What is the pressure of a 1.0 L flask containing 0.60 g of He at 25°C? (R=0.0821 L atm/mol K)

Why is nh3 classified as a polar molecule

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.