According to Table N, which radioactive isotope is best for determiningthe actual age of Earth? (1) 238 U (3) 60 Co (2) 90 Sr (4) 14 C

Calculate the number of moles of aluminum, sulfur, and oxygen atoms in 4.00 moles of aluminum sulfate, al2 (so4) 3. express the number of moles of al, s, and o atoms numerically, separated by commas.

When Clayton lights a firework, it's potential energy is converted to all but what form A.) Mass B.) light C.) heat D.) Sound which one?

Which of the following methods can be used to remove water from a mixture of sand and water? Centrifuge Filtration Floatation Magnetism

A solution of koh required 31.3 ml of 0.118 m hcl to reach neutralization. what mass of koh was in the titrated sample?

How are the groups titled in the periodic table?

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.