Chemistry » Page 38

Cordell Wilkerson

Chemistry

A length of 16.45 m in centimeters.

Conv. Factor Set-up

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Chemistry

The quinine in tonic water shines a strange blue-white colour when lit with UV light. Explain what is happening here.

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Chemistry

If you burn 59.1 g of hydrogen and produce 528 g of water, how much oxygen is reacted

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Chemistry

What type of reaction is shown in this thermochemical equation? A + B + heat → C + D

endothermic

combination

decomposition

exothermic

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Chemistry

Which scientist was a great influence to others when he developed the heliocentric model about how the planets orbited the Sun?

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Chemistry

How temperature affects the state of matter?

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Chemistry

N2 + 3H2 2NH3 How many molecules of H2 are in the reaction? molecules How many nitrogen atoms are present? atoms How many moles of NH3 are formed? moles

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Chemistry

Submit At 25.0 C, a 10.00 L vessel is filled with 5.00 atm of Gas A and 7.89 atm of Gas B. What is the mole fraction of Gas B?

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Chemistry

Which energy change occurs during boiling? A. Some heat energy of the substance is lost. B. Heat energy of the substance remains the same. C. Most heat energy of the substance is lost. D. Heat energy is absorbed by the substance.

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Chemistry

How many liters of phosphine are formed when 0.42 L of hydrogen react with phosphorus

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Chemistry

Which sample of matter has the greatest distance between molecules at STP?

A)

N2 (g)

B)

NH3 (aq)

C)

C6H14 ()

D)

C6H12O6 (s)

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Camille Burgess

Chemistry

What happens is that passes through the Catapillar's in the small intestine

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Chemistry

One mole of a monatomic ideal gas is subjected to the following sequence of steps: a. Starting at 300 K and 10 atm, the gas expands freely into a vacuum to triple its volume. b. The gas is next heated reversibly to 400 K at constant volume. c. The gas is reversibly expanded at constant temperature until its volume is again tripled. d. The gas is finally reversibly cooled to 300 K at constant pressure. Calculate the values of q and w and the changes in U, H, and S.

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Madyson Santana

Chemistry

Write the complete balanced equation for the following reaction:

C7H6O + O2 yields CO2 + H2O

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Chemistry

An aluminum engine block has a volume of 4.61 L and a mass of 12.72 kg. What is the density of the aluminum in grams per cubic centimeter?

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