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 do you need to go from one substance to another substance in a stoichiometry problem?
Mole ratio
What is the process of going from a solid to a liquid?
Melting
Which pH value represents neutral?
7
The 2 in SO2 represents what
Subscript
What is the molar mass of Ca(OH)2?
74.10 g/mol
What is the mole ratio between O2 and H2O in the reaction?
2H2 + O2 --> 2H2O
1 to 2
What is it called when you add heat?
Endothermic
What is the pH range of bases?
8-14
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
What is the pH of a 2.5 x10-12?
11.6
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 is the base in the neutralization equation?
NaOH + HCl --> NaCl + H2O
NaOH
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
2.5, 4.0, 7.0, 11.5, 14.0
Which is the weakest acid?
Which is the strongest base?
Weakest acid: 4.0
Strongest base: 14.0