1 poir

14. Which of the following is NOT a requirement for a reaction to be

classified as combustion? (1pt) *

A. One of the reactants is 02

B. One of the products is CO2

C. One of the products is H20

D. One of the reactants is CO

A 2.5 L sample of gases at STP (standard temperature and pressure is 273 k and 1.00 atm). When the temperature is raised to 273degrees Celsius and the pressure remains constant the new volume of the gas will be?

Particles of matter are in motion in A. Gases only B. Solids, liquids, gas C. Liquid and gases

What type of decay characterizes the change of radioactive nuclides to their respective daughter products? disproportional exponential linear artificial

Suppose that you have a supply of a 40% solution of alcohol and a 60% solution of alcohol. how many quarts of each should be mixed to produce 100 quarts that is 50% alcohol?

Which of the following compounds will be most soluble in ethanol (CH3CH2OH) ? hexane (CH3CH2CH2CH2CH2CH3) ethylene glycol (HOCH2CH2OH) trimethylamine (N (CH3) 3) acetone (CH3COCH3) None of these compounds should be soluble in ethanol.

When an electron moves to another orbital farther from the nucleus, does it gain or lose energy?

A magnesium atom has 2 valence electrons in its third shell. Which is a TRUE statement about what happens when it forms an ion? A. It will be an anion. B. It will have more electrons than protons. C.

Which of the following types of coal has the highest energy content and produces the fewest polluting chemicals?

When nitrogen is removed from a sample of tha air in the process of nitrogen fixation, what happens to the patial pressure of nitrogen the sample?

How is density related to buoyancy