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3 years ago

Identify the functional groups present in each molecule.

Chemistry

1 answer:

Colt1911 [192]3 years ago

5 0

Answer:

Carbon 3 is double bonded to an oxygen and attached to carbon 2 and carbon 4. :

Answer: Carbonyl group ( Ketone or aldehyde)

Carbon 17 is attached to an oxygen, which is attached to a hydrogen. :

Answer: Carboxyl group (Carboxylic acid)

A central carbon is attached to an amine, two hydrogens, and a carbon that is double bonded to an oxygen and single bonded to an oxygen attached to a hydrogen. :

Answer: Amide group

An amide group contains both amine and carboxyl

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Can someone help me out with this thanks!

Mama L [17]

Answer:

a) Hydrogen and Fluorine

b) Lithium and Oxygen

c) Potassium and Phosphorus

d) Nickel and Oxygen

e) Mercury and Chlorine

Explanation:

The capital letters in the compounds represent a single element, while some elements have one capital letter and one small letter after it.

a) H & F

b) Li & O

c) K & P

d) Ni & O

e) Hg & Cl

6 0

3 years ago

When of a certain molecular compound X are dissolved in of benzene , the freezing point of the solution is measured to be . Calc

puteri [66]

The question is incomplete. Here is the complete question.

When 2.10 g of a certain molecular compound X are dissolved in 65.0 g of benzene (C₆H₆), the freezing point of the solution is measured to be 3.5°C. Calculate the molar mass of X. If you need any additional information on benzene, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to 2 significant digits.

Answer: MM = 47.30 g/mol.

Explanation: There is a relationship between freezing point depression and molality. With this last one, is possible to calculate molar mass or molar weight of a compound.

Freezing Point Depression occurs when a solute is added to a solvent: the freezing point of the solvent decreases when a non-volatile solute is incremented.

Molality or molal concentration is a quantity of solute dissolved in a certain mass, in kg, of solvent. Its symbol is m and it's defined as

$m=\frac{moles(solute)}{kg(solvent)}$

Freezing point depression and molal are related as the following:

$\Delta T_{f}=K_{f}.m$

where

$\Delta T_{f}$ is freezing point depression of solution

$K_{f}$ is molal freezing point depression constant

m is molality

Now, to determine molar mass, first, find molality of the mixture:

$\Delta T_{f}=K_{f}.m$

$m=\frac{\Delta T_{f}}{K_{f}}$

For benzene, constant is 5.12°C/molal. Then

$m=\frac{3.5}{5.12}$

m = 0.683 molal

Second, knowing the relationship between molal and moles of solute, determine the last one:

$m=\frac{moles(solute)}{kg(solvent)}$

$mol(solute)=m.kg(solvent)$

mol(solute) = 0.683(0.065)

mol(solute) = 0.044 mol

The definition for Molar mass is the mass in grams of 1 mol of substance:

$n(moles)=\frac{m(g)}{MM(g/mol)}$

$MM=\frac{m}{n}$

In the mixture, there are 0.044 moles of X, so its molecular mass is

$MM=\frac{2.1}{0.044}$

MM = 47.30 g/mol

The molecular compound X has molecular mass of 47.30 g/mol.

7 0

3 years ago

Would it be possible for one mole of a molecule to contain less than 6.02*10^23 atoms of one of its component elements?

julia-pushkina [17]

Answer:

Explanation:

No, because the number of particles per mole is measured by the Avogadro Number. This means that one mole of any substance is equal to 6.022 × 10²³.

8 0

3 years ago

While visiting the Grand Canyon, you observe the exposed layers of rock on the valley. What natural process most likely caused t

melamori03 [73]

Erosion caused the grand canyon to form

4 0

3 years ago

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If an acid has a pH of 2, what is its [H^ + ] ? Show work

Rudik [331]

Answer:

The concepts of pH and acid strength are only loosely related to each other. You can get to a pH of 2 with either a fairly concentrated solution of a weak acid or a very dilute solution of a strong acid.

0.01 M strong acid (HCl, HNO 3 , HClO 4 , etc.) has a pH of 2.0

HNO 2 , nitrous acid, a fairly strongish weak acid, has a pKa of 3.39 (Ka = 4 x 10 −4 ). A 1 M solution of nitrous acid will have a pH of 1.7.

So you see, just knowing the pH (unless it’s significantly less than 1) doesn’t tell you whether the acid is strong or weak.

6 0

3 years ago

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