The reaction times for three trials of an experiment are 80.3, 80.2, and 80.5 seconds. Which average time is expressed using the correct number of significant figures?

A. 80.3

B. 80.33

C. 80

D. 80.333

What is the mass number of an ion with 106 electrons, 158 neutrons, and a + 1 charge?

What equation correctly relates kinetic energy, mass, and velocity

Convert 11 degrees ° Fahrenheit to Celsius. (Round to the nearest tenth.)

Which element can form more then one binary compound with chlorine

1 mg is equal to 10-3 hg. 103 dg. 10-3 g. 10-2g.

Assuming the octet rule is obeyed, how many bonds and how many lone pairs will atoms of oxygen (o) and nitrogen (n) have in order to have formal charges of + 1?

The ksp of cobalt (ii) carbonate, coco3, is 1.0 * 10-10. calculate the solubility of this compound in g/l.

If crown b is more dense than crown a then which is pure gold

In an ecosystem, a population can be defined as A. all the individuals of a species that exist together at a given place and time. B. all individuals of a species born in a specified month in every region of the world. C.

How many grams of NH3 are needed to provide the same number of molecules as in 0.55 grams of SF6?