Hot lead with a mass of 200.0 g of (Specific heat of Pb = 0.129 J/g˚C) at 176.4˚C was dropped into a calorimeter containing an unknown volume of water. The temperature of the water increased from 21.7˚C to 56.4˚C. What mass of water is in the calorimeter?

What is the chemical formula of the following compound

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

An alkaline battery produces electrical energy according to the following equation. zn(s) + 2 mno2(s) + h2o(l) zn(oh)2(s) + mn2o3(s) (a) determine the limiting reactant if 17.5 g zn and 31.0 g mno2 are used. (type your answer using the format ch4 for ch4.) (b) determine the mass of zn(oh)2 produced. _ g