A beaker contains 450 g of water if 9.2g of calcium fluoride is added what is the molality concentration of the solution

What is the definition of a physical property of matter?

How many atoms are there in 5.699 g of cobalt, Co? Express your answer with the appropriate significant figures and unit.

Element X is metallic and element Y is nonmetallic. What bond will X and Y form? a Metallic b Nonmetallic c lonic d Nonpolar e Covalent

The equilibrium expression for a reaction is Keq=[H+]6[Bi2+]2[H2S]3. Which of the following could be the reaction? A. 6H + (aq) + BiS (s) 2Bi2 + (aq) + 3H2S (g) B. 2Bi2 + (aq) + 3H2S (aq) Bi2S3 (s) + 6H + (aq) C.

When cations and anions join, they form what kind of chemical bond?

Magnetism easily separates what mixture? A). Sand and glass B). Sand and iron C). Sand and clay D). Sand and aluminum

Match the science with the best description?

Can magnetism be used to identify a substance

Nitrogen dioxide dimerizes to give dinitrogen tetroxide: 2NO2 (g) → N2O4 (g). At 298 K, 12.55 g of an NO2/N2O4 mixture exerts a pressure of 0.963 atm in a volume of 6.92 L. What are the mole fractions of the two gases in the mixture?

What is the concentration of a solution, in gsolute/100gsolvent, made using 2.83 g of KNO3 in 2.03 g of H2O? Do not include units in your answer.