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beks73 [17]
3 years ago
8

PLEASE HELP The arrows in the chart below represent phase transitions.

Chemistry
1 answer:
Alona [7]3 years ago
5 0

1, 2, and 3

hope it helps next time upload with picture

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Hey everyone!! Can someone please explain the periodic table of elements and whoever wants to talk I can talk to!!
Burka [1]

Answer:

The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass. ... For instance, all the group 18 elements are inert gases.

Explanation:

3 0
3 years ago
Even though we can't digest it, fiber is an important part of digestion because it __________
Rzqust [24]

Answer:

1.<em>C</em><em>.</em><em>Keeps</em><em> </em><em>blood</em><em> </em><em>sugar</em><em> </em><em>low</em>

Explanation:

i just know number 1 am nt sure of number 2

3 0
3 years ago
A cylinder with a movable piston originally has a volume of 2805 mL and is filled with nitrogen to a pressure of 4.00
Sergio039 [100]

This problem is providing the initial volume and pressure of nitrogen in a piston-cylinder system and asks for the final pressure it will have when the volume increases. At the end, the answer turns out to be 2.90 atm.

<h3>Boyle's law</h3>

In chemistry, gas laws are used so as to understand the volume-pressure-temperature-moles behavior in ideal gases and relate different pairs of variables.

In this case, we focus on the Boyle's law as an inversely proportional relationship between both pressure and volume at constant both temperature and moles:

P_1V_1=P_2V_2

Thus, we solve for the final pressure by dividing both sides by V2:

P_2=\frac{P_1V_1}{V_2}

Hence, we plug in both the initial pressure and volume and final volume in order to calculate the final pressure:

P_2=\frac{2805mL*4.00atm}{3864mL}\\ \\P_2=2.90atm

Learn more about ideal gases: brainly.com/question/8711877

6 0
3 years ago
What is the correct equilibrium constant expression for the following heterogeneous equilibrium? 4HCl (g) + O2 (g) ⇄ 2H2O (l) +
gizmo_the_mogwai [7]

Answer:

Kc=[Cl2]2/[HCl]4[O2]

Explanation:

Hello,

In this case, the law of mass action, allows us to study the mathematical expression regarding an equilibrium chemical reaction allowing us to see a relationship between the equilibrium constant and the concentration of both the products and reactants at equilibrium for either gaseous or aqueous substances only. Such relationship is assembled as the quotient between the concentration of products at equilibrium over the concentration of reactants at equilibrium equaling the equilibrium constant. Thus, for the given chemical reaction, such expression will have the concentration of chlorine at the numerator and both the concentrations of hydrogen chloride and oxygen at the denominator since water is liquid so it is not included in the shown below equation:

Kc=\frac{[Cl]^2}{[HCl]^4[O_2]}

Therefore the answer is: Kc=[Cl2]2/[HCl]4[O2].

Best regards.

5 0
4 years ago
Read 2 more answers
What material could be used for a cup to keep coffee hot
nata0808 [166]

Answer:

Your answer could be: ceramic or stainless steel.

Explanation:

Glass, ceramic, and stainless steel are all good insulating materials for keeping coffee hot. Although, if you don't want to possibly burn yourself, don't use glass.

Have a great day/night! ^^

4 0
3 years ago
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