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3 years ago

A reaction produces 0.863 moles of H2O. How many molecules are produced?

Chemistry

2 answers:

Stolb23 [73]3 years ago

8 0

Number of molecules = moles x 6.02 x 10^23 = 0.863 x 6.02 x 10^23
= 5.19 x 10^23 molecules.

balu736 [363]3 years ago

4 0

To convert from moles to molecules, you multiply by Avogadro's constant.

0.863 moles H₂O * (6.022*10^23 molecules/1 mole) = 5.20*10^23 molecules H₂O

5.20*10^23 molecules of H₂O are produced.

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What substance is acting as the Brønsted-Lowry base in the forward reaction below? H2O + HCI ----> H3O+ CI-

yarga [219]

H2O is the Bronsted-Lowry base because it accepts the hydrogen ion to become H3O after the reaction is complete.

6 0

3 years ago

Question 4<br> Calculate the nlass of 7.1 x 1024 formula units of magnesium hydroxide, Mg(OH),.

faust18 [17]

its me again this is how you find the answer. note: i dont have the periodic table to see the exact atomic mass to find the molar mass however this is the answer:

so the actual formula is Mg(OH) with a 2 as a subscript because there are 2 Mg. so with Mg(OH)2 the Molar mass is 58.32g/mol. 58.32 g/mol x 7.1x1024 = 4.1x1026g

6 0

3 years ago

56.5 g of sodium nitrate is dissolved in water to make 627 g of solution . what is the percent sodium nitrate in the solution

Tamiku [17]

Answer:

9.01%

Explanation:

The following data were obtained from the question:

Mass of sodium nitrate, NaNO3 = 56.5g

Mass of solution = 627g

The percentage composition of sodium nitrate, NaNO3 in the solution can be obtained as follow:

Percentage composition of NaNO3 = Mass of NaNO3/mass of solution x 100

Percentage composition of NaNO3 = 56.5/627 x 100 = 9.01%

Therefore, the percentage composition of sodium nitrate, NaNO3 in the solution is 9.01%

8 0

3 years ago

Read 2 more answers

If the total population of Asian women was 5000in the 2008 how many females suffered a stroke?

Finger [1]

Answer:

Hi there!

I believe you are missing an attachment to this question however

I strongly believe that the answer you are looking for is 85.

Explanation:

If you provide the graph, the rate of strokes in Asian women will be 17 per 1,000 women so all you have to do is multiply 17 by 5 and you get 85

4 0

3 years ago

What mass of solute should you measure out in order to make 1,000 mL of a 0.3 M solution of magnesium phosphate Mg3(PO4)2?

vivado [14]

Hey there !

Molecular Weight: 262.86 g/mol

Volume in liters : 1,000 mL => 1,000 / 1000 => 1 L

Number of moles of solution :

number of moles = volume x molarity

number of moles = 1 x 0.3 => 0.3 moles

Therefore:

1 mole Mg₃(PO₄)₂ ------------------- 262.86 g

0.3 moles ----------------------------- mass of Mg₃(PO₄)₂ ??

mass of Mg₃(PO₄)₂ = 0.3 x 262.86 / 1

mass of Mg(PO₄)₂ => 78.858 g

Hope this helps!

7 0

3 years ago