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Dmitry [639]
3 years ago
12

Not too sure about this one

Chemistry
1 answer:
Kazeer [188]3 years ago
8 0

Answer:

It should be polarity

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Somebody help with A B and C please will give brain thanks
Norma-Jean [14]

Answer:

we cant see a b or c

Explanation:

7 0
2 years ago
A gas mixture contains HBr, NO2, and C2H6 at STP.If a tiny hole is made in the container, which gas will effuse fastest?Which ga
MakcuM [25]

Explanation:

Molar mass of HBr = 81 g/mol

Molar mass of nitrogen dioxide gas = 46 g/mol

Molar mass of ethane = 30 g/mol

Graham's Law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows the equation:

\text{Rate of diffusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}

So, the gas with least molar mass will effuse out fastest from the container and that is ethane gas.

The formula for average kinetic energy is:

K.E=\frac{3}{2}kT

where,

k = Boltzmann’s constant = 1.38\times 10^{-23}J/K

T = temperature = 273.15 K ( at STP)

As we can see from the formula that kinetic energy depends upon only temperature of the gas molecule.

So, from this we can say that all the gas molecules have the same average kinetic energy at this temperature.

5 0
3 years ago
From what philosophical tradition is chemistry said to have emerged?
EastWind [94]
Do you have the options?
7 0
3 years ago
An inflated balloon is left outside overnight. initially it has a volume of 1.84 L when the temperature is 293.4 K and the press
Mrac [35]

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3 years ago
The mass of an unidentified rock is 40 grams. Students determine the volume of the rock by placing the rock in a cylinder with w
insens350 [35]

Answer:

A. Coal

Explanation:

Volume_{rock} = water displaced by rock

Water displaced by rock = volume of water after rock is dropped into the cylinder - volume of water before the rock was dropped into the water

Water displaced by the rock = 180 ml - 150 ml = 30 ml

Volume_{rock} = 30 ml

Density of rock:

40 grams => 30 ml

x grams => 1 ml

Cross multiply

1*40 = 30*x

40 = 30x

40/30 = 30x/30

1.3 = x

Density of rock = 1.3 g per 1 ml

Recall: 1 ml = 1 cm³

Therefore,

Density of the rock = 1.3 g/cm³

1.3 g/cm³ falls within the range of 1.1 - 1.4 g/cm³

Therefore, the rock is identified as Coal.

7 0
3 years ago
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