If the atomic number of an element is 7 and its mass number is 18, how many neutrons are in the atom's nucleus?

Calculate the percent by volume of a solution that has 75 mL of solute dissolved in 375 mL of solution. Show your work and round your answer to the nearest whole percent.

What is the pattern or arrangement in your store's aisles?

What shows how much potential energy is in the water stored in hoover dam?

What is the approximate vapor pressure when the liquid water boils at about 50°C? 230 mmHg 5 mmHg 760 mmHg 380 mmHg

In the past all living things were classified as

What compares a law and a theory?

Explain what domain would best be represented by the "?" in the diagram. A) Eukarya because the organisms are all eukaryotic. B) Eukarya because the organisms are all prokaryotic. C) Bacteria because some of the organisms are autotrophs.

If you are eating a hamburger, it is an example of a consumer eating another consumer. a) true b) false

What mass of NaNO3 is needed to make 3.5 L of 2.2 M solution? (Na = 23.0g, N=14.0g, O=16.0g) Explain in steps

In which group do all atoms have seven valence electrons in the ground state?