What did chemists find out about the properties of elements?

The table below gives the data that is needed to calculate the average atomic mass of element B. Isotope Atomic mass (amu) Relative abundance (%) B-10 10.01 19.91 B-11 11.01 80.09 Based on these data, what is the average atomic mass of element B? 10.

Use the problem below to answer the question: How many grams of H2 would be formed if 34 grams of carbon reacted with an unlimited amount of H2O? The reaction is: C + H2O → CO + H2 The equation is balanced. The starting substance is carbon, C.

In a compound, chemical energy is contained in the a. nuclei of the atoms. b. unbonded electrons. c. bonds. d. movement of the electrons.

How many grams of glucose are produced from 10.3 g of CO2

Which of the following alkenes reacts fastest with HBr

Which of the following contains the smallest amount of matter

Which best describes the relationship between solute, solvent and solution? 1. A solution and solute combine to form a solvent 2. A solute is dissolved in a solvent to form a solution 3. A solvent is dissolved in a solute to form a solution 4.

A watermelon weighing 10 newtons is lifted 2 meters. How much work is done?

If an atom donates or accepts an electron, what is it considered

In this experiment, you will measure mass and volume of various sport balls, both regularly shaped ball and irregularly shaped.