calculate the heat required in joules to convert 18.0 grams of water ice at a temperature of -20 c to liquid water at the normal boiling point of water given specific heat of ice 2.09

During trial 2, what allowed you to determine that aluminum was the limiting reactant? check all that apply. all of the copper dissolved. all of the aluminum dissolved. the solution turned clear. the number of grams of copper(ii) chloride used in the reaction was greater than the number of grams of aluminum. the molar ratio of copper(ii) chloride to aluminum was greater than 3: 2, the equation’s molar ratio.

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a. the mitochondria b. the nucleus c. the vacuoles d. the endoplasmic reticulum

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false