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STatiana [176]
2 years ago
15

Please answer correctly !!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!

Chemistry
1 answer:
Ilya [14]2 years ago
6 0

Answer:

C

Explanation:

Hope this helps Mrs. or Sir

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Complete combustion of 8.10 g of a hydrocarbon produced 25.9 g of CO2 and 9.27 g of H2O. What is the empirical formula for the h
balu736 [363]

CxHy     +  O2    -->    x CO2     +    y/2  H2O

 

Find the moles of CO2 :     18.9g  /  44 g/mol   =    .430 mol CO2   = .430 mol of C in compound

Find the moles of H2O:      5.79g / 18 g/mol     =     .322 mol H2O   = .166 mol of H in compound

 

Find the mass of C and H in the compound:

                             .430mol  x 12  =  5.16 g C

                              .166mol  x 1g   = .166g H   

 

When you add these up they indicate a mass of 5.33 g for the compound, not 5.80g as you stated in the problem.

Therefore it is likely that either the mass of the CO2 or the mass of H20 produced is incorrect (most likely a typo).

In any event, to find the formula, you would take the moles of C and H and convert to a whole number ratio (this is usually done by dividing both of them by the smaller value).

8 0
3 years ago
How much smaller is an electron than a proton​
meriva

Answer:

An electron is around 1800 times smaller than a proton

Explanation:

3 0
3 years ago
Read 2 more answers
What is the reduction half-reaction for the reaction of zinc with hydrochloric acid?
german
2HCl (aq) + Zn²⁺   ⇒  ZnCl₂  + 2H⁺         Total Reaction 
    
Leo goes Ger (Lose electron oxidize, Gain electron reduction)

Zn²⁺ + 2e⁻  ⇒ Zn     Oxidation half-reaction 

2H ⇒ 2H⁺ + 2e⁻       Reduction half-reaction                      
6 0
3 years ago
Heating a carboxylic acid with a primary amine forms water along with what organic product? OA) A secondary amide OB) A primary
Bezzdna [24]

Answer:

A) secondary amide

Explanation:

When carboxylic acid reacts with a primary amine, a condensation reaction takes place with the elimination of a water molecule .

For example, ethanol reacts with methylamine which is a primary amine gives N-Methylacetamide and a water molecule as:

CH_3COOH+NH_2CH_3\rightarrow CH_3-CONH-CH_3+H_2O

The bond formed which is

  O

   ||

-- C  ---NH ---

is known as secondary amide group as only one hydrogen is attached to nitrogen atom in the amide bond.

5 0
3 years ago
Use the periodic table to determine the molar mass of each of the following elements. Use the correct number of significant figu
Andrews [41]

Answer:

Potassium (K):

⇒ 39.10 g/mol

Osmium (Os):

⇒ 190.23 g/mol

Manganese (Mn):

⇒ 54.94 g/mol

Explanation:

I Just Did The Assignment

7 0
3 years ago
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