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3 years ago

What functional group consists of a carbon atom double-bonded to an oxygen atom?

Chemistry

2 answers:

DaniilM [7]3 years ago

7 0

Answer:

The answer to your question is: letter B.

Explanation:

Carbon atom double-bonded to an oxygen atom C= O,

a) Carbohydrate group this group does not exist

b)Carbonyl group This option is right, carbonyl group is C=O

c) Hydroxyl group This option is incorrect, hydroxyl group is OH, very different from C=O

d) Ketone group Ketone group does not exist, ketones have the same functional group as aldehydes (C=O)

Aloiza [94]3 years ago

5 0

Answer:

Carbonyl group

Explanation:

A carbonyl group is a functional group composed of a carbon atom double-bonded to an oxygen atom (presented as C ═ O). Ketones and aldehydes are examples of simple compounds that contain a carbonyl group.

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An infectious disease is _____.

e-lub [12.9K]

Answer: caused by organismis

Explanation:

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3 years ago

How many atoms are in 17.0 moles of Pb?

Oksanka [162]

No. of atoms=mols*avagadros no.
N=n*No
N=17 * 6.022 *10^23
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8 0

3 years ago

Be sure to answer all parts. one of the most important industrial sources of ethanol is the reaction of steam with ethene derive

lions [1.4K]

Answer: 2.17x10⁻³ atm

Explanation:

First, we must write the balanced chemical equation for the process:

C₂H₄(g) + H₂O(g) ⇌ C₂H₅OH(g)

The chemical reactions that occur in a closed container can reach a state of chemical equilibrium that is characterized because the concentrations of the reactants and products remain constant over time. The equilibrium constant of a chemical reaction is the value of its reaction quotient in chemical equilibrium.

The equilibrium constant (K) is expressed as the ratio between the molar concentrations (mol/L) of reactants and products. Its value in a chemical reaction depends on the temperature, so it must always be specified.

We will use the the equilibrium constant Kc of the reaction to calculate partial pressure of ethene. The constant Kc for the above reaction is,

Kc = $\frac{[C_{2} H_{5}OH]}{[H_{2}O][C_{2} H_{4}]}$

According to the law of ideal gases,

PV = nRT

where P, V, n and T are the pressure, volume, moles and temperature of the gas in question while R is the gas constant (0.082057 atm L / mol K) .

We can use the ideal gas law to determine the molar concentrations ([x] = n / V) from the gas pressures of ethanol and water, assuming that all gases involved behave as ideal gases. In this way,

PV = nRT → P = (n/V) RT → P = [x] RT → [x] = P / RT

So,

$[C_{2} H_{5}OH] = \frac{200 atm}{0.082057 \frac{atm L}{mol K} x 600 K } = 4.06 \frac{mol}{L}$

$[H_{2}O] = \frac{400 atm}{0.082057 \frac{atm L}{mol K} x 600 K } = 8.12 \frac{mol}{L}$

So, the molar concentration of ethene (C₂H₄) will be,

$[C_{2} H_{4}] = \frac{[C_{2} H_{5}OH]}{[H_{2}O] x Kc} = \frac{4.06 \frac{mol}{L} }{8.12 \frac{mol}{L}x9.00 x 10^{3} \frac{L}{mol} } = 5.56 x 10^{-5}\frac{mol}{L}$

Then, according to the law of ideal gases,

$P_{C_{2} H_{4}} = [C_{2} H_{4}]RT = 5.56 x 10^{-5} \frac{mol}{L} x 0.082057 \frac{atm L}{mol K} x 600 K = 2.17x10^{-3} atm$

So, when the partial pressure of ethanol is 200 atm and the partial pressure of water is 400 atm, the partial pressure of ethene at 600 K is 2.17x10⁻³ atm.

7 0

3 years ago

Help me with number 19 and 20 please

Doss [256]

19) it's not balanced because when adding h2 and o2 u get h2o2 not h2o
20) I'm not sure

7 0

3 years ago

Is a 1.4% NaCl solution hypertonic, isotonic, or hypertonic

dusya [7]

Answer:

1.4% NaCl solution is Hypertonic

Explanation:

A hypertonic solution is type of solution that has a greater concentration of solutes (substance given in a solution) on the outside of a cell when compared with the inside of a cell.

Any solution of sodium chloride (NaCl) in water with a concentration of NaCl higher than that found in physiological saline (0.9%) is considered to be hypertonic

6 0

3 years ago