315 Answered Questions for the topic General Chemistry

01/29/21

Convert the following into correct scientific notation:
I got the numbers right, but not the correct powers.a) 445.5 X 104 I got 4.455 X 10 to the? It is not power 4 and it is not power 2b) 7804.7 X 10-6 I got 7.8047 X 10 to the? It is not power -6 and... more
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General Chemistry Chemistry Inorganic Chemistry

12/14/20

Balancing Chemical Equations
Using your knowledge of chemical formulas and writing balanced chemical equations, write a balanced chemical equation when decasulfur tribromide gas reacts with solid selenium to form bromine gas... more
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General Chemistry

12/05/20

The temperature of a 5.0 g sample of Aluminum increases from 25°C to 30°C. How many joules of heat energy were added? (Specific heat of Al = 0.90 J/gK)
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General Chemistry Chemistry

09/21/20

What is the mass, in grams, of 9.89×1024 molecules of methanol (CH3OH)?

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General Chemistry Chemistry Organic Chemistry

09/14/20

Write which prefix is represented by each of the following sets of symbols
Write which prefix is represented by each of the following sets of symbols:-M-m-p-h-d-da-k-n
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General Chemistry Science Chemistry Homework

09/11/20

If you burn 33.7g of hydrogen and produce 301g of water, how much oxygen reacted?
In the combustion of hydrogen gas, hydrogen reacts with oxygen from the air to form water vapor.Hydrogen + Oxygen —> WaterIf you burn 33.7g of hydrogen and produce 301g of water, how much... more
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General Chemistry Chemistry

09/07/20

Avogadro's law:

What are the initial and final volume and initial and final amount of gas in this problem?:What volume is occupied by 3.00mol of argon gas at STP?
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General Chemistry Chemistry Buffer

07/11/20

Chemistry Buffer/titration problem
Hello,I am having trouble with this problem. I think I have part a) using the Henderson-Hasselbalch equation but part b) and c) are confusing me. I know I need to set the pH=7 and rearrange the HH... more
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General Chemistry

07/01/20

A 1.20 mol sample of hydrogen gas occupies 23.4L. How many mol of hydrogen are needed to fill a 101.5 L container at the same pressure and temperature?
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General Chemistry

07/01/20

If a sample of C3H6 stored in a 2.95-L container at 10.6 atm and 25.0C is transferred to a 6.96-L container at 5.00atm, what is the resulting temperature?

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General Chemistry

07/01/20

Calculate the volume of N2 that results when 0.138 L of the gas is heated from 308.0 K to 351.0 K at 3.00 atm.

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General Chemistry

07/01/20

How many mol of N2 gas will occupy a 4.01-L container at STP?
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General Chemistry

07/01/20

Calculate the number of mol of helium in a 2.21-L balloon at 25C and 2.64 atm of pressure
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General Chemistry

07/01/20

What is the volume of 88.8g of carbon monoxide at STP
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General Chemistry

07/01/20

A gas mixture has three components: N2, F2 and He. Their partial pressures are 0.60 atm, 0.16 atm, and 0.18 atm. What is the pressure of the gas mixture?
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General Chemistry

07/01/20

A sample of nitrogen gas has a volume of 2.59 L at 21 degrees Celsius. What volume will it occupy at 98C if the pressure and number of mol are constant?

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General Chemistry

07/01/20

sample of oxygen, at 24 C, occupies a volume of 5.15 x 102 mL at 1.50atm pressure. What pressure must be applied to compress the gas to a volume of 1.22x10^2 mL, with no temperature change?
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General Chemistry

06/24/20

Calculate the mass of oxygen in 65.2g of the compound c3h8o3
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General Chemistry

06/24/20

Convert 4.46 mol of hydrogen gas, to g
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General Chemistry

06/24/20

How many mol of O2 will react with 3 mol of ethanol?
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General Chemistry

06/24/20

What mass of potassium hydroxide would be required to produce 9.38g of the antacid milk of magnesia by the reaction of MgCl2 with KOH?
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General Chemistry

06/24/20

How many g of O2 will react with 8 mil of ethanol?
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General Chemistry Chemistry Chem College Chemistry

04/30/20

Finding the difference in solubility
Consider the solubility of Ca(OH)2 in each of the following solutions. For each solution, indicate whether the Ca(OH)2 solubility will increase, decrease, or not change as compared to the... more
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General Chemistry Chemistry Asap Hess's Law

04/28/20

Help! Please! Heat Capacity of Calorimeter & Hess's Law
You used a bomb calorimeter, or constant-volume calorimeter, but misplaced the information of heat capacity of the calorimeter. If you burn 1.250 g of an organic compound, with, ΔE = -24.30kJ/g,... more
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General Chemistry Chemistry

02/22/20

Chemistry Lab questions regarding synthesis of Ni(NH3)nCl2
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