Chemistry » Page 37

Chemistry

Rhianna Trevino

What kind of solid is crystalline boron

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Chemistry

Aracely Stark

Cl2F2 (g) + 2NaCl (aq) = 2NaF (aq) + Cl2 (g)

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Chemistry

Hailey Schaefer

Is there more than100 elements in the periodic table?

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Chemistry

Austin

The mole concept will most likely be used in

calculating the average height of a mountain range.

measuring how many liters of gasoline are poured into a tank.

determining how many ozone molecules are lost in the atmosphere.

finding the mass of a piece of steak in a butcher shop.

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Chemistry

Haley

Why are electrons held into the nucleus?

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Chemistry

Penelope Decker

Burning soybean oil is similar to what other chemical reaction?

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Chemistry

Guest

Matter through which a wave travels defines what term

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Chemistry

Hope Valdez

Describe how you would prepare 5.00 liters of a 6.00 solution of potassium hydroxide

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Chemistry

Valery Downs

How quickly or slowly a substance heats or cools is measured by its

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Chemistry

Aidan Zavala

Which of the following is true concerning the noble gases? A. Their highest occupied s and p sublevels are filled. B. They belong to Group 8A. C. They are sometimes referred to as the inert gases. D. all of the above

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Chemistry

Zachariah Gibbs

Which of the following is responsible for passing albinism from a parent organism to its offspring?

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Chemistry

Sassie

Rubidium has two naturally occurring isotopes, rubidium - 85 (atomic mass = 84.9118 amu; abundance = 72.15%) and rubidium - 87 (atomic mass = 86.9092; abundance = 27.85%). Calculate the atomic weight of rubidium

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Chemistry

Porche

You are asked to analyze an aqueous solution (X) and determine what's in it. You pour some of your sample X into a test tube and add a few drops of an acid. No observable reaction occurs. Then you add a few drops of barium chloride solution to your mixture (containing an aqueous solution X and the acid), a white precipitate forms.

1. What can you conclude about the solution X, based on this experiment?

(Circle as many choices as applies.)

A. Solution X must contain a covalent (molecular) compound.

B. Solution X does not react with barium chloride.

C. This experiment is inconclusive, and does not provide any information about the contents of X.

D. Solution X must contain sulfate ion.

E. Solution X does not contains any ionic compound.

F. The solution X contains an ionic compound.

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Chemistry

Cooper Knox

Which of the following items represents a chemical change? burning

melting

evaporation

freezing

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Chemistry

Myles Schultz

In what phase of matter do particles fill the entire container in which their placed?

A. Liquid

B. Gas

C. Solid

D. Frozen

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