Chemistry » Page 22

Chemistry

Lainey Hansen

Which of the following is a chemical property?

A.) Ability to burn

B.) Mass

C.) Density

D.) All of the above

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Chemistry

Joshua Coffey

What is the density of rock if it has a mass of 25 g?

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Chemistry

Miya Mckinney

In a popular classroom demonstration, solid sodium is added to liquid water and reacts to produce hydrogen gas and aqueous sodium hydroxide. part a write a balanced chemical equation for this reaction.

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Chemistry

Stacy Short

Calculate the vapor pressure lowering on an aqueous solution of glycerin that contains 180g of glycerin and 1000g of water at 25c. The vapor pressure of water at this temperature is 23.8torr.

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Chemistry

Gilberto Hayes

Why does one Oxygen atom bond with two Hydrogen atoms to form water? Why don't they bond in a different ratio?

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Chemistry

Reuben Haney

A fossilized bone contains about 65% of its original carbon-14. to the nearest hundred years, how old is the bone

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Chemistry

Aubrey Ross

Calculate the mass of 1.25 moles of Al2 (SO4) 3

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Chemistry

Elisha Copeland

which of Nature's erosions message do you think wears down a mountain or part 2 faster when water or ice why

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Chemistry

Gunnar Cantu

We dissolve 5.00 grams of sugar, C12H22O11, in water to make 1.000 L of solution. What is the concentration of this solution expressed as a molarity?

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Chemistry

Hadley Mcclure

What mass of carbon monoxide must be burned to produce 175 kj of heat under standard state conditions?

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Chemistry

Guest

The Wittig reaction involves coupling between a phosphonium ylide and a carbonyl-containing molecule. If a chemist wants to use the Wittig reaction to synthesize 3-methyl-3-hexene, which reactants should be used?

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Chemistry

Jazlene Norris

How many grams of zinc are needed to produce 25.0 g ZnCl2

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Chemistry

Jewel Logan

What property do most metals share

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Chemistry

Destinee Goodwin

Express this amount in dozens. (Use decimal form.)

75 pies

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Chemistry

Bentley Frey

A series circuit has two 5.0-ohm resistors and a power source of 9.0 volts. How will the current be affected and what will it be if another resistor (with a resistance of 7.5 ohms) is added to the circuit?

A. increase; 0.51 amps

B. increase; 0.72 amps

C. increase; 3.6 amps

D. decrease; 0.51 amps

E. decrease; 0.72 amps

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