Determine the density of an object that has a mass of 149.8 g and displaces 12.1 ml of water when placed in a graduated cylinder.

You are given a compound with the formula mcl2, in which m is a metal. you are told that the metal ion has 26 electrons. what is the identity of the meta

High energy waves have long wavelengths and low frequencies. long wavelengths and high frequencies. short wavelengths and low frequencies. short wavelengths and high frequencies. u

3. Is the number of total molecules on the left side of a balanced equation always equal to the number of total molecules on the right side of the equation? Explain your answer.

What isotope has 14 protons and 14 neutrons?

En qué consiste una molécula

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?