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frutty [35]
3 years ago
9

PLEASE HELPPP!!!! THANK YOUUU!!!!

Chemistry
1 answer:
Andre45 [30]3 years ago
7 0

You have the correct answer

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How many more electrons are there in the last energy level of phosphorus, atomic
pav-90 [236]

sorry but I need some three point so that's why I didn't

3 0
3 years ago
Which of the following is/are considered alcohols?
Paladinen [302]

Answer: THE ANSWER IS D

Explanation:

an alcohol is a hydrocarbon chain with an hydroxyl group (OH)

A, B, AND C ARE ALL ALCOHOLS, SO THE ANSWER IS D

6 0
3 years ago
Acetic acid (CH3CO2H) is the principal component in the vinegar. What is the molarity of an acetic acid solution if a titration
Alexxx [7]

Answer : The molarity of an acetic acid solution is, 0.0338 M

Explanation :

Formula used :

M_1V_1=M_2V_2

where,

M_1\text{ and }V_1 are the molarity and volume of acetic acid.

M_2\text{ and }V_2 are the molarity and volume of NaOH.

We are given:

M_1=?\\V_1=50.0mL\\M_2=0.0567M\\V_2=29.80mL

Putting values in above equation, we get:

M_1\times 50.0mL=0.0567M\times 29.80mL\\\\M_1=0.0338M

Hence, the molarity of an acetic acid solution is, 0.0338 M

4 0
3 years ago
Which of the following is an indication that a substance has undergone a chemical change?
Anna [14]

Physical change is a change in size, shape, state or solution. You still have the same material.

Chemical change forms a new substance. It can be seen by a color change, odor change, gas formation, precipitate formation or large change in energy.

Hope it helps
4 0
3 years ago
Read 2 more answers
A solution is made by dissolving 15.5 grams of glucose (C6H12O6) in 245 grams of water. What is the freezing point depression of
sergij07 [2.7K]
From the equation; ΔTf = Kf × m
Where, Kf for water = 1.853 K kg/mole; m is the molarity = number of solute/amount of solvent in kg.
Glucose is the solute whose molecular mass is 180 g/mole and water is the solvent. 
Moles of solute = 15.5/180 = 0.0861 moles
Amount of solvent in kg = 245/1000 = 0.245 Kg
Therefore; molarity = 0.0861/0.245 = 0.3515 moles/Kg
Therefore; ΔTf = 1.853 × 0.3515 = 0.6513 K
Hence; the depression in freezing point is 0.6513 
The freezing point of solution will therefore be;
= 273 - 0.6513 = 272.3487 K

7 0
3 years ago
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