2. At STP, a sample of gas occupies 24.5 mL. Calculate the volume of this gas at a

pressure of 2.3 atm and a temperature of 301 K.

Which of the following is a mixture? a - milk b - salt c - crude petroleum d - sea water

What is the total number of atoms in 80 grams of neon?

Mixing 25.0 ml of 1.2 m hclo4 and 25.0 ml of 1.1 m naoh were mixed. the temperature of the initial solution was 22.4 o c. assuming a heat of neutralization of 55.

Grade In a chemical reaction, sulfuric acid and aluminium metal react to form hydrogen gas and a salt solution of aluminium sulfate.

How many valence electrons does K + have

Lithium and nitrogen react in a combination reaction to produce lithium nitride: 6Li (s) + N2 (g) → 2Li3N (s) How many moles of lithium are needed to produce 0.60 mol of Li3N when the reaction is carried out in the presence of excess nitrogen?

7. Convert 5.2 cm of magnesium (Mg) ribbon to mm of Mg ribbon.

If you place a crystal substance on a tabletop, return to view it after some time passes, and find it as a powdered substance, which of the following processes most likely took effect? A. Efflorescence B. Distillation

What changes occur in the nuclei of atoms involved in the reactions that fuel nuclear power plants?

Calculate the molar mass for HCN. 0.2703 g/mol 2.703 g/mol 27.03 g/mol 270.3 g/mol