Chemistry » Page 121

Chemistry

Keenan Mckinney

Which atom in the ground state requires the least amount of energy to remove its valence electron? (1) lithium atom (2) potassium atom (3) rubidium atom (4) sodium atom

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Chemistry

Jordan Evans

Which of the following is the correct Lewis structure for ammonia (NH3) ? Note: Hydrogen and nitrogen have one and five valence electrons respectively.

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Chemistry

Tripod

Which statement about the electron-cloud model is true?

A. It is the currently accepted atomic model.

B. it can easily be replaced by existing models

C. It specifies the location and momentum of an electron.

D. It does not explain the formation of emission lines

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Chemistry

Sloane Yoder

To the nearest gram, what is the mass of one spoonful of sugar?

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Chemistry

Darrell Barrett

What is the molarity of a solution that contains 28g of KOH in 2L of solution?

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Chemistry

August Guzman

For any enzyme, what would the initial velocity be, as a percent (%) of Vmax, if the [S] was equal to Km/10?

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Chemistry

Goonie

It was determined through analysis that a compound, sodium carbonate with a molar mass of 263 g/mol contained 68.4% water. determine the toilet number of water molecules in this hydrate

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Chemistry

Shelly

The combustion of a hydrocarbon X (30 cm3) with 350 cm3 of oxygen at STP resulted in the formation of 440 cm3 of gaseous products. The volume of gases was reduced to 360 cm3 when the excess O2 was removed and then reduced by half when bubbled through NaOH.

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Chemistry

Pranav

Which of these is an acid A (Vinegar

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Chemistry

Elena Golden

How are RNA and DNA used to make proteins?

A-RNA has coded instructions for making proteins, and DNA translates the code.

B-DNA forms the monomers that make up RNA, and RNA forms the monomers that make up proteins.

C-RNA forms the monomers that make up DNA, and DNA forms the monomers that make up proteins.

D-DNA has coded instructions for making proteins, and RNA translates the code.

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Chemistry

Zackery Cisneros

The organic compound aldehyde contains which functional group?

amide

carbonyl

carboxyl

hydroxyl

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Chemistry

Elias

Which astronomer supported the belief that earth was at the center of the universe while all other planets and celestial objects orbited around it

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Chemistry

Kyle Harmon

When a solution of LiC2H3O2 reacts with a solution of MgSO4, what is the net ionic equation?

No reaction

Mg+2 (aq) + C2H3O2 - (aq) → Mg (C2H3O2) 2 (s)

Mg+2 (aq) + 2C2H3O2 - (aq) → Mg (C2H3O2) 2 (s)

2Li + (aq) + SO4-2 (aq) → Li2SO4 (s)

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Chemistry

Winston Gallagher

What are the relations between Electrochemistry and Cancer?

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Chemistry

Saniyah Dudley

Which of the following are sources of low-level radiation? A) medical X-rays B) nuclear weapons testing C) buring of fossil fuels D) all of the above E) a and c only

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