jadore59 jadore59

10-10-2022
Chemistry

Answered

Calculate the average atomic mass of rubidium. Rubidium has two isotopes, 85Rb and 87Rb. 85Rb has an atomic mass of 84.912 amu and occurs at an abundance of 72.17%. 87Rb has an atomic mass of 86.909 amu and occurs at an abundance of 27.83%.

Answer :

Other Questions

Compute the percent difference of the following problem: According to the Periodic Table of the Elements, the atomic mass of aluminum is 26.9815g/mol. A calcula

which hypothesis of thomson’s atomic model was later found to be not true by rutherford and why

If equal masses of the following compounds were dissolved in water to prepare 100.0 mL of solutions which of them would have the lowest concentration of sodium

A quantity of 7.181 g of an organic compound is dissolved in water to make 288.0 mL of solution. The solution has an osmotic pressure of 1.43 atm at 27°C. The a

When 3.98 g of bismuth oxide (molar mass = 465.96 g/ml) reacts with excess carbon to form 2.97 g of bismuth metal (molar mass = 208.98 g/mol) according to the e

When 25.0 mL of 0.500 M AgNO, solution is mixed with 40.0 mL of 0.250 M Na SO4, solid Ag-SO4 precipitates out. What mass of AgSO4 is formed? (The molar mass of

Could one atom of Nitrogen and one atom of Chlorine be isotopes?

How many moles of silver are present in a silver spoon that has a mass of 12.86 g? You do not need to type your units into the answer box. Please report your an

Calculate the number of moles of carbon dioxide gas present in a 2.75 L flask at STP

If the moxie tank has an initial pressure of 50 atm in the winter what will be the pressure in summer