3 years ago

Can someone help me

Chemistry

1 answer:

swat323 years ago

6 0

Answer:

the third option

Explanation:

after you choose that answer don't check if it's correct

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1Table salt is a compound made of sodium and chlorine

Leviafan [203]

Answer:

This question is to vague. PS: what are you talking about?

Explanation:

This question is to vague. PS: what are you talking about?

6 0

1 year ago

What is the mass of 3.75 moles of NaCl

sasho [114]

M (NaCl) = n × M = 3.75 × 58.5 =
219.375 g

M (NaCl) = 23 + 35.5 = 58.5 g/mol

7 0

3 years ago

Read 2 more answers

How many atoms of N are in 0.82 g of NaNO3? ( molar conversion)

VMariaS [17]

The number of atoms N = 5.8 x 10²¹

<h3>Further explanation</h3>

A mole is a unit of many particles (atoms, molecules, ions) where 1 mole is the number of particles contained in a substance that is the same amount as many atoms in 12 gr C-12

1 mole = 6.02.10²³ particles

mass of N in 0.82 g of NaNO₃ (MW NaNO₃: 85 g/mol) :

$\tt mass~N=\dfrac{Ar~N}{MW~NaNO_3}\times mass~NaNO_3\\\\mass~N=\dfrac{14}{85}\times 0.82\\\\mass~N=0.135~g$

moles of N :

$\tt mol=\dfrac{mass}{Ar}\\\\mol=\dfrac{0.135}{14}=0.0096$

The number of atoms N :

$\tt N=n\times No\\\\N=0.0096\times 6.02\times 10^{23}\\\\N=5.8\times 10^{21}~atoms$

4 0

3 years ago

Which generates waves that are capable of traveling through a vacuum?

CaHeK987 [17]

Answer:

Light bulbs

Explanation:

light waves are electromagnetic waves which can travel through a vacuum

7 0

3 years ago

Which of the following is an example of good data?

Lady bird [3.3K]

Answer:

(2) Student A scored 15 points higher than student B

Explanation:

Because they said 15 points higher instead of their grades are better (The same thing 4 does.

6 0

3 years ago