Some classmates conducted an experiment to find out which brand of paper towels is the strongest. you find out that they didnt try to control any variables write a few sentences explaning why they cannot draw any useful conclusions from their experiment

How many moles of gas are present if p=11 atm, v=12l, t=185k?

Why does asexual reproduction result in offspring with identicle genetic variation

Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?