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Nadya [2.5K]
4 years ago
6

How many moles are 1.20×10^25 atoms of phosphorous

Chemistry
1 answer:
wlad13 [49]4 years ago
7 0

19.9. There are 19.9 mol P in 1.20×10^25 atoms P.

Use <em>Avogadro’s numbe</em>r to convert atoms of P to moles of P

Moles of P = 1.20 × 10^25 atoms P × (1 mol P/6.022 × 10^23 atoms P)

= 19.9 mol P


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PLEASE HELP!!!
chubhunter [2.5K]

Answer:

Two design criteria for the design of the ammonia making process are;

1) Sustainable hydrogen production by renewable energy

2)  Sustainable use of the ammonia-water thermal absorption cycle to retrieve the ammonia present in the waster water

Explanation:

Ammonia is produced from natural gas in the following process;

H₂ + RSH → RH + H₂S

H₂S + ZnO → ZnS + H₂O (Waste water)

CH₄ + H₂O → CO + 3H₂

CO + H₂O → CO₂ + H₂

Ammonia is then produced by reacting the produced hydrogen with nitrogen in the presence of a catalyst in a process known as the Haber-Bosch process as follows;

3H₂ + N₂ → 2NH₃

The

The design criteria for the design of the ammonia making process therefore as follows;

1) Sustainable use of renewable energy to produce hydrogen gas from the electrolysis of water

2)  Use of the ammonia-water thermal absorption cycle to retrieve the ammonia present in the waster water.

3 0
3 years ago
Which sentences in the passage are true?
user100 [1]

Answer:

First and last sentence .‍♀️

Explanation:

An important thing to keep in mind about the Reading Comprehension section of the GRE as we use PowerPrep online to study is that it is just that—reading comprehension. In other words, as difficult as it may seem, and it can be pretty tricky, the test makers will always give us all the information we need in the passage to answer the question.

7 0
3 years ago
Consider the reaction between 15.0 mL of a 1.00 M aqueous solution of AgNO3 and 10.0 mL of a 1.00 M aqueous solution of K2CrO4.
Neporo4naja [7]

Answer:

Species present in the solution after complete reaction: K^+ ,CrO_4^- , Ag_2CrO_4 , K^+ ,NO_3^-

Explanation:

First balance the chemical equation,

2AgNO_3 + K_2CrO_4 =Ag_2CrO_4 + 2KNO_3

calculation of mili moles of each:

mili mole= volume in ml \times molarity

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mili mole of K2CrO4=10 mili mole;

From balance equation,

2 mili mole  of AgNO3 reacts with 1 mili mole of K2CrO4

hence 1 mili mole  of AgNO3 reacts with 0.5 mili mole of K2CrO4

15 mili mole  of AgNO3 reacts with 7.5 mili mole of K2CrO4

so only 7.5 milimole will be used in the reaction and 2.5 mili mole left in solution.

species present in the solution after complete reaction:

K^+ ,CrO_4^- , Ag_2CrO_4 , K^+ ,NO_3^-

K_2CrO4 , KNO_3 are soluble in water so it will dissociate in the solution

7 0
4 years ago
What are the challenges for a "sustainable" world of lithium ion batteries?
Neporo4naja [7]

The Lithium-ion Battery Problem

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Toxic. ...

Underperform in extreme temperatures. ...

Expensive casing. ...

Expensive to transport.

7 0
3 years ago
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77julia77 [94]
C.) pink <span>In a </span>base<span>, with a pH> 8.2, we would expect the </span>indicator<span> to turn </span>pink. Phenolphthalein<span> is colorless in an acidic or neutral </span>solution<span>; it turns from pink to fuchsia in a basic </span>solution<span>. Cleaners and </span>products<span> containing soaps, are </span>bases<span>.</span>
8 0
3 years ago
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