Chemistry » Page 69

Chemistry

Aubrey

A 8.00 L tank at 26.9 C is filled with 5.53 g of dinitrogen difluoride gas and 17.3 g of sulfur hexafluoride gas. You can assume both gases behave as ideal gases under these conditions. Calculate the mole fraction and partial pressure of each gas, and the total pressure in the tank.

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Chemistry

Sydney Wallace

What type of wave is sound?

a. gamma

b. pressure

c. electromagnetic

d. light

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Chemistry

Angelique Huerta

4. State the difference between mass and weight.

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Chemistry

Harper Mcbride

Jayla has two wires that are both made of pure copper. One of the wires is bigger than the other wire. Which of the following is true about the particles of the wires? A. The large copper wire will have smaller particles than the small copper wire. B. The large copper wire will have larger particles than the small copper wire. C. The particles in both of the copper wires will be exactly the same. D. The particles of the copper wires will have different densities.

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Chemistry

Jenkins

84 g of water contains how many molecules of water?

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Chemistry

Jaslyn Parrish

What can a drop of liquid mercury be described as?

A) a pure substance and a compound

B) an impure substance that is reactive

C) an impure substance that is unreactive

D) a pure substance and an element

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Chemistry

Javion Rubio

Which of the following likely formed Mars' moons?

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Chemistry

Nicolas Gilmore

Which process involves mass movement within a substance?

a. conduction

b. convection

c. radiation

d. reflection

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Chemistry

Mariah Burch

A scientist observes that the electrical resistance of a superconducting material drops to zero when the material is cooled to very low temperatures. Which of the following statements best describes what the scientist is observing?

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Chemistry

Emanuel Wheeler

Which describes an object's speed in free fall?

a. The object accelerates until it reaches its terminal velocity.

b. The object falls at a constant speed because only one force acts on it.

c. The object falls faster and faster until it strikes the ground.

d. The object speeds up and then stops when air resistance equals gravity.

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Chemistry

Josiah Orr

Which metal can be cutted easiy?

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Chemistry

Corey Yu

Candidates do not always need a majority of votes to win an election

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Chemistry

Krish Andrade

Why should the mole to mole ratio be a whole number ratio?

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Chemistry

Samantha Mcgee

Why are strong acids also strong electrolytes? Also, is every strong electrolyte a strong acid?

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Chemistry

Grease

Yusef adds all of the values in his data set and then divides by the number of values in the set. What is Yusef most likely finding?

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