How many Significant Figures are in 45.000?

Give two examples of an ionic compound

Moving left to right across a row of the periodic table, which of the following values increases by exactly one from element to element? a. isotope number b. atomic number c. atomic mass unit d. mass number

Arrange the following foods in order of increasing acidity : beets. PH=5.9; Camembert cheese, PH=7.4; egg white, pH=8.0; sauerkraut, PH=3.5; yogurt, PH=4.5

The osmotic pressure of a solution containing 5.87 mg of an unkonw protein per 10 ml of solution is 2.45 torr at 25 degree clesius. Find the molar mass of the unknown protein. 1 atm

Which usually has a higher temperature? A city or the areas around the city?

Which term is used to describe the attraction that an oxygen atom has for the electrons in a chemical bond?

Suppose you wanted to dissolve 109 g of sodium carbonate in enough water to make 6.00 L of solution. What is the molarity of this solution?

0.0055 in scientific notation

Mineral oil dissolves in hexane but not in ethanol

Which compound becomes less soluble in water as the temperature of the solution is increased