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3 years ago

What is the charge on the hydronium ion?

Chemistry

2 answers:

puteri [66]3 years ago

3 0

A hydronium ion has a charge of one plus

zmey [24]3 years ago

3 0

Answer:

Explanation:

When a hydrogen cation reacts with a molecule of water, it forms a hydronium cation, according to the following reaction.

H⁺(aq) + H₂O(l) → H₃O⁺

Each hydrogen atom has charge of +1, while the oxygen atom has a charge of 2-. The net charge of the hydronium ion is:

3.(H) + 1.(O) = 3.(1+) + 1.(2-) = 3 - 2 = 1+

The charge of the hydronium ion is 1+.

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3 years ago

A molecule is known to have a molar absorptivity of 18,650 at a certain wavelength. A spectrometer is tuned to this wavelength a

iren2701 [21]

Answer:

17,932.69 g/mol is the molecular weight of the substance.

Explanation:

Using Beer-Lambert's law :

Formula used :

$A=\epsilon \times c\times l$

where,

A = absorbance of solution = 1.04

c = concentration of solution =?

l = length of the cell = 1 cm

$\epsilon$ = molar absorptivity of this solution = 18,650 $M^{-1} cm^{-1}$

Now put all the given values in the above formula, we get the molar absorptivity of this solution.

$1.04=18,650 M^{-1} cm^{-1}\times c)\times (1cm)$

c = $5.576\times 10^{-5} M$

$Concentration=\frac{\text{Mass of compound}}{\text{Molecular mass of compound}\times V}$

V = Volume of the solution in L

Molecular weight of the substance = x

V = 100 mL = 0.1 L

Mass of the substance = 100 mg = 0.1 g

$5.576\times 10^{-5} M=\frac{0.1 g}{x\times 0.1 L}$

x = 17,932.69 g/mol

17,932.69 g/mol is the molecular weight of the substance.

6 0

3 years ago

How much is the oxygen valency?

Marina CMI [18]

The oxygen valency is 2

4 0

3 years ago

HURRYYY!!!!<br> How many moles of salt do you have, if you have 5.00 x 10^26 formula units of salt?

Nikitich [7]

Answer:

<h2>830.56 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = \frac{N}{L}\\$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

$n = \frac{5.00 \times {10}^{26} }{6.02 \times {10}^{23} } \\ = 830.5647..$

We have the final answer as

<h3>830.56 moles</h3>

Hope this helps you

6 0

3 years ago