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3 years ago

The element with the most stable nucleus and smallest mass per particle is

Chemistry

1 answer:

Margaret [11]3 years ago

4 0

"18) the element with the most stable nucleus and smallest mass per particle is:A) uranium.B)argon C) helium."

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Explain in your own words how DDT moved through the environment starting with spraying the farm crops

S_A_V [24]

Answer:

here and a cylinder have the same radius and height. The volume of the cylinder is .

What is the volume of the sphere?

Mark this and

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3 years ago

Calculate the no. of each atoms presents in 10 grams of calcium carbonate.

raketka [301]

Molar Mass of Calcium carbonate:-

$\\ \sf\longmapsto CaCO_3$

$\\ \sf\longmapsto 40u+12u+3(16u)$

$\\ \sf\longmapsto 52u+48u$

$\\ \sf\longmapsto 100u$

$\\ \sf\longmapsto 100g/mol$

Given Mass=10g

$\boxed{\sf No\:of\;moles=\dfrac{Given\:Mass}{Molar\:Mass}}$

$\\ \sf\longmapsto No\:of\;moles=\dfrac{10}{100}$

$\\ \sf\longmapsto No\:of\:moles=0.1mol$

Now

$\boxed{\sf No\:of\:molecules=No\;of\:moles\times Avagadro\: No}$

$\\ \sf\longmapsto 0.1\times 6.023\times 10^{23}$

$\\ \sf\longmapsto 6.023\times 10^{22}molecules$

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2 years ago

Which of the following units is an SI base unit?

Kisachek [45]

Answer:

Explanation:

kilogram√

m³×

cm×

l×

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2 years ago

Jon is running for city council and wants to campaign on human development goals for his community. Which issue should he use? A

kotegsom [21]

Answer:

E. better schools

Explanation:

This contributes the most to human development in his community because it provides children with more resources and better opportunities than a sub-par education system. If a community is able to better their school system, they will begin to see a lot of positive changes in their area.

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3 years ago

Read 2 more answers

Solid to Gas

miskamm [114]

Answer:

c. c. c c c c c cçcc. ccccccccc

Explanation:

ccc cc

7 0

2 years ago