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meriva
3 years ago
8

PLSSS HELP. And there’s also at the bottom of the picture another option if u didn’t see it

Chemistry
1 answer:
WARRIOR [948]3 years ago
8 0

Answer:

B. Gradualism

Explanation:

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Biểu thức định luật Raoul là?
Dennis_Churaev [7]

Answer: Định luật Raoult là một định luật hóa học vật lý, với ý nghĩa trong nhiệt động lực học. Được thành lập bởi nhà hóa học người Pháp François-Marie Raoult vào năm 1887, nó nói rằng áp suất một phần của mỗi thành phần của một hỗn hợp chất lỏng lý tưởng bằng với áp suất hơi của thành phần tinh khiết nhân với phần nốt ruồi của nó trong hỗn hợp. Kết quả là, việc giảm áp suất hơi tương đối của dung dịch pha loãng của chất tan không lây bằng với phần nốt ruồi của chất tan trong dung dịch.

Explanation: hope this helps :)

5 0
3 years ago
Zn(OH)2+H3PO4>Zn3(PO4)2+H2O
pshichka [43]

3Zn(OH)₂       +     2H₃PO₄   →   Zn₃(PO₄)₂   +     6H₂O

Explanation:

To balance this equation, we must understand that in every chemical reaction, the number of atoms is usually conserved.

The total number of atoms on the reactant and product sides must be equal and the same.

         Zn(OH)₂       +     H₃PO₄   →   Zn₃(PO₄)₂   +     H₂O

We are are going to use simple, solvable algebraic equations to balance this;

          aZn(OH)₂       +     bH₃PO₄   →   cZn₃(PO₄)₂   +     dH₂O

 a, b,c and d are the number of coefficient that will balance this equation:

  Conserving Zn ;  a = 3c

                       O:   2a + 4b = 8c + d

                       H:  2a + 3b = 2d

                        P:   b = 2c

let c = 1;

      a = 3

       b = 2

solving for d;

           2d = 2(3) + 3(2)

              d = 6

      3Zn(OH)₂       +     2H₃PO₄   →   Zn₃(PO₄)₂   +     6H₂O

learn more:

Balanced equation brainly.com/question/2612756

#learnwithBrainly

6 0
3 years ago
Why can scientists get energy from plants
matrenka [14]
Becuase they have water and oxygen carbon dioxide in them   
3 0
4 years ago
Read 2 more answers
a sample of CO2 occupies a volume of 280ml at a pressure of 1.3 atm and a temperature of 18 degrees celsius, what volume will th
monitta

We can calculate the new volume of the gas using the Combined Gas Law:

(P1 x V1) / T1 = (P2 x V2) / T2

The initial volume, pressure, and temperature were 280 mL, 1.3 atm, and 291.15 K (changing the temperature into Kelvin is necessary), and the final volume, pressure, and temperature is V2, 3.0 atm, and 308.15 K. Plugging these values in and solving, we find that:

(P1 x V1) / T1 = (P2 x V2) / T2

(1.3 atm x 280 mL) / 291.15 K = (3.0 atm x V2) / 308.15 K

V2 = 128.42 mL

This makes sense considering the conditions, a small increase in temperature would make the gas expand but a significant increase in the pressure would cause the volume to decrease.

Hope this helps!

7 0
3 years ago
"How many formula units are there in sample of copper(II) sulfate that has
babymother [125]

Answer: 1.23\times 10^{23} formula units

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number 6.023\times 10^{23} of particles.

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{32.5g}{160g/mol}=0.203moles

1 mole of CuSO_4 contains 6.023\times 10^{23} of formula units

Thus 0.203 mole of CuSO_4 contains =\frac{6.023\times 10^{23}}{1}\times 0.203=1.23\times 10^{23} of formula units

8 0
4 years ago
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