Starting with the unbalanced equation for the combustion of ethanoic acid, CH3COOH (l) + O2 (g) →CO2 (g) + ? H2O (l) what coefficient should be placed in front of H2O to balance the hydrogen atoms?

In the reaction A + B → AB, which of the following will not increase the rate? (A) increasing the temperature (B) adding B (C) adding A (D) adding a catalyst (E) decreasing the temperature

Given the following equation 2H2O - > 2H2 + O2 what mass of oxygen would from 2.30 moles of water?

A reactivity hazard is one that can occur from mixing chemicals or exposing chemicals to the air. True or False.

A compound is 24.7% calcium, 1.2% hydrogen, 14.8% carbon, and the rest is oxygen. Write the empirical formula and name the compound.

A 225 g sample of french fries supplies 460 kilocalories of energy. 65% of those calories come from fat, which supplies 9 kilocalories of energy per gram. How many grams of fat are in the french fries?

A liquid would boil at the lowest temperature at a pressure of

The reaction 2HgO (s) ↽⇀ 2Hg (l) + O2 (g), you produce 1 mole of Hg (I). What is your percentage yield? A) 30% B) 20% C) 50% D) 100%

What are the concentrations of Cu2+, NH3, and Cu (NH3) 42 + at equilibrium when 18.8 g of Cu (NO3) 2 is added to 1.0 L of a 0.

Estimate the optimal number of neutrons for a nucleus containing 70 protons.

Students conduct an experiment in which steel wool is burned in a closed test tube. The steel wool reacts with an amount of oxygen equal to 1.43% of the mass of the steel wool. What is the correct value for the missing mass in the table?