A gas has a volume of 27.5 L at 302 K and 1.40 atm. How many moles are in the sample of gas?

A. 0.0401 mol

B. 0.645 mol

C. 1.55 mol

D. 2.14 mol

Which hybrid orbitals would be formed if one s orbital and three p orbitals combined?

What is an ion formed from two or more atoms called

An ideal gas is allowed to expand from 5.40 L to 35.1 L at constant temperature. By what factor does the volume increase? Will the pressure increase or decrease by that same factor? If the initial pressure was 143 atm, what is the final pressure?

An animal dies in its underground burrow

How much heat is required to raise the temperature of 670g of water from 25.7"C to 66,0°C? The specific heat of H, 0 is 4.1841/gC)

Energy is required to produce a chemical change during (1) chromatography (2) electrolysis (3) boiling (4) melting

What is the definition of colorie

How does a solid differ from a liquid? b. how does a liquid differ from a gas? c. how is a liquid similar to a gas? d. what is a plasma?

Which pair of elements will form an ionic bond? N and O K and Br C and Cl Fe and Ni

What does mass is conserved in a chemical reaction mean