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8090 [49]
3 years ago
13

Is butter melting onto toast a chemical or a physical

Chemistry
1 answer:
jonny [76]3 years ago
6 0

Answer: "physical change" .

________________________________________________________

This would be a "physical change" . ________________________________________________________

<u>Note</u>: This would change from a "solid" to a "liquid" / mere rearrangement of molecules/ NOT a new chemical substance—hence, a "physical change".

________________________________________________________

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A mixture of krypton and argon gas is expanded from a volume of 88.0L to a volume of 100.0L, while the pressure is held constant
Firlakuza [10]

Answer:

-3.28 × 10⁴ J

Explanation:

Step 1: Given data

  • Pressure exerted (P): 27.0 atm
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Step 2: Calculate the work (w) done by the gaseous mixture

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w = -27.0 atm × (100.0 L - 88.0 L)

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Step 3: Convert w to Joule (SI unit)

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-324 atm.L × 101.325 J/1 atm.L = -3.28 × 10⁴ J

5 0
3 years ago
La masa molar para el siguiente compuesto: CuOH, si sus masas atómicas son Cu=64 g/mol; O=16 g/mo e H=1 g/mol
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..,,,,,

4 0
3 years ago
Read 2 more answers
Select all of the following which are characteristics of metals.
shtirl [24]

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Explanation:

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