Sally has collected a sample of dirt from a riverbank and wants to analyze it. Sally wants a magnified view of the dirt to try and see what it is made of. Which piece of equipment should she use?

Express 602 * 10 ^21 in standard scientific notation

What is the molarity of a nano3 solution if 25.0 ml of a 0.200 m nano3 solution is diluted?

A sample of which radioisotope emits particles having the greatest mass?1) Cs-1372) Fe-533) Fr-2204) H-3

How much energy is released during the formation of 1 mol H2O (g) ?

Which statement describes a chemical reaction? Reactants form products when atoms change state. Products form reactants when atoms change state. Reactants form products when atoms are rearranged. Products form reactants when atoms are rearranged.

The heart is an example of which level of organization within an organism? O cell organ tissue organ system O O

NaOH+HCl--> NaCl+H2O what is the total number of grams of H2O produced when 116 grams of the product, NaCl, is formed?

Is a sample of liquid nitrogen more dense than a sample of nitrogen gas

You have a balloon containing 1 L of air at STP in a vacuum chamber. What will the volume of the balloon be when you reduce the pressure by half and increase the temperature to 373 K?

Which method will correctly determine whether the forces on an object are balanced or unbalanced? A. Multiply the forces in the horizontal direction by the forces in the vertical direction. B.