...thank you
? 1.a barometer is carried to the bottom of a mine shaft, 1000m beneath earths surface. what can you say about the level of mercury in the barometer?
A)it should decrease by a factor of 10
B)it should decrease by a factor of 1000
C)the barometer reading will be higher than at the surface
D)it depends on the temperature
2.a refrigeration system contains 575 mL of gas at 22*c and 1.25 atm. the gas is compresseduntil it has a pressure of 2.00 atm and a temperature of -6*c. what is the new volume of the gas in the system?
A)98mL B)275mL C)325mL D)340mL
3.in the reaction Cl2+AgNO3+H2O+AgCl+HClO3+HNO3, chlorine acts both as an oxidizing agent and as a reducing agent. how is this possible?
A)some atoms of chlorine lose electrons to become chloride ions
B)some atoms of chlorine gain electrons to become part of chlorateions
C)both A & B
D)this is not an oxidation reaction
4.if you add 202g of Na2HPO4 to 2.00L of water, have you created a 0.750M Na2HPO4 solution? explain
A)yes
B)it will be less than .750
C)it will be more than .750
D)need more info.
5.calculate the molarity of a solution that contains 258g of acetic acid, CH3CO2H, in 945 mL of solution
A).25M B)2.7M C)4.55M D)25M
? 1.a barometer is carried to the bottom of a mine shaft, 1000m beneath earths surface. what can you say about the level of mercury in the barometer?A)it should decrease by a factor of 10
B)it should decrease by a factor of 1000
C)the barometer reading will be higher than at the surface
D)it depends on the temperature
2.a refrigeration system contains 575 mL of gas at 22*c and 1.25 atm. the gas is compresseduntil it has a pressure of 2.00 atm and a temperature of -6*c. what is the new volume of the gas in the system?
A)98mL B)275mL C)325mL D)340mL
3.in the reaction Cl2+AgNO3+H2O+AgCl+HClO3+HNO3, chlorine acts both as an oxidizing agent and as a reducing agent. how is this possible?
A)some atoms of chlorine lose electrons to become chloride ions
B)some atoms of chlorine gain electrons to become part of chlorateions
C)both A & B
D)this is not an oxidation reaction
4.if you add 202g of Na2HPO4 to 2.00L of water, have you created a 0.750M Na2HPO4 solution? explain
A)yes
B)it will be less than .750
C)it will be more than .750
D)need more info.
5.calculate the molarity of a solution that contains 258g of acetic acid, CH3CO2H, in 945 mL of solution
A).25M B)2.7M C)4.55M D)25M