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Lelu [443]
3 years ago
8

What volume of hydrogen is necessary to react with 6.25g of nitrogen to produce ammonia?

Chemistry
2 answers:
Dovator [93]3 years ago
7 0
A.30L First one the answer
Sidana [21]3 years ago
3 0
A) 30L is correct I did this 4 years ago
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What mass of YCL3 forms when 10.0 grams of each reactant are combined?
Triss [41]

The mass of YCl_3 that would be formed will be 18.22 grams

<h3>Stoichiometric calculations</h3>

Let us first look at the balanced equation of the reaction:

2Y + 3Cl_2 --- > 2YCl_3

The mole ratio of Y to Cl_2 is 2:3.

Mole of 10.0 grams of Y = 10/88.9 = 0.11 moles

Mole of 10.0 grams  Cl_2 = 10/71 = 0.14 moles

3/2 of 0.11 = 0.165. Thus,  Cl_2 is limiting in availability.

Mole ratio of  Cl_2 and YCl_3 = 3:2

Equivalent mole of YCl_3 = 2/3 x 0.14 = 0.093 moles.

Mass of 0.093 moles YCl_3 =0.093 x 195.26 = 18.22 grams

More on stoichiometric calculations can be found here: brainly.com/question/27287858

#SPJ1

5 0
2 years ago
(More than one answer can be choosen )
lions [1.4K]

Answer:

When ionic solutes are dissolved in water, the molecules of water pull the ions of the crystal apart and the electrostatic forces are cut off. Further the ions are surrounded by the water molecules which act as a barrier around the ions and prevent the recombination of ions.

Explanation:

Sorry, this isn't my answer. I got it from google, but I hope it helps!

:))

3 0
3 years ago
A student constructs an electrochemical cell. A diagram of the operating cell and the unbalanced ionic equation representing the
Dominik [7]

Answer:

A voltaic cell

Explanation:

A voltaic cell is a device which converts chemical energy to electrical energy. The chemical reactions that take place inside the cell causes electrons to flow from anode to cathode hence, electricity is produced. A simple voltaic cell is made by placing two different metals in contact with an electrolyte separated by a salt bridge. The cathode is the negative electrode while the anode is the positive electrode. It is also called a galvanic cell.

In a voltaic cell having a copper/copper solution half cell, reduction occurs at the cathode. Hence, at the cathode copper II ions accept two electrons and become reduced to ordinary metallic copper. This causes the blue colour of the solution to become discharged (fade) as the cell continues to function.

8 0
4 years ago
I NEED HELP PLEASE, THANKS!
Crazy boy [7]

Answer:

Here's what I get.

Explanation:

1. Brønsted-Lowry theory

An acid is a substance that can donate a proton to another substance.

A  base is a substance that can accept a proton from another substance.

2. pH of ammonia

The chemical equation is

\rm NH$_{3}$ + \text{H}$_{2}$O \, \rightleftharpoons \,$ NH$_{4}^{+}$ + \text{OH}$^{-}$

For simplicity, let's re-write this as

\rm B + H$_{2}$O \, \rightleftharpoons\,$ BH$^{+}$ + OH$^{-}$

(a) Set up an ICE table.

                     B + H₂O ⇌ BH⁺ + OH⁻

I/mol·L⁻¹:     0.335             0        0

C/mol·L⁻¹:       -x                +x       +x

E/mol·L⁻¹:  0.335 + x          x         x

\rm K_{\text{b}} = \dfrac{\text{[BH}^{+}]\text{[OH}^{-}]}{\text{[B]}} = 1.8 \times 10^{-5}\\\\\dfrac{x^{2}}{0.335 - x} = 1.8 \times 10^{-5}

Check for negligibility:

\dfrac{0.335}{1.8 \times 10^{-5}} = 28 000 > 400\\\\x \ll 0.335

(b) Solve for [OH⁻]

\dfrac{x^{2}}{0.335} = 1.8 \times 10^{-5}\\\\x^{2} = 0.335 \times 1.8 \times 10^{-5}\\x^{2} = 6.03 \times 10^{-6}\\x = \sqrt{6.03 \times 10^{-6}}\\x = \text{[OH]}^{-} = \mathbf{2.46 \times 10^{-3}} \textbf{ mol/L}

(c) Calculate the pOH

\text{pOH} = -\log \text{[OH}^{-}] = -\log(2.46 \times 10^{-3}) = 2.61

(d) Calculate the pH

pH = 14.00 - pOH = 14.00 - 2.61 = 11.39

3 0
4 years ago
All people who are asked to testify in a criminal case must first be issued a subpoena by law enforcement.
BigorU [14]

Answer:

Option B

Explanation:

All people who are asked to testify in a criminal case must first be issued a subpoena by law enforcement, is a "false statement" or option B. A subpoena is a request to appear in court which is usually given out by the attorneys who are a part of the case, the law enforcement does not give out subpoenas, so this is indeed a false statement.

Hope this helps.

7 0
3 years ago
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