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vagabundo [1.1K]
3 years ago
5

For which substance does (triangle) Hf = 0

Chemistry
1 answer:
umka21 [38]3 years ago
7 0

Answer:

O3 ozone

Explanation:

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Can someone answer these two questions for me ill give brainliest
gladu [14]
Answer:
1. No
2.a. Nothing will happen to figure 1 as both the sides have 30 N.
2.b. The force with 30 N will push 10 N because 10 N is less force than 30 N.
6 0
2 years ago
A solution is prepared by dissolving 215 grams of methanol, ch3oh, in 1000. grams of water. what is the freezing point of this s
Leya [2.2K]

Answer : The freezing point of the solution is, 260.503 K

Solution : Given,

Mass of methanol (solute) = 215 g

Mass of water (solvent) = 1000 g = 1 kg       (1 kg = 1000 g)

Freezing depression constant = 1.86^oC/m=1.86Kkg/mole

Formula used :

\Delta T_f=K_f\times m\\T^o_f-T_f=K_f\times \frac{w_{solute}}{M_{solute}\times w_{solvent}}

where,

T^o_f = freezing point of water = 100^oC=273K

T_f = freezing point of solution

K_f = freezing point constant

w_{solute} = mass of solute

w_{solvent} = mass of solvent

M_{solute} = molar mass of solute

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

273K-T_f=(1.86Kkg/mole)\times \frac{215g}{(32g/mole)\times (1kg)}

By rearranging the terms, we get the freezing point of solution.

T_f=260.503K

Therefore, the freezing point of the solution is, 260.503 K

6 0
3 years ago
Definition of isometry.
alexdok [17]
Isometry, or I think you mean Isometric or Anisometric, is two molecular entities that are superposable or can be made superposable by reflection of one of them in a mirror.
3 0
3 years ago
A student borrows $10,000 from a bank but ends up paying $13,000 on the
NeTakaya

The student paid an interest of $3,000 over the next five years.

HOW TO CALCULATE INTEREST:

The interest on a borrowed amount of money can be calculated by subtracting the principal from the amount paid over time. That is;

Interest = principal - amount

According to this question, a student borrows $10,000 from a bank but ends up paying $13,000. This means that the principal is $10,000 while the amount is $13,000. The interest is calculated thus;

Interest = $13,000 - $10,000

Interest = $3,000

Therefore, the student paid an interest of $3,000 over the next five years.

Learn more about interest at: brainly.com/question/4626564

4 0
2 years ago
Which statement best describes how electrons till orbitals in the penodic table?
nordsb [41]

Answer:

Electrons fill orbitals in order of increasing orbital energy

Explanation:

Apex

8 0
3 years ago
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