1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Stolb23 [73]
2 years ago
7

What is the specific latent heat of fusion for a substance that takes 550 kJ to melt 14 kg at 262 K?

Chemistry
1 answer:
Ray Of Light [21]2 years ago
3 0

Answer:

The answer is A

Explanation:

hope it helps

You might be interested in
One compound in the list below is a gas at room conditions, while all of the others are liquids or solids. For each compound, in
Step2247 [10]

Answer:

First list

A. CH3OH----hydrogen bonds

CH4----dispersion forces

CaCO3---ionic bonds

C6H14----dispersion forces

Second list

H2O------ liquid----hydrogen bonds

C2H2----gas---dispersion forces

CCl4---liquid---dispersion forces

KCl----solid---ionic bonds

Explanation:

For every compound, the intermolecular forces decide whether the substance will be solid liquid or gas. Molecules are known to associate with each other in any particular state of matter. These molecules are held together by different intermolecular interactions with varying degrees of strength. The strength of the intermolecular interaction between the molecules of a substance will decide if the substance will be a solid, liquid or gas.

When the intermolecular forces are very strong such as in ionic solids and covalent network solids, the substance exists as a solid. When the intermolecular forces are not so strong such as dispersion forces and hydrogen bonds, the substance exists as a liquid. However, very weak intermolecular dispersion forces are found in gases hence the molecules are relatively free when compared to molecules of liquids and solids.

7 0
3 years ago
Cuando un gas que se encuentra a 20°c se calienta hasta los 40°c sin que varie su presion, su volumen se duplica
kati45 [8]

Answer:

Not doubled

Explanation:

The equation below represent the ideal gases relationship

PV ÷ T = constant

Here

P denotes pressure,

V denotes volume,

T denotes temperature in degrees Kelvin

Now

20 ° c = 273 + 20

= 293 K

And,

40 ° c = 313 K

So,

V = Vo. 313 K ÷  293 K = 1.07 Vo

So,  the volume is NOT doubled.

In the case when the temperature would be determined in degrees celsius at 0 degrees so the volume would be zero

4 0
2 years ago
The metallic radius of a potassium atom is 231 pm. What is the volume of a potassium atom in cubic meters?
Sauron [17]
1 pm = 10∧-10 cm
Therefore, 230 pm is equivalent to 2.3 ×10∧-8 cm.
Atom is in the shape of a sphere,
The volume of a sphere is given by 4/3πr³
Thus, volume of the atom = 4/3π( 2.3 ×10∧-8)³
                                          = 4/3 (3.142 ×12.167×10∧-24
                                           = 5.096 ×10∧-23 cm³
but 1m³= 1000000cm³
Therefore, the volume of the atom = 5.096 ×10∧-29 m³
8 0
3 years ago
A small positively charged ball is moved closer to a large, positively charged ball. which describes how the small ball likely r
tankabanditka [31]

Answer:

This is just my guess, but since opposites attract, then im guessing that alikes repel each other. So, they will go away from each other when the ball is released (I think).

Explanation:

Hope this helps! If it did, please mark it as brainliest! It would help a lot! Thanks! :D

7 0
3 years ago
How many grams of cupric sulfate pentahydrate are needed to prepare 50.00 mL of 0.0800M CuSO4× 5H2O?
shepuryov [24]

Explanation:

Molarity is defined as number of moles per liter of solution.

Mathematically,         molarity = \frac{no. of moles}{Volume (in L) of solution}

It is given that molarity is 0.0800 M and volume is 50.00 mL or 0.05 L.

           molarity = \frac{no. of moles}{Volume of solution in liter}

            0.0800 M = \frac{no. of moles}{0.05 L}

            no. of moles = 1.6 mol

Therefore, molar mass of cupric sulfate pentahydrate is 249.68 g/mol. So, calculate the mass as follows.

                No. of moles = \frac{mass in grams}{molar mass}

             mass in grams = no. of moles \times molar mass of CuSO_{4}.5H_{2}O

                                       = 1.6 mol \times 249.68 g/mol

                                       = 399.488 g

Thus, we can conclude that 399.488 g of cupric sulfate pentahydrate are needed to prepare 50.00 mL of 0.0800M CuSO4× 5H2O.

4 0
3 years ago
Other questions:
  • Which of the compounds, C3H8, mgcl2, OCl2 are expected to exist as molecular compounds?
    11·1 answer
  • Zn(s) + 2HCl(aq) → H2(g) + ZnCl2(aq) When 25.0 g of Zn reacts, how many L of H2 gas are formed at STP?
    11·2 answers
  • I’ve been up all night doin chemistry, can someone please give me the answers
    14·1 answer
  • Which of the following compounds are ionic compounds? Check all of the boxes that apply.
    13·2 answers
  • The literature value for the density of aluminum is 5.6 g/mL. If an experimenter calculates a value of 5.2g/mL, what is their pe
    13·1 answer
  • A 8.29g sample of calcium sulfide was decomposed into its constituent elements, producing 4.61g of calcium and 3.68g of sulfur.
    14·1 answer
  • Explain how the Octet Rule would say that the elements of potassium and chlorine would react.
    14·1 answer
  • Determine the concern traction in [M] of a solution that has an absorbance of 0.420
    6·1 answer
  • If 82.5 mol of an ideal gas occupies 10.5 l at 317 k, what is the pressure of the gas?
    14·1 answer
  • Balance the following skeleton reactions and identify the oxidizing and reducing agents:(b) Fe(CN)₆³⁻(aq) + Re(s) →\mathrm{Fe}(\
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!