An atom of magnesium has an atomic number of 12 and a mass number of 24. how many neutrons are in the neclues

How many milliliters of water would be needed to fill a one liter glass jar? A. 10 B. 100 C. 1,000 D. 10,000

How do you calculate the molecular formula of a compound?

Which of the following is an example of a synthesis reaction? A. H2 + Br2 → 2HBO B. NaCl → Nat + CI C. 2H20 + 2Na → 2NaOH + H2 D. Mg + H2SO4-→ MgSO4 + H2

Which statements about the equation shown above are correct? Check all that apply. 2h2+02>2h20

In each of the following indicate which reaction will occur faster. Explain your reasoning. (a) CH3CH2CH2CH2Br or CH3CH2CH2CH2I with sodium cyanide in dimethyl sulfoxide (b) 1-Chloro-2-methylbutane or 1-chloropentane with sodium iodide in acetone

Which of the following occurs as water vapor cools in the atmosphere? condensation transpiration precipitation evaporation

What is a polyatomic ion? Consulting p. 117 in text, list the formulas and names of at least 10 polyatomic ions.

What is the ionic composition and osmolarity of "physiological saline" - the intravenous fluid drip you receive at a hospital?

Why do dipoles cancel out?

Match each chemical with the correct use. 1. x-ray soft tissue organs 2. reduce pain and fever 3. anesthetic 4. treat acne A. benzoyl peroxide B. nitrous oxide C. acetylsalicylic acid D. barium