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ipn [44]
3 years ago
6

Which of these observations is not an example of a physical property of matter? A. The density of sea water is measured to be 1.

027 g/cm3.
B. Gold melts at 1064 ºC.
C. There are usually at least three different minerals in a piece of granite.
D. Your mother's best silver tarnishes.
Chemistry
2 answers:
Black_prince [1.1K]3 years ago
7 0

Answer:

D. Your mother's best silver tarnishes.

Explanation:

Hello,

In this case, the answer is: D. Your mother's best silver tarnishes, since tarnishing is a process carried out due to the effect of an external condition (aging, wearing out and others), not a property. Properties are actually descripted on options A, B and C as they describe the material in terms of its nature.

Best regards.

MAVERICK [17]3 years ago
4 0
D... i feel bad that you didnt understand this...
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3 years ago
Express the following in liters at STP:<br><br><br><br> 6.62 x 10-3 moles HF
serious [3.7K]

Answer:

The volume of 6.62×10⁻³moles of HF at STP is 148.38×10⁻³ L

Explanation:

Given data:

Number of moles of HF =  6.62×10⁻³ mol

Volume of HF in litter at STP = ?

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

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V = volume

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Standard pressure = 1 atm

Now we will put the values in formula.

1 atm × V = 6.62×10⁻³mol ×0.0821 atm.L/ mol.K   × 273 K

V = 6.62×10⁻³mol ×0.0821 atm.L/ mol.K   × 273 K  / 1 atm

V = 148.38×10⁻³ L

Thus, the volume of 6.62×10⁻³moles of HF at STP is 148.38×10⁻³ L.

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