What is the approximate pka of a weak acid ha if a solution 0.1 m ha and 0.3 m a - has a ph of 6.5?

How many moles of KNO3 are in 500 mL of 2.0 M KNO3? ___ mol KNO3

What is the form of water in the earth's surface

Aluminum has a density of 2.70 g/ml what is the volume of an aluminum block that has a mass of 55.67 kg

What is the formula of a binary compound? A. KOH B. Al2S3 C. NaClO3 D. Bi (NO3) 3

What happens to an atom in a liquid as it freezes?

Which type of substance can conduct electricity in the liquid phase but not in the solid phase? metallic element molecular compound nonmetallic element ionic compound

Differentiate between the significance of the coefficients in a balanced chemical equation

Why are nonnative species a threat to biodiversity? Why are nonnative species a threat to biodiversity? A. They often use up resources that other organisms need. B. They are not able to successfully breed in the wild. C.

What is the pressure inside a tank when it contains 87.3 moles of Helium if it holds 52.0 miles at 9.63 atm

Which statement describe how the bond between two oxygen bond atoms is formed?