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creativ13 [48]
3 years ago
14

(WILL GIVE BRAINLIEST IF YOU ANSWER ALL 4) Chemistry

Chemistry
1 answer:
Kitty [74]3 years ago
5 0

Answer:

See explanations

Explanation:

a. Molarity = moles/Volume in Liters = 5moles/2Liters = 2.5M in NaCl

b. Freezing Pt Depression

     1. Sprinkling salt on icy surfaces

    2. Using antifreeze in automobile cooling systems

    3. <em>Not an application </em>

    4. Using salt to make ice cream

c. pOH = -log[OHˉ] = -log(1x10ˉ¹⁰) = -(-10) = 10 => pH = 14 – pOH = 14 – 10 = 4

d. H₂O + NH₃ => NH₄⁺ + OHˉ => Bronsted Acid is H₂O  (proton donor)

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B because inner core has metal and it’s solid
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stiv31 [10]

The volume of a gas that occupies 9 L at a temperature of 325K is 12.46L.

<h3>How to calculate volume?</h3>

The volume of a given gas can be calculated using the following Charle's law equation:

V1/T1 = V2/T2

Where;

  • T1 = initial temperature
  • T2 = final temperature
  • V1 = initial volume
  • V2 = final volume

  • V1 = 9L
  • V2 = ?
  • T1 = 325K
  • T2 = 450K

9/325 = V2/450

325V2 = 4050

V2 = 4050/325

V2 = 12.46L

Therefore, the volume of a gas that occupies 9 L at a temperature of 325K is 12.46L.

Learn more about volume at: brainly.com/question/2817451

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Monica [59]
The only right answer is B
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3 years ago
11) How many grams of NH, can you make if you use 23 moles of nitrogen gas?
natita [175]

782g

Explanation:

Given parameters:

Number of moles of N₂ = 23moles

Unknown:

Mass of NH₃ = ?

Solution:

We first obtain the balanced chemical equation for this reaction;

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From the equation we see that;

     1 mole of N₂ produced 2 moles of ammonia

    23 mole of N₂ will yield 2 x 23 = 46moles of ammonia

Now ;

mass of ammonia = number of moles x molar mass

Molar mass of NH₃ = 14 + 3(1) = 17g/mol

 Mass of ammonia = 46 x 17 = 782g

learn more:

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cluponka [151]

Answer:

Photosynthesis process

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Photosynthesis removes carbon dioxide naturally — and trees are especially good at storing carbon removed from the atmosphere by photosynthesis.

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