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
DiKsa [7]
3 years ago
6

A certain element exists as two different isotopes. 65.0% of its atoms have a mass of 24 amu and 35.0% of its atoms have a mass

of 26 amu. What is the average atomic mass of this element?
amu
Chemistry
1 answer:
Sauron [17]3 years ago
4 0

Answer:

24.7 amu

Explanation:

An isotope is when an element can have different number of neutrons but they have same number of protons.

In order to calculate the average atomic mass with the given information do the following operations:

First change de percentages to fractional numbers, divide by 100.

I like to make a table, to organize all data and I believe is easier to understand.

65/100 = 0.65

35/100 = 0.35

% fraction

65.0 0.65

35.0 0.35

total100.0 1

Now multiply each mass with their corresponding fraction

24 (0.65) = 15.6

26 (0.35) = 9.1

%    fraction uma uma

65.0 0.65 24 15.6

35.0 0.35 26 9.1

total100.0    1          24.7

Finally you add the resulting mass and the units will be in uma.

15.6+9.1 = 24.7

Therefore the average atomic mass of this element will be 24.7 uma.

Check the table in the document attached

Download xlsx
You might be interested in
If a reaction ends with 5.5 grams of products, how many grams of reactants were required to start the reaction?
xz_007 [3.2K]
5.5 grams of reactants. According to the Law of Conservation of Mass, mass isn’t created or lost through any chemical changes, so the total mass should remain constant from the initial reactants to the final products.
5 0
3 years ago
Question 6 of 10
love history [14]
B. Newton’s second law
6 0
2 years ago
Why is an earth called natural green house. explain in brief​
crimeas [40]

Answer:

The greenhouse effect is a natural process that warms the Earth's surface. ... The absorbed energy warms the atmosphere and the surface of the Earth. This process maintains the Earth's temperature at around 33 degrees Celsius warmer than it would otherwise be, allowing life on Earth to exist.

8 0
2 years ago
How many hydrogen atoms are there in 7.30 moles of ethanol
saveliy_v [14]
There are 6 hydrogen atoms in every molecule of ethanol
6 0
3 years ago
Please I need help with Chemistry ! Questions in attachment, I'LL GIVE THE BRAINLEST AND POINTS ! I need it soon !!
ludmilkaskok [199]

Answer:

1)

A) Bromine

B) Lithium

C) Calcium

D) Sodium

E) Actinium

2)

Carbon: 60

Magnesium 24 times

bromine is 14 times

3)

24 times

8/3 times

4)

Hydrogen

Helium

5)

Explanation:

7 0
2 years ago
Other questions:
  • How many moles of Pb(NO3)2 are required if 8 moles of PbCl2 are produced
    12·1 answer
  • Do you know any of the answers
    7·1 answer
  • When H2 and CO2 react, acetic acid can be formed spontaneously while the production of formaldehyde requires an input of energy.
    12·1 answer
  • Assign each species to the expression that most accurately describes the basic units of that substance. categories: single atoms
    11·2 answers
  • HELP ASAP ILL GIVE BRAINLIEST!!
    7·1 answer
  • What happens if you mix Hydrochloric Acid (HCl) and Sodium Bicarbonate (NaHCO3 ) together?
    8·2 answers
  • How many molecules are there in 42gms of Na?
    5·1 answer
  • How many moles of H2O form when 4.5 moles O2 reacts?
    14·1 answer
  • Normal
    9·1 answer
  • Hi May I know what is the answer and how to get it
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!