Chemistry » Page 93

Chemistry

Markus Jennings

No one's even answering, so i'll just uh leave this here

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Chemistry

Larissa Werner

Suppose you have a sample of an unknown mineral with a mass of 86g. you placed the sample in agrduated cylinder filled with water to the 55mL mark. the sample sinks to the bottom of the cylinder and the water level rises to the 71 mL mark. wat is the density?

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Chemistry

Orlando Miller

What is a disadvantage of using a structural model to show a chemical compound? Structural models provide minimal three-dimensional information. Structural models do not identify the number and type of each atom. Structural models cannot distinguish between single, double, and triple bonds. Structural models cannot distinguish between different isomers of a compound.

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Chemistry

Emiliano

If a hydrogen atom gains an electron, then

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Chemistry

Azul

Alkalosis is a condition that occurs when: Select one: a. the level of carbon dioxide in the blood increases. b. dangerous acids accumulate in the bloodstream. c. slow, shallow breathing eliminates too much carbon dioxide. d. blood acidity is reduced by excessive breathing.

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Chemistry

Jasiah Ramirez

What is the total number of atoms contained in 2.00 moles of nickel?

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Chemistry

Arianna Irwin

What type of reaction is shown below?

XY + Z = Y + XZ

A. Single Replacement

B. Synthesis

C. Double Replacement

D. Decomposition

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Chemistry

Aleena Noble

For the gas phase decomposition of 1-bromopropane, CH3CH2CH2BrCH3CH=CH2 + HBr the rate constant at 622 K is 6.43*10-4 / s and the rate constant at 666 K is 8.28*10-3 / s. The activation energy for the gas phase decomposition of 1-bromopropane is

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Chemistry

Guest

Write the electron configurations of cu2 + and ag+. is each electron configuration consistent with the color you observed for each cation? explain.

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Chemistry

Eleanor Wells

Does a precipitate form when a solution of sodium acetate and a solution of ammonium sulfate are mixed together?

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Chemistry

Stella Dudley

How many grams of NaCl are in 150 mL of 3.36 M NaCl

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Chemistry

Enzo

One atom of silicon can properly be combined in a compound with

A. four atoms of calcium.

B. one atom of chlorine.

C. two atoms of oxygen.

D. three atoms of hydrogen.

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Chemistry

Carlee Larsen

8) Rubidium [Kr]5s has an atomic radius of 248pm. Tin, another period 5 element, has an

atomic radius of 140pm.

What would the correct atomic radius for xenon be? Xenon is also in Period 5 and a noble gas.

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Chemistry

Elvis Patterson

A 2.7 M solution contains

0 2.7 moles of solute per 1000 g of solvent.

2.7 moles of solute per 1000 mL of solution.

0 2.7 grams of solute per 100 mL of solution.

0 2.7 grams of solute 100 g of solution.

per

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Chemistry

Rowan Newman

What is the molar concentration of Cu2 + in a solution that is labelled 5 ppm Cu2+? a) 7.9x10^ (-5) M b) 7.9x10^ (-6) M c) 5.1x10^ (-6) M d) 5.5x10^ (-4) M

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