When the following equation is balanced, the coefficients are ________.                                       Al(NO3)3 + Na2S → Al2S3 + NaNO3

The correct answer (reported to the proper number of significant figures) to the following is _______.                                           6.3 × 3.25 = ________

A 17.2 g sample of potassium chlorate is dissolved in 250 g of water at 65 °C. The solution is cooled to 30.0 °C and no precipitate is observed. This solution is ________.

Which one of the following conditions would always increase the internal energy of a system?

The mole fraction of urea (MW = 60.0 g/mol) in a solution prepared by dissolving 16 g of urea in 39g of H2O is ________. YOU MUST SHOW YOUR WORK FOR THIS PROBLEM

A 210. Lb. person is required to take a medication at a dose of 5.00 mg per kg of body weight twice a day. How much medication would the person take in a 24-hour period? (Indicate the number in proper scientific notation with the appropriate number of significant figures.) YOU MUST SHOW YOUR WORK FOR THIS PROBLEM

Rationalize the following expression: 63{“version”:”1.1″,”math”:”63″}

The majority of phosphorous on earth is located

Epinephrine and norepinephrine are secreted by the ____________________________.

The conversion of atmospheric nitrogen into ammonium is referred to as _______________________.