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Zielflug [23.3K]
2 years ago
13

Cho 1,08g một kim loại hóa trị III tác dụng với khí clo tạo thành 2,67 g clorua kim loại. Xác định tên kim loại

Chemistry
1 answer:
Step2247 [10]2 years ago
7 0

Answer:

kkk=k[ompik jk m.

Explanation:

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How many L of a 7.5 H2SO4 stock solution would you need to prepare a dilute solution 100 L of 0.25M H2SO4
blsea [12.9K]

Answer:

3.33 L

Explanation:

We can solve this problem by using the equation:

  • C₁V₁=C₂V₂

Where the subscript 1 refers to one solution and subscript 2 to the another solution, meaning that in this case:

  • C₁ = 0.25 M
  • V₁ = 100 L
  • C₂ = 7.5 M
  • V₂ = ?

We input the data:

  • 0.25 M * 100 L = 7.5 M * V₂
  • V₂ = 3.33 L

Thus the answer is 3.33 liters.

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2 years ago
Which water sources contribute to a river system? Check all that apply.
garri49 [273]
Ground water
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6 0
3 years ago
Read 2 more answers
How many sucrose molecules are in 3.0 moles of sucrose scientific
DiKsa [7]
Answer:
             1.80 × 10²⁴ Molecules of Sucrose

Solution:

Number of Moles and Number of Particles (molecules in given case) are related to each other as,

                  Moles  =  Number of Molecules ÷ 6.022 × 10²³

Solving for Number of Molecules,

                  Number of Molecules  =  Moles × 6.022 × 10²³

Data Given;
                     Moles  =  3 moles

Putting values in eq,


                 Number of Molecules  =  3 mol × 6.022 × 10²³


                 Number of Molecules  =  1.80 × 10²⁴ Molecules
3 0
3 years ago
Under what circumstances might be important to know the activity tendencies of elements?
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Answer: It is very important to know the activity tendencies of the elements. The activity tendencies tells us about whether the element is reactive or not.

In the redox-reaction where there is a need to know the oxidizing agent and reducing agent, we can know it easily from the activity tendencies. The elements lying above the reactivity series are better reducing agents.

In the substitution reactions, the activity tendencies helps us to know which element will replace the other. The element lying above in the series will replace the element lying below it.

MX+NY \rightarrow MY+NX

where, N is an element that lies above in the reactivity series

M is an element that lies below in the reactivity series

3 0
3 years ago
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