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4 years ago

Which of the following bonds is most popular? C-C,C-N,C-O,C-H

Chemistry

1 answer:

Akimi4 [234]4 years ago

4 0

The answer is C-O

It is popular Because of Carbon Dioxide CO2

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When 5.467 grams of compound z are burned in excess oxygen, 15.02 grams of co2 and 2.458 grams of h2o are produced. determine it

Vera_Pavlovna [14]

Given the mass of CO2 =15.02 g

Moles of $CO_{2}$ = $15.02 gCO_{2} *\frac{1 molCO_{2} }{44.01 gCO_{2} } =0.341 mol CO_{2}$

Mass of H2O = 2.458 g

Moles of $H_{2}O$ = $2.458 g H_{2}O*\frac{1molH_{2}O }{18.02g H_{2}O } =0.136molH_{2}O$

Moles of C = $0.341 mol CO_{2}*\frac{1 molC}{1 molCO_{2} } =0.341molC$

Moles of H = $0.136 mol H_{2}O * \frac{2 mol H}{1 mol H_{2}O } =0.272 mol H$

Mass of C in the sample = $0.341 mol C*\frac{12.01g C}{1 mol C} = 4.095 g C$

Mass of H = $0.272 mol H *\frac{1.01 g H}{1 molH}$ =0.275 gH

Mass of O in the sample = 5.467 g - (4.095 g +0.275 g) = 1.097 g O

Moles of O = $1.097 g O * \frac{1 molO}{16 g O} =0.0686 mol O$

Simplest mole ratios of the elements in the compound:

$Cx_{\frac{0.341mol}{0.0686mol}} H_{\frac{0.272mol}{0.0686mol} }O_{\frac{0.0686mol}{0.0686mol} }$

Therefore the empirical formula of the compound is $C_{5}H_{4}O$

7 0

3 years ago

A potassium bromide solution is 8.34% potassium bromide by mass and its density is 1.03 g/ml. what mass of potassium bromide is

jenyasd209 [6]

Answer:- 3.84 grams

Solution:- Volume of the sample is 44.8 mL and the density is 1.03 gram per mL.

From the density and volume we calculate the mass as:

mass = volume*density

$44.8mL(\frac{1.03g}{mL})$

= 46.1 g

From given info, potassium bromide solution is 8.34% potassium bromide by mass. It means if we have 100 grams of the solution then 8.34 grams of potassium bromide is present in. We need to calculate how many grams of potassium bromide are present in 46.1 grams of the solution.

The calculations could easily be done using dimensional analysis as:

$46.1gSolution(\frac{8.34gKBr}{100gSolution})$

= 3.84 g KBr

Hence, 3.84 grams of KBr are present in 44.8 mL of the solution.

8 0

3 years ago

When a -COOH group replaces a hydrogen in a hydrocarbon the result is a/an ____.

jonny [76]

Carboxylic acid...........

7 0

3 years ago

How many acidic H+ ion is given by H3BO3 in aqueous solution?? ...?

notka56 [123]

Boric acid, H3BO3, in aqueous solution would only give out one H+ ion. As it is also produce OH ion and by hydrolysis it produces one proton. <span>All the boron compounds (BX3) are having only 6 valence electrons in it and should follow the octet rule by taking another electron.</span>

B(OH)3 + 2 H2O → B(OH)4− + H3O

7 0

3 years ago

To make the future development more eco-friendly and decrease water pollution from run-off, choose one of the following recommen

ELEN [110]

Answer:

construct using only recycled materials ^^

Explanation:

5 0

3 years ago