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cestrela7 [59]
3 years ago
10

A Choose... convex concave  lens is used to converge light.

Chemistry
2 answers:
asambeis [7]3 years ago
4 0
Answer: A convex lens is used to converge ligtht.

Explanation:

A concave lens is a lens that is thicker on the ends than in the middle. As consequence of this, a concave lens diverges (separate) the rays of light. A concave lens is also called diverging lens.

A convex lens is is thicker in the middle than on the ends. As consequence of this, a convex lense converge the parallel rays that pass through it. A convex lens is also called converging lens.
goldfiish [28.3K]3 years ago
4 0
The answer would be :
A convex lens is used to converge ligtht.

A convex lens is is thicker in the middle than on the ends. As consequence of this it wl reflect light but as the object go near to the mirror, it would be inverted and virtual. So you eill expect an inverted image of you.
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The vapor pressure of water at 65oC is 187.54 mmHg. What is the vapor pressure of a ethylene glycol (CH2(OH)CH2(OH)) solution ma
Pavlova-9 [17]

Answer:

173.83 mmHg is the vapor pressure of a ethylene glycol solution.

Explanation:

Vapor pressure of water at 65 °C=p_o= 187.54 mmHg

Vapor pressure of the solution at 65 °C= p_s

The relative lowering of vapor pressure of solution in which non volatile solute is dissolved is equal to mole fraction of solute in the solution.

Mass of ethylene glycol = 22.37 g

Mass of water in a solution = 82.21 g

Moles of water=n_1=\frac{82.21 g}{18 g/mol}=4.5672 mol

Moles of ethylene glycol=n_2=\frac{22.37 g}{62.07 g/mol}=0.3603 mol

\frac{p_o-p_s}{p_o}=\frac{n_2}{n_1+n_2}

\frac{187.54 mmHg-p_s}{187.54 mmHg}=\frac{0.3603 mol}{0.3603 mol+4.5672 mol}

p_s=173.83 mmHg

173.83 mmHg is the vapor pressure of a ethylene glycol solution.

6 0
2 years ago
Match the part of the wave to its description.
Alex17521 [72]

Answer:

sgsgueiehéyegeysuegeteue2

6 0
2 years ago
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What is the name of this hydrocarbon? <br><br> hexane<br> heptane<br> octane<br> pentane
pav-90 [236]

I believe it is pentane..Try that!


Hope it helps, sorry if it doesn't but that's the answer I just choose for my unit test on edgnty.

5 0
3 years ago
Read 2 more answers
What are the moles of silver metal produced from 0.0999 mol of copper?
julia-pushkina [17]

Answer:

1234567i9812345678912121212121

6 0
2 years ago
es the molecule defective leading to sickle cell anemia. Predict whether the following hypothetical change would or would not ha
Pachacha [2.7K]
<h2><u>Full Question:</u></h2>

In hemoglobin, a single amino acid change at position 6 from Glu to Val has major consequences on hemoglobin structure that makes the molecule defective leading to sickle cell anemia. Predict whether the following hypothetical change would or would not have a major effect at position 6. Briefly explain (1-2 sentences). Glu to Leu Hint: Look at the structures of the R groups and consider their chemical properties

<h2><u>Answer:</u></h2>

The structure of the haemoglobin, hence the RBC won't be same as normal.

<h3><u>Explanation:</u></h3>

Both the leucine and glutamic acid are alpha amino acids which have an alpha carboxylic acid group and an alpha amino group. The variable in case of glutamic acid is propyl acid while the variable in case of leucine is isobutyl.

The glutamic acid is the normal amino acid of the 6th position of Beta chain of hemoglobin. Its an acid group, so can form bonds with another base inside the haemoglobin, or can form other hydrogen bonds. But the isobutyl group is an alkyl group. So it doesn't have that much effect in the recovering the structure, and sickle cell anemia prevails.

6 0
3 years ago
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