1. From the following isotopic masses and abundances, calculate the atomic weight ofLakerium from dimension X.IsotopeAbundanceMass2332.33%23.0192444.22%24.0082723.45%27.8952. Casey read that the average atomic mass of the element galium is 69.72 amu. If it iscomposed of two isotopes 69Ga (68.926 amu) and 71Ga (70.925 amu), calculate thepercent composition of the isotopes present.3. Next lab will involve an indirect method for determining the density of the various sucrosesolutions. What are the principles involved for this indirect method? How does thecalculation differ from the direct method?he ch yout FOUnd-e theFollewinghgt smigni ficarf itif15etstonificant

Question
Asked Aug 27, 2019
78 views
1. From the following isotopic masses and abundances, calculate the atomic weight of
Lakerium from dimension X.
Isotope
Abundance
Mass
23
32.33%
23.019
24
44.22%
24.008
27
23.45%
27.895
2. Casey read that the average atomic mass of the element galium is 69.72 amu. If it is
composed of two isotopes 69Ga (68.926 amu) and 71Ga (70.925 amu), calculate the
percent composition of the isotopes present.
3. Next lab will involve an indirect method for determining the density of the various sucrose
solutions. What are the principles involved for this indirect method? How does the
calculation differ from the direct method?
he ch you
t FOUnd-
e the
Follewing
h
gt s
migni ficar
f it
if
15
et
stonificant
help_outline

Image Transcriptionclose

1. From the following isotopic masses and abundances, calculate the atomic weight of Lakerium from dimension X. Isotope Abundance Mass 23 32.33% 23.019 24 44.22% 24.008 27 23.45% 27.895 2. Casey read that the average atomic mass of the element galium is 69.72 amu. If it is composed of two isotopes 69Ga (68.926 amu) and 71Ga (70.925 amu), calculate the percent composition of the isotopes present. 3. Next lab will involve an indirect method for determining the density of the various sucrose solutions. What are the principles involved for this indirect method? How does the calculation differ from the direct method? he ch you t FOUnd- e the Follewing h gt s migni ficar f it if 15 et stonificant

fullscreen
check_circle

Expert Answer

Step 1

Hey, since there are multiple questions posted, we will answer first question. If you want any specific question to be answered then please submit that question only or specify the question number in your message.

Step 2

The atomic weight of certain element which has isotopes is calculated by using following formula,

2 Isotope mass x Fractional abundance
Weighted atomic mass =
help_outline

Image Transcriptionclose

2 Isotope mass x Fractional abundance Weighted atomic mass =

fullscreen
Step 3

The atomic weight of given su...

(23.019 x 0.3233) + (24.008 x 0.4422)+ (27.895 x 0.2345)
Weighted atomic mass =
=24.5997578
-24.6
help_outline

Image Transcriptionclose

(23.019 x 0.3233) + (24.008 x 0.4422)+ (27.895 x 0.2345) Weighted atomic mass = =24.5997578 -24.6

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Chemistry

Related Chemistry Q&A

Find answers to questions asked by student like you

Show more Q&A add
question_answer

Q: Which of the following bonds would be the most polar? a. C-Br b. C-I c. Cl-Cl d. C-F

A: The difference in electronegativity between the two atoms of the bond determines the polarity of the...

question_answer

Q: 5. Write a flow chart to show how you could separate the following pairs of compounds by using acid-...

A: Step1:By using acid base extraction, from a given mixture separation of pure compounds depends on th...

question_answer

Q: LAIH4 CEN CENDIBAL C N MgBr > THF(Solven) O Lit e YO (LDA) Y CH3I CH3I To- Noe Cl2 NH2 Hcl /H20 0 2)...

A: Product of the reaction has to be identified.(a)Reduction: Nitriles undergoing reduction by using Li...

question_answer

Q: hi explain the basic about chemistry

A: Chemistry is a branch of science, which studies the properties of and interactions between matter an...

question_answer

Q: A normal adult jawbone contains 200 mg of Carbon-14 in a living person.  If scientists found a jawbo...

A: Click to see the answer

question_answer

Q: What is chemistry?

A: Chemistry is a branch of science in which a matter’s properties, reactivity of it with other substan...

question_answer

Q: (3) According to Charles’ law, if the volume of a container of a gas is doubled, at constant pressur...

A: Hey, since there are multiple questions posted, we will answer first question. If you want any speci...

question_answer

Q: calculate dipole moment of C-N? Provide explanation of how to calculate the formula and then what en...

A: The quantity that measure the separation of two opposite charges known as dipole moment. It is vecto...

question_answer

Q: What volume of 0. 2 00 M HCl is required to react completely with 1 . 68 g of sodium hydrogen carbon...

A: First, find the number of moles of HCl required,