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alex41 [277]
3 years ago
14

How to tell how many solutions a system has khan academy?

Chemistry
1 answer:
serious [3.7K]3 years ago
4 0
It doesn't no solution
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CLUES:
Phantasy [73]
5 because it makes sense
5 0
2 years ago
How many hours will it take for the concentration of methyl isonitrile to drop to 14.0 %% of its initial value?
tiny-mole [99]

This is an incomplete question, here is a complete question.

The rearrangement of methyl isonitrile (CH₃NC) to acetonitrile (CH₃NC) is a first-order reaction and has a rate constant of 5.11 × 10⁻⁵ s⁻¹ at 472 K. If the initial concentration of CH₃NC is 3.00 × 10⁻² M :

How many hours will it take for the concentration of methyl isonitrile to drop to 14.0 % of its initial value?

Answer : The time taken will be, 10.7 hours

Explanation :

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  = 5.11\times 10^{-5}s^{-1}

t = time passed by the sample  = ?

a = let initial amount of the reactant  = 100

a - x = amount left after decay process = 14 % of 100 = 14

Now put all the given values in above equation, we get

t=\frac{2.303}{5.11\times 10^{-5}}\log\frac{100}{14}

t=38482.72s=\frac{38482.72}{3600}=10.7hr

Therefore, the time taken will be, 10.7 hours

7 0
3 years ago
Which shows a correct association between a structure and one of its functions?
Elden [556K]

Answer:

D

Explanation:

Sweat glands remove waste

5 0
3 years ago
2. how are firefighters expected to deal with them
AlekseyPX
Expected to deal with what? Fires?
5 0
3 years ago
How many grams of C12 can be prepared from the reaction of 16.0 g of MnO2 and 30.0 g of HCl according to the following chemical
kogti [31]

Answer:

Mass of Cl₂ produced 12.78 g

Explanation:

Given data:

Mass of MnO₂ = 16 g

Mass of HCl = 30.0 g

Mass of Cl₂ produced = ?

Solution:

Chemical equation:

MnO₂ + 4HCl        →        MnCl₂ + Cl₂ + 2H₂O

Number of moles of MnO₂:

Number of moles = mass / molar mass

Number of moles =  16 g/ 87 g/mol

Number of moles = 0.18 mol

Number of moles of HCl:

Number of moles = mass / molar mass

Number of moles =  30 g/ 36.46 g/mol

Number of moles = 0.82 mol

Now we will compare the moles of Cl₂  with MnO₂ and HCl.

                    MnO₂               :                Cl₂

                        1                   :                   1

                       0.18               :                0.18

                    HCl                  :                   Cl₂  

                       4                    :                     1

                      0.82               :                 1/4×0.82 = 0.205 mol

The number of moles of Cl₂ formed by HCl are less it will limiting reactant.

Mass of Cl₂ formed:

Mass = number of moles × molar mass

Mass = 0.18 mol × 71 g/mol

Mass = 12.78 g

8 0
2 years ago
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