General Chemistry Answers

We have available 44.8 l H₂, how many grams of hydrogen correspond to this volume under standard conditions, Ar(H) = 1?

The reaction of bromine with alkenes serves as a reaction to identify the double bond of alkenes. What kind of reaction is it?

A target mass of 20.415 g of zinc phosphate is desired. Calculate the moles of potassium phosphate required to meet the target mass of zinc phosphate. The molar mass of zinc phosphate is 386.11 g/mol. 

how many grams of H3PO4 will be needed to prepare 2 liters of a 0.45 N solution

Based on the properties and composition of buffer solutions,what will be the pH of this buffer solution if 3.5 g NH₄OH (M (NH₄OH) = 35 g / mol) and 5.35 g NH₄Cl (M (NH₄Cl) = 53.5 g / mol) are dissolved in 1 l of water? pKb = 4.75

What is the limiting and excess reactants in the reaction between 3 moles of NH3 and 6 moles of CuO?

The process of passing the solvent through the semi-release membrane from the solution from the lowest concentration to the solution with the highest concentration is called?

Element A has 17 electrons, element B has 19 electrons. Element C has 35 electrons. Which of these elements have the smallest atomic radius

Consider the following reaction:

                       6 NiO(s) + 4 ClF3(g) ® 6 NiF2(s) + 2 Cl2(g) + 3 O2(g)

           What mass of NiO will react with a sample of ClF3 gas that has a pressure of 250 torr in a 2.5-L flask at 20°C?

Plutonium-239 (produced in breeder reactors has a half-life of 24,100 years. How long

will it take for a sample of plutonium-239 to decay to 0.100% of its original value?