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3 years ago

What is a huge organic molecule composed of many smaller molecules called?

Chemistry

1 answer:

photoshop1234 [79]3 years ago

7 0

Answer:

Macromolecules. A very large organic molecule composed of many smaller molecules, 1)Carbohydrates, 2)proteins, 3)lipids, 4)nucleic acids. Three of the four classes of macromolecules that are polymers. 1.Carbohydrates.

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A neutral atom with the electron configuration 2-7 would most likely form a bond with an atom having the configuration

Triss [41]

Answer:

1s2 2s2

Explanation:

7 0

3 years ago

A) The average molecular speed in a sample of Ar gas at a certain temperature is 391 m/s. The average molecular speed in a sampl

diamong [38]

Answer:

For A: The average molecular speed of Ne gas is 553 m/s at the same temperature.

For B: The rate of effusion of $SO_2$ gas is $1.006\times 10^{-3}mol/hr$

Explanation:

For A:

The average molecular speed of the gas is calculated by using the formula:

$V_{gas}=\sqrt{\frac{8RT}{\pi M}}$

$V_{gas}\propto \sqrt{\frac{1}{M}}$

where, M is the molar mass of gas

Forming an equation for the two gases:

$\frac{V_{Ar}}{V_{Ne}}=\sqrt{\frac{M_{Ne}}{M_{Ar}}}$ .....(1)

Given values:

$V_{Ar}=391m/s\\M_{Ar}=40g/mol\\M_{Ne}=20g/mol$

Plugging values in equation 1:

$\frac{391m/s}{V_{Ne}}=\sqrt{\frac{20}{40}}\\\\V_{Ne}=391\times \sqrt{2}=553m/s$

Hence, the average molecular speed of Ne gas is 553 m/s at the same temperature.

For B:

Graham's law states that the rate of diffusion of a gas is inversely proportional to the square root of the molar mass of the gas. The equation for this follows:

$Rate\propto \frac{1}{\sqrt{M}}$

Where, M is the molar mass of the gas

Forming an equation for the two gases:

$\frac{Rate_{SO_2}}{Rate_{Xe}}=\sqrt{\frac{M_{Xe}}{M_{SO_2}}}$ .....(2)

Given values:

$Rate_{Xe}=7.03\times 10^{-4}mol/hr\\M_{Xe}=131g/mol\\M_{SO_2}=64g/mol$

Plugging values in equation 2:

$\frac{Rate_{SO_2}}{7.03\times 10^{-4}}=\sqrt{\frac{131}{64}}\\\\Rate_{SO_2}=7.03\times 10^{-4}\times \sqrt{\frac{131}{64}}\\\\Rate_{SO_2}=1.006\times 10^{-3}mol/hr$

Hence, the rate of effusion of $SO_2$ gas is $1.006\times 10^{-3}mol/hr$

8 0

3 years ago

NH,F+ _AICI, __NH,CI + __A!F,

mart [117]

Explanation:

NH₄F+ AICI₃, → NH₄CI + AlF₃

NH,F: in ionic form

NH₄⁺ + F⁻ = NH₄F

AICI in ionic form:

Al³⁺ + Cl⁻ = AlCl₃

NH Cl in ionic form:

NH₄⁺ + Cl⁻ = NH₄Cl

Al F in ionic form:

Al³⁺ + F⁻ = AlF₃

NH₄F+ AICI₃, → NH₄CI + AlF₃

Now we have to balance the equation with respect to the atoms:

aNH₄F+ bAICI₃, → cNH₄CI + dAlF₃

for N: a = c

H: 4a = 4c

F: a = 3d

Cl: 3b = c

let a = 1

c = 1

b = $\frac{1}{3}$

d = $\frac{1}{3}$

Therefore we can imply that:

a = 3, b = 1 , c = 3 and d = 1 if we multiply through by 3

3NH₄F+ AICI₃, → 3NH₄CI + AlF₃

Learn more:

Chemical equation brainly.com/question/2924195

#learnwithBrainly

8 0

3 years ago

Where does oxidation occur in an electrochemical cell?

AlladinOne [14]

Option No. 1 at the cathode in both an electrolytic cell and a voltaic cell

Negative ion arrives at the anode, attracted by electrostatic forces, where they lose electrons. Loss of electrons is defined as oxidation.

The reverse process occur at the negative electrode, where positive ions pick up electrons. They are reduced.

8 0

3 years ago

Read 2 more answers

Y’all answer as many as u can they just need to be correct thx!!!!

Slav-nsk [51]

Answer:

10. Embryology is the branch of biology and medicine concerned with the study of embryos and their development.

11. I think the answer is, Both humans and whale embryos have a tail and a backbone (I'm not sure).

12. Basilosaurid, any member of the family Basilosauridae, an early group of whales that lived from the middle Eocene to the late Oligocene Epoch (about 41 million to 23 million years ago).

13. Protocetids had long snouts, large eyes, and their nasal opening was farther caudally than in earlier archaeocetes.

14. Two ways we know that Maiacetus was a whale re:

1) Their skeletons have all been found among fossils of sea-creatures which suggests they lived in the sea.

2) Their hip bones were strong enough to walk on land, but their short legs combined with long flat fingers and toes suggest they would have had difficulty walking.

15. The name Maiacetus means Mother Whale. Maiacetus is significant because of how well the skeletons were preserved.

Hope this helps! :D

4 0

3 years ago