150 Answered Questions for the topic Chemistry Conversion

Chemistry Conversion Ewq

09/16/15

How many atoms are in 1.97 mol of pure aluminum?
help me answer this please im about to have a mental breakdown
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Chemistry Conversion Chemistry

09/08/15

please help me with this chemistry conversion
Convert 92 kwh into calories.... My teacher got 7.9 x 10^4... It's right , but I have no idea how the exponent 4 is there. I just have no idea how my teacher got that . PLEASE HELP. I HAVE A QUIZ... more
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Chemistry Conversion

08/26/15

chemistry conversion problem
Ruth palladium bought 10 acres of land and built a house on 2 acres. They wanted to raise sheep on the remaining 8 acres. If it takes 1/8 hectare to raise a sheep, how many sheep can be raised on... more
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Chemistry Conversion Word Problem

08/26/15

An office heater puts out 2010 Btus (British thermal units) of energy in the form of heat per hour. Given that 1 Btu = 1.055 kJ, how many megajoules of energy i
The prefix kilo- means 103 and the prefix mega- means 106. Thus, 1 MJ = 103 kJ.
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Chemistry Conversion Word Problem

08/25/15

If a bullet travels at 993.0 m/s, what is its speed in miles per hour?
There are 100 cm in a meter, 2.54 cm in an inch, 12 inches in a foot, and 5280 feet in a mile.    I don't remember how to set up the conversion chart. Please help!
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Chemistry Conversion

08/23/15

what is 10^-12 in standard form?
I have to write a problem in standard form and give the answer in scientific notation.
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Chemistry Conversion

06/29/15

Find the volume in liters of 40 kg of carbon tetrachloride, whose density is 1.60g/cm^3
Find the volume in liters of 40 kg of carbon tetrachloride, whose density is 1.60g/cm^3
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Chemistry Conversion

06/03/15

chemistry conversion
The average lethal dose of heroin is 150 mg/kg of body weight. How many grams of heroine would be lethal for a 200 lb man?
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Chemistry Conversion

06/02/15

grams of O2 to grams of H2O
If i react 3.7 g of oxygen gas with excess hydrogen, how many grams of water will i produce.
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Chemistry Conversion

05/25/15

A chemistry question
What volume (ml) of 23% (m/v) LiCl solution will provide 36 grams of LiCl? Round to one decimal places, do not include units in your answer.
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Chemistry Conversion

04/09/15

Chemistry needed
027 (part 1 of 3) 10.0 pointsCopper reacts with silver nitrate through singlereplacement. If 3.03 g of silver are producedfrom the reaction, how much copper(II)nitrate is also produced?Answer in... more
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Chemistry Conversion

03/23/15

Chemistry Problem Help!!
1. Bacteria produces methane gas in sewage treatment plants. This gas is often captured or burned. If a bacterial culture produces 60.0mL of methane gas at 700.0  mm Hg what volume would be... more
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Chemistry Conversion

03/13/15

An aspirin tablet contains 81 mg of active ingredient. Calculate the number of tablets that can be made from 105005 kg of aspirin.
Show the formula and the work
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Chemistry Conversion

03/12/15

How many atoms are there in 8.56 X 10^-33 moles of NaCl?
Chemistry question, converting moldes to particles. 
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Chemistry Conversion Chemistry Lab

03/03/15

why are only four lines visible for hydrogen when calculations show many possible emission lines?
why are only four lines visible for hydrogen when calculations show many possible emission lines?
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Chemistry Conversion Science Chemistry Word Problem

02/19/15

A sample of gas under a pressure of 22.0 kPa has a volume of 33.0 cm3. The pressure is increased to 888 kPa, while the temperature remains constant. What v
A sample of gas under a pressure of 22.0 kPa has a volume of 33.0 cm3. The pressure is increased to 888 kPa, while the temperature remains constant. What volume will the gas occupy at this... more
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Chemistry Conversion Science Chemistry Word Problem

02/19/15

The pressure exerted by a gas is 45.0 atm while it has a volume of 475350 cm3. What would be the volume of this sample of gas at standard atmospheric pressure?
The pressure exerted by a gas is 45.0 atm while it has a volume of 475350 cm3. What would be the volume of this sample of gas at standard atmospheric pressure?   must show units, and must be... more
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Chemistry Conversion

02/18/15

Chemistry help!
A sample of a gas at room temperature occupies a volume of 32.0L at a pressure of 212torr . If the pressure changes to 1060torr , with no change in the temperature or moles of gas, what is the new... more
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Chemistry Conversion

02/09/15

How much energy (in J) is lost when a sample of iron with a mass of 26.0 g cools from 76.0 °C to 23.0 °C?
Express your answer with the appropriate units
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Chemistry Conversion

02/09/15

How many kilowatt-hours of energy are necessary to heat the air in the house from 9°C to 29°C? The heat capacity of air is 1.03 J/g°C.
A room contains 46kg of air. Express your answer using two significant figures.
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Chemistry Conversion

02/09/15

If its initial temperature was 33.1°C, what is its final temperature?
A block of aluminum with a volume of 99.0cm3 absorbs 65.2J of heat.  (density of aluminum =2.70 g/cm3)
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Chemistry Conversion

02/09/15

How much ice is required to cool a 15.0oz drink from 77°F to 33°F, if the heat capacity of the drink is 4.18 J/g°C?
When ice melts, it absorbs 0.33 kJ per gram. (Assume that the heat transfer is 100 % efficient.) Express answer using two significant figures.
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Chemistry Conversion

02/09/15

How much heat in joules is required to heat a 50g sample of aluminum from 73°F to 148°F?
Express answer using two significant figures.
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12/05/14

Mass of NaOH needed to make 500mL of 0.1M NaOH solution?
I'm working on a solutions lab and would like someone to look over my calculations please.   The question asked: "What mass of solid NaOH is needed to make 500mL of 0.1M NaOH solution?"   My... more
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Chemistry Conversion

10/09/14

solve for volume with density and mass given
Mass = 0.0098 x 10-5 mg and density of .879 g/ml what is the volume?  
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