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Verizon [17]
3 years ago
13

How many moles of sodium (Na) are there in a sample of 5.87 x 1024 atoms of sodium?

Chemistry
1 answer:
Leno4ka [110]3 years ago
6 0
9.74x 2351 that's the answer
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The nucleus of an isotope of sulfur contains 34 neutrons. what is the atomic number of this isotope?
Flauer [41]
The atomic number of an element never changes no matter how many neutrons they have so Sulfur would just have an atomic number of 16 like normal.
8 0
3 years ago
Write the balanced chemical equation between H2SO4H2SO4 and KOHKOH in aqueous solution. This is called a neutralization reaction
const2013 [10]

Answer:

0.185M sulfuric acid

Explanation:

Based on the reaction:

H₂SO₄ + 2KOH → K₂SO₄ + 2H₂O

<em>1 mole of sulfuric acid reacts with 2 moles of KOH</em>

Initial moles of H₂SO₄ and KOH are:

H₂SO₄: 0.750L ₓ (0.470mol / L) = <em>0.3525 moles of H₂SO₄</em>

KOH: 0.700L ₓ (0.240mol / L) = <em>0.168 moles of KOH</em>

The moles of sulfuric acis that react with KOH are:

0.168mol KOH ₓ (1 mole H₂SO₄ / 2 moles KOH) = 0.0840 moles of sulfuric acid.

Thus, moles that remain are:

0.3525moles - 0.0840 moles = <em>0.2685 moles of sulfuric acid remains</em>

As total volume is 0.700L + 0.750L = 1.450L, concentration is:

0.2685mol / 1.450L = <em>0.185M sulfuric acid</em>

8 0
2 years ago
1 question you still have about the concept
allochka39001 [22]

Answer:

what concept?

Explanation:

5 0
2 years ago
Read 2 more answers
NaCl+F2=NaF+Cl2 balancing chemical equations
salantis [7]

Answer:

2NaCl+1F2=2NaF+1Cl2

Explanation:

7 0
3 years ago
Fats help your brain and nervous system develop correctly.<br> True<br> False
Fantom [35]

Answer:

Yes

Explanation:

the amino acids in proteins and the fatty acids in fat replace the amino and fatty acids in your brain to help you function and develop correctly.

6 0
3 years ago
Read 2 more answers
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