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Gas
Laws

% yield and composition
Conversions

thermochemistry

100

what does charles law state?

change in volume is directly related to change in temperature

100

What is the percent composition of nitrogen in nitrogen monoxide?

19.73% nitrogen

100

What is the conversion of 35 mL to L?

0.035 Liters 

100

what is the difference between a negative and positive change in heat energy

heat energy evolved= (-)

heat energy absorbed=(+)

200

what does boyles law state?

change in volume is inversely related to change in pressure

200
what is the percent composition of fluorine in dioxygen difluoride?

54.29% fluorine

200

Convert 23 grams of Zinc to moles

0.35 moles

200

What equation can you use to find the specific heat of a substance?

specific heat=amount of heat(J)

/(mass in grams)(temp change °C)

300

given 1.41 moles of hydrogen at a pressure of 275 torr and at 15°C, what is the volume of the sample?

92.1 Liters 

300

Given 6.85 grams of O2 gas mixed with hydrogen sulfide forms with an exess of 2.26 grams of water.

what is the theoretical yield of water?

2.572 grams of water

300

Convert 75°F to Kelvin 

convert °F to °C then to Kelvin

= 297 K

300

calculate the specific heat of a substance that takes 74.9 joules to to increase the temperature of a 10.5 gram solid from 24.4 to 39.1 degrees celcius 

0.485 J/g°C

400
A mixture of xenon and helium is in a 7.86 flask at 85°C. Given the partial pressure of xenon is 0.221 and helium is 0.227, what is the total pressure in the container?

0.448 atm

400

What is the equation to solve for percent yield?

% yield= [actual yield/theoretical yield] x 100

400

how many grams of cobalt(III) fluoride are in 1.32 moles?

128 grams of CoF2

400

given 21.2 joules to increase the temperature of a 10.1 gram substance from 21.5 to38.6 degrees celsius, what is teh specific heat?

0.123 J/g°C

500

Given moles, molecules, and grams of different substances in different amounts, are you able to identify which has the largest volume? If so, how can you do this?

Yes, you can convert the substances to the same unit because of Avogadro's law to determine which one has the largest volume 

500

what is the percent yield when 3.57 grams of sulfur is mixed with carbon monoxide to form 6.24 grams of sulfur dioxide

87.5%

500

How many many moles of nitrogen monoxide is in 6.96x1022 molecules 

0.115 moles of nitrogen monoxide

500

Given: H2S(g) + O2-->H2O(l) + SO2(g) △H: -1120 kJ

10.9 grams of H2S react with O2, how much energy is evolved?

179 kJ