The atomic mass of hydrogen-1 is 1.008 and the atomic mass of helium-4 is 4.003. Find the difference in grams between 4 moles of hydrogen and one mole of helium.

Why don't people eat things with very high cellulose

The element lead (Pb) consists of four naturally occurring isotopes with atomic masses 203.97302,205.97444,206.97587, and 207.97663 amu. The relative abundances of these four isotopes are 1.4,24.1,22.1, and 52.4 %, respectively.

What element's outer shell is not full, is commonly found in air, and can give, take, or share as many as 4 electrons with other elements?

A solution is made by dissolving 22.1 g of lithium fluoride (LiF) in 188 g of water. What is the molality of the solution?

Why is chemistry important?

If a solute in water has a concentration of 0.12 mg/mL and has a concentration in ether of 0.60 mg/mL, what is the distribution coefficient, K, between ether and water

Drag each title to the correct location identify each process as carbon source or carbon sink

Identify the period and group numbers of the element with the electron configuration. [Ne]3s23p4

The process of a material going through a change of state from a gas to a liquid is called

Which two chemical substances are needed to begin the photosynthesis factory process?