CH: 8 Chemical Reactions
Substance that you start with in a chemical reaction
Reactant
What is the molar mass of NaCl?
58.44 g/mol
What is the amount you ideally would get if the reaction was perfect?
Theoretical yield
What is the process of going from a solid to a liquid?
Melting
The 2 in SO2 represents what
Subscript
What is the percent composition of O if there is 5.5 grams of O in a total sample that is 15.5 grams?
35.48% O
What is the percent yield if the actual yield is 25.5 grams and the theoretical yield is 26.8 grams?
95.1%
What is it called when you add heat?
Endothermic
The 2 in front of the Mg and MgO, 2Mg + O2 --> 2MgO represents what
Coefficient
How many grams of H2O are in 3.2 x1023 molecules of H2O?
9.58 g
2 H2O + N2 -->NH4NO2
How many grams of NH4NO2 are produced from 45.5 grams of H2O?
80.87 grams
What is the process of going from a solid to a gas?
Sublimation
H2O + N2 --> NH4NO2 is what type of reaction
Synthesis
How many moles are in 25.3 g of CO2?
0.57 moles
2 H2O + N2 -->NH4NO2
If you get 2.5 moles of NH4NO2, how many molecules of H2O are needed.
3.0x1024 molecules
As you increase the temperature, particles move _____ and the space of the molecules _____.
faster, increases
What are the numbers needed in order to balance the following equation?
C + SO2 --> CS2 + CO
5C + 2SO2 --> CS2 + 4CO
How many grams of Ca(NO3)2 are in 3.5 moles of Ca(NO3)2 ?
574.35 grams
5C + 2 SO2 --> CS2 + 4CO
If you start with 10.5 grams of C, how many grams of CO will be produced?
19.59 grams
What form of matter has the most kinetic energy and therefore moves the fastest?
Gas