amount of oxygen in the reactants is 4 atoms. In the products, the oxygen is distributed to water (H2O) and O2 gas. Which coefficients would be placed in front of water and oxygen?
2 in front of water and 1 in front of oxygen
Kiley wants to balance the equation H2 + N2 → NH3. Which would be her first step in balancing an equation?
NOT adding the coefficient 3 in front of H2 and the coefficient 2 in front of NH3
Which is the balanced equation for V2O5 + CaS → CaO + V2S5?
V2O5 + 5CaS → 5CaO + V2S5
One half of a balanced chemical equation is shown.
3Mg(OH)2 + 2H3PO4
Which lists the numbers of each atom the other half of the equation would contain?
3 Mg, 2 P, 14 O, 12 H
Substances A and B react in a ratio of A + B → AB. Colin was combining substance A and substance B to form substance AB. He added 10 g of substance A and 45 g of substance B.
How much of substance AB would Colin make?
55g
Lana balanced an equation so that the result was 2C2H3Br + 5O2 → 4CO2 + 2H2O + 2HBr. Which most likely represents the starting equation?
NOT 2C4H3Br + 5O2 → 4CO2 + 2H2O + 2HBr
NOT C4H3Br + O2 → CO2 + H2O + HBr
Which best describes the law of conservation of mass?
The mass of the reactants and products is equal and is not dependent on the physical state of the substances.
