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Burka [1]
3 years ago
11

Ứng dụng điều chế của lưu huỳnh thành oxit axit ?

Chemistry
1 answer:
Juli2301 [7.4K]3 years ago
6 0

that's your work bro do by your own

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An alkanol contains 37.5 carbon
kow [346]

Answer:

Empirical formula is CH₄

Molecular formula = C₂H₈

Explanation:

Mass of carbon = 37.5 g

Mass of hydrogen = 12.5 g

Molecular weight = 32 g/mol

Molecular formula = ?

Empirical formula = ?

Solution:

Number of gram atoms of C = 37.5 g /12g/mol = 3.125

Number of gram atoms of H = 12.5 g / 1.008 g/mol= 12.4

Atomic ratio:

C                 :            H            

3.125/3.125   :       12.4 /3.125

    1                :            4          

C : H : = 1 : 4

Empirical formula is CH₄

Molecular formula:

Molecular formula = n (empirical formula)

n = molar mass of compound / empirical formula mass

n = 32  / 16

n = 2

Molecular formula = n (empirical formula)

Molecular formula = 2 ( CH₄)

Molecular formula = C₂H₈

3 0
3 years ago
ENTER THE COEFFICIENTS DIRECTLY FROM THE BALANCED CHEMICAL EQUATION. do not reduce to lowest terms. for example: if 3 moles H2 r
dlinn [17]

Answer:

The coefficients are 2 for H₂O and 1 for Ca(OH)₂.

Explanation:

Let's consider the following reaction.

Ca(OH)₂(aq) + 2 HCl(aq) → CaCl₂(aq) + 2 H₂O(l)

According to the balanced equation, the molar ratio of H₂O to Ca(OH)₂ is 2:1. Using this conversion factor, we have the following proportion:

moles Ca(OH)₂. (2 mol H₂O ÷ 1 mol Ca(OH)₂) = moles H₂O

4 0
3 years ago
Some types of bar soap will float in water. What are the dispersed particles?
Sergio039 [100]

Answer:

cell's

Explanation:

3 0
3 years ago
Read 2 more answers
A gate made of painted iron is beginning to rest in areas where the paint has worn away why is the formation of rust considered
Pavel [41]

Answer:

because it is two substances reacting together to create a new substance

Explanation:

when iron rusts, iron molecules react with the oxygen molecules creating iron oxide aka rust.

3 0
2 years ago
The reaction A + B → C has a ∆G'° of –20 kJ/mol at 25° C. Starting under standard conditions, one can predict that: A) at equili
Step2247 [10]

Answer:

C) at equilibrium, the concentration of C will be much greater than the concentration of A or B.  

Explanation:

A + B ⇌ C; ΔG° = -20 kJ·mol⁻¹

If ΔG is negative, the reaction is spontaneous and position of equilibrium lies to the right, so the equilibrium concentration of C is much greater than that of A or B.

A) is wrong. The molar ratio of A:B is 1:1. If their initial concentrations are 1 mol·L⁻¹, their final concentrations will be equal.

B) is wrong. The position of equilibrium lies to the right, so the concentration of C will be much greater than that of A.

D) and E) are wrong. ΔG says nothing about the rate of a reaction. It deals with the spontaneity and position of equilibrium not the speed at which equilibrium is achieved.

3 0
3 years ago
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