Which statement best describes the nobel gases?

A) they are highly reactive

B) they combine easily with other elements.

C) They have an outer shell that needs only 1 electron

D) they have a full outer electron shell.

Which compound has both ionic and covalent bonds? (1) CO2 (3) NaI (2) CH3OH (4) Na2CO3

An atom can be described as a-the smallest particle that has all the characteristics of a compound b-the smallest particle that has all the characteristics of an element c-a charged particle that is similar to a molecule d-a charged particle that is

Marcia has 2 liters of a 60% concentrated solution of phosphoric acid. She wants to add 3 liters of less concentrated phosphoric acid solutions, so that she has 5 liters of a solution with a concentration less than 50%.

Determine the Kelvin temperature required for 0.0470 mol of gas to fill a balloon to 1.20L under 0.988 atm pressure. a. 306K c. 308K b. 307K d. 320K

How do i give the number of significant figures in 0.0037 mm

Write the name of the following compound NH^3

Relate How do atoms relate to cells?

Rank the following compounds in terms of decreasing vapor pressure. Cl-CH2CH2OH CH3-O-CH3 CH3CH2OH CH3OH

A specific steroid has a λmax of 282 nm and a molar absorptivity ε of 11, 500 L mol - 1 cm - 1. What is the concentration of the compound in a solution whose absorbance at 282 nm is A = 0.060 with a sample pathlength of 1.00 cm?

The chemical formula for a covalently bonded group of atoms is called a