An ice cube at 0 degrees Celsius is heated until it melts and the water reaches 20 degrees Celsius. The amount if needed for this is 5.000x10^3J. What is the mass of the ice cube?

Which statement is true about ionic compounds?

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?