Chemistry » Page 62

Chemistry

Colt Hendricks

It is easier to push a sofa across a rough surface like carpet than a smooth surface like a hardwood floor.

True

False

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Chemistry

Guest

Which of the following is not equal to 0.536 kilometers?

53.6 hectometers (hm)

536 meters (m)

536,000 millimeters (mm)

53,600 centimeters (cm)

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Chemistry

Finn Booker

Which theory states that our inner planets are rocky because rocks and metals combine at extreme temperatures, while the outer planets are gaseous because hydrogen compounds condense at colder temperatures?

Hubble

Doppler

Kepler

Nebular

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Chemistry

Nero

Most air pollution come from a) pollen b) forest fires c) volcanic eruptions d) burning fossil fuels

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Chemistry

Quintin Powell

How many neutrons does a calcium 48 isotope have

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Chemistry

Naomi Pruitt

Carbon disulfide burns in oxygen to yield carbon dioxide and sulfur dioxide according to the following chemical equation. CS2 (l) + 3O2 (g) → CO2 (g) + 2SO2 (g)

a. If 1.00 mol CS2 reacts with 1.00 mol O2, identify the limiting reactant.

b. How many moles of excess reactant remain?

c. How many moles of each product are formed?

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Chemistry

Myla Mcgee

What is the meaning of monovalent?

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Chemistry

Harry

What is a neutron and what charge does it have

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Chemistry

Giancarlo Pollard

Examples of mechanical and physical weathering in our neighborhoods

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Chemistry

Guest

Balance the redox reaction

KMNO4 + NH3 - --> KNO3 + MNO2 + KOH + H2O

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Chemistry

Paityn Solomon

A representation that shows the distribution of geologic features in a given area

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Chemistry

Duran

The process of evaporation describes which of the following changes of state?

solid ➡ liquid

gas ➡ solid

liquid ➡ gas

solid ➡ gas

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Chemistry

Shyanne Roy

What is the formula for potassium fluoride?

K2F

KF-

KF2

KF

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Chemistry

Nicolas Hurst

What can block light by placing obstacles in this path, but it much more difficult to block sound why

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Chemistry

Glenn Mccullough

If a 250 mL bag at 19°C, is

heated to 60°C, what will the

new volume of the bag be?

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