A student is testing water to know which is best for cleansing purposes with soaps. He would find that the cleansing action of soaps is best when he uses water obtained from

A. Rain

B. Tap

C. Hand pump

D. Pond

Consider the following equilibrium between N2O4 and NO2.[Heat is added to a brown 2 NO2 gas to yield a colorless N2O4 gas]Which condition would cause the reaction to become darker brown? a. Low temperatureb. High pressurec. Small volumed.

When methane gas, CH4, is burned in the presence of oxygen, CO2 and H2O are formed and heat energy is given off. Explain where this heat energy comes from.

The equilibrium constant for this system is 8.5 x 10-3. If the equilibrium concentration of NH3 is 9.2 x 10-2 M, what is the equilibrium concentration of H2S? o 9.2 x 10-2 M. o 78 10-4 M o 1.0 M 1.1 x 101M

A sequence of thermonuclear fusion processes inside massive stars can continue to transform the nuclei of elements such as carbon, oxygen, and so forth, into heavier nuclei AND also generate excess energy, up to a limit beyond which no further

Remembering that SN2 reactions go with 100 % inversion of configuration, while SN1 reactions lead to racemization, explain why the reaction of (Z

The smallest unit of an element is a blank

How many sodium atoms will create an ionic bond with sulfur?

Rank the elements from smallest to largest electronegativity negativity (smallest at top) 1. N 2. P 3. As 4. Sb

A bicyclist pedaling up a Hill. What type of energy potential or kinetic?

What improvements have been made in modern farming? Select all that apply. 1. machines can do more work over less time 2. better seeds sprout and grow much more quickly 3. trains can transport food over long distances faster 4.