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
pentagon [3]
4 years ago
13

An atom has the following three isotopes: 24 amu (percent abundance = 78.99%)25 amu (percent abundance =10.00\%) , and 26 amu (p

ercent bundance=11.01\%) . Calculate the average atomic mass. What is the identity of this atom based on your calculation?
Chemistry
2 answers:
weeeeeb [17]4 years ago
8 0
We multiply each mass with its percentage.
24*(78.99/100) = 18.96
25*(10/100)= 2.5
26*(11.01/100)= 2.86
Then add these together.
18.96+2.5+2.86= 24.32amu
An element that has an average mass of nearly 24.32amu would be Mg (magnesium)
tamaranim1 [39]4 years ago
8 0
The average atomic mass is 24.31. The element is likely Magnesium.

Work:
24(0.7899) = 18.95
25(0.1000) = 2.5
26(0.1101) = 2.86
18.95 + 2.5 + 2.86 = 24.31
You might be interested in
Explain the reason potassium was visible when using the cobalt glass. Describe what occured.
Korolek [52]

Explanation:

If potassium is burnt the ions go into a high state of energy. Once they cool, it gives off energy in the form of a visible spectrum which has a characteristic color Now, The cobalt glass blocks out yellow light, and potassium ion which is purple in color is visible.

3 0
3 years ago
18. Which statement about photosynthesis is FALSE?
joja [24]
<h3>your query : </h3>

Which statement about photosynthesis is FALSE?

Answer:

b. Oxygen is needed as a reactant to produce

glucose is the incorrect statement here

Explanation:

plants uses simple raw materials to prepare their food , which includes water ( H2O ) and Carbon dioxide ( CO2 ).

and traps sunlight by Green pigments known as chlorophyll and stores these energy in bonds of glucose molecules

so ,

after this reaction glucose and oxygen is formed as products

● hence we conclude that Oxygen is not needed as a reactant to produce glucose , oxygen is the bi product formed during photosynthesis.

7 0
3 years ago
You are a marine biologist who wants to study what type of zooplankton (microscopic animals that live in the ocean and feed larg
timama [110]

Answer:

The advantage of the compound light microscope over the dissecting microscope is the magnification power of the telescope. Compound light microscope magnifies from 40x up to 1,000x while dissecting microscope magnifies up to 40 x only. In this regard, more magnification power is advantageous to view smaller objects. 

4 0
3 years ago
What is the law of multiple proportions?
quester [9]

Answer:

I think

(d) All compounds contain the same elements in the same properties

6 0
3 years ago
Conditions for reaction of oxygen and copper
Grace [21]
I believe a hydrochloric gas will be let off
8 0
3 years ago
Other questions:
  • How do you differentiate between gas and a vapour ?
    15·1 answer
  • What process uses analysis of the decay of atomic particles to determine exact age?
    10·2 answers
  • Which of earths spheres contains most of its mass?
    13·2 answers
  • Which will have both the highest ionization energy and the largest atomic
    9·1 answer
  • How would I draw this? Thank you in advance!<br> (Z)-4-chloro-3-methylhept-2-ene
    13·1 answer
  • Which of the following is NOT a derived unit?<br><br>a) <img src="https://tex.z-dn.net/?f=cm%5E%7B3%7D" id="TexFormula1" title="
    10·2 answers
  • Atoms of elements that are in the same group have the same number of
    8·1 answer
  • Can someone help me...........................
    8·2 answers
  • Chemistry, 50 points!!! Will also mark brainliest if you answer everything
    15·1 answer
  • 4 points
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!