The rounded atomic mass of helium

Which of the electron transitions involves the most energy?

When atoms are bonded together are they stable or unstable?

How were the Great Lakes formed? Question 4 options: The Great Lakes were formed by a huge flood that took place 200 years ago. The Great Lakes were formed by a retreating glacier that dug out large basins.

Which of these elements is the best conductor of electricity? (1) S (3) Br (2) N (4) Ni

What is the mass number of the atom that has 29 protons and 35 neutrons?

What differences did you notice in the different states of water

1. Bubbling or fizzing is an indicator of a. property change b. phase change c. physical change d. chemical change

In the second step of this reaction, isocyanic acid reacts to form melamine and carbon dioxide: HNCO (l) →C3N3 (NH2) 3 (l) + CO2 (g) Balance this reaction and enter the coefficients below.

If the Kelvin temperature of a gas is tripled and the volume if doubled, the new pressure will be ___. A. 3/2 the original pressure B. 1/6 the original pressure C. 5 times the original pressure D. 2/3 the original pressure the answer isnt b or c

To squeeze gas into a smaller space