Chemistry » Page 67

Chemistry

Kenzie Rasmussen

Which crime has the highest association with alcohol use?

robbery

manslaughter

murder

assult

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Chemistry

Armando Larsen

If 52 J of heat is added to an aluminum can with a mass of 28.4 g, what is its temperature change? Specific heat capacity of aluminum is 0.903 J/g∘C.

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Chemistry

Pranav Goodwin

Which of the following correctly represents the mole ratio between Al2 (SO4) 3 and CuSO4?

3 CuSO4 + 2 Al → Al2 (SO4) 3 + 3 Cu

1 mol Al2 (SO4) 3 : 3 mol CuSO4

2 mol Al2 (SO4) 3; 3 mol CuSO4

3 mol Al2 (SO4) 3: 2 mol CuSO4

2 mol Al2 (SO4) 3 : 3 mol CuSO4

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Chemistry

Jerry

What is the balance of C3H9Og + O2g = CO2g+H2Og

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Chemistry

Marely

If an object changes to a different state of matter is called physical property or chemical change or physical change

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Chemistry

Guest

Which scenario describes an interaction between two of Earth's spheres?

Water flows from a stream to a lake.

Gravity moves rocks to another location.

Lions use energy to catch other animals for food.

Bears dig big holes in the ground to protect their young.

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Chemistry

Cynthia Mcclain

The times in the past when continental glaciers covered large parts of Earth's land surface were the What?

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Chemistry

Ricky

How many electrons are contained in an ion formed from an atom of na?

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Chemistry

Lyric Pearson

Which word equation shows lithium oxide being formed from the reaction between oxygen and lithium?

1.) oxygen + lithium oxide to lithium

2.) lithium + oxygen to lithium oxide

3.) oxygen + lithium to lithium + oxide

4.) lithium oxide to lithium + oxygen

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Chemistry

Hawkins

Describe the attractive forces and repulsive forces that exist between two atoms as the atoms move closer together

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Chemistry

Jan Patel

An object in motion will cause which of the following?

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Chemistry

Luciana Moss

When a solution of barium nitrate and a solution of copper (II) sulfate are mixed, a chemical reaction produces solid barium sulfate, which sinks to the bottom, and a solution of copper (II) nitrate. Suppose some barium nitrate is dissolved in 120.00 g of water and 8.15 g of copper (II) sulfate is dissolved in 75.00 g of water. The solutions are poured together, and a white solid forms. After the solid is filtered off, it is found to have a mass of 10.76 g. The mass of the solution that passed through the filter is 204.44 g. What mass of barium nitrate was used in the reaction?

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Chemistry

Giana

A transformer has a primary voltage of 115 V and a secondary voltage of 24 V. If the number of turns in the primary is 345, how many turns are in the secondary?

A. 1,653

B. 690

C. 72

D. 8

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Chemistry

Valentino

What solid contains two types of bonds?

A.) Iodine

B.) Silicon (IV) Oxide

C.) NaCl

D.) Zinc

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Chemistry

Cruz Alexander

An atom of calcium has 2 valence electrons and an atom of sulfur has 6 valence electrons how many lone pairs of electrons are present in the lewis structure of calcium sulfur

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