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MatroZZZ [7]
3 years ago
12

Determine if each of the following statements about chiral molecules is True or False and select the best answer from the dropdo

wn menus. All R stereocenters are dextrorotatory. Chiral centers in organic molecules will have 4 different groups attached to a carbon. A racemic mixture has an optical activity of 0. Normal linear amines can be chiral centers. Compound C has an optical activity of 0. If the R isomer of a molecule has an optical rotation of 25.7o then the S isomer of the molecule will have an optical rotation of -25.7o. A CN is higher priority than a CH2OH. All molecules with c
Chemistry
1 answer:
romanna [79]3 years ago
5 0
-32.45. G y y u u i i i i i.
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The boiling point elevation of an aqueous sucrose solution is found to be 0.39°C.
SVEN [57.7K]

Answer:

130.4 grams of sucrose, would be needed to dissolve in 500 g of water.

Explanation:

Colligative property of boiling point elevation:

ΔT = Kb . m . i

In this case, i = 1 (sucrose is non electrolytic)

ΔT = Kb . m

0.39°C = 0.512°C/m . m

0.39°C /0.512 m/°C = m

0.762 m (molality means that this moles, are in 1kg of solvent)

If in 1kg of solvent, we have 0.712 moles of sucrose, in 500 g, which is the half, we should have, the hallf of moles, 0.381 moles

Molar mass sucrose = 342.30 g/m

Molar mass . moles = mass

342.30 g/m . 0.381 m = 130.4 g

6 0
4 years ago
Where is the intersection of the position and time axes located on a position-versus-time graph?
Bad White [126]

it is located at the origin so A

hope this helped ^_^

5 0
3 years ago
The Law of Conservation of Mass states that ____
Vaselesa [24]
I will mark you brainlist please help

1) A ball is thrown with the speed of 10 m/s from the 1st stair. The height of each stair is 10cm and the width is 15 cm. on which stair the ball will fall
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3 years ago
The reactive properties or chemical behavior of an atom depend on the number of
Morgarella [4.7K]

Answer:

D

Explanation:

The chemical properties of an atom is majorly influenced by the number of electrons which are present in the valence shell of its atom. This number helps us to know if the atom is a metal , non-metal , metalloid, or a noble gas. Properties like electro-negativity and electro-positivity depends on the valence electrons. metals with fewer electrons in their valence shell, like sodium have strong electro-positivity, while non-metals which higher number of electrons in their outermost shell like chlorine have a high electronegativity

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3 years ago
Please help!!<br><br>Show the electronic configuration of magnesium atom​.
Galina-37 [17]

Explanation:

Magnesium has atomic number 12. It will be distributed in K, L, M shell in the following way:

K shell can accommodate a maximum of 2 electrons.

L shell can accommodate a maximum of 8 electrons and

M shell will accommodate 2 electrons

So the configuration becomes 2, 8,3

3 0
3 years ago
Read 2 more answers
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