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AlexFokin [52]
2 years ago
14

How many moles contain 5.34 x 10^26 atoms of iron?

Chemistry
1 answer:
SCORPION-xisa [38]2 years ago
6 0

Answer: 1.31 × 10^47 sorry if its not the answer

Explanation:

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The rate constant for the oxidation of nitric oxide by ozone is 2 x 10^14 molecule cm s, whereas that for the competing reaction
andreev551 [17]

Answer:

The NO + O3 is the dominant reaction.

Explanation:

First of all, let's convert to molecules/cm³;

For O3;

O3 at 40 ppb in atm= 4 x 10^(-8) atm and from ideal gas law PV = nRT or simplify n/V = P/RT

Thus, plugging in the relevant values to get;

n/V = [4 x 10^(-8)]/(0.0821 x 298) = 1.636 x 10^(-9)

So, n/V = 1.636 x 10^(-9) = (1.635 x 10-9 mol L-1)(6.02 x10^(23) molec/mol)(L/1000 cm3) =

9.84 x 10^(11) molecules/cm³

But from the question, NO has 2 moles, and thus concentration is;

2 x 9.84 x 10^(11) = 1.968 x 10^(12) molec/cm³

For O2;

Following the same pattern for O3, we obtain;

(0.21 atm)/[(0.0821 L atm mol-1 K-1)(298K)] = 5.167 x 1018 molecules/cm³

Now, for NO and O3 reaction the rate is; k[NO] [O3]

Thus rate;

= (2 x 10^(-14)cm³/molec.s)( 9.84 x 10^(11)molec/cm³)(1.968 x 10^(12) molec/cm³) = 3.9 molec/cm³.s

For 2NO + O2 → 2NO2 reaction, rate = k[NO]2 [O2]

Thus, rate;

= (2 x 10^(-38) cm^(6)/molec².s )( 1.968 x 10^(12) molec/cm³) ²

(5.167 x 1018 molec/cm³)

= 40,000 molec/cm³.s

Observing the two rates, it's clear that the NO + O3 is the dominant reaction.

6 0
3 years ago
What is the final temperature of the metal​
Natasha_Volkova [10]

Answer:

There is no exact answer for this question tbh.

6 0
3 years ago
Which term describes boron?<br> A. Metal<br> B. Metalloid<br> C. Noble Gas<br> D. Nonmetal
enyata [817]

Answer:

Boron is Nonmetal

Explanation:

hope it's helped

3 0
3 years ago
Climates are classified acording to which two major factors
Oxana [17]
Precipitation and temperature
4 0
3 years ago
A separatory funnel contains the two immiscible liquids water and toluene. Use the given densities to determine which layer is o
damaskus [11]

Answer:

  • Top layer Toluene
  • Bottom layer Water

Explanation:

When two non-miscible liquids are put together, the one with the higher density will be on the bottom, while the one with the lower density will be on top.

Meaning that in this problem's case toluene would be on the top layer and water in the bottom layer.

7 0
2 years ago
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