Ms. Laurent assigned the following equations for single replacement reactions to her students. (i) 2AgNO3 + Cu rightwards arrow Cu(NO3)2 + 2Ag

(ii) 2KI + Cl2 rightwards arrow2KCl + I2

(iii) ZnS + O2 rightwards arrow ZnO + 2S

She asked the students to identify the equations that support the law of conservation of matter. Which of the equations should the students identify?

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

How are evaporation and sublimation similar? a both involve the formation of a gas. b both release energy to the surroundings. c both take place throughout a solid. d both take place at the surface of a liquid.

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.