The most active of all the chemical elements is a halogen known as

A. iodine.

B. fluorine.

C. astatine.

D. bromine.

A bottle contains 475 ml of insulin at a concentration of 20.0 mg/ml. what is the total mass of insulin in the bottle?

Which statement is best supported by the table? Waves W and Y are transverse waves, Wave X could be a longitudinal or transverse wave, and Wave Z is a longitudinal wave.

A molecule made of a nitrogen base, sugar, and a phosphate

4 outer planets in order

What is the quantum mechanical model

A sample of bismuth weighing 0.687 g was converted to bismuth chloride by reacting it first with HNO3, and then with HCI, followed by careful evaporation to dryness. The mass of the bismuth chloride obtained was 1.032 g.

When 1 g of sodium chloride (NaCl) is placed in 100 g of water, a solution results. Once the solution is prepared, water is now considered what part of the solution?

1. How is pressure affected as depth increases? 2. As the sun heats the surface of the oceans, two layers of water result. What separates the layers? 3. How is temperature affected when? (a) the depth increases (b) the latitude increases 4.

Are nails in a jar with water a chemical change

What is the molarity of a solution composed of 4.73 g of potassium iodide (KI) dissolved in enough water to make 0.169 L of solution? Answer in units of M.