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gtnhenbr [62]
3 years ago
12

Select True or False: The equilibrium constant for the chemical equation 2NO(g) O2(g) 2NO2(g) is two times the equilibrium const

ant for the chemical equation NO(g) 1/2O2(g) NO2(g).
Chemistry
1 answer:
ser-zykov [4K]3 years ago
4 0

Answer:

False

Explanation:

The first reaction is;

NO(g) + 1/2O2(g) ---->NO2(g)

K= [NO2]/[NO] [ O2]^1/2

The second reaction is;

2NO(g) + O2(g) ---->2NO2(g)

K'= [NO2]^2/[NO]^2 [O2]

It now follows that;

K'= K^2

Hence the statement in the question is false

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Which name is associated with a system of climate zones?
andrew11 [14]

Answer: A. Wladimir Koppen.

I hope that this helps you and good luck!!

~Sara

8 0
3 years ago
2. What is the mass of 5.3 moles of CaCl2?
Tanya [424]

Answer:

590 g CaCl₂

General Formulas and Concepts:

<u>Chemistry - Atomic Structure</u>

  • Reading a Periodic Table
  • Using Dimensional Analysis

Explanation:

<u>Step 1: Define</u>

5.3 mol CaCl₂

<u>Step 2: Identify Conversions</u>

Molar Mass of Ca - 40.08 g/mol

Molar Mass of Cl - 35.45 g/mol

Molar Mass of CaCl₂ - 40.08 + 2(35.45) = 110.98 g/mol

<u>Step 3: Convert</u>

<u />5.3 \ mol \ CaCl_2(\frac{110.98 \ g \ CaCl_2}{1 \ mol \ CaCl_2} ) = 588.194 g CaCl₂

<u>Step 4: Check</u>

<em>We are given 2 sig figs. Follow sig fig rules and round.</em>

588.194 g CaCl₂ ≈ 590 g CaCl₂

5 0
3 years ago
I need help for this one please
stepladder [879]

Explanation:

answer is permanent dipole dipole forces hydrogen bonding and van see waals forces

5 0
3 years ago
Hello can someone help me please and thanksss
Svetlanka [38]

the equation of the parabola is given as y = 1/4 (x-6)^2 +1. D

<h3>How to find the parabola</h3>

Given the focus(6,2) and the directrix, y = 0

Use the formula

\sqrt{(x-6)^{2} + (y-2)^{2} } } = (y - 0)

Find the square of both sides, square root is removed from the side with it and square added on the other side

(x-6)^2 + (y-2)^2 = (y- 0)^{2}

Expand the expression and bring all terms to one side

x^{2} - 6x - 6x + 36 +y^{2} -2y- 2y +4 = y^{2} - 0

Collect like terms

x^{2} - 12x -4y + 40 = 0

Make 'y' the subject of the formula

4y = x^{2} - 12x + 40

Divide through by 4 and substrate 4 from 40 to give a perfect quadratic equation

y = 1/4 x^{2} - 12x + 36 + 4

Divide factor by 4 to give 1

y = 1/4( x^{2} -6x -6x +36) + 1

Simplify the expanded quadratic equation

y = x (x -6) - 6 (x- 6), we have (x - 6) ^2

Then insert in place into previous equation

y = 1/4 (x-6)^2 + 1

Thus, the equation of the parabola is given as y = 1/4 (x-6)^2 +1

Learn more about a parabola here:

brainly.com/question/4061870

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5 0
2 years ago
Which sample contains the fewest atoms? a. 10 g of c b. 10 g of ne c. 10 g of f d. 10 g of n e. 10 g of o
Lerok [7]

The molar mass and the mass of the substance give the moles of the substance. The 10-gram sample of neon (Ne) has the fewest atoms. Thus, option b is correct.

<h3>What are moles?</h3>

Moles of the substance are the ratio of the molar mass and the mass of the substance. The moles of each atom with respect to the Avagadro's number (Nₐ) is given as,

Moles = mass ÷ molar mass

  • Moles of carbon (C) = 10 ÷ 12

= 0.83 Nₐ atoms

  • Moles of neon (Ne) = 10 ÷ 20

= 0.5 Nₐ atoms

  • Moles of fluorine (F) = 10 ÷ 19

= 0.52 Nₐ atoms

  • Moles of nitrogen (N) = 10 ÷ 14

= 0.7 Nₐ atoms

  • Moles of oxygen (O) = 10 ÷ 16

= 0.63 Nₐ atoms

Therefore, option b. 10 gm neon has the fewest atoms.

Learn more about moles here:

brainly.com/question/11884840

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7 0
2 years ago
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