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Marysya12 [62]
3 years ago
13

1. power utilizes moving water to generate electricity.

Chemistry
1 answer:
Marianna [84]3 years ago
8 0
Hydroelectric energy
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When 0.49 g of a molecular compound was dissolved in 20.00 g of cyclohexane, the freezing point of the solution was lowered by 3
IRISSAK [1]

Answer: The molecular mass of this compound is 131 g/mol

Explanation:

Depression in freezing point:

\Delta T_f=i\times k_f\times \frac{w_2\times 1000}{M_2\times w_1}

where,

\Delta T_f = depression in freezing point  = 3.9^oC

k_f = freezing point constant  = 20.8^0C/m

m = molality

i = Van't Hoff factor = 1 (for non-electrolyte)

w_2 = mass of solute = 0.49 g

w_1 = mass of solvent (cyclohexane) = 20.00 g

M_2 = molar mass of solute = ?

Now put all the given values in the above formula, we get:

(3.9)^oC=1\times (20.8^oC/m)\times \frac{(0.49g)\times 1000}{M_2\times (20.00g)}

M_2=131g/mol

Therefore, the molar mass of solute is 131 g/mol

7 0
3 years ago
What is the best reason for the difference in properties of LiCl and C6H14O?
Artist 52 [7]

Answer: Difference in properties of these two compounds are because one compound is covalent and the other one is ionic.

Explanation: LiCl is an inorganic compound having high electronegativity difference between the two elements and hence, is termed as an ionic compound.

C_6H_{14}O is a organic compound formed by the sharing of electrons between the elements, hence is termed as a covalent compound.

Hence, the properties are different because one of the compound is covalent and other is ionic.

4 0
3 years ago
Read 2 more answers
Which of the following has the largest mass of carbon per gram?
ella [17]

Answer:

ch3

Explanation:

5 0
3 years ago
Give the nuclear symbol for the isotope of phosphorus for which a=31? enter the nuclear symbol for the isotope (e.g., 42he).
Bogdan [553]
A = number of mass = 31 => number of protons + number of neutrons = 31

Phosphours, Z = atomic number = 15 = number of protons

Symbol of the element phosphorus = P

=> The symbol of the isotope is the symbol of the element, P, with the number of mass, 31, to the left, as a superscript, and the atomic number, 15, to the left, as a suscript.
8 0
3 years ago
Equal but opposite forces acting on an object results in what?
forsale [732]

Answer:

Action given and reaction taken

Also known as

Newton's third law of motion

Explanation:

An action will be done such as bouncing a ball on the wall

- You throw the ball (Action)

- The ball bounces back (Reaction)

Hope this Helps

3 0
3 years ago
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