General Chemistry Answers

Briefly explain what is meant by a decomposition reaction?

What is a well plate and what is it used for?

Briefly explain what is meant by a double replacement reaction?

 Briefly explain what is meant by precipitation?

A child receives a balloon filled with 2.42 L of helium from a vendor at an amusement park. The temperature outside is 311 K. When the child brings the balloon into an air-conditioned room, the volume of the balloon decreases to 2.30 L. What is the temperature of the air-conditioned house? Assume the pressure in the balloon stays the same.

Enter a balanced chemical equation for the reaction of solid rubidium with liquid water.    

Express your answer as a chemical equation. Identify all of the phases in your answer.

What unit do they measure heat with?

Exercise 4.59

The combustion of gasoline produces carbon dioxide and water. Assume gasoline to be pure octane 

(C8H18) and calculate the mass (in kg) of carbon dioxide that is added to the atmosphere per 2.6 kg

kg of octane burned. (Hint: Begin by writing a balanced equation for the combustion reaction.)

mCO2 =

What is the coefficient of H2O

H2O when the reaction is balanced? (Note: all coefficients must be integers).

Al(s)+H2O(l)→Al(OH)3(s)+H2(g)

What is the coefficient of  when the reaction is balanced? (Note: all coefficients must be integers).

9

6

4

3

what results in a chemical reaction

3. A tank car engineer steam cleans a tank car. Determine the moles of gas added to the tank if the tank car has a volume of 109,777 L, the steam added has a temperature of 125°C, and the pressure was 1.00 atm. 

What mass (in g) of butanol (C₄H₁₀O) is required such that its combustion produces 56.5 g of products?