Questions from General Chemistry

Q: When solid red phosphorus, P4, is burned in air,

When solid red phosphorus, P4, is burned in air, the phosphorus combines with oxygen, producing a choking cloud of tetraphosphorus decoxide. Write the unbalanced chemical equation for this reaction.

Q: What are the substances to the left of the arrow in a

What are the substances to the left of the arrow in a chemical equation called? To the right of the arrow? What does the arrow itself mean?

Q: When copper(II) oxide is boiled in an aqueous solution

When copper(II) oxide is boiled in an aqueous solution of sulfuric acid, a strikingly blue solution of copper(II) sulfate forms along with additional water. Write the unbalanced chemical equation for...

Q: When lead(II) sulfide is heated to high temperatures in

When lead(II) sulfide is heated to high temperatures in a stream of pure oxygen gas, solid lead(II) oxide forms with the release of gaseous sulfur dioxide. Write the unbalanced chemical equation for t...

Q: Which of the following statements about chemical reactions is false?

Which of the following statements about chemical reactions is false? a. When balancing a chemical equation, all subscripts must be conserved. b. When one coefficient is doubled, the rest of the coef...

Q: Balance the following chemical equation: CuSO4(aq) +

Balance the following chemical equation: CuSO4(aq) + KI(s) CuI(s) + I2(s) + K2SO4(aq)

Q: Using different shapes to distinguish between different elements, draw a balanced

Using different shapes to distinguish between different elements, draw a balanced equation for the following reaction at the microscopic level. NH3(g) + O2(g) NO(g) + H2O(g)

Q: Balance the following chemical equations. MnO2(s) +

Balance the following chemical equations. MnO2(s) + CO(g) Mn2O3(aq) + CO2(g) Al(s) + H2SO4(aq) Al2(SO4)3(aq) + H2(g) C4H10(g) + O2(g)...

Q: If a sample of pure hydrogen gas is ignited very carefully,

If a sample of pure hydrogen gas is ignited very carefully, the hydrogen burns gently, combining with the oxygen gas of the air to form water vapor. Write the unbalanced chemical equation for this rea...

Q: For the unbalanced chemical equation HCl(g) + O2(

For the unbalanced chemical equation HCl(g) + O2(g) H2O(g) + Cl2(g) a. list the reactant(s). b. list the product(s).