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3 years ago

What is the pH of an aqueous solution of HCl with a hydrogen ion

Chemistry

1 answer:

yulyashka [42]3 years ago

6 0

Answer:

pH = 5.17

Explanation:

pH = -log[H+] = -log(6.7 x 10^-6) = 5.17

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While performing the Acid-catalyzed Hydrolysis of Epoxides experiment you used a solution containing 1.84 mL of cyclohexene oxid

Elenna [48]

Answer:

The moles of starting material is $1.8212 \times 10^{-2}$ mole

Explanation:

Given:

Cyclohexene oxide material is used

Density = 0.97 $\frac{g}{mL}$

Volume = 1.84 mL

Formula of Cyclohexene oxide = $C_{6} H_{10} O$

Molar mass is given by,

$C = 6 \times 12 = 72$

$H = 10 \times 1 = 10$

$O = 1 \times 16 = 16$

⇒ $m' = 96\frac{g}{mol}$

Mass $m = 0.97 \times 1.84 = 1.7848$ $g$

Moles is given by,

$n = \frac{m}{m'}$

$n = \frac{1.7848}{98}$

$n = 1.8212 \times 10^{-2}$ mol

Therefore, the moles of starting material is $1.8212 \times 10^{-2}$ mole

3 0

3 years ago

Based on the reactivities of the elements involved, which reaction will form products that are more stable than the reactants?

MrRa [10]

Answer:

Exothermic reaction

Explanation:

Since in an exothermic reaction heat is released, the products will be more stable than the reactants.

6 0

2 years ago

What is the SI unit for the mass of subatomic particles?

gogolik [260]

<em>hey, im jordan :)</em>

the SI unit for the mass of subatomic particles is <u>amu (atomic mass unit)</u>

<em>hope this helps!</em>

<em>have a great day :D</em>

4 0

3 years ago

Two examples of energy transformations are shown.

erastova [34]

The energy transformations are similar because they result into radiant energy.

As for the lamp, Electrical energy is transformed into light when the filament

or mercury vapor glows on passage of current.

The fire- chemical energy is turned to light energy during the combustion of carbon. Both products comprise of ultraviolet radiation which is a form of radiant energy.

5 0

3 years ago

Read 2 more answers

What is the volume of a weather balloon that has 39 grams of helium with a density 0.017 g/mL?

olchik [2.2K]

Answer:

<h3>The answer is 235.29 mL</h3>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

$volume = \frac{mass}{density} \\$

From the question.

density = 0.017 g/mL

mass = 4 g

We have

$volume = \frac{4}{0.017} \\ = 235.2941176...$

We have the final answer as

Hope this helps you

4 0

3 years ago