Unit 5 (Reactions)
An example of this would be a diet coke freezing in the freezer.
What is a physical change?
The number of tricycles that 8 wheels and 4 frames can make.
What is 2 tricycles?
The temperature of 18 degrees Celsius in Kelvin.
What is 291 K?
What is an exothermic reaction?
The molar mass of NaCO.
What is 51 g?
This will happen if you increase the volume of a gas and keep the temperature constant.
What causes the pressure of a gas to go down?
This is needed when chemical bonds are broken.
What is energy? (Energy is needed to break chemical bonds)
The number of grams in 5 mol of calcium (Ca).
What is 200.39 g?
Placing an empty and sealed water bottle in the freezer would cause the volume of the water bottle to do what?
What is the volume would decrease?
A type of chemical reaction produces carbon dioxide gas and water.
What is combustion?
The number of mols of NH3 that will be produced from 9 mol of H2 in this reaction:
3H2 + N2 --> 2NH3
What is 6 mol NH3?
The pressure of a gas is 3.1 atm at a volume of 30L. The volume is changed to 12L. What is the new pressure?
What is 7.75 atm?
Predict the products of this reaction:
Ca3N2 + F2 -->
(Don't worry about balancing the equation)
Ca3N2 + F2 --> CaF2 + N2
The number of grams of NaCl produced from this reaction, given 90g of Cl2.
2Na + Cl2 --> 2NaCl
What is 148.36g NaCl? (149.14g NaCl if you round)
The volume of a gas is 6L, the temperature is 34 deg C, the pressure is 2 atm. How many moles of gas are there?
What is 0.0476 mol?