warm up—3/16/15 1.what is the chemical formula for calcium phosphate? 2.what is the molar mass for...
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Warm Up—3/16/15
1. What is the chemical formula for Calcium phosphate?
2. What is the molar mass for calcium phosphate?
3. What is the percent composition of calcium in calcium phosphate?
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Warm Up—3/17/15 and 3/18
1. What is an empirical formula?2. What is a molecular formula?
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Warm up—3/19/15
1. What is the chemical formula for sodium oxide?
2. What is the chemical formula for lithium phosphate?
3. What is the molar mass for each of them?
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Warm Ups—3/20/15
1. Balance the following chemical reaction:a) Na + Cl2 NaCl
b) HCl + Ca(OH)2 H2O + CaCl2
c) Pb(NO3)4 + Al Pb + Al(NO3)3
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Warm Up—3/23/15
1. Calculate the molar mass of H3PO4.
2. How many moles are in 25.2 g of Mg?3. What is the mass of 0.780 mol Ca(CN)2?
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Warm Up—3/24/15
1. Balance the following reaction: KNO3 + (NH4)2O K2O + NH4NO3
2. What is the molar ratio for all of the reactants and products in the above reaction?
3. If I start with 4.0 mol of KNO3, how many moles of K2O would be produced?
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Warm Up—3/25/15
1. Do you have any questions/topics you want to review?
2. Take out your homework, and silently wait for further instructions.
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Warm Up—3/27/15
1. Name all the units you know that measure temperature.
2. What is volume?
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Warm Up—3/30/15
1. What is pressure?2. What are three characteristics of a gas?
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Warm Up--3/31/15
1. What is Boyle’s law?2. How do you convert degrees Celsius to
Kelvin?3. What is 12 degrees Celsius equal to in Kelvin?
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Warm Up—4/7/15
1. What was the mass of the 150-mL beaker and dried copper (from the lab)?
2. What was the mass of the empty 150-mL beaker?
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Warm up—4/8/15
1. What is Charles’ law?2. What is the mathematical equation for
Charles’ law?3. What unit must temperature be in for
Charles’ law?
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Warm Up—4/9/15
1. What is Gay-Lussac’s law?2. What is the mathematical equation for Gay-
Lussac’s law?3. List all of the pressure units that you know.
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Warm Up—4/9/15
1. How do you convert degrees celsius to kelvin?
2. What is 25 degrees celsius in kelvin?
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Warm Up-4/10/15
1. What is the combined gas law?2. What units must the temperature be in?3. What must remain constant for the
combined gas law to apply?
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Warm Up—4/10/15
1. What is Gay-Lussac’s law?2. What is the mathematical equation for Gay-
Lussac’s law?3. List all of the pressure units that you know.
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Warm Up—4/13/15
1. What is the ideal gas law equation?2. What is the ideal gas law constant with units?
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Warm Up—4/14/15
1. If I have 72 Liters of gas held constant at a pressure of 3.4 atm and a temperature of 225 K, how many moles of gas do I have?
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Warm Up--4/20/15
1. What do you know about acids?2. What do you know about bases?3. Complete and balance the following reaction:
NaOH + H2SO4
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Warm Up--4/21/15
1. What is a homogeneous mixture called?2. What is a solute?3. What is a solvent?4. Why is water known as the “Universal
Solvent”?
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Warm Up—4/27/15
1. What is concentration?2. What is a dilute solution?3. Convert 2000. mL to Liters.
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Warm Up—4/29/15
1. What is molarity equal to?2. What is the molarity of a solution with 2.0
mol of solute in 3000. mL of solution?
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Warm Up—4/29/15
1. What are 2 characteristics of an acid?2. What are 2 characteristics of a base?
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Warm Up—4/30/15
1. What are 2 characteristics of an acid?2. What are 2 characteristics of a base?
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4/30/15
1. If the pH of a solution is 4.2, is it acidic, basic or neutral?
2. What about if the pH is 9.6?3. What is the pH of a neutral solution?
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Warm Up—5/1/15
1. What is an Arrhenius acid?2. What is the formula for pH?3. What is an Arrhenius base?4. What is the formula for pOH?
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Warm Up—5/5/15
1. What is the chemical formula for hydrochloric acid?
2. What is the name for the following acids?a) H2SO4
b) HFc) HNO2
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Warm Up—5/6/15
1. What acid is in vinegar?2. What is concentration of H+ ions measured
in?3. What is a heterogeneous mixture?