Chemistry » Page 17

Chemistry

What is the approximate percent efficiency of nuclear power?

a. 92%

b. 100%

c. 25%

d. 8%

Answer Answers (1)

Chemistry

How much time does it take a person to walk 12 km north at a velocity of 6.5 km/h

Answer Answers (1)

Chemistry

Which of the following best explains diffusion? Which of the following best explains diffusion? a. movement of molecules from an area of high concentration to an area of low concentration b. movement of molecules farther away from equilibrium c. movement of molecules from where there are fewer of them to where there are more d. exchange of nonpolar molecules for polar molecules

Answer Answers (1)

Chemistry

Completion of the human genome map is it before or during

Answer Answers (1)

Chemistry

The aerobic system of energy production uses glycogen primarily uses what as its energy source?

Answer Answers (1)

Chemistry

What is a solution?

A. a solid dissolved in a gas

B. a solute and a solvent

C. a liquid dissolved in a gas

D. an amalgam of solids, liquids, and gases

Answer Answers (2)

Chemistry

How many moles are in 213 grams of NaCl?

Answer Answers (1)

Jamarion Shields

Chemistry

Compound made up of only xenon and fluorine contains 22.44% fluorine by weight. what is the molecular geometry of this compound?

Answer Answers (1)

Chemistry

Which ions are spectator ions in the formation of a precipitate of agcl via combining aqueous solutions of cocl2 and agno3?

Answer Answers (1)

Chemistry

Marissa is learning about the unique properties of waves. She has learned that whenever the wavelength of a wave increases, the frequency of the wave decreases. When does the speed of a wave change?

Group of answer choices

when a wave is reflected off a surface

when the wave encounters a new medium

when the amplitude of the wave changes

when the mass of the wave changes

Answer Answers (1)

Deangelo Stevenson

Chemistry

Which answer choice best explains why uranium-238 can be used in power plants to generate electricity?

A) Nuclides of uranium-238 decay over time. They release large amounts of energy as their nuclei break apart.

B) Nuclides of uranium-238 are extremely stable. They can absorb large amounts of energy without breaking apart, so they rarely need to be replaced

C) Because atoms of uranium-238 have many more electrons than protons, they release steady streams of electric current.

D) Because atoms of uranium-238 have many more protons than neutrons, they attract large numbers of electrons from the surrounding environment

Answer Answers (1)

Chemistry

Explain how you can use physical properties to compare substances.

Answer Answers (1)

Chemistry

How is this model useful?

Answer Answers (1)

Chemistry

What is the frequency of a wave?

A. The amount of time that one full cycle takes

B. The distance traveled by the wave during one full cycle

C. The amount of cycles that occur in a given time

D. The distance from the beginning to the end of a cycle

Answer Answers (1)

Chemistry

How many of the elements in the second row of the periodic table (li through ne) will have at least one unpaired electron in their electron configurations?

Answer Answers (1)