Suppose an unknown compound XY has an X-to-Y mass ratio of 4:1. If decomposition of compound XY gives 24.0 grams of X, then how many grams of Y must form?

Provide the chemical formula for the following compound: dibromine pentoxide

Given the following generic equation, 2 A + 3B → A2B3 △H rxn = +444 kJ, what is the amount of heat exchange that happens when 3 moles of “A” react? 

Acid-base neutralizations, in general are exothermic reactions.Hydrochloric acid reacts with barium hydroxide according to the equation: Calculate the heat (in kJ) associated with the complete reaction of 18.2 grams of HCl (aq). (molar mass of HCl 36.5 g/mol)

Provide the name for the following compound: Ba(NO2)2

The theoretical yield of a reaction is 86.0 grams of product and the actual yield is 60.0 g. What is the percent yield?

Provide the chemical formula for the following compound: Lithium carbonate

COMPARATIVI IRREGOLARI:  MINORE è il comparativo irregolare di…

The cardiologist has ordered 100mg Lopressor (Metoprolol) for a patient. The Patients Vitals are as followed. BP: 106/48 , temp: 98.9, HR:55 , Resp/O2: 20, 92%. Which of the following are critical to address prior to administration? Choose ALL that apply.

What is the personal allowance for investment in an Individual Savings Account (“ISA”) during the current tax year?