If 15.60 g of a hydrated compound is heated in an oven for several hours, its mass drops to 8.63 g. assuming that the reduction in mass is due to loss of water, what is the percentage of water in the original hydrate? use the formula 44.7% 55.3% 69.7% 80.8%

Agood hypothesis includes which of the following? a: prediction b: data c: uncertainty d: conclusion

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?

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.