Chemical Reactions
In which type of reactions do two or more substances combine to produce a single substance?
Synthesis
How many nitrogen atoms are in the following compound?
NO3
one
In which reaction type do the reactants have more energy than products?
endothermic
What unit must temperature always be in?
Kelvins
Substances which turn blue litmus paper red are
Acids
The following equation is what type of reaction?
2HBr + 2Cl2 --> Br2 + 2HCl
Single Replacement
How many grams are in 1.2 moles of bromine?
95.88 grams
A temperature rise after mixing two solutions is an indication of what reaction type?
exothermic
When the amount of gas in a given volume is increased, pressure...
Increases
Solutions with a high concentration of hydroxide (OH-) are
Bases
Identify the Reaction:
A strip of magnesium wire burns in pure oxygen
Combustion
How many particles are in 1.5 moles of H2O?
9.03 x 1023 particles
In this type of reaction, energy is considered a reactant.
endothermic
Describe the relationship between volume and pressure
indirect, when volume is decreased, pressure increases
identify the conjugate base of the following reaction:
HClO4 + LiOH
ClO4-
What is the correct formula for magnesium nitrate?
Mg(NO3)2
How many moles are in 4 grams of Xenon?
0.03 moles
When water vaporizes, does entropy increase or decrease?
increases
A gas has a volume of 4.54 L at 1.65 atm and 75.0°C. At what pressure would the volume of the gas be increased to 5.33 L if the temperature is increased to 103°C?
P1= 1.52 atm
270 mL of a 9.70 M solution of glycerin water is diluted up to 850 mL. What is the molarity of the resulting diluted solution?
3.08 M
What is the missing product?
Sr(ClO3)2 + (NH4)2SO4 --> SrSO4 + _______
NH4ClO3
How many particles are in 5.6 grams of NaCl?
5.77 x 1023 particles
Ozone decomposing as shown by the equation 2O3 --> 3O2 would be what kind of change in entropy?
Increase
How many grams of CO2 gas would occupy 33.7 L of volume at a temperature of –22.2oC and a pressure of 990 mm Hg?
92 g CO2
What is the volume, in mL of a solution with a molarity of 23.0 M that contains 8 grams of NH4SO2
4.2 mL