Chemistry » Page 7

Chemistry

What phase of matter has particles that are held together but can flow past each other and takes the shape of a container, filling it from the bottom up?

Gas

Liquid

Plasma

Solid

Answer Answers (2)

Chemistry

How does 0.5 m sucrose (molecular mass 342) solution compare to 0.5 m glucose (molecular mass 180) solution?

Answer Answers (1)

Willow Mcknight

Chemistry

Which particles make up the nucleus of an atom?

protons and electrons

neutrons and electrons

protons only

protons and neutrons

neutrons only

Answer Answers (1)

Chemistry

2H2+O2 2H2O. Calculate the moles of water formed when 14 moles of hydrogen react.

Answer Answers (1)

Chemistry

What is the balanced formula for S8 + O2 - > SO3

Answer Answers (1)

Chemistry

What is the effect of the biogeochemical cycles?

O

O

O

O

cycling energy through a food chain

recycling matter through the biosphere

recycling rocks through the layers of Earth

cycling nutrients through the human body

Answer Answers (1)

Chemistry

Calculate the ratio of effusion rates of oxygen (o2) to hydrogen (h2)

Answer Answers (1)

Chemistry

4. You are studying the behavior of a perfluorocarbon-based O2 carrier as an emergency treatment for hypoxemia. It has an approximate molecular radius of 2 nm. Consider ultrafiltration through the kidney (glomerular membrane pore radius 4 nm, length 800 nm). Assuming a therapeutic dose in the blood of 22 mM and 2 mM in the filtrate, determine the electrochemical potential across glomerular membrane.

Answer Answers (1)

Charlie English

Chemistry

Of the four methods of heat transfer: conduction, advection, convection, and radiation, which one is considered the most important method of heat transfer?

Answer Answers (1)

Emmalee Daniels

Chemistry

Which of the following is true of the water molecule?

A. It has a linear shape and is polar

B. It has a bent shape and is polar

C. It has a linear shape and is not polar

D. It has a bent shape and is not polar

Answer Answers (1)

Chemistry

Calculate the number of repetitions of the β-oxidation pathway required to fully convert a 18-carbon activated fatty acid to acetyl-scoa molecules.

Answer Answers (1)

Chemistry

Which of the following is the least reliable source of background information for a scientific project?

A) general Internet site

B) government Internet site

C) library reserve section

D) scientific journal

Answer Answers (1)

Chemistry

How is an average mass different from a weighted mass

Answer Answers (1)

Chemistry

Jared sprayed a pesticide on his garden three times. The first time, many insects died. The second time fewer insects died. The last time very few insects died. What impact did the insecticide have on the species of insects? A. All of the insects were resistant to the insecticide. B. The species became less resistant to the insecticide. C. The species became more resistant to the insecticide. D. None of the insects were resistant to the insecticide.

Answer Answers (2)

Chemistry

Which life characteristic describes a long-term response to the environment? development adaptation reproduction using energy

Answer Answers (1)