Chemistry » Page 78

Chemistry

Davon

Why do the elements at the bottom of the periodic table have lower ionization energies than their group/family partners at the top of the periodic table?

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Chemistry

Carlie Murillo

What is mass? How is the mass of an object

determined?

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Chemistry

Mina Cochran

Which is the correct expression for Keq when the chemical reaction is as follows:

N2 + 3H2 2NH3.

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Chemistry

Jaime Ballard

What is a relationship where one organism benefits while the other gets nothing

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Chemistry

Essence Baird

A 0.750-g sample of a compound that might be iron (II) chloride, nickel (II) chloride, or zinc chloride is dissolved in water, and 22.40 mL of 0.515 M AgNO3 is required to completely precipitate all the chloride ion as AgCl. Name the compound, and write its formula.

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Chemistry

Sneakers

What is the molarity of a solution of naoh if 2 liters of the solution contains 4 miles of naoh

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Chemistry

Desiree Hoffman

How many grams of sodium chloride are in 250mL of a 2.5M NaCI solution

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Chemistry

Jabari Bird

What is the tool to determine the relative size of things

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Chemistry

Tianna

J. J. Thomson 's experiment disproved the theory that an atom?

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Chemistry

Deshawn Mays

Select all that apply. Where would you expect to find plasma?

the atmosphere of stars

the atmosphere around lightning bolts

the atmosphere around a nuclear explosion

the atmosphere around pressurized super-heated water

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Chemistry

Isai Esparza

According to Bohr's model of the atom, in which orbitals do electrons have the least energy?

innermost orbitals

outermost orbitals

middle orbitals

I think the answer is innermost orbitals ... i may have just taken the test; )

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Chemistry

Abbie Price

A piece of sodium metal reacts completely with water to produce sodium hydroxide and hydrogen gas. the hydrogen gas generated is collected over water at 25.0 degrees celsius. the volume of the gas is 246 ml measured at 1.00 atm. calculate the number of grams of sodium used in the reaction (vapor pressure of water at 25 degrees celsius = 0.0313 atm).

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Chemistry

Mila Pennington

The definition that offers the broadest range of substances that can be considered acids is the:

- Arrhenius definition

- Brønsted-Lowry definition

- Lewis definition

- Arrhenius-Brønsted-Lowry definition

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Chemistry

Juliana

Determine the number of moles of oxygen in 3.20 moles of sodium hydrogen phosphate.

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Chemistry

Davian Barron

Phentyfloroform contains 57.54% C, 3.45% H, and 39.01% F. What is its empirical formula?

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