Which of the following groups contain three elements with stable electron configurations?

A. helium, xenon, carbon

B. xenon, neon, boron

C. calcium, krypton, argon

D. argon, neon, xenon

Given the reaction: n2 (g) + 3h2 (g) 2nh3 (g) what is the mole-to-mole ratio between nitrogen gas and hydrogen gas? (1) 1:2 (3) 2:2 (2) 1:3 (4) 2:3

How The Distance Between two celestial Bodies Impacts Their gravitational attraction

How many grams nano3 add to 500g of h20 prepare solution. 5 molal nano3?

Convert 45.8g of CO2 to mol

A gas mixture consists of 320 mg of methane, 175 mg of argon, and 225 mg of neon. the partial pressure of neon at 300k is 8.87 kpa. calculate (i) the volume and (ii) the total pressure of the mixture.

It is easier to push a sofa across a rough surface like carpet than a smooth surface like a hardwood floor. True False

Which of the following is not equal to 0.536 kilometers? 53.6 hectometers (hm) 536 meters (m) 536,000 millimeters (mm) 53,600 centimeters (cm)

Which theory states that our inner planets are rocky because rocks and metals combine at extreme temperatures, while the outer planets are gaseous because hydrogen compounds condense at colder temperatures? Hubble Doppler Kepler Nebular

Most air pollution come from a) pollen b) forest fires c) volcanic eruptions d) burning fossil fuels

How many neutrons does a calcium 48 isotope have