How can an atom's mass number be determined?

Copper wiring has been the standard used for communications systems since before the invention of the telephone in 1876. True or false?

Which resistors in the circuit are connected in series to the power source? OA. A and B O B. C and D O O C. A and D O D. B and

Atoms have no electric charge because they a. have an equal number of charged and noncharged particles. b. have neutrons in their nuclei. c. have an equal number of electrons and protons. d. have an equal number of neutrons and protons.

2.2: Describe how and when cleaning agents are used.

What are the chemical reactions of a burning candle?

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda