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mixer [17]
3 years ago
7

What must occur for the enthalpy of solution to be negative?

Chemistry
1 answer:
tiny-mole [99]3 years ago
8 0

Answer:

d on edge my guys.

Explanation:

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If a solution of glucose has a concentration of 0.500 M, how many moles of are in 8.00 L of
Sidana [21]

Answer:

n = 4mol

Explanation:

n =? C= 0.5M, V = 8L

Substitute into

n = CV

n= 0.5×8= 4mol

6 0
3 years ago
Determine the number of moles in 3.13 × 10²³ formula units of MgCl₂.
love history [14]

Answer:

<h2>0.52 moles </h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{3.13 \times  {10}^{23} }{6.02 \times  {10}^{23} }  =  \frac{3.13}{6.02}  \\  = 0.519933

We have the final answer as

<h3>0.52 moles</h3>

Hope this helps you

3 0
3 years ago
Question 3 (1 point)<br> What happens when the temperature of an object increases?
zhannawk [14.2K]

Answer: When the temperature of an object increases, the average kinetic energy of its particles increases. When the average kinetic energy of its particles increases, the object's thermal energy increases. Therefore, the thermal energy of an object increases as its temperature increases.

Explanation: Hope this helps!!

3 0
3 years ago
Read 2 more answers
Electrospray ionization and atmospheric pressure chemical ionization are two methods that are used to introduce the eluate from
Monica [59]

Answer:

Electrospray ionization

Explanation:

Electrospray ionization Is a soft ionization technique used in producing ions from macromolecules, it is employed especially in spectrometry where high voltage is used to create an aerosol from a liquid.It can be employed in Knowing molecular weights of molecules and biological macromolecules such as Peptides and proteins. Therefore, electrospray ionization is the method typically requires analyte ions to be in solution prior to reaching the interface between the column in liquid chromatography and the mass spectrometer

4 0
4 years ago
How do you use solids, liquids and gases in your daily life? Give one example for each.<br> Solid-
inna [77]

Answer:

Explanation:

Solid- When laying soccer you kick the ball, and the ball is a solid.

Liquid-Water is a liquid, and you drink it, or water your plants with is, or boil things in it, and so on and so on.

Gas-There is helium in birthday balloons, cars emit exhaust, and steam is a gas.

7 0
3 years ago
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