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2 years ago

Which of the following functional groups comprises a carbon atom bonded to a hydroxyl group?

Chemistry

2 answers:

leva [86]2 years ago

8 0

B. alcohol

Hydroxyl group is an -OH branch

so,

R - OH is alcohol

sammy [17]2 years ago

7 0

Answer:

The correct option is: B. alcohol

Explanation:

A. ester (R-COOR'): In this functional group, the carbon atom forms a single bond with an alkoxy group and a double-bond with an oxygen atom.

B. alcohol (R-COH): In this functional group, the carbon atom is bonded to a hydroxyl group.

C. thiol (R-SH): In this functional group, the carbon atom is bonded to a thiol group.

D. carbonyl (R-COR'): In this functional group, the carbon atom forms a double-bond with an oxygen atom.

Therefore, alcohols are the class of organic molecules in which a carbon atom is bonded to a hydroxyl functional group.

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Which scientist invented the first simple Microscope ?

Vinvika [58]

Answer:

D. Leeuwenhoek

Explanation:

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3 years ago

2NBr3 + 3NaOH = N2 +3NaBr + 3HOBr

bija089 [108]

The theoretical proportion is given by the balanced chemical equation:

2 mol NBr / 3 mol Na OH

Then x mol NaOH / 40 mol NBr3 = 3mol NaOH/2 mol NBr3

Solve for x, x = 40 * 3/2 = 60 mol NaOH.

Given that there are 48 mol NaOH (less than 60) this is the limitant reactant and the other is the excess reactant.

Answer: NBr3..

6 0

2 years ago

Read 2 more answers

The following characteristics describe which type of mixture, homogeneous or heterogeneous? The substance is mixed uniformly thr

alexira [117]

The correct answer to this question is letter "A. homogeneous mixture." The following characteristics describe the type of mixture, which is a homogeneous mixture. The substance is mixed uniformly throughout and each part of the substance contains the same ratio of materials with the same properties

3 0

3 years ago

What is the theoretical yield of Calcium if we begin with 12.6 grams of Aluminium?

AlladinOne [14]

The question is incomplete, here is the complete question:

The given chemical reaction is:

$2Al+3Cu(NO_3)_2\rightarrow 3Cu+2Al(NO_3)_3$

What is the theoretical yield of Calcium if we begin with 12.6 grams of Aluminium?

Answer: The theoretical yield of copper is 44.48 grams

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

Given mass of aluminium = 12.6 g

Molar mass of aluminium = 27 g/mol

Putting values in equation 1, we get:

$\text{Moles of aluminium}=\frac{12.6g}{27g/mol}=0.467mol$

The given chemical equation follows:

$2Al+3Cu(NO_3)_2\rightarrow 3Cu+2Al(NO_3)_3$

By Stoichiometry of the reaction:

2 moles of aluminium produces 3 moles of copper

So, 0.467 moles of aluminium will produce = $\frac{3}{2}\times 0.467=0.7005mol$ of copper

Now, calculating the mass of copper from equation 1, we get:

Molar mass of copper = 63.5 g/mol

Moles of copper = 0.7005 moles

Putting values in equation 1, we get:

$0.7005mol=\frac{\text{Mass of copper}}{63.5g/mol}\\\\\text{Mass of copper}=(0.7005mol\times 63.5g/mol)=44.48g$

Hence, the theoretical yield of copper is 44.48 grams

4 0

3 years ago

Please help me to answer this question. i have to submit tomorrow.

ratelena [41]

Answer:

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

4 0

3 years ago