Statethe isotopic percentage abundance atomic weight

Assignment Help Chemistry
Reference no: EM13170900

Calculate the 147Sm/144Nd ratio of a rock containing 1.83 ppm Sm and 5.51 ppm Nd. The atomic weight of Sm is 150.36 and that of Nd is 144.24. The isotopic percentage abundance of 147Sm is 15.0 and that of 144Nd is 23.954.

Reference no: EM13170900

Questions Cloud

Find the amount of thermal energy produced : Find the amount of thermal energy produced in kilojoules when 18.9 g of water is heated from 16°C to 98.0°C.
Compute how long it will take for the isotope : Calculate how long it will take for 0.500 g of the isotope to be reduced to 0.150 g by decay.
What is the theoretical mass of xenon tetraflouride : what is the theoretical mass of xenon tetraflouride that form when 118. grams of xenon is reacted with 62.0 grams of flourine?
What is the partial pressure of methane : Three gases, hydrogen, argon, and methane are confined in a 8.00 L vessel at a pressure of 6.00 atm. The vessel contains 4.00 moles of hydrogen, 5.00 moles of argon, and 2.00 moles of methane. What is the partial pressure of methane?
Statethe isotopic percentage abundance atomic weight : The atomic weight of Sm is 150.36 and that of Nd is 144.24. The isotopic percentage abundance of 147Sm is 15.0 and that of 144Nd is 23.954.
Food producers love big boxes : Food producers love big boxes because they serve as billboards on store shelves. Walmart wants to change this practice and promises suppliers that their shelf spaces won't shrink even if their boxes do.
What is the ph of a solution : what is the ph of a solution that is 0.100 M in HCl and also 0.125 M in HC2H3O2? What is the concentration of the acetate ion in this solution?
Perpetual inventory system and the cost-of-goods-sold method : Perpetual system and the loss method with an allowance account, prepare the journal entries required at December 31, 2010 and December 31, 2011.
State a sample of a refrigeration gas in a volume : A sample of a refrigeration gas in a volume of 410 mL, at a pressure of 1.26 atm, and at a temperature of 11.0 °C, was compressed into a volume of 172 mL with a pressure

Reviews

Write a Review

Chemistry Questions & Answers

  Calculate the theoretical yield of c2h5cl

When ethane (C2H6) reacts with chlorine (Cl2) the main product is C2H5Cl; but other products containing Cl (chlorine), such as C2H4Cl2, are also obtained in small quantities. The formation of these other products reduces the yield of C2H5Cl. In a ..

  Calculate the molality of the solution

A water solution containing 2.00 g of an unknown molecular substance dissolved in 10.00 g of water has a freezing point of 4.0°C. a. Calculate the molality of the solution.

  What is the mass in grams of the lead

The water level in a graduated cylinder initially at 210 mL rises to 277 mL after a piece of lead is submerged. What is the mass in grams of the lead?

  Find the temperature of the water

A mixture of 4.0 mol of H2 and 2.0 mol of O2 is placed in a sealed evacuated container made of a perfect insulating material at 27C. The mixture is ignited with a spark and it reacts to form liquid water. Find the temperature of the water.

  Explain the concentration of this compound in the sample

The concentration of this compound in the sample is 0.000030 M and the path length of the sample is 1.0 cm

  Calculate the ph of a solution

Calculate the pH of a solution made by adding 42 g of sodium acetate, NaCH3COO, to 16 g of acetic acid, CH3COOH, and dissolving in water to make 300. mL of solution.

  State the nitrate ion is a very poor nucleophile

The nitrate ion (NO3-) is a very poor nucleophile. In fact, solvents such as water or methanol (also weak nucleophiles) are more reactive nucleophiles than the nitrate ion

  The molecule of water produced information of an ester

How could you ascertain wheter the alcohol or the carboxylic acid furnishes the hydroxyl group that appears in the molecule of water

  Describing adverse effects caused by exposure to radiation

I need help in describing the adverse effects caused by exposure to radiation. Include some specific exposure levels associated with these significant health effects.

  Determine the enthalpy change

Consider the reaction: 2 K(s) + 2 H2O(l) -> 2 KOH(aq) + H2(g), DH = ? The heat released when 24.9g of K reacts with excess water is 124 kJ. Determine the enthalpy change, DH, for the above equation as written

  Determine numerical value of the kc equilibrium constant

Concentration of H 2 is  observed 2.15 moles/L When the reaction N 2 (g) + 3 H 2 (g) ?? 2 NH 3 (g) comes to equilibrium. Determine the numerical value of the Kc equilibrium constant?

  What are the bond angle measurements of aspartame

How many valence electrons does one molecule of aspartame have? What are the bond angle measurements of aspartame?

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!

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