Chemistry » Page 44

Chemistry

Kali Baker

How does the ozone layer over the Arctic change with the seasons?

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Chemistry

Jaydan Sanders

what is the isotope notation for an element with a mass number of 49, and 21 protons? what is the atomic number and number of neutrons, as well?

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Chemistry

Kadyn Bowen

Is milkshake a solution or a mixture.

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Chemistry

Captain Crunch

Is cutting a sheet of paper in half a physical or chemical change

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Chemistry

Marquise Monroe

Why do the planets keep orbiting the sun

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Chemistry

Alexus Dominguez

The lone pair of electrons in the ammonia allows the molecule to

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Chemistry

Kiley Bentley

How does a chemist count the number of particles in a given number of moles of a substance?

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Chemistry

Rosa Mendez

What is energy = energy out

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Chemistry

Kasey Gentry

The more kinetic energy there is an a sample of matter, the-

A. more energy is absorbed as heat

B. more energy is given off as heat

C. Lower the temperature

D. higher the temperature

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Chemistry

Maverick Luna

What volume of a 2.5 M NaOH solution is required to make 1 liter of a 0.75 M NaOH?

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Chemistry

Brooks Forbes

Which of the following statements is true about both nuclear fusion and nuclear fission? They occur in the sun. Heavy atoms are split. Two light nuclei combine. Some mass changes into energy.

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Chemistry

Bowman

What is the name of Nal?

a) sodium (1) iodine

b) sodium iodine

c) sodium monoiodine

d) sodium iodide

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Chemistry

Jimena Bush

How to round 32.6721 according to the number of significant digits.

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Chemistry

Randall

What is Absolute Zero?

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Chemistry

Quentin

Chemical equations need to be balanced in order to satisfy the law of:

A. molecular changes

B. conservation of mass

C. conservation of energy

D. products and reactants

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