All categories

3 years ago

Number of stable isotopes in Hydrogen?

Chemistry

2 answers:

Ainat [17]3 years ago

7 0

Answer:there are three. Protium (A=1), deuterium(A=2), and tritium(A=3)

Explanation:

kari74 [83]3 years ago

5 0

3.
protium (A = 1), deuterium (A = 2), and tritium (A = 3).

You might be interested in

The dissociation of calcium carbonate has an equilibrium constant of Kp= 1.20 at 800°C. CaCO3(s) ⇋ CaO(s) + CO2(g)

Fed [463]

Explanation:

(a) Formula that shows relation between $K_{c}$ and $K_{p}$ is as follows.

$K_c = K_p \times (RT)^{-\Delta n}$

Here, $\Delta n$ = 1

Putting the given values into the above formula as follows.

$K_c = K_p \times (RT)^{-\Delta n}$

= $1.20 \times (RT)^{-1}$

= $\frac{1.20}{0.0820 \times 1073}$

= 0.01316

(b) As the given reaction equation is as follows.

$CaCO_{3}(s) \rightleftharpoons CaO(s) + CO_{2}(g)$

As there is only one gas so ,

$p[CO_{2}] = K_{p}$ = 1.20

Therefore, pressure of $CO_{2}$ in the container is 1.20.

(c) Now, expression for $K_{c}$ for the given reaction equation is as follows.

$K_{c} = \frac{[CaO][CO_{2}]}{[CaCO_{3}]}$

= $\frac{x \times x}{(a - x)}$

= \frac{x^{2}}{(a - x)}[/tex]

where, a = initial conc. of $CaCO_{3}$

= $\frac{22.5}{100} \times 9.56$

= 0.023 M

0.0131 = $\frac{x^{2}}{0.023 - x}$

x = 0.017

Therefore, calculate the percentage of calcium carbonate remained as follows.

% of $CaCO_{3}$ remained = $(\frac{0.017}{0.023}) \times 100$

= 75.46%

Thus, the percentage of calcium carbonate remained is 75.46%.

3 0

4 years ago

If 12.85 g of chromium metal is reacted with 10.72 g of phosphoric acid, then what is the maximum mass in grams of chromium(III)

RUDIKE [14]

<h3>Answer:</h3>

16.02 g

<h3>Explanation:</h3>

<u>We are given;</u>

Mass of chromium as 12.85 g
Mass of phosphoric acid as 10.72 g

We are require to calculate the maximum mass of chromium (III) phosphate that can be produced.

The equation for the reaction is;

2Cr(s) + 2H₃PO₄(aq) → 2CrPO₄(s) + 3H₂(g)

<h3>Step 1: Determining the number of moles of Chromium and phosphoric acid</h3>

Moles = Mass ÷ Molar mass

Molar mass of chromium = 52.0 g/mol

Moles of Chromium = 12.85 g ÷ 52.0 g/mol

= 0.247 moles

Molar mass of phosphoric acid = 97.994 g/mol

Moles of phosphoric acid = 10.72 g ÷ 97.994 g/mol

= 0.109 moles

<h3>Step 2: Determine the rate limiting reactant </h3>

From the equation, 2 moles of chromium reacts with 2 moles of phosphoric acid.
Therefore, 0.247 moles of Chromium will require 0.247 moles of phosphoric acid, but we only have 0.109 moles.

This means chromium is in excess and phosphoric acid is the rate limiting reagent.

<h3>Step 3: Moles of Chromium(III) phosphate</h3>

From the equation, 2 moles of phosphoric acid reacts to yield 2 moles of chromium (III) phosphate.
Therefore, Moles of Chromium (III) phosphate = Moles of phosphoric acid

Hence; moles of CrPO₄ = 0.109 moles

<h3>Step 4: Maximum mass of CrPO₄ that can be produced</h3>

We know that, mass = Moles × Molar mass

Molar mass of CrPO₄ = 146.97 g/mol

Thus,

Mass of CrPO₄ = 0.109 moles × 146.97 g/mol

= 16.02 g

Thus, the maximum mass of CrPO₄ that can be produced is 16.02 g

7 0

4 years ago

what is the equation relating to the energy separation between levels in the H atom to the number of the level (n) called?

Firlakuza [10]

Answer: https://study.com/academy/answer/complete-the-sentence-concerning-the-energy-level-diagram-for-the-hydrogen-atom-the-equation-relating-the-energy-separation-between-levels-in-the-h-atom-to-the-number-of-the-level-n-is-called-the-equation.html#:~:text=Answer%20and%20Explanation%3A,is%20called%20the%20Bohr's%20equation.

Bohr's equation

Explanation: https://study.com/academy/answer/complete-the-sentence-concerning-the-energy-level-diagram-for-the-hydrogen-atom-the-equation-relating-the-energy-separation-between-levels-in-the-h-atom-to-the-number-of-the-level-n-is-called-the-equation.html

Answer and Explanation: The equation relating the energy separation between levels in the H atom to the number of the level (n) is called the Bohr's equation.

6 0

4 years ago

A sample of tap water consists of water, fluoride ions, calcium ions, and several other dissolved ions. The ions are evenly dist

Gekata [30.6K]

Disgusting, depressing, and misery. Tap water is beyond formidable.

6 0

2 years ago

Food labels list the amount of carbohydrates, fats, and proteins, but not nucleic acids. why not

garri49 [273]

The structure of the nucleic acids are having three functional groups, namely, sugar, phosphate group and nitrogenous base. The only source of nucleic acids is your human body in the form of DNA and RNA. They are not obtained from the external environment. This is because the only purpose of nucleic acids are containing the genetic information and the transcription of amino acids to form proteins.

3 0

4 years ago