What mass of naoh (40.0 g/mol) is needed to prepare 250 ml of 2 m naoh solution?

How are bacteria cells different from human cells? A. Bacteria cells do not contain a cytoplasm. B. Bacteria cells do not contain genetic material. C. Bacteria cells are much bigger than human cells. D.

When an atom is chemically stable how many electrons are in its outer energy later?

He best ultraviolet observations are made with space telescopes because A. the Sun blocks most ultraviolet light from distant stars. B. the Earth's gravity reflects most ultraviolet light from distant stars. C.

A blood sample is diluted by placing 0.2ml of the blood in a tube and filling the tube to the 5ml mark with a solution. what percent of the solution represents whole blood?

Read the list of elements given below. Be, Mg, Ca, Sr Which of the following about the elements is true? All of them are unreactive metalloids. All of them are hard and dense metals.

14. What steps should you take to keep parents and the public from viewing your personal information on social networks?

Match the factors which affect the rate of dissolving/dissociation/diffusion.

How would the equilibrium of an exothermic reaction at 25°c be affected if the temperature of the system were reduced? (hint: apply le chatelier's principle) ?

Which is the most practical argument for the continued funding of space exploration? a) Space exploration will one day show whether life exists on other planets in star systems similar to ours.

33 protons 36 electrons 45 neutrons