Explain the ratio of the number of atoms of the isotopes

Assignment Help Chemistry
Reference no: EM13499122

The ratio of the number of atoms of the isotopes Ga-69 and Ga-71 in eight samples from different sources was measured in an effort to understand differences in reported values of the atomic mass of gallium.

sample Ga-69/Ga-71
1 1.52660
2 1.52974
3 1.52592
4 1.52731
5 1.52894
6 1.52804
7 1.52685
8 1.52793

Find the
a) mean
b) standard deviation
c) variance
d) write the mean and standard deviation together with an appropriate number of significant digits.

Reference no: EM13499122

Questions Cloud

Discuss whether your client is a tax resident in new zealand : Discuss whether a capital gains tax, in your opinion, would result in a more equitable tax system in New Zealand.
What is the speed of recoil of the chair and cat : A cat crouches on the floor, at a distance of 1.6 m from a desk chair of height .45 m. The cat jumps onto the chair, landing with zero vertical velocity. What is the speed of recoil of the chair and cat
Explain what is the heat absorbtion for 100 g liquid water : What is the heat absorbtion for 100 g liquid water that is frozen to ice at 0 degrees C and 1 atm
Find the magnitude of the impulse delivered by the wall : A super ball, made of rubblerlike plastic, is thrown against a hard smooth wall. What is the magnitude of the impulse delivered by the wall
Explain the ratio of the number of atoms of the isotopes : The ratio of the number of atoms of the isotopes Ga-69 and Ga-71 in eight samples from different sources was measured in an effort to understand differences in reported values of the atomic mass of gallium.
What is the average angular speed of the grindstone : A grindstone of radius 4.0 m is initially spinning with an angular speed of 8.0 rad/s. What is the average angular speed of the Grindstone
Display the output of the sql statement : Write a procedure that takes a car registration and returns the most recent date of rental and the maximum rental period for that car.  The procedure had the following formal parameters
Explain what is the millimolar mm concentration of ethanol : What is the millimolar (mM) concentration of ethanol in the blood at this limit. The density of ethanol is 0.789 g/ml.
Prepare the income statement and owner equity statement : Charles Brown opened Charlie's House Cleaners on March 1. During March, the following transactions were completed.

Reviews

Write a Review

Chemistry Questions & Answers

  How many kilojoules of energy are required

How many kilojoules of energy are required to heat 50.0 g of ethanol from -20.0°C to 68.0°C?

  Define filter done with warm water instead of ice cold water

How would the % yield of aspirin be changed if the final rinse of the solid product on the filter paper was done with warm water instead of ice cold water

  How many grams of bromine gas occupy a volume

how many grams of carbon dioxide (CO2) gas at are contained in a volume of 344 liters at STP?

  What is the ph of the resulting mixture

In a titration, 10.0 mL of 0.025 M hydrochloric acid is added to 30.0 mL of 0.030 M ammonia. What is the pH of the resulting mixture?

  State catalytic converter of an automobile exhaust system

In the catalytic converter of an automobile exhaust system, some SO2 is converted to SO3 by the reactionSO2(g) + ½ O2(g) ? SO3(g)

  How much time will it take the water heater to heat water

A portable water heater transfers 225 watts of power to 5.5 L of water. How much time will it take the water heater to heat the 5.5 L of water from 22 to 40 degrees Celsius?

  Compute the molecular weight of the solute

A 4.305-gram sample of a nonelectrolyte is dissolved in 105 grams of water. The solution freezes at -1.23°C. Calculate the molecular weight of the solute. Kf for water = 1.86°C/m.

  Define the concentration of epinephrine or glucagon is high

when the concentration of epinephrine or glucagon is high, they bind to receptors on adipose cell membrane and all of the following can be expected to occur

  State the ph of the solution at equivalence

The pH of the solution at equivalence was 8.4. At 9.3 mL the pH was 5.3. What is the Ka for this acid? Please show all the work

  Explain what is the pressure within the tank

A steel tank has a volume of 438 L and is filled with 0.885 kg of O2 at 21°C. What is the pressure within the tank?

  Determine the concentration of a solution prepared

Determine the concentration of a solution prepared by diluting 25.0 mL of a stock 0.188 M Ca(NO3)2 solution to 150.0 mL.

  State the membrane fluidity of lipid bilayers

Assume that we are comparing the membrane fluidity of lipid bilayers. Rank the fluidity of the following bilayers in the order of increasing fluidity. Explain in each case the rationale behind your prediction

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