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Chemistry

Kaylin Walker

Explain how the effects of nuclear charge and the increasing number of core electrons in an atom oppose each other.

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Chemistry

Charlee

What is the mole ratio of oxygen to pentane?

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Chemistry

Rodrigo Nunez

What does the nucleus of a cell do

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Chemistry

Larsen

A 100.0 mL sample of 1.020 M HCl is mixed with a 50.0 mL sample of 2.040 M NaOH in a Styrofoam cup. If both solutions were initially at 24.53°C, and the enthalpy of the neutralization reaction is - 57 kJ/mole of H2O formed, what is the final temperature of the mixture? Assume that the solution has a density of 1.00 g/mL and a specific heat of 4.184 J/g°C, and that the Styrofoam cup has an insignificant heat capacity.

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Chemistry

Reid Spears

During fusion, the hydrogen in the Sun is?

a. entirely converted to energy.

b. entirely converted to helium.

c. partially converted to energy.

d. partially converted to deuterons.

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Chemistry

Chandler Copeland

The nucleus of a radium-226 atom is unstable, which causes the nucleus to spontaneously

(1) absorb electrons (3) decay

(2) absorb protons (4) oxidize

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Chemistry

Trystan Parks

What is the molality of glycerol solution with density og 1.120g/ml and mass percentage of 48%?

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Chemistry

Keon Glenn

Inside an atom, which of these occupies the maximum volume? a) the electrons b) the protons c) the neutrons d) empty space (vacuum)

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Chemistry

Alexandria Harmon

A 0.7500 L solution has been boiled down to a new volume of 0.4510 L with a concentration of 2.033 M. What was the initial concentration of the solution?

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Chemistry

Amirah Miranda

What is number 16 on the periodic table

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Chemistry

Uriah

What is the strongest intermolecular force

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Chemistry

Mariana Haney

If a sample of hydrochloric acid is neutralized with sodium hydroxide, what products are formed?

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Chemistry

Angeline Camacho

Prior to the development of DNA fingerprinting, blood type could be used to determine possible parentage. Although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. Which of the following is a true statement that can be made about parentage based on blood typing?

A. a parent with o blood type could never have a child with A blood type

b. a parent with type O blood could never have a child with type B blood

C. a parent with type A B blood never have a child with type B blood

D. a parent with type A B blood can ever have a child child with type O blood.

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Chemistry

Deegan Pena

At room temperature, which of the following is the most compressible?

A. One liter of oxygen, a gas

B. One liter of water, a liquid

C. One liter of mercury, a liquid

D. One liter of iron, a solid

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Chemistry

Litzy Mcmahon

A spring scale is best defined as

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