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Acid-Base
Molecular Structure
Aspects of Chemical Reactions
Gas laws
Odds and Ends
100
Bases have a pH value in what range?
What is above 7.
100
The shape of a molecule of CH4 is called ____.
What is tetrahedral.
100
The substances written on the left side of the arrow in a chemical equation are called the ________.
What is reactants.
100
Standard atmospheric pressure equals _______.
What is 1 atm or 760 mmHg.
100
How many moles are there in 6 g of Carbon?
What is 0.5 mole.
200
In a basic solution, phenolphthalein indicator has what appearance?
What is dark pink.
200
Give the formula of a linear molecule.
What is CO2 or HCN or HCl or.....
200
The numbers put in to balance a chemical equation are called _____.
What is coefficients.
200
If a container holds 1 mole He gas, 2 moles Ne gas, and 3 moles Ar gas with a total pressure of 1200 torr, what is the partial pressure of the Ne gas?
What is 400 torr.
200
Define "solution."
What is "a homogeneous mixture."
300
Calulate the concentration of OH- ions in a solution with a pH equal to 5.
What is 1 x ten to the negative nine Molar.
300
Which of these substances contains ionic bonds? CS2, C6H12O6, NH3, LiF, SO3
What is LiF.
300
If a reaction takes place in a coffee cup calorimeter and after the reaction the temperature of the contents of the cup has increased, this tells you what about the flow of energy in the reaction?
What is it is exothermic, as heat was released from the system to the surroundings (the calorimeter).
300
If temperature and moles is held constant, Pressure and Volume of a gas are _________ proportional.
What is INVERSELY.
300
How much energy is released when 50g water is cooled from 45 degrees C to 20 degrees C?
What is 5.2kJ.
400
Calculate the pH of a 0.010M solution of KOH.
What is 12.
400
What is the shape and bond angle in an ammonia molecule?
What is trigonal pyramid and 109 degrees.
400
Write and balance the equation for the combustion of ethanol. ( C2H5OH )
What is 2 C2H5OH + 6O2 --> 4CO2 + 6H2O
400
A sample of a gas is in a closed container. If the Kelvin temperature is cut in half and the volume is cut in half, exactly how will the pressure change?
What is NO CHANGE.
400
The correct formula for ammonium phosphate is _____.
What is (NH4)3PO4
500
What volume of 0.30M NaOH is required to neutralize 30.mL of 0.20M H2SO4?
What is 40mL.
500
Sulfur dioxide molecules experience what kinds of intermolecular forces in the liquid state?
What is Dipole-Dipole forces, as it is a polar substance.
500
The reaction of 4 g of hydrogen gas and 10 grams of oxygen gas can produce what mass of water?
What is 11g of water.
500
The standard molar volume of any gas at STP equals ____ L/mol.
What is 22.4 L/mol.
500
What volume of 2.0M HCl solution contains 18g HCl?
What is 0.25L.