A testable explanation of or answer to a scientific question that is based on prior knowledge or research is a (n)

How many moles of compound are there in 15.0g of potassium dichromate, K2Cr2O7?

A handful of sand weights 208g and it displaces volume of 80ml of water. ehat is its density?

Select all of the following statements that are incorrect. (Multiple Choice) a. Solids, liquids, and gases are all able to act as solutes in a solution. b. Solids, liquids, and gases are all able to act as solvents in a solution. c.

Helium is an inert gas that does not react with other substances to form compounds. Would it be correct to say that helium has no chemical properties?

In this lab, you will observe the properties of oil, cornstarch, salt, and sodium bicarbonate. You will use the properties to classify the substances as ionic and covalent. *Restate this goal in the form of an investigative question.

A crane lifts a cargo box 10 m off the ground. If the crane lifts the cargo box twice as high, the potential energy will increase by

What is the main purpose of a particle accelerator?

Is this statement true or false? Bases feel slippery. A. True B. False

why blue intensity of copper (2) sulphate will decrease in a voltaic cell with zinc electrode in zinc sulphate solution and copper 2sulphate solution with copper electrode in it (with salt bridge)

What is the charge for MnO4