Chemistry » Page 144

Chemistry

Josh Barrera

What would happen if leaching did not orrur?

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Chemistry

Mcgrath

Where does geothermal energy come from? A. sunlight B. the oceans C. the land D. inside Earth E. wind

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Chemistry

Keon Pacheco

Dimethylnitrosamine (CH3) 2N2O, is a carcinogenic formed in foods from nitrite ions used as preservatives. Calculate each of the following for this compound. Show all work for full credit. a. molar mass b. What is the % N

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Chemistry

Jake

Does biomass energy come from petroleum?

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Chemistry

Obie

What type of bond would occur between carbon (C) and nitrogen (N) ?

A. Metallic bond

B. Ionic bond

C. Paired bond

D. Covalent bond

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Chemistry

Blake Moody

Consider a reaction of chemicals depicted as a + b → c +

d. suppose reaction of 21.8 grams of a with 40.7 grams of b gave 31.8 grams of

c. however, the theoretical yield of c for this reaction was 49.9 grams. what was the percent yield of chemical c?

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Chemistry

Abigail Henson

If 0.40 mol of H₂ and 0.15 mol of O₂ were to react as completely as possible to produce H₂O, what mass of reactant would remain?

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Chemistry

Dayton Sanford

Based on Reference Table F, which solution will contain the highest concentration of

iodide ions?

A

lead iodide

silver iodide

mercury (II) iodide

iron (11) iodide

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Chemistry

Dario Arellano

What is the volume of 2.25 moles on neon gas at STP? A-0.01L B-50.4L C-0.1L D-60.8L

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Chemistry

Maritza Dalton

What type of bonds do inorganic compound make

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Chemistry

Joyce Figueroa

Which compound is a saturated hydrocarbon? (1) hexane (3) hexanol (2) hexene (4) hexanal

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Chemistry

Messiah Welch

If a simple gas is collected over water. The atmospheric pressure is 778 mm and the temperature is 30°C. If the vapor pressure of water at 30 C is 31.8 mm, what is the pressure of the gas?

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Chemistry

Larry Buckley

In order for a substance to change from a liquid to a gas,

heat must be taken away

heat must be added

heat could be either added or taken away

heat must be kept constant

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Chemistry

Hannah Bauer

Properties are not affected by changes in temperature and pressure

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Chemistry

Darian Mckee

The recent increase in atmospheric CO2 levels is mainly a result of an increase in gross primary productivity. the biomass of the biosphere. the absorption of infrared radiation escaping from Earth. cellular respiration by the exploding human population. the burning of fossil fuels and wood.

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