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2 years ago

What is the type of intermolecular force in methylated spirits

1 answer:

7 0

. Methylated spirits have ethanol as a base but may include methyl alcohol (methanol) as part of the denaturing process.

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If the dartboard below is used to model an atom, which subatomic particles would be located at Z? *

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I know that protons and neutrons are located at the center of an atom, so the correct answer is D

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3 years ago

During most nuclear reactions A. heat energy is produced but not light energy. B. energy is transferred out of the system. C. en

aniked [119]

Answer:

A)heat energy is produced but not light energy

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3 years ago

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Ceres is a dwarf planet located in the main asteroid belt.

Pie

Yes that is correct, it lies between the orbits of Mars and Jupiter and is the largest in the belt.

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3 years ago

If the humidity in a room of volume 410 m3 at 25 ∘C is 70%, what mass of water can still evaporate from an open pan? Express you

Keith_Richards [23]

Answer:

$m=1864.68\ g$

Explanation:

Given:

volume of air in the room, $V=410\ m^3$

temperature of the room, $T=25+273=298\ K$

Saturation water vapor pressure at any temperature T K is given as:

$p_{sw}=\frac{e^{(77.3450 + 0.0057\times T - \frac{ 7235}{T} )}}{T^{8.2}}$

putting T=298 K we have

$p_{sw}=3130\ Pa$

The no. of moles of water molecules that this volume of air can hold is:

Using Ideal gas law,

$P.V=n.R.T$

$n=\frac{P_{sw}.V}{R.T}$

$n=\frac{3130\times 410}{8.314\times 298}$

$n=518\ moles$ is the maximum capacity of the given volume of air to hold the moisture.

Currently we have 80% of n, so the mass of 20% of n:

$m=(20\%\ of\ n)\times M}$

where;

M= molecular mass of water

$m=0.2\times 518\times 18$

$m=1864.68\ g$ is the mass of water that can vaporize further.

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2 years ago

What is maxwell’s theory about atoms?

Inga [223]

To put it another way, stationary states are the same as time-independent currents. Moreover, such currents are not sources of radiation, according to Maxwell's theory. The atom will remain in its natural state and will not collapse due to a shortage of energy.

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2 years ago

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