How many moles of calcium (Ca) atoms are there in 77.4 g of Ca?

Brainlest glucose molecules are monomers for which of the following biochemicals

A member of the boron family has three valence electrons, while a member of the carbon family has a. none. b. five. c. four. d. three.

The gases in air dissolve in water. What would be one way to reduce the amount of a gas dissolved in water? A. add more water B. reduce the air pressure C. increase the air pressure D. stir the water

Discuss the environmental impacts or gas fracking.

Draw the Lewis structure of H2O. Include any nonbonding electron pairs. Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons.

Which of the following is not true of science? 1. Science offers proof of a claim 2. Science is a way of knowing 3. Science is a process 4. Science provides support or fails to provide support to claim

What happens to the velocity of a sound wave in air if the temperature of the air increases

Determine the [oh-] concentration of a 0.741 m koh solution at 25°c.

In the lab, students decomposed a sample of calcium carbonate by heating it over a Bunsen burner and collected carbon dioxide according to the following equation: CaCO3 (s) CaO (s) CO2 (g) (a) How many mL of carbon dioxide gas were generated by the

J. J. Thomson A) Electrons are in orbital levels. John Dalton B) Atoms are the smallest unit of an element. Ernest Rutherford C) Electrons are scattered within the atom. Niels Bohr D) Protons are at the center of an atom.