For which of the following elements is the number of neutrons correctly represented, based on the atomic number and mass number given?

When calcium hydroxide reacts with sulphuric acid in the lake a calcium salt is formed what is the name of this salt

All living things perform synthesis reactions which are necessary for life. some of this includes breaking down what?

What is transportation?

Chemical reactions - a. produce new substances. b. create and destroy atoms. c. occur only in living organisms. d. only occur outside living organisms.

The chemical process in which electrons are gained by an atom or ion is called

Boron has an average mass of 10.81. One isotope of boron has a mass of 10.012938 and a relative abundance of 19.80 percent. The other isotope has a relative abundance of 80.20 percent. What is the mass of the two isotopes?

What type of radiation is most likely to damage DNA? A. ionizing B. non-ionizing

Water vapor cools and comes together to form a cloud. This is an example of what change in state? condensation evaporation melting

Which group of the periodic table does this element most likely belong to

What is the ph of a 7.5*10^-3 m H + solution