Which equation represents and oxidation/reduction (redox) reaction? a) zns(s) + 2hcl(aq) → zncl2(aq) + h2s(g) b) h2so4(aq) + 2koh(aq) → k2so4(aq) + 2h2o(l) c) 2al(no3)3(aq) + 3zn(s) → 2al(s) + 3zn(no3)2(aq) d) na2co3(aq) + ca(no3)2(aq) → caco3(s) + 2nano3(aq)

Write a brief passage describing a neutral atom of nitrogen-14 (n-14). describe the number of protons, neutrons, and electrons in the atom, where each type of particle is located, and how the terms atomic number, mass number, and atomic mass are related to the particles. use the periodic table to you. 14 protons and eletrons since its a neutral atom

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Write the formula for the following chemicals. 7. e. trinitrogen tetraoxide a calcium phosphate f. magnesium acetate b. potassium sulfide g nickel(iii) cyanide c carbon dioxide h. silver sulfate d. cobalt(ii) chloride