315 Answered Questions for the topic General Chemistry

General Chemistry

03/28/17

15.0 miles of gas are in a 7.00 L tank at 21 degrees C. Calculate the difference b/w methane and an ideal gas under these conditions.
The van der waals constants for methane are a= 2.300 L^2•atm/mol^2 and b= 0.0430 L/mol. 
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General Chemistry

03/28/17

15.0 miles of gas are in a 7.00 L tank at 21.6 degrees C. Calculate the difference in pressure b/w methane and an ideal gas under these conditions.
The van der waals constants for methane are a= 2.300 L^2•ATM/mol^2 and b= 0.0430 L/mol. 
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General Chemistry

03/28/17

CAlculate the partial pressure of diethylether. And calculate the total pressure on the container
A sample of 5.50 mL of diethylether (C2H5OC2H5; density= 0.07134 g/mL) is introduced into a 6.50 -L vessel that already contains a mixture of N2 and O2, whose partial pressures are Pn2= 0.751 atm... more
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General Chemistry

03/27/17

15 miles of gas are in a 7.00 L tank at 21.0 degrees C. Calculate the difference in pressure between methane and an ideal gas under these conditions.
The van der waals constants for methane are a= 2.300 L^2 and b= 0.0430 L/mol.
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General Chemistry

03/25/17

Calculate the partial pressure of diethylether.
A sample of 5.50 mL of diethylether (C2H5OC2H5; density= 0.7134 g/mL) is introduced into a 6.50 -L vessel that already contains a mixture of N2 and O2, whose partial pressures are Pn2= 0.751 atm... more
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General Chemistry

03/25/17

How many grams of CaH2 are needed to generate 144L of H2 gas if the pressure is 824 torr at 22 degrees C?
calcium hydride reacts with water to form hydrogen gas 
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General Chemistry

03/24/17

How many grams of CaH2 are needed to generate 144L of H2 gas if the pressure is 824 torr at 22 degrees C?
CaH2 (calcium hydride)
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General Chemistry

03/24/17

What volume would the propane occupy at STP?
An aerosol spray can with a volume of 250mL contains 2.30g of propane gas (C3H8) as a propellant.
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General Chemistry

03/24/17

If the can is at 22 degrees C, what is the pressure in the can?
An aerosol spray can with a volume of 250 mL contains 2.30g of propane gas (C3H8) as a propellant. 
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General Chemistry

03/24/17

If the sign contains neon at a pressure of 1.72 torr at 34 degrees C, how many grams of neon are in the sign?
A neon sign is made of glass tubing whose inside diameter is 2.5 cm and whose length is 5.5 m
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General Chemistry

03/05/17

Draw a representation of the reactants
Draw a representation of the reactants and products that would remain after complete reaction of the 3 equivalents of reactant A and 1 reactant of reactant B (Ex. A + B --> C)
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General Chemistry Chemistry Chem Question

03/01/17

If 30g of CuSO4 • 5H20 are present, how many moles of CuSo4 • 5H2O are present?
I need help with this chemistry question please? Silly me didn't copy fast enough when my instructor was working on the problem on the board & was also focusing how he was solving it as well. I... more
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General Chemistry Chemistry Volume

02/28/17

What volume of a 1.50 M HCl solution should you use to prepare 3.50 L of a 0.300 M HCl solution?
 college freshman chemistry 1
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General Chemistry

02/19/17

It is about chemistry
 (a) How much the weight of Na2CO3 was used to produced 50 ppm of carbonate?   (b) Why buffer 9 seldom used in analysis?
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General Chemistry

02/02/17

what is the normal blood concentration o K
what is the normal blood concentration of K
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General Chemistry

01/30/17

Finding a mass
The concentration of carbon monoxide in an urban apartment is 48 μg/m^3. What mass of carbon monoxide in grams is present in a room measuring 11.5 x 11.5 x 20.5 ft?
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General Chemistry

01/30/17

0.400L of aluminum metal has a mass of 1.08kg. What is the density of aluminum in the units g mL^-1
0.400L of aluminum metal has a mass of 1.08kg. What is the density of aluminum in the units g mL^-1
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11/25/16

Finding how high a column of water in meters can be with the density of water and mercury
I'm struggling to understand what the question is asking me and what concepts it is trying to test...    If the density of water is 1.00g/mL and the density of mercury is 13.6g/mL, how high a... more
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General Chemistry Chemistry

11/04/16

When the following solutions are mixed together, what precipitate (if any) will forms? Write the reaction equation for all the cases and write the net ionic equ
When the following solutions are mixed together, what precipitate (if any) will forms? Write the reaction equation for all the cases and write the net ionic equation for only those reactions that... more
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General Chemistry Chemistry

11/04/16

A sample of 45.1 g of methane gas (CH4(g)) has a volume of 6.20 L at a pressure of 2.90 atm. Calculate the temperature.
A sample of 45.1 g of methane gas (CH4(g)) has a volume of 6.20 L at a pressure of 2.90 atm. Calculate the temperature.
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General Chemistry

10/12/16

for this reaction at equilibrium, which changes will increase the quantity of Fe?
for this reaction at equilibrium, which changes will increase the quantity of Fe?   3Fe + 4H2O = Fe3O4 + 4H2   1-Increase Temperature 2- Decrease Temperature 3-adding Fe   I just know the... more
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General Chemistry Word Problem Stoichiometry Molarity

10/09/16

Stoiciometry
A solution was prepared by dissolving 4.75g of sodium chloride and 0.575g of calcium chloride in water and diluting to a volume of 500.0mL. What is the molarity of chloride ions in this solution?
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General Chemistry Conversion Stoichiometry

10/09/16

Stoiciometry
What volume of 0.100 M barium chloride contains 0.125g of barium chloride?
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General Chemistry

10/09/16

How do I make a 1% solution of Iron Chloride (III) Hexahydrate
How do I make a 1% solution of Iron (III) Chloride Hexahydrate?
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General Chemistry

09/21/16

What are the two ways that temperature affects the rate of a reaction?
What are the two ways that temperature affects the rate of a reaction?
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