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natali 33 [55]
3 years ago
11

A) ¿De qué trata el cuento que leíste?​

Chemistry
1 answer:
NISA [10]3 years ago
4 0

No hablo espanol could you put it in English?

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The reaction described by the equation CH 3 Cl + NaOH → CH 3 OH + NaCl follows the second-order rate law, rate = k [ CH 3 Cl ] [
fredd [130]

Answer:

The rate is 4,5 \times 10^{-5}\frac{mole}{Ls}

Explanation:

Stoichiometry

CH_{3}Cl+NaOH \rightarrow CH_{3}OH+NaCl

Kinetics

-r_{A}=k \times [CH_{3}Cl] \times [NaOH]

The rate constant K can be calculated by replacing with the initial data

1 \times 10^{-4}\frac{mole}{Ls}=k \times [0,2M] \times [1,0M]  =5 \times 10^{-4}\frac{L}{mole s}

Taking as a base of calculus 1L, when half of the CH_{3}Cl is consumed the mixture is composed by

0,1 mole CH_{3}Cl (half is consumed)

0,9 mole NaOH (by stoicheometry)

0,1 mole CH_{3}OH  

0,1 mole NaCl

Then, the rate is

-r_{A}=5 \times 10^{-4} \frac{L}{mole s}\times 0,1M \times 0,9 M=4,5 \times 10^{-5}\frac{mole}{Ls}

The reaction rate decreases because there’s a smaller concentration of reactives.

6 0
3 years ago
An electron is moving northward in a magnetic field. the magnetic force on the electron is toward the northeast. what is the dir
sweet-ann [11.9K]
The direction of the magnetic field would be going up.
8 0
3 years ago
Ions move in the direction opposite to that favored by the chemical concentration gradient when _____.
luda_lava [24]

Answer:

B. they are pumped by proteins that require ATP hydrolysis and when the electrical charge gradient repulses or attracts them

Explanation:

Hello,

Ions move in the direction opposite to that favored by the chemical concentration gradient when they are pumped by proteins that require ATP hydrolysis and when the electrical charge gradient repulses or attracts them because active pumping moves ions against their chemical concentration gradients and the Nernst equation describes how membrane potentials can yield electrical gradients to motivate ion movement.

Best regards.

4 0
3 years ago
4. Substances that existed before mixing-still exist-after substances-are-mixed----
pantera1 [17]
False; Because when 2 substances are mixed another substance is created.
5 0
3 years ago
(Please explain the answer. Thank you!)
Dominik [7]

Sample cost = $15.796

<h3>Further explanation</h3>

Given

Mass = 2 g

Density = 0.718 g/ml

Cost =  $5.67 per mL

Required

Cost

Solution

The density : the ratio of mass and volume

Can be formulated :

Density (ρ) = m : V

The volume of the liquid :

V = m : ρ

V = 2 g : 0.718 g/ml

V = 2.786 ml

Sample cost :

= 2.786 ml x $5.67/ml

= $15.796

7 0
3 years ago
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