User Account

All Pages

Calculate the relative abundance

Assignment Help Chemistry
Reference no: EM132287465

The element rubidium exists in nature as two isotopes: 85Rb has a mass of 84.9118 u, and 87Rb has a mass of 86.9092 u. The average atomic mass of rubidium is 85.47 u. Calculate the relative abundance (as percentages) of the two rubidium isotopes.

Reference no: EM132287465

Questions Cloud

Solution supersaturated-saturated or unsaturated : Is the solution supersaturated, saturated or unsaturated?
Schematic diagram below for a galvanic cell : In the schematic diagram below for a galvanic cell, the half-cell on the left consists of a Zn(s) electrode in a 1.0 mol L-1 Zn(NO3)2(aq)
Determine e for the reaction that occurs : Determine E?° for the reaction that occurs in each of following cases. Enter your answers accurate to 3 decimal places (e.g., 1.427, 0.318, 0.062, etc.)
What is the concentration : For the electrochemical cell below, the half-cell on the left is the anode and the cell potential is 0.165 V at 25 °C.
Calculate the relative abundance : The average atomic mass of rubidium is 85.47 u. Calculate the relative abundance (as percentages) of the two rubidium isotopes.
Nitrate solution at the same temperature : A saturated solution of lead bromide in pure water has a bromide-ion concentration of 3.8x10^-2M.
What is the molar mass of unknown organic compound : The sample was vaporized. The resulting gas had a pressure of 0.54 atm at 28.5oC. What is the molar mass of this unknown organic compound?
Reaction rate increase on going from : For the reaction O(g) + O3 --> 2O2(g) the activation energy is 17.1 kJ mol-1. By what factor does the reaction rate increase on going from 100 K to 200 K?
Identify all of the phases in answer : 1. Express your answer as a chemical equation. Identify all of the phases in your answer.

Reviews

Write a Review

Chemistry Questions & Answers

  Buffer with the ph of a buffer

What volume of 0.200mol/L HCOOH and 2.00 mol/L NaOH would make 500. mL of a buffer with the ph of a buffer made from 475 mL of 0.200mol/L benzoic acid.

  Explain solid nacl in a saturated solution of nacl continues

if the solid NaCl in a saturated solution of NaCl continues to disolve, why is there no change in the concentration of the NaCl solution

  The vessel contains 200 moles of hydrogen 200 moles of

three gases hydrogen argon and methane are confined in a 9.00 l vessel at a pressure of 14.0 atm. the vessel contains

  Which of the following compounds might be present

Based on these observations, which of the following compounds might be present, which are definitely present, and which are definitely absent: CdS, Pb(NO3)2, HgO, ZnSO4, Cd(NO3)2, and Na2SO4?

  Determine to two decimal places the molar masses

Given the reaction by the equation Mg + 2HCL yeilds H2 + MgCl2, determine to two decimal places the molar masses of all substances involved.

  Explain the single atom of an isotope does not have

The single atom of an isotope does not have a: a)relative atomic mass b) atomic number c)mass number d)average atomic mass

  Consider to the structure of 1,3-biphosphoglycerate

Consider to the structure of 1,3-biphosphoglycerate provide one chemical instance for the large Delta(G)Prime value of the compound.

  What mass of salt add to water in an ice cream maker

Problem- What mass of salt (NaCl) should you add to 2.00L of water in an ice cream maker to make a solution that freezes at -11.8?C. Assume complete dissociation of the NaCland density of 1.00 g/mL for water.

  Explain creating octyl acetate from acetic acid

Write balance equations for all the reactions that take place during neutralization when creating octyl acetate from acetic acid and n-octyl alcohol

  When o514 g of biphenyl c12h10 undergoes combustion in a

when o.514 g of biphenyl c12h10 undergoes combustion in a bomb calorimeter the temperature rises from 25.8 to 29.4

  Explain difference between formula units and molar mass

Please explain the difference between Formula Units and Molar Mass. Discuss what a "Kelvin" is and for what it is used.some details please. Does a baseball have a deBroglie wavelength? If no, why not? If yes, why can't we see it?

  Calculate the math of co2

Propane burns in oxygen to produce carbon dioxide and water. c3h8 +5o2 yeilds 3co2 +4h2o Calculate the math of co2 that can be produced if reaction of 44g of propane and suficient oxygen has a 60% yeild.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd