Chemistry » Page 71

Chemistry

Junior Green

7. Convert 5.2 cm of magnesium (Mg) ribbon to mm of Mg ribbon.

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Chemistry

Chase Gibbs

If you place a crystal substance on a tabletop, return to view it after some time passes, and find it as a powdered substance, which of the following processes most likely took effect? A. Efflorescence B. Distillation

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Chemistry

Jameson Jones

What changes occur in the nuclei of atoms involved in the reactions that fuel nuclear power plants?

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Chemistry

Maxim Curry

Calculate the molar mass for HCN.

0.2703 g/mol

2.703 g/mol

27.03 g/mol

270.3 g/mol

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Chemistry

Kaliyah Meza

This iron oxide mineral commonly has a reddish color and consistently has red streaks. What mineral is it?

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Chemistry

Braxton West

Which of the following transitions would release energy?

n=2->n=3

n=1 - > n=3

n=3 - >n=1

n=3->n=2

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Chemistry

Shyann Lucero

Which animal group actually saw a drop in the number of endangered and threatened species between 1995 and 2005?

a Fish

b. Reptiles

c. Birds

d. Mammals

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Chemistry

Keaton Andersen

Why does burning fossil fuels put ecosystems under pressure?

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Chemistry

Amity

What is the quantum number set of the ground-state electron that is found in helium (He) but not in hydrogen (H) ? (1, 0, 0, - ½) (1, 0, 1, - ½) (1, 1, 0, - ½) (1, 1, 1, - ½)

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Chemistry

Lashon

What must be true in order for magnetism to induce an electric current in a wire? There needs to be a switch in the circuit. There cannot be a switch in the circuit. The wire must be part of a closed circuit. The wire must be part of an open circuit. Mark this and return Save and Exit

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Chemistry

Emmy Maddox

How many electrons does phosphorous (P) need to gain to have a stable outer electron level?

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Chemistry

Journey Hatfield

What does the word estimate mean

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Chemistry

Duncan Castillo

Describe how each of these geological processes affect rocks as part of the rock cycle:

• Heat and pressure:

• Weathering, erosion, and deposition:

• Melting and cooling:

• Compacting and cementing:

• Uplift and exposure:

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Chemistry

Cade Barnes

As you go down a group the elements generally become (more/less) metallic.

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Chemistry

Kristina Cantu

What element has three half filled orbitals in the 3p sublevel

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