Convert the mass of a molecular substance to moles.

28 grams of FeCl2 is equal to (blank) moles.

2.3 moles of Al (NO3) 3 is equal to (blank) grams.

A gas is initially at a pressure of 225 kPa and a temperature of 245 K in a container that is 4.5 L. If the gas is compressed to a volume of 2.1 L and the temperature changes to 275 K, what is the new pressure?

Rewrite this to make it true: Plants use energy to carry out cellular respiration.

What is the ph of a solution that is 0.34 m in sodium acetate and 0.61 m in acetic acid?

What is the formula for tin (ll) chromate

What are possible blood types (neglect positive and negative)

How does chemical energy relate to the atom and how can we use it?

If the EMF produced in a wire is 0.88 volts and the wire moves perpendicular to a magnetic field of strength 0.075 newtons/amp·meter at a speed of 4.20 meters/second, what is the length of the wire in the magnetic field? a. 0.27 meters b. 2.

How quickly or slowly a substance heats or cools is measured by its

What is the total number of valence electrons in a germanium atom in the ground state? (1) 22 (3) 32 (2) 2 (4) 4

If a patient/'s blood pressure is 145 over 85 mmHg, what is it in atmospheres (atm) ?