2 years ago

Well can someone help me

Chemistry

1 answer:

NNADVOKAT [17]2 years ago

5 0

Chlorophyll is an example of a pigment.

You might be interested in

Ray Of Light [21]

theAnswer:A

Explanation:

6 0

2 years ago

Gallium has two naturally occurring isotopes: 69ga with a mass of 68.9256 amu and a natural abundance of 60.11% and 71ga. use th

Nataly [62]

There are two naturally occurring isotopes of gallium: mass of Ga-69 isotope is 68.9256 amu and its percentage abundance is 60.11%, let the mass of other isotope that is Ga-71 be X, the percentage abundance can be calculated as:

%Ga-71=100-60.11=39.89%

Atomic mass of an element is calculated by taking sum of atomic masses of its isotopes multiplied by their percentage abundance.

Thus, in this case:

Atomic mass= m(Ga-69)×%(Ga-69)+X×%(Ga-71)

From the periodic table, atomic mass of Ga is 69.723 amu.

Putting the values,

$69.723 amu=(68.9256 amu)(\frac{60.11}{100})+X(\frac{39.89}{100})$

Thus,

$69.723 amu=41.4312 amu+X(\frac{39.89}{100})$

Rearranging,

$X=\frac{69.723 amu-41.4312 amu}{0.3989}=70.9246 amu$

Therefore, mass of Ga-71 isotope is 70.9246 amu.

7 0

2 years ago

Read 2 more answers

If you had a glacier and an ice cube, how would the melting points of both differ?

Dima020 [189]

Answer:

Due to how big the glacier is you would need more heat to melt it and since the ice cube is smaller a small amount of heat would melt it

Explanation:

8 0

3 years ago

List one extensive and intensive property of marker ink

Viktor [21]

Do you know the difference between an extensive property verses an intensive property?

8 0

2 years ago

Problem: What is the kinetic energy of a 0.500 kg rabbit, running at 8.00 m/s? Calculate using the formula,

arsen [322]

Answer:

the answer s 9.000ms

Explanation:

that's the answer

4 0

2 years ago