Chemistry » Page 27

Chemistry

Potts

Do carbon atoms gain, lose, or share electrons?

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Chemistry

Alfredo Camacho

In aqueous solution the ag ion forms a complex with two ammonia molecules. Write the formation constant expression for the equilibrium between the hydrated metal ion and the aqueous complex. Under that, write the balanced chemical equation for the first step in the formation of the complex.

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Chemistry

Reese Frank

Which samples are substance? (A) HCI (aq) (B) NaCI (aq) (C) HCI (g) (D) NaCI (s)

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Chemistry

Heath

2. If you add water to dilute a solution, what happens to the molarity of the compound in the

solution? Explain

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Chemistry

Macie Fitzpatrick

Which of the following is NOT true of nitrogen fixation?

(A) it is a process that occurs exclusively in some species of prokaryotes

(B) it sometimes occurs in bacteria that are mutualistic symbionts in plant roots

(C) it is the metabolic process that converts N2 to NH3

(D) it is one of several metabolic processes that make atmospheric nitrogen available for use by other organisms

(E) some species of cyanobacteria have specialized nitrogen-fixing cells

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Chemistry

Donavan Bowen

What two pieces of information do u need to describe force

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Chemistry

Ryder Parrish

Why are the atomic masses for most elements not whole numbers?

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Chemistry

Tyke

An aqueous solution is 0.387 m in hcl. what is the molality of the solution if the density is 1.23 g/ml?

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Chemistry

Briggs

Carbon monoxide reacts with oxygen to form carbon dioxide.

2 CO (g) + O2 (g) → 2C02 (8)

In a 1.00 L flask, 3.40 atm of CO reacts with 2.60 atm of O2. Assuming that the temperature remains constant, what is the final pressure in the flask?

4.30 atm

2.60 atm

3.40 atm

6.00 atm

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Chemistry

Morgan Frye

The nerves that Branch out from the spinal cord and connect to the body

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Chemistry

Alexandra Erickson

The term southern oscillation most nearly refers to

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Chemistry

Nevaeh Gonzales

Which kelvin temperature is equivalent to 20°C

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Chemistry

Itsy

When a piece of magnesium metal is added to hydrochloric acid, what gas is produced?

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Chemistry

Edgar Chavez

A 10 pound block of lead-210 has a half-life of 22 years. What percentage of the block still contains lead-210 after 60 years?

1.5%

15%

77%

27%

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Chemistry

Hale

Combined gas law problem: a balloon is filled with 500.0 mL of helium at a temperature of 27 degrees Celsius and 755 mmHg. As the balloon rises in the atmosphere, the pressure and temperature drop. What volume will it have when it reaches an altitude where the temperature is - 33 degrees Celsius and the pressure is 0.65 atm?

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