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Gnesinka [82]
2 years ago
6

Hey can someone at least answer one of these please.

Chemistry
1 answer:
Vlada [557]2 years ago
4 0

Answer:

whats the question

Explanation:

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Calculate the mass percentage of the sulfate ion in MgSO4.
andriy [413]

Answer:

The answer to your question is 80%

Explanation:

Data

mass percent of SO₄⁻²

molecule  MgSO₄

Process

1.- Calculate the molecular mass of magnesium nitrate

molecular mass = (1 x 24) + (1 x 32) + (4 x 16)

                           = 24 + 32 + 64

                           = 120 g

2.- Calculate the molecular mass of sulfate ion

molecular mass = (1 x 32) + (4 x 16)

                          = 32 + 64

                          = 96

3.- Write a proportion to solve this problem

                    120 g of MgSO₄ ---------------- 100 %

                      96 g of SO₄⁻²   ---------------  x

                      x = (96 x 100) / 120

                      x = 80 %                  

6 0
3 years ago
GAS LAW PROBLEMS:
lesya692 [45]

Answer:

o

Explanation:

ucbsnwjxjzbsjxbjzbsnsjxbsbbsnxbbxbsnzjjsjzkzkkzkzkz

shshdbsussbbzishxbsbbxusbxhzjjxchinga subs sh is znsoa d bea s for the last time you know. tumamamsr rnnfnt I. NJ just bought new house but he got very very very big but just very kind just bought him just now just now but he has his house but he has his house in his house haha hriirnr is Enfield in his head ️ BF do feel free for me quebro Ayer dry do it for you to do feel like fun for ️ do feel like fun fun fun fun for the last time fun for the last time for free from my gf for free from the other side for from a fe has his house haha he has been busy hereditary so we are going through it and don't feel free can go jump yes very big lol that good in my head that ft in a good game from good get good good GG from a great gAA

3 0
2 years ago
A certain amount of gas is trapped in a nonrigid container at atmospheric pressure. If the container is cooled and the gas in th
Akimi4 [234]

Answer:

D. The volume of the container will decrease.

Explanation:

  • We apply here, the general gas law of ideal gases:

<em>PV = nRT,</em>

where, P is the pressure of the gas.

V is the volume of the container.

n is the no. of moles of the gas.

R is the general gas constant.

T is the temperature of the gas.

  • We are given that P is constant.

Also, n is constant as there is no added external gases.

T is decreased as the container is cooled.

So, the volume will change as the container is nonrigid.

<em>V α T.</em>

The volume is directly proportional to the temperature,

<em>Thus, as the container is cooled, the T will decrease, and the volume of the container will decrease.</em>

8 0
3 years ago
What is the [oh−] of a solution if its ph = 8.78? answer in units of m?
dexar [7]
PH = -log([H+])
[H+] = 10^(-pH)

[H+] = 10^(-8.78) = 1.65*10^-9

[H+][OH-] = Kw
Kw = 1.0*10^-14 at 25 degrees celsius.

[OH-] = Kw/[H+] = (1.0*10^-14)/(1.65*10^-9) = 6.06*10^-6

The concentration of OH- ions is 6.1*10^-6 M.
7 0
3 years ago
What is vaccine (question answer)<br><br><br><br>​
Ket [755]
Above answer is correct
6 0
2 years ago
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