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Chemistry

Ayden Erickson

Name and distinguish the two components of a solution

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Chemistry

Burke

How many moles of ethylene (C2H4) can react with 12.9 liters of oxygen gas at 1.2 atmospheres and 297 Kelvin? C2H4 (g) + 3O2 (g) yields 2CO2 (g) + 2H2O (g) 0.21 moles 0.32 moles 0.63 moles 0.84 moles

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Chemistry

Eduardo Novak

The discovery of the electron as a subatomic particle was the result of

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Chemistry

Leonel

Describe how you would draw a diagram that shows the electric field between two particles that attract each other.

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Chemistry

Colby Irwin

What is the density of a substance that has a mass of 453g and a volume of 224mL?

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Chemistry

Hadassah

Earth's gravity pulls on both stationary objects and moving objects. true or false?

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Chemistry

Taylor Donaldson

What is a Benedict solution?

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Chemistry

Reilly Rhodes

True or false Infrared rays are electromagnet waves that are longer than radio waves but shorter than visible light rays.

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Chemistry

Ryker Yu

Oil became a major resource with the diffusion of motor vehicles early in the 1800s. Oil became a major resource with the diffusion of motor vehicles early in the 1800s. True False

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Chemistry

Natalie Pace

What is the kinetic energy of a 100-kg object that is moving with a speed of 12.5 m/s?

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Chemistry

Darrell Barrett

When are drops of indicator most likely added to the erlenmeyer flask?

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Chemistry

Sarahi Meyers

Assume that you dissolve some sugar in water. Explain how you could reverse this change.

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Chemistry

Cochran

An upward force acts on a proton as it moves with a speed of 2.0 * 105 meters/second through a magnetic field of 8.5 * 10-2 tesla running from east to west. What is the force and direction of the force on the proton?

2.7 * 10-15 N to the north

2.7 * 10-15 N to the south

1.7 * 10-14 N to the north

1.7 * 10-14 N to the south

1.7 * 10-14 N downward

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Chemistry

Marlon Dunn

The atomic mass of hydrogen-1 is 1.008 and the atomic mass of helium-4 is 4.003. Find the difference in grams between 4 moles of hydrogen and one mole of helium.

A) 4.81 x10-26 g

B) 0.029 g

C) 1.7 x 1022 g

D) 0 grams

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Chemistry

Jeremiah Wood

A piece if copper has a volume of 100.0cm3. If the mass of copper is 890 g, what is the density of copper?

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