The equation 2NaNO3 + CaCl2→2NaCl+Ca (NO3) 2 is balanced.

How many atoms of oxygen (O) are there on either side of the equation?

six

one

four

two

answer is 6

You place a balloon in a closed chamber at standard temperature and pressure (STP). You double the chamber temperature while leaving the pressure constant. What happens to the balloon?

What information could you use to determine the atomic number of an unknown element that has a mass number of 22? O A. number of ions B. number of isotopes C. number of neutrons O D. number of electrons

1. Summarize How did the work of scientists who studied fossils support the theory of evolution?

I don't get it how the question says select all that apply and only give us one answer don't you think its common sense that there is more than one answer?

Which notation represents the largest atomic radius? Cl F F- Cl-

During fusion, the hydrogen in the Sun is? a. entirely converted to energy. b. entirely converted to helium. c. partially converted to energy. d. partially converted to deuterons.

The nucleus of a radium-226 atom is unstable, which causes the nucleus to spontaneously (1) absorb electrons (3) decay (2) absorb protons (4) oxidize

What is the molality of glycerol solution with density og 1.120g/ml and mass percentage of 48%?

Inside an atom, which of these occupies the maximum volume? a) the electrons b) the protons c) the neutrons d) empty space (vacuum)

A 0.7500 L solution has been boiled down to a new volume of 0.4510 L with a concentration of 2.033 M. What was the initial concentration of the solution?