In an experiment plants are fed once daily for one week. There are four plants the first is given oil, the second one vinegar, third one water and fourth one sugar. What is the manipulated variable?

What is the definition of half-life?

Copper is composed of two naturally occurring isotopes: Cu-63 (69.170%) and Cu-65. The ratio of the masses of the two isotopes is 1.0318. What is the mass of Cu-63?

A 40.8 mol sample of methane gas, CH4 (g), is placed in a 1020 L container at 298 K. What is the pressure, in atm, of the methane gas? Express the answer using 3 significant figures. atm

Choose the product. - 7p3 (4p2 + 3p - 1) - 28p5 - 21p4 + 7p3 28p6 + 21p3 - 7p 21p3 + 8p2 + 3p4 - 8p - 21p5 + 8p4 - 3p3

What force pulled the solar system together

Chemical reactions that release energy possess reactants with lower energy than their products. True or False Heat is the most common form of energy absorbed or released in chemical reactions. True or False

What is the reason for the low solubility of LiF (0.27 g per100 ml H2O) compared to CsF (367 g per 100 ml H2O) ?

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? A.) increasing temperature B.) increasing pressure C.) decreasing surface area D.) decreasing temperature

In June there are fewer hours of daylight and less direct sunlight in the

What are two type of minerals?