1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ycow [4]
2 years ago
15

Find the average atomic mass round and to the second decimal place (0.01)

Chemistry
1 answer:
andrezito [222]2 years ago
7 0

We have that

The average atomic mass round and to the second decimal place (0.01) is

A_m=126.90

From the question we are told

Find the average atomic mass round and to the second decimal place (0.01)

80% 127I, 17% 126I, 3% 128I

Generally the equation for the Average Mass   is mathematically given as

Where

a1 = 127  

b1 = 80%  

a2 = 126  

b2 = 17%  

a3 = 128  

b3 = 3%

A_m=|\frac{80 *127I +17 *126I+ 3 *128I}{100}

Therefore

A_m=|\frac{127*80+126*17+128*3}{100}\\\\A_m=126.90

In conclusion

The average atomic mass round and to the second decimal place (0.01) is

A_m=126.90

For more information on this visit

brainly.com/question/23379286

You might be interested in
Which one is unsaturated hydrocarbon?
Fittoniya [83]

Answer:

The correct answer is - D C2H4.

Explanation:

Saturated hydrocarbons are hydrocarbons with single covalent C-C bonds. They are known as alkanes. The general formula for these hydrocarbons is  CnH2n+2

Unsaturated hydrocarbons the hydrocarbons with double or triple covalent C-C bonds. They are known as alkenes and alkynes respectively. The general formula for these hydrocarbons is  CnH2n and CnHn-2

For the given options:

Option D: C2H4, is the simplest alkene with a double bond so it is an unsaturated hydrocarbon.

6 0
3 years ago
Find the density of a material, given that a 5.01 g sample occupies 3.46 mL
Alex73 [517]

Answer:

The answer is

<h2>1.45 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}

From the question

mass of material = 5.01 g

volume = 3.46 mL

The density of the material is

density =  \frac{5.01}{3.46}  \\  = 1.44797687...

We have the final answer as

<h3>1.45 g/mL</h3>

Hope this helps you

3 0
3 years ago
Analyze the following blood splatter pictures to determine the general direction, origin, and impact
kkurt [141]

Answer:

!!!!!!!!!!!!!!!!!!!!!!

3 0
3 years ago
Which of the following statements correctly describe a photon? Select all that apply.
svetlana [45]

Answer:

I believe it is 3 and 4. I really hope it is but i am positive :)

6 0
3 years ago
What does the atomic mass of a neutral atom tell you?
ExtremeBDS [4]

Answer:

yes

Explanation:

6 0
3 years ago
Other questions:
  • There are several ways that a mutation may occur. Which of the following is not a way for a mutation to occur during the DNA rep
    13·2 answers
  • Gas is trapped inside of a cell with volume 140 m3. The gas exerts 7600 Pa of pressure against the walls of the cell. A machine
    8·1 answer
  • Which of these reactions can be classified as synthesis reactions?
    6·1 answer
  • At a certain temperature the rate of this reaction is first order in SO₃ with a rate constant of 0.208 s⁻¹:
    8·1 answer
  • 1
    7·1 answer
  • Evaluate Questions To narrow down the location for a new development, a construction company gets several plots of land assessed
    13·2 answers
  • In the reaction 2 FeBr3 + 3 Cl2 → 2 FeCl3 + 3 Br2, how many grams of bromine gas are produced from 2.50 moles of FeBr3?
    6·1 answer
  • PLS FAST WILL GIVE BRAINLIEST!!! Compare compounds and mixtures. Be sure to discuss what they are composed of, how they are made
    8·1 answer
  • 40 POINTS!! If all of the water is removed from a one-mole sample of Ba(OH)2·8H2O, by how many grams will the mass of the sample
    14·1 answer
  • 4. The elements calcium and strontium have similar chemical properties because they both have the same
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!