Gas Laws
A sample of oxygen gas collected in the lab occupies a volume of 250. mL when its pressure is 720. mmHg. What volume will the gas occupy at a pressure of 760. mmHg if the temperature is held constant?
What is 237 mL
What is the pH of a solution with [H+]=4.2x10-1
pH=1.4
The balanced chemical equation for the reaction of solid carbon and gaseous oxygen to form gaseous carbon dioxide.
What is C(s) + O2(g) ---> CO2(g)
What is the element with the following configuration: 1s^2 2s^2 2p^6 3s^2 3p^3?
P
CO2 + 2LiOH --> Li2CO3 + H2O How many moles of lithium hydroxide are required to react with 20 mol of CO2?
What is 40 mol LiOH?
A sample of neon gas occupies a volume of 742 mL at 35˚C. What volume will the gas occupy at 60˚C if the pressure is held constant?
What is 802 mL
You are making a 1.0M NaOH solution using 0.100 L of a 15M NaOH solution. To what total volume should you dilute the solution?
1.5L
Balance the following equation: _____H2 + ____O2 ---> ____H2O
2 H2 + 1O2 ---> 2H2O
What is the electron configuration of F?
What is 1s^2 2s^2 2p^5
Mg + 2HCl --> MgCl2 + H2 What mass of hydrogen is produced from the reaction of 75 g HCl (MM=36.5 g/mol) and excess Mg?
What is 2.0 g H2?
A 8.3 L gas sample at standard pressure is compressed to a volume of 2.8 L and the temperature is increased from 30˚C to 65˚C. What is the new pressure of the gas in atms?
What is 3.3 atm?
What is the pH of a solution with [H+]=8.7x10-8
pH=7.1
Balance the following equation: ____C3H8 + _____O2 ---> ____CO2 + ____H2O
1C3H8 + 5O2 ---> 3CO2 + 4H2O
What is the abbreviated electron configuration of Ba?
What is [Xe] 6s^2
Ammonia decomposes to produce nitrogen and hydrogen gases. How many moles of H2 can be formed by the decomposition of 0.145 moles of ammonia?
What is 0.218 mol H2?
A volume of air occupying 3.00L at .765atm is compressed to a pressure of 1.43atm. The temperature remains constant. What is the new volume?
Calculate the molarity of a solution made by putting 55.8g of NaNO3 into a beaker and diluting it to 2.50L
.263 M
Balance the following equation: ____P + _____O2 --->_____P2O5
4P + 5O2 ---> 2P2O5
What is the element with the following configuration: 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^6?
What is Fe?
2KClO3 --> 2KCl + 3O2 How many grams of KCl are produced if 5.0 g of KClO3 is decomposed?
What is 3 g KCl?
An 0.921 mol sample of hydrogen gas at a temperature of 7.00 degrees Celsius is found to occupy a volume of 28.5 liters. The pressure of this gas sample is?
What is 564mmHg
What is the [H+] of a solution with pH=12
[H+]=1.0x10-12
Balance the following equation: ___NaBr + ____CaF2 ---> ____NaF + ____CaBr2
2NaBr + 1CaF2 ---> 2NaF + 1CaBr2
Electronic Configuration of Copper
1s2 2s2 2p6 3s2 3p6 3d10 4s1
Aluminum oxide reacts with iron to form Fe3O4 and Aluminum. Determine with limiting reactant when 5 moles of aluminum oxide reacts with 7 moles of iron.
What is iron?