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Ksenya-84 [330]
3 years ago
6

What is the empirical formula of a hypothetical compound that is 96%S and 4% H?​

Chemistry
1 answer:
Bess [88]3 years ago
8 0

Explanation:

Let the mass of the compound be 100g.

Mass of Sulfur = 96g.

=> Moles of Sulfur

= 96g / (32.07g/mol) ≈ 3

Mass of Hydrogen = 4g.

=> Moles of Hydrogen

= 4g / (1.008g/mol) ≈ 4

Mole ratio of Sulfur to Hydrogen = 3 : 4,

Empirical formula of compound = S3H4.

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Convert 7.60 x1021 molecules of CO to Liters.
Sergio [31]

you are given the number of moles, from the given formula you can get the molar mass which is 12.00g/mol + 16 g/mol =28 g/mol. using the formula n=m/Mr rearrange the formula and make m subject, you thn have m=nMr therefore 7.60x 1021 mol x 28g/mol= m

m = 217268.8 g, you will notice that mol cancel out each other leaving you with g.

now convert g to litres

1 litre is equal to 1000 grams therefore

217268.8g x 1l/1000g = 217,269 litres

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3 years ago
PLEASE HELP I'LL MARK BRAINLIEST
dem82 [27]

Answer:

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4 0
3 years ago
Milk of magnesia is often taken to reduce the discomfort associated with acid stomach or heartburn. The recommended dose is 1 te
Igoryamba

Answer:

8.61 mL of the HCl solution

Explanation:

The reaction that takes place is:

  • 2HCl + Mg(OH)₂ → MgCl₂ + 2H₂O

From the given mass of Mg(OH)₂, we can calculate <u>the moles of HCl that are neutralized</u>:

  • 4x10² mg = 400 mg = 0.400g
  • 0.400g Mg(OH)₂ ÷ 58.32g/1mol = 6.859*10⁻³ mol Mg(OH)₂
  • 6.859*10⁻³ mol Mg(OH)₂ * \frac{1molHCl}{1molMg(OH)_{2}} = 3.429x10⁻³ mol HCl

Finally, to calculate the volume of an HCl solution, we need both the moles and the concentration. We can <u>calculate the concentration using the pH value</u>:

  • pH = -log[H⁺]
  • 1.4 =  -log[H⁺]
  • 10^{-1.4} = [H⁺]
  • 0.0398 M = [H⁺] = [HCl]  *Because HCl is a strong acid*

Thus, the volume is:

  • 0.0398 M = 3.429x10⁻³mol HCl / Volume
  • Volume = 8.616x10⁻³ L = 8.62 mL

6 0
4 years ago
Read 2 more answers
Calculate the number of Calories present in a chocolate chip cookie that contains 19 g carbohydrate, 3 g protein, and 9 g fat.
agasfer [191]
Im unsure :( maybe try looking up a calorie calculator
5 0
3 years ago
All atoms of a given element have the same number of____
maksim [4K]
<h3>Answer:</h3>

Protons

<h3>Explanation:</h3>
  • An atom is the smallest particle of an element that can take part in a chemical reaction.
  • All atoms of the same element are similar in that they have the same number of protons.
  • Atoms of the same elements may have a different number of electrons or neutrons but will always have the same number of protons.
  • Atoms of the same elements with a different number of neutrons are known as isotopes.
  • When neutral atoms gain or lose electron(s) they form charged atoms known as ions.
3 0
4 years ago
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