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Darya [45]
4 years ago
6

Which elements in the periodic table are metalloids or have semimetallic properties

Chemistry
1 answer:
Marysya12 [62]4 years ago
8 0
Hi There! :)

<span>Which elements in the periodic table are metalloids or have semimetallic properties?

</span><span>Boron, Silicon, Germanium, Arsenic, Antimony, and Polonium are all metalloids. Some people consider Astatine a metalloid</span>
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In a closed container with a fixed volume, when the temperature of a gas doubles, the pressure of the gas is?
nevsk [136]

Answer:

The pressure of the gas is:

<u>Doubled</u>

<u></u>

Explanation:

Byole's Law  = Pressure of fixed amount of gas is inversely proportional to Volume at constant temperature.

PV = k = constant

P1V1 = P2V2

<u>Charle's Law: </u> The volume of ideal gas at fixed pressure is directly proportional to Pressure.

V/T = constant

V1/T1 = V2/T2

On combinig the charles and byole's law , we get:

\frac{P_{1}V_{1}}{T_{1}}=\frac{P_{2}V_{2}}{T_{2}}

Now , According to question :

V2 = V1

T2 = 2(T1)

We have to find the relation between the pressure :

insert the value in the equation

\frac{P_{1}V_{1}}{T_{1}}=\frac{P_{2}V_{2}}{T_{2}}

\frac{P_{1}V_{1}}{T_{1}}=\frac{P_{2}V_{1}}{2T_{1}}

V1 and V1 & T1 and T1 cancels each other,

So we get

P2 = 2 P1

So the new pressure is double of the original pressure

3 0
3 years ago
A 2.0 L party balloon at 98 kPa is taken to the top of a mountain where the pressure is 75
PtichkaEL [24]

Answer:

2.61 L

Explanation:

p1v1 = p2v2

p1v1 / p2 = v2

98 * 2 / 75 = v2 = 2.61 L

7 0
2 years ago
HELP FAST 10 POINTS
IrinaK [193]

Steel wool rusts faster because more Surface Area is exposed in a steel wool compared to the iron nail and more surface area means faster rusting rates

have a nice day! (^o^)

7 0
3 years ago
A 29.0-g sample of water at 290. K is mixed with 51.0 g water at 300. K. Calculate the final temperature of the mixture assuming
zubka84 [21]
Let me conduct my research
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2 years ago
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Ammonia, chlorine and hydrogen chloride cannot be collected by displacement of water. Why?​
Archy [21]

Answer:

Yes

Explanation:

Because they are lighter than water

4 0
3 years ago
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