I suck at this stuff soo 1. A student heated 100 mL of water from 0℃ to 50℃. How much energy did she use to heat the water?

2. Raquelle combines 3 volumes of water. She combines 50 mL of 10℃ water, 50 mL of 45℃ water, and 50 mL of 35℃ water. What is the final volume and temperature of the water?

In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.