Suppose you had used the same flask for preparing the standard solution and the dilution. How would the concentration of the dilution have been affected if you had not rinsed the flask before using it again? Explain.

An experimental procedure requires a 10 ml of acid to be dissolved

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

The combustion of methane, ch4, releases 890.4kj/mol. that is, when one mole of methane is burned,890.4 kj are given off to the surroundings. this meansthat the products have 890.4 kj less than the reactants. thus, ah for the reaction = - 890.4 kj. a negative symbolforah indicates an exothermic reaction. ch (g) + 20 (g)> co2 (g) + 2 h0 (1); ah = - 890.4 kga) how much energy is given off when 2.00 mol of ch, are burned? b) how much energy is released when 22.4g of ch. areburned?