Chemistry » Page 13

Chemistry

Deborah Reed

How does decreasing the temperature of a solid affect the motion of the

particles in the solid?

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Chemistry

Belen Sutton

How has earth change during our current era?

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Chemistry

Maddox Barron

What are the phase transitions in which heat energy is gained?

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Chemistry

Marques Hensley

A cylinder contains 4.0 g of nitrogen gas. A piston compresses the gas to half its initial volume. Afterward, by what factor has the mass density of the gas increased?

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Chemistry

Hallie Zamora

The balanced equation below represents the reaction between magnesium metal and hydrochloric acid to produce aqueous magnesium chloride and hydrogen gas.

Mg (s) + 2HCl (aq) = = > MgCl2 (aq) + H2 (g)

A piece of Mg (s) has a volume of 0.0640 cubic centimeters. This piece of Mg (s) reacts completely with HCl (aq) to produce H2 (g). The H2 (g) produced has a volume of 112 milliliters and a pressure of 1.00 atmosphere at 298 K.

65 The volume of the piece of Mg (s) is expressed to what number of significant figures?

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Chemistry

Nico Mckay

What is the molarity of a solution prepared by dissolving 33.4 g of sodium chloride in some water and then diluting the solution to a volume of 300.00 mL?

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Chemistry

Marissa Hebert

Think about how pressure relates to volume and how gas behavior would change in different volumes. Which of the following will have the largest positive value for Sº? A) 1 mole of helium gas at 1 atm pressure. B) 1 mole of helium gas at 2 atm pressure. C) 1 mole of helium gas at 5 atm pressure. D) 1 mole of helium gas at 0.5 atm pressure

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Chemistry

Salvador Munoz

Does a reaction stop once it has reached equilibrium? Explain

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Chemistry

Caleb Mccullough

8 l of water at 19 ∘c are mixed with 1.1 l of water at 47 ∘c in an insulated container. what is the final temperature of the system? express your answer in ∘c

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Chemistry

Brynlee

How is wind deflation different from wind abrasion?

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Chemistry

Shiloh Bass

What is the pH of a solution with a hydronium concentration of 2.88 * 10-2 M?

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Chemistry

Armani Bradshaw

Which of the following characteristics is fixed, or definite, for all states of matter?

volume

shape

mass

energy

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Chemistry

Molly

Describe a change caused by kinetic energy as well as a change caused by potential energy.

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Chemistry

Bethany Carpenter

Which is more concentrated, a solution (1) prepared by dissolving 21.0 g of naf (0.500 mol) in enough water to make 500 ml of solution or a solution (2) prepared by dissolving 10.5 g (0.250 mol) of naf in enough water to make 100 ml of solution?

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Chemistry

Xander Lester

Hi i need hel does any one know what P3N2 means?.-.

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