11. Classify each of the following chemical reactions as a combination, decomposition, single replacement, double replacement, or combustion reaction:
Type of reaction
Equation of the chemical reaction
CuO(s) + 2HCl(aq) —— CuCl2(aq) + H20(1)
2A1303(s) => 4Al(s) + 302(8)
De composition
BaCl2(aq) + K2CO3(ad) —→ BaCO3(s) + 2Cl(aq)
Pb(s) + O2(8) -PbOz(s)
C3H2(g) + 702() =5CO2(g) + 4H20(3)
Zn(s) + CuCl2(aq) + Cu(s) + ZnCl2(aq)
Combustion

1.aluminum chloride (alcl3), and sodium hydroxide (naoh) can react to form aluminum hydroxide (al(oh)3) and sodium chloride (nacl).    you have 13.4 g of aluminum chloride and 10.0 g of sodium hydroxide. answer the following questions: •what is the balanced equation for this reaction? •if you use all 13.4 g of aluminum chloride, how many grams of aluminum hydroxide can be formed? work must be shown to earn credit •if you use all 10.0 g of sodium hydroxide, how many grams of aluminum hydroxide can be formed? work must be shown to earn credit •how many grams of aluminum hydroxide will actually be made?     which reagent is limiting? explain your answer.

Which explanation is true about what happens to a ray of light when it strikes a mirror? a. a light ray is transmitted toward a mirror at a certain angle. the light ray is then reflected by the mirror at an equal angle but in the opposite direction of the transmitted ray. b. an incident ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then reflected at an angle equal to the angle of incidence but on the opposite side of the perpendicular line. c. a reflecting ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then refracted at an angle equal to the angle of the reflecting ray and on the same side of the perpendicular line. d. an incident ray strikes a mirror at an angle with a line parallel to the mirror. the light ray is then transmitted at an angle equal to the angle of incidence but on the opposite side of the parallel line. you so much! : -d take the time to try and answer correctly.

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins