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Anestetic [448]
3 years ago
6

50 POINTS PLUS BRAINLIEST NEED HELP ASAP Please solve these 5 questions

Chemistry
1 answer:
MariettaO [177]3 years ago
4 0

Answer:

Argon 7.89693x10^25 atoms

Gold 4.1949252x10^25 atoms

Carbon Monoxide 34.55149 moles

Potassium oxide  1.6 moles

Calcium 4.4969x10^24 atoms

Explanation:

Its done with dimensional analysis i can not put the full work here because it would look to sloppy

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What are some properties of acids and bases
taurus [48]

Answer:

<u><em>Properties of Acids:</em></u>

Taste : Sour

Effect on blue litmus paper: Turns Red

Effect on red litmus paper: No Effect

Effect on skin: Corrosive

Electrical Conductivity: Aqueous solutions conduct electricity

<u><em>Properties of bases:</em></u>

Taste : Bitter

Effect on blue litmus paper: No effect

Effect on red litmus paper: Turns Blue

Effect on skin: Harm Skin Tissue

Electrical Conductivity: Aqueous solutions conduct electricity

5 0
3 years ago
Read 2 more answers
The Kw of water varies with temperature. Calculate the pH of water at 46⁰C with a Kw = 1.219 x 10-14. Show all calculations lead
stich3 [128]
Kw = 1.219x10⁻¹⁴

kw = [H⁺] x [OH⁻]

in water [H⁺] = [OH⁻] therefore:

[H⁺] = √ kw

[H⁺] = √ <span>1.219x10⁻¹⁴

[H</span>⁺] = 1.104x10⁻⁷

pH = - log [H⁺]

pH = - log [ <span>1.104x10⁻⁷ ]

pH = 6.95

hope this helps!</span>
8 0
3 years ago
A piece of Li is
Solnce55 [7]
It’s a chemical change
8 0
3 years ago
The Kp for the reaction below is 1.49 × 108 at 100.0°C:CO(g) + Cl2(g) → COCl2(g)In an equilibrium mixture of the three gases, PC
Serggg [28]

<u>Answer:</u> The equilibrium partial pressure of phosgene is 7.34 atm

<u>Explanation:</u>

The given chemical equation follows:

                    CO(g)+Cl_2(g)\rightleftharpoons COCl_2(g)

The expression of K_p for above equation follows:

K_p=\frac{p_{COCl_2}}{(p_{CO})\times (p_{Cl_2})}

We are given:

Equilibrium partial pressure of CO = 2.22\times 10^{-4}atm

Equilibrium partial pressure of chlorine gas = 2.22\times 10^{-4}atm

K_p=1.49\times 10^8

Putting values in above equation, we get:

1.49\times 10^8=\frac{p_{COCl_2}}{(2.22\times 10^{-4})\times (2.22\times 10^{-4})}\\\\p_{COCl_2}=7.34atm

Hence, the equilibrium partial pressure of phosgene is 7.34 atm

7 0
3 years ago
Given the amount of solute in grams and the volume of the solution in milliliters, how would you go about calculating the molari
marshall27 [118]
Molarity is defined as the number of moles of solute in 1 L of the solution.
Since the mass of the solute has been given we have to obtain the number of moles of solute
Number of moles = mass / molar mass
So we need to convert the mass to number of moles by dividing the mass by its molar mass.
The volume of the solution needs to be given in L but it has been measured in ml. Therefore volume in mL should be converted to L.
The molarity is found by dividing the number of moles by volume of solution in L
Answer is C)
7 0
3 years ago
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