Are polyatomic ions molecular compounds or ionic compounds?

At 40°C, how much KNO3 is soluble?

What is the approximate mass of one mole of zinc? a. 30 g b. 35 g c. 65 g d. 6.02 * 1023 g

If a lake became too acidic, which of the following describes the best way that scientists could determine how to make the lake more neutral? A. Dump a large quantity of a base, such as sodium hydroxide, into the lake. B.

Telescopes are examples of concave mirrors. true or false?

Monel metal is a corrosion-resistant copper-nickel alloy used in the electronics industry. A particular alloy with a density of 8.80 g/cm3 and containing 0.090 % Si by mass is used to make a rectangular plate that is 15.0 cm long, 12.

Why could the Bohr model not predict line spectra for atoms other than hydrogen?

Cryolite, Na3AlF6 (s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. Balance the equation. 1.) Balance the equation - AlO3 (s) + NaOH (l) + HF (g) - ->Na3AlF6+H2O (g) 2.) If 17.5 kilograms of Al2O3 (s), 51.

The volume, in liters, of 538 g of CO2

What are two types of cold air masses that influence the weather in North America? Name them and describe their humidity.

Initial Volume (VI) Final Volume (Vf) = Object's volume =