Which describes a source of radiation heat?

O

A. The sun sending out electromagnetic waves

O

B. Two molecules colliding with each other

O

c. Objects having kinetic energy because of their motion

O

d. Liquid or gas oirculating to move the heat

Which of these products is made from an animal product? A. A sisal rug B. A silk shirt C. A linen jacket D. Cotton jeans

A 3.00-l flask is filled with gaseous ammonia, nh3. the gas pressure measured at 15.0 ∘c is 2.15 atm. assuming ideal gas behavior, how many grams of ammonia are in the flask?

Since esters are cleaved on hydrolysis, the molecular weight of the acid derived from an ester is always lower than the molecules weight of the ester. however, esters are equally liquids while carboxylic acids are usually solids.

Is krypton ionic or covalence

What is the opposite of malleable? A) brittle B) ductile C) insulative D) conductive

Which statement about scientific explanations is true? A. Scientific explanations are open to change. B. Scientific explanations are never reliable. C. Scientific explanations are always correct. D. Scientific explanations are rarely proven wrong.

Which of the following might a chemist choose to study? A. Glacier movement in Alaska B. Better ways to recycle plastics C. The effects of hurricanes on turtle populations D. The vibrations in bridges caused by big trucks

How many electrons would the element calcium need to be electrically neutral?

How to convert metric units?

President Nixon promised over $3 billion in economic aid to North Vietnam after the war. a. true b. false