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creativ13 [48]
3 years ago
12

A hydrocarbon, containing only C and H, can react with excess oxygen gas to produce carbon dioxide and water. The result of the

complete reaction of an unknown hydrocarbon with formula CxHy is shown in the table. What is the formula of the hydrocarbon?
Chemistry
2 answers:
Tcecarenko [31]3 years ago
5 0
I believe the answer you are looking for would be HC

Sergeeva-Olga [200]3 years ago
5 0
The formula is Cxy+O2
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How many eight-packs of water would you need if 32 people
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What is the pH of a solution with a concentration of 1.8 × 10-4 molar H3O+?
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PH is defined as the negative log of Hydrogen ion concentration. Mathematically we can write this as:

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8 0
3 years ago
Sterling silver is 92.5% silver and 7.5% copper. Its density is 10.25 g/cm3. A sterling silver pendant is added to a graduated c
Mariulka [41]

From the information given:

  • The volume of the graduated cylinder = 50.0 mL
  • when a sterling silver pendant is added, the volume increases to = 61.3 mL

∴

The volume of the sterling silver pendant is:

= 61.3 mL - 50.0 mL

= 11.3 mL

Since, 1 mL = 1cm³

Then;

11.3 mL = 11.3 cm³

  • the density of the sterling silver = 10.25 g/cm³

Using the relation for Density; i.e.

\mathbf{Density = \dfrac{mass}{volume}}

\mathbf{10.25 \ g/cm^3= \dfrac{mass}{11.3  \ cm^3}}

mass = 10.25 g/cm³× 11.3 cm³

mass of the sterling silver = 115.825 grams

Recall that sterling silver has:

  • 92.5% silver and;
  • 7.5% copper

∴

The mass of the copper contained in the sterling silver pendant can be calculated as:

\mathbf{= \dfrac{115.825  \ g \times 7.5}{100}}

= 8.687 grams

Therefore, we can conclude that the mass of the copper contained in the sterling silver pendant is 8.687 grams

Learn more about the relation between Density, Mass, and Volume here:

brainly.com/question/24386693?referrer=searchResults

4 0
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