Express the sum of 2222 km and 333 km using the correct number of significant digits.

a. 2500 km

b. 2550 km

c. 2550. km

d. 2555 km

What is 72.4 grams of neon in moles?

How are science and technology related? Science is the application of technological knowledge. Science is a branch of technology. Technology is the application of the knowledge gained by science.

Which carbon skeleton represents a ketone? c-c-c-c=0 C-C-C-C-0 C-C-C-C-o C-C-0-C

Refer back to equation (2), and consider carefully whether you could simply have used the pH value of the solution at the very beginning of the titration, before any base had been added, to determine either or both the molar mass and the Ka value.

A cosmetologist has an ethical duty to do which of the following?

In an oxidation-reduction reaction, what happens to the electrons in the reduction process? A. Electrons are bonded. B. Electrons are gained. OC. Electrons are lost. D. Electrons are replaced.

Describe the energy in nuclear fuel and the way in which it's converted to electrical energy.

What is the concentration of O2 (g), in parts per million, in a solution that contains 0.008 gram of O2 (g) dissolved in 1000. grams of H2O (l) ?

Give the mass percent of carbon in C14H19NO2?

Blank is the theory that explains how large pieces of earths outermost layer move and change shape