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Gnom [1K]
3 years ago
8

241 san sotope of plutonium that is highly radioactive and is used in some nuclear reactors and many nuclear weapons.

Chemistry
1 answer:
postnew [5]3 years ago
8 0

Answer:

your answer is the third option

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Calculate the concentration of buffer components present in 210.00 mL of a buffer solution that contains 0.300 M NH4Cl and 0.300
Lynna [10]

Answer:

[NH3] = 0.270M

[NH4Cl] = 0.327M

Explanation:

The HNO3 will react with the weak base, NH3, as follows:

HNO₃ + NH₃ → NH₄⁺ + NO₃⁻

Initial moles of each specie of the buffer:

NH3 = NH4⁺ 0.210L * (0.300mol/L) = 0.063moles

The moles added of HNO3 = Additional moles of NH4Cl and the moles substracted of NH3:

0.001L * (6mol / L) = 0.006 moles.

After the addition:

Moles NH3 = 0.063mol - 0.006mol = 0.057moles

Moles NH4Cl = 0.063mol + 0.006mol = 0.0069moles

And their concentrations are:

[NH3] = 0.057moles / 0.211L = 0.270M

[NH4Cl] = 0.069moles / 0.211L = 0.327M

7 0
4 years ago
NEED HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
Zanzabum

True

Explanation:

It is correct to say that the biosphere includes all of the fish that are in the ocean. Even though the ocean is part of the hydrosphere.

The biosphere includes all life form on earth wherever they may dwell from deep abyss to the high atmosphere.

The different spheres on earth are interacting with one another and they depend on each other.

Just like the earth systems, the spheres of the earth relates with each other. Even the ocean is contained in the geosphere.

learn  more:

Biodiversity brainly.com/question/10723602

#learnwithBrainly

3 0
4 years ago
Which substance is an Arrhenius acid?<br> (1) LiF(aq) (3) Mg(OH)2(aq)<br> (2) HBr(aq) (4) CH3CHO
Novay_Z [31]
HBr (aq) is an Arrhenius acid.
The equation is <span>HBr(aq) -> H+ + Br-</span><span> </span>
6 0
3 years ago
Read 2 more answers
Calculate the number of moles of Mg(NO3)2 consisting of 8.428 x 10^23 formula units of <br> Mg(NO3)2
bekas [8.4K]

Answer: 1.4 moles Mg(NO3)2

Explanation: Solution attached:

Convert the formula units of Mg(NO3)2 to moles using the Avogadro's number.

6 0
3 years ago
Nitrogen gas makes up more of the atmosphere than any other type of molecule.
Ad libitum [116K]
Nitrogen gas makes up more of the atmosphere than any other type of molecule.

N2
5 0
4 years ago
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