Which of the following is considered a hypothesis as opposed to an observation

What has cells that are dried out?

What are the elements with atomic numbers from 58 to 71 in the periodic table called?

The pKa for a weak acid to be used in the buffer should be as close as possible to the desired pH. What if the pKa is not close to the desired pH? What is the problem with choosing such a weak acid used in the buffer?

Which state of matter has atomic spacing that is close together and indefinite shape? which state of matter has atomic spacing that is close together and indefinite shape? liquid solid gas plasma none of the above?

How are atoms arranged in a network solid such as diamond

Which is measured using a calorimeter

5) Solid lithium metal is added to an aqueous solution of magnesium chloride forming lithium chloride solution and solid magnesium a. If you begin the reaction with 15.0 g of lithium and 25.

Which element easily loses one electron to form a positive ion? A. Magnesium (Mg) B. Lithium (Li) C. Nitrogen (N) D. Fluorine (F)

What is an indication a chemical reaction has occurred? A.) Formation of gas B.) Boiling of a substance C.) Melting of a substance D.) Freezing of a substance

A saline solution contains 1.6 % NaCl by mass. How much NaCl is present in 57.2 g of this solution?