Questions Asked

kphilxo:
The concentration of an aqueous solution of iron(II) chloride is 0.0550 M. What is the molarity of each ion in this solution?
 updated one year ago
 1 reply
 1 Medal

kphilxo:
A 4.00 L sample of a gas is at a pressure of 2.00 atm. If the temperature remains constant, what will be its volume at 0.500 atm of pressure…
 updated one year ago
 No Medals Yet

kphilxo:
A 4.00 L sample of a gas is at a pressure of 2.00 atm. If the temperature remains constant, what will be its volume at 0.500 atm of pressure…
 updated one year ago
 No Medals Yet

kphilxo:
A sample of gas is in a cylinder of fixed volume. At 30.0 °C its internal pressure is 3200.
torr. What will be its pressure at 12.0 ° C?
…
 updated one year ago
 No Medals Yet

kphilxo:
What volume of dinitrogen pentoxide gas is produced when 500. mL of oxygen reactcompletely in the following equation?
2 N2(g) + 5 …
 updated one year ago
 No Medals Yet

kphilxo:
Given the reaction: 4NH3 + 3O2 → 2N2 + 6H2O. How many moles of N2 are produced when 1.0 mole of NH3 is consumed?
 updated one year ago
 5 replies
 No Medals Yet

kphilxo:
Calculate the percent yield for the following reaction if 233 g of NO2 reacted and 175 g of HNO3 were produced.
3NO2 + H2O 2HNO3+ NO
 updated one year ago
 4 replies
 1 Medal

kphilxo:
How many molecules of NH3 are produced when 3.00 moles of H2 react completely in the following equation?
N2 + 3H2 → 2NH3
 updated one year ago
 1 reply
 1 Medal

kphilxo:
In a reaction to produce sulfuric acid, the theoretical yield is 300.g. What is the percent yield if the actual yield is 280.g?
 updated one year ago
 No Medals Yet

kphilxo:
A sample of water releases 4.50 x 103 J of heat energy and its temperature drops from 80.0ºC to 68.0ºC. What is the mass of the water?
 updated one year ago
 1 reply
 No Medals Yet

kphilxo:
What mass of water at 10.0°C is needed to cool 500.0 mL of tea from 25.0°C to 18.3°C? Assume that density and specific heat of the tea are t…
 updated one year ago
 No Medals Yet

kphilxo:
What will be the final temperature of a system in which 150.0 g of water at 5.0°C are added to 1.00 L of water at 90.5°C?
 updated one year ago
 No Medals Yet

kphilxo:
How many kiloJoules of heat energy are required to raise the temperature of 400.0g of water from 18.0ºC to 25.0 ºC?
…
 updated one year ago
 No Medals Yet

kphilxo:
A 25.0g sample of magnesium at 22.0ºC absorbs 356.3 J of heat. The temperature of the magnesium rises to 36.5ºC. What is the specific heat…
 updated one year ago
 1 reply
 No Medals Yet

kphilxo:
How many kilojoules of energy are absorbed when 800.0g of water is heated from 20.0º C to 50.0º C?
 updated one year ago
 No Medals Yet

kphilxo:
suppose that there is a significant decline in the price of iron ore(used in making steel). What would happen to the equilibrium price and q…
 updated one year ago
 1 reply
 No Medals Yet

kphilxo:
How many different elements are present in the compound CoCl2?
 updated one year ago
 No Medals Yet

kphilxo:
how many grams of iron (density = 7.87 g/mL ) would occupy the same volume as 96.4 g of aluminum (density = 2.70 g/mL)?
 updated one year ago
 No Medals Yet

kphilxo:
A 48.0g piece of metal is dropped into 50.0mL of water in a graduated cylinder. The water level rises to 62.4mL. What is the density of the…
 updated one year ago
 No Medals Yet

kphilxo:
Divide: 3.724 *10^3
by 2.46* 10^4. When expressed properly the result is
 updated one year ago
 1 reply
 No Medals Yet

kphilxo:
A 48.0g piece of metal is dropped into 50.0mL of water in a graduated cylinder. The water level rises to 62.4mL. What is the density of the…
 updated one year ago
 No Medals Yet

kphilxo:
An empty glass tube weighs 37.3 g. When filled to the rim with water, it weighs 54.1 g. What is the volume of the glass tube?
 updated one year ago
 No Medals Yet

kphilxo:
The density of copper is 8.96g/mL. The mass of 7.00mL of copper is
…
 updated one year ago
 1 reply
 1 Medal

kphilxo:
How many kilojoules of energy are absorbed when 800.0g of water is heated from 20.0º C to 50.0º C?
 updated one year ago
 1 reply
 1 Medal

kphilxo:
In the reaction
Ag(s) + 2 HNO3(aq) → AgNO3(aq) + NO(g) + H2O(l)
The products are:
 updated one year ago
 4 replies
 1 Medal

kphilxo:
what is the specific heat of a solid that requires 124 J of heat to raise the temperature of 95.5g of the substance from 20.0ºC to 25.0ºC?
 updated one year ago
 2 replies
 No Medals Yet

kphilxo:
A 400.0g metal bar requires 6.446 kJ of energy to change its temperature from 18.0ºC to 95.0ºC. What is the specific heat of the metal?
 updated one year ago
 4 replies
 1 Medal

kphilxo:
An empty graduated cylinder has a mass of 68.00g. 50.0mL of water is added to the cylinder and its mass increases to 109.5g. What …
 updated one year ago
 No Medals Yet

kphilxo:
Calculate the density (in g/mL) of an unknown substance if 0.897 pounds occupy 13.5 inch3.
 updated one year ago
 No Medals Yet

kphilxo:
A police car on a highspeed chase travels at a speed of 85 mi/hr. The chase covered 82.3 miles of roadway. For how long were the police cha…
 updated one year ago
 No Medals Yet
 > Older questions