Tutorial queshers Set 1| Why does molecule become a chiral if has a Plane of symmetry even through it has stereocenter

Answers

Answer 1

Answer:

Answer:

Here's what I get.

Explanation:

Consider the molecule shown below.

It has two chiral centres, labelled R and S, and an internal mirror plane that makes the right and left halves of the molecule mirror images of each other.

If we pass a beam of plane-polarized light through the sample, the R portion of the molecule will rotate the light in a certain direction.

However, the S portion will rotate the light by the same amount in the opposite direction.

The two effects cancel each other, so the molecule has no net effect on plane-polarized light.

Even though the molecule has two chiral centres, it is achiral because it has an internal plane of symmetry.

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Help please Isabella was standing directly below a power line, and her compass failed to give an accurate reading.

How could she explain why her compass was not working?

A

A compass works with a magnetic field, and the electric current running through the lines above it would interfere with the magnetic field.

B

The compass works because of an electric field, and the electric current running through the lines above would interfere with the electric field.

C

The compass works because of a gravitational field, and the magnetic current running through the lines above would interfere with the gravitational field.

D

A compass works because of a magnetic field, and the magnetic current running through the power lines above it would interfere with the magnetic field below it.

Answers

a compass works with magnetic field the answer is d

How do vacuoles in the animal cell differ from those in the plant cell?

Answers

The main difference is that in a plant cell there is only one vacuole while in an an animal cell there are many. but the size is drastically different also.

Answer:

Major structural differences between a plant and an animal cell include: Plant cells have a cell wall, but animals cells do not. Cell walls provide support and give shape to plants. Plant cells have chloroplasts, but animal cells do not.

Explanation:

Is the following sentence true or false. very few minerals are compound

Answers

false very few minerals are a compound

Examples of a cell wall

Answers

✡ Answer: A example of this is a wall surrounding fungi (a cell wall)✡

- - Why?
Because this is a good example of a cell wall, and it is commonly used in most science lessons (in my school atleast)

✡Hope this helps✡

a gate protecting the house inside

How many moles are in 15 grams of carbon dioxide?

Answers

Answer:

There are 0.34 moles of CO2 in 15 grams of CO2

Explanation:

The SI base unit for amount of substance is the mole. 1 mole is equal to 1 mole CO2.

Molar mass of CO2 = Molar mass of Carbon + Molar mass of Oxygen multiplied by 2

Molar mass of carbon = 12 g/mol

Molar mass of oxygen= 16g/mol

Molar mass of CO2= 12g/mol + (16g/mol)2

= 12g/mol +32g/mol= 44g/mol

In other words, we can say that 1 mole of CO2 has a mass of 44gram

Number of moles of CO2 = mass of CO2 / molar mass of CO2

Mass of CO2= 15g/mol

Number of moles of CO2= 15gmol-1 / 44gmol-1

= 0.3409 moles

Hence, there are 0.34moles of CO2 present in 15 grams of CO2.

Answer: 0.34 moles

Explanation:

Vinegar is a solution of acetic acid. What is the molarity of the solution produced when 125g of acetic acid (C2H4O2) is dissolved in sufficient water to prepare 1.50L of solution?