Chemistry » Page 94

Chemistry

Rexy

What is the predicted order of first ionization energies from highest to lowest for aluminum, phosphorus, silicon, and sulfur?

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Chemistry

Diana Silva

Provide a method for separating the mixtures of two or three compounds, dissolved in a solvent diethyl ether. In each case one of the components will be a neutral compound. You should give your answer in the form of a flow chart (see Section 12.12). a. Benzophenone and tributylamine b. 4-Bromoaniline, 3-nitrobenzoic acid, and benzoin c. Fluorenone, octanoic acid, and dicyclohexylamine d. 1-Hexanol and 4-bromoaniline

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Chemistry

Denise Greene

8.000 moles of Cl2 (g) react with excess P4 (s) to produce 0.5741 mol of phosphorus trichloride. What is the percent yield for this reaction? P4 (s) + 6 Cl2 (g) → 4 PCl3 (l)

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Chemistry

Emerson Molina

5.75 moles of H2 gas to liters at STP

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Chemistry

Charlie Glover

3.01 x 10^23 atoms of rubidium

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Chemistry

Liam Suarez

What are the values of STP

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Chemistry

Talia Ruiz

Is helium is lightest monatomic element chemical properties

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Chemistry

Marisol Goodman

If the temperature is kept constant, what change in volume would cause the pressure of an enclosed gas to be reduced to one-third of its original value?

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Chemistry

Ray Mccullough

What is the molar mass of PbCl2

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Chemistry

Ireland Esparza

How do you know sodium is highly reactive?

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Chemistry

Jaelyn Livingston

What is the hydrogen ion concentration in a solution with a pH of 8.0?

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Chemistry

Robbins

Nina ran into a rough patch of pavement, but she thought she could ride right over it. Instead, the skateboard stopped suddenly and Nina ended up on the ground (see Figure above). Explain what happened.

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Chemistry

Jaliyah

In the periodic table of elements, what do all of the elements in row 2 have in common?

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Chemistry

Janae Levine

How do the following changes affect the value of the equilibrium constant for a gas-phase exothermic reaction:

1. removal of a reactant

A. increase equilibrium constant

B. decrease equilibrium constant

C. no effect

2. removal of a product

A. increase equilibrium constant

B. decrease equilibrium constant

C. no effect

3. decrease in the volume

A. increase equilibrium constant

B. decrease equilibrium constant

C. no effect

4. decrease in the temperature

A. increase equilibrium constant

B. decrease equilibrium constant

C. no effect

5. addition of catalyst

A. increase equilibrium constant

B. decrease equilibrium constant

C. no effect

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Chemistry

Lane Fletcher

The heat capacity of a sample should be divided by which quantity to find the specific heat capacity?

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