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aivan3 [116]
4 years ago
11

Explain why the atomic mass of an element is usually not given as a whole number even though each individual atom of the element

has a whole number of protons and neutrons
Chemistry
1 answer:
Zinaida [17]4 years ago
7 0
An atomic mass is the sum of the protons and neutrons of a given element. The atomic mass is given it what is called a weighted average of all the different kinds of that element. Take carbon for example. It has carbon-12, carbon-13, and carbon-14. The reason its atomic weight is so close to 12 (12.011 ish) is because carbon-12 is by far the most common, and carbon-13 and -14 are so uncommon, that the weighted average is close to 12, but not exactly 12.
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What is the difference between rain and mist?
Fiesta28 [93]
Rain form from clouds, while mist forms at Earth’s surface
3 0
3 years ago
Read 2 more answers
Convert 100mL to L. Show your work to receive full credit.
Ilya [14]

Answer:

100 ml = 0.1 L

I divided 100 by 1000 because 1000ml = 1L

3 0
3 years ago
A chemist working as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the ca
BaLLatris [955]

Answer: The density of the liquid is 1.10g/cm^3

Explanation:

Density is defined as the mass contained per unit volume.

Density=\frac{mass}{Volume}

Given : Mass of the unknown liquid  = 938 grams

Volume of the unknown liquid = 0.852L=852cm^3  (1L=1000cm^3

Putting in the values we get:

Density=\frac{938g}{852cm^3}

Density=1.10g/cm^3

Thus the density of the liquid is 1.10g/cm^3 and the liquid is dimethyl sulfoxide.

8 0
3 years ago
Given the mass of the reactants add up to 49 grams, what is the total mass of the products
valina [46]

If the total mass of the reactants is 49g then the mass of the products also equals 49g.

It is due to the law of conservation of mass.

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5 0
3 years ago
4. Consider the following statement made in Chapter 4 of the text: "... consider that if the
AveGali [126]

The claim: "If the nucleus were the size of a grape, the electrons would be one mile away on average" is reasonably accurate because the ratios between the nucleus's sizes and the distances (between electrons and nucleus) for the two given examples are in the same order of magnitude.      

To know if the claim is accurate we need to calculate the ratio of the size of the nucleus (the same as a grape) and the distance between the electrons and the nucleus for example 1 (r₁):  

r_{1} = \frac{s_{1}}{d_{1}}    (1)

and to compare it with the ratio of the size and the distance given in example 2 (r₂):

r_{2} = \frac{s_{2}}{d_{2}}    (2)

<em>Where:</em>

s₁: is the size of the nucleus (like the size of a grape)

d₁: is the distance between electrons and nucleus of example 1 = 1 mile

s₂: is the average diameter of the nucleus  = 10⁻¹³ cm

d₂: is the average distance between electrons and nucleus of example 2 = 10⁻⁸ cm

Assuming that the diameter of a grape is 3 cm (in a spherical way), the ratio of the <u>first example</u> is (eq 1):

r_{1} = \frac{3 cm}{1 mi*\frac{160934 cm}{1 mi}} = 1.86 \cdot 10^{-5}

Now, the ratio of the <u>second example</u> is (eq 2):

r_{2} = \frac{10^{-13} cm}{10^{-8} cm} = 1.00 \cdot 10^{-5}              

Since r₁ and r₂ are in the same order of magnitude (10⁻⁵), we can conclude that the given claim is reasonably accurate.      

You can learn more about the nucleus of an atom here: brainly.com/question/10658589?referrer=searchResults

I hope it helps you!                

3 0
3 years ago
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