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
IgorLugansk [536]
4 years ago
12

Calculate the atomic mass of c 13

Mathematics
1 answer:
Fiesta28 [93]4 years ago
3 0

Step-by-step explanation:

12C is listed as having a fractional abundance of 0.989 (or a percent abundance of 98.9%) and an atomic weight of 12.000000 u (u represents atomic mass units). 13C is listed as having a fractional abundance of 0.011 (or a percent abundance of 1.1%) and an atomic weight of 13.003355 u

You might be interested in
sam has a collection of toy cars. His favorites are the 27 red ones which make up 60% of his collection. How many toy cars does
sladkih [1.3K]
Well, if 27 cars make up 60% of his entire collection, so you'd want to change 60% into a decimal, which would make it .6. Then, you'd want to divide .6 by 27. You should hopefully get 45 as your answer. 
Hopefully that helped! :)
3 0
3 years ago
Ten items are selected at random from a production line It is known that the probability of finding a defective item from this l
lesya [120]

Answer:

wateva u want it to be

Step-by-step explanation:

the answer is wateva u want it to be all u gotta do is give it ur best and search it up i hope u do good on ur test rate me 5 and like plz

6 0
3 years ago
Find the probability of rolling two number cubes and getting a 2 on the first number cube and a 6 on the second?
Tanzania [10]

Answer:

A

Step-by-step explanation:

A cube has 6 sides

Only one side of the cube has 2 on it

The probability of getting 2 would be 1/6

Only one side of the cube has 6 on it

The probability of getting 6 would be 1/6

For both events to happen together

1/6 x 1/6 = 1/36

4 0
4 years ago
Solve x2 + 10x + 12 = 36 for x. x = â12 or x = 2 x = â11 or x = 1 x = â2 or x = 12 x = â1 or x = 11
meriva
The answer is number A: â12 or x = 2
6 0
3 years ago
Please help me with this question​
Trava [24]

Applying the formula for the area of a sector and length of an arc, the value of k is calculated as: 27.

<h3>What is the Area of a Sector?</h3>

Area of a sector of a circle = ∅/360 × πr²

<h3>What is the Length of an Arc?</h3>

Length of arc = ∅/360 × 2πr

Given the following:

  • Radius (r) = 9 cm
  • Length of arc = 6π cm
  • Area of sector = kπ cm²

Find ∅ of the sector using the formula for length of acr:

∅/360 × 2πr = 6π

Plug in the value of r

∅/360 × 2π(9) = 6π

∅/360 × 18π = 6π

Divide both sides by 18π

∅/360 = 6π/18π

∅/360 = 1/3

Multiply both sides by 360

∅ = 1/3 × 360

∅ = 120°

Find the area of the sector:

Area = ∅/360 × πr² = 120/360 × π(9²)

Area = 1/3 × π81

Area = 27π

Therefore, the value of k is 27.

Learn more about area of sector on:

brainly.com/question/22972014

4 0
3 years ago
Other questions:
  • antonio's father bought tickets to the planetarium he bought 5 tickets each ticket cost $14 what was the total cost for the 5 ti
    13·1 answer
  • What is the equation of the axis of symmetry for the parabola y=-1/2(x+3)^2-5
    6·1 answer
  • <img src="https://tex.z-dn.net/?f=16x%20-%20%288x%20%20%2B%206%29%20%3D90" id="TexFormula1" title="16x - (8x + 6) =90" alt="16x
    12·1 answer
  • A line passes through point (3, 7) and has a slope of 3/4 .
    13·1 answer
  • The simplest form of *<br><br> 0.545454545454.........................
    6·2 answers
  • Alberto and Maria share $240 in the ratio 3:5.
    15·2 answers
  • Pls ANWSER this easy question for math all my points *32*
    12·2 answers
  • Write an equation of the line that passes through (6, – 2) and is parallel to the line y = x-3
    13·1 answer
  • An electrician charges $95 an hour for labor and an initial fee of $65. The total cost c equals 95 times the number of hours x p
    7·1 answer
  • What does two of power of five stand for?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!