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Gre4nikov [31]
3 years ago
15

Mixing two clear liquids results in the formation of a whit solid. Is this a physical or chemical change?

Chemistry
1 answer:
aalyn [17]3 years ago
8 0

Answer:

Chemical Change

Explanation:

It became white and became solid which makes it a chemical change.

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A piece of lumber is 7.60cm long. What is it’s length in millimetres and in inches?
MrRissso [65]

Explanation:

Since 10mm is 1cm

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4 0
2 years ago
Answer ASAP please!!!!!!
Oksi-84 [34.3K]

Answer:

They fall slower.

Explanation:

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saw5 [17]

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3 0
2 years ago
Read 2 more answers
Calculate the pressure in atm of .68 mol of H at 298K and occupying 4.5 L
inessss [21]

Answer:

3.7 atm

General Formulas and Concepts:

<u>Atomic Structure</u>

  • Moles

<u>Gas Laws</u>

Ideal Gas Law: PV = nRT

  • <em>P</em> is pressure
  • <em>V</em> is volume
  • <em>n</em> is number of moles
  • <em>R</em> is gas constant
  • <em>T</em> is temperature

Explanation:

<u>Step 1: Define</u>

<em>Identify variables</em>

[Given] <em>n</em> = 0.68 mol H

[Given] <em>T</em> = 298 K

[Given] <em>V</em> = 4.5 L

[Given] <em>R</em> = 0.0821 L · atm · mol⁻¹ · K⁻¹

[Solve] <em>P</em>

<em />

<u>Step 2: Find Pressure</u>

  1. Substitute in variables [Ideal Gas Law]:                                                          P(4.5 L) = (0.68 mol)(0.0821 L · atm · mol⁻¹ · K⁻¹)(298 K)
  2. Multiply [Cancel out units]:                                                                               P(4.5 L) = (0.055828 L · atm · K⁻¹)(298 K)
  3. Multiply [Cancel out units]:                                                                               P(4.5 L) = 16.6367 L · atm
  4. Isolate <em>P</em> [Cancel out units]:                                                                             P = 3.69705 atm

<u>Step 3: Check</u>

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

3.69705 atm ≈ 3.7 atm

5 0
3 years ago
The substance in the glass is an mixture , element, compound, or atom
Likurg_2 [28]
Its a mixture or a atom
3 0
4 years ago
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