Which symbol correctly represents an element (D) whose atoms contain 15 protons and 20 neutrons?

2,000 mL is equal to: c? 0.2 L 2 L 20 L 200 L

Ascorbic acid, or vitamin c (c6h8o6, molar mass = 176 g/mol), is a naturally occurring organic compound with antioxidant properties. a healthy adult's daily requirement of vitamin c is 70-90 mg. a sweet lime contains 2.86*10-4 mol of ascorbic acid.

B loves a a ignores b a loves c c ignores a c loves d d is stupid

Which of the following describes the electron sharing between two oxygen atoms? a. each oxygen shares six electrons with the other b. each oxygen shares two electrons with the other. c. each oxygen shares eight electrons with the other. d.

Which change will speed up a reaction? decreasing the concentration of a product decreasing the temperature increasing the concentration of the reactant decreasing the concentration the reactant

Which change might cause a cold spell in the northern united states

Kipps appratus is for what?

Which of the following statements about protons are true? Protons have twice the mass of neutrons. Protons have the same magnitude of charge as electrons but are opposite in sign. Protons have a charge of 1+.

What is true of an acidic solution at room temperature?

Why does a higher concentration make a reaction faster? There are more collisions per second and the collisions are of greater energy. Collisions occur with greater energy. There are more collisions per second.