3 years ago

Explain how the periodic table can help in writing electron configurations

Chemistry

1 answer:

Hoochie [10]3 years ago

4 0

Period : the no. of electron shells
group: the last no. of electron configuration

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At 47c a gas has a pressure of 140kpa. The gas is cooled until the pressure decreases to 105kpa. If the volume remains constant,

IgorC [24]

Answer:

The final temperature is equal to 240 K or -33.15°C

Explanation:

Given that,

Initial temperature of the gas, T₁ = 47°C = 320 K

Initial pressure, P₁ = 140 kpa

Final pressure, P₂ = 105 kpa

We need to find the final temperature if the volume remains constant. The relation between temperature and pressure is given by :

$P\propto T$

$\dfrac{P_1}{P_2}=\dfrac{T_1}{T_2}\\\\T_2=\dfrac{P_2T_1}{P_1}\\\\T_2=\dfrac{105\times 320}{140}\\\\T_2=240\ K\\\\T_2=-33.15^{\circ} C$

So, the final temperature is equal to 240 K or -33.15°C.

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A sample of hydrogen gas is placed in a 0.500 L container at 295K. The gas pressure is 1.442 bar. How many moles of H2 gas are i

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0.0294

Explanation:

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When the pressure of a gas doubles, the new volume

s344n2d4d5 [400]

Answer:

yes it does

Explanation:

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1. I am in group two period three. What element am I?<br> A Ti<br> B, C<br> C. Ca<br> D. WE

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What is the empirical formula for a compound if a sample contains 3.72 g of P and 21.28 g of Cl

fenix001 [56]

M(P)=3.72 g
M(P)=31 g/mol

m(Cl)=21.28 g
M(Cl)=35.5 g/mol

n(P)=m(P)/M(P)
n(P)=3.72/31=0.12 mol

n(Cl)=m(Cl)/M(Cl)
n(Cl)=21.28/35.5=0.60 mol

P : Cl = 0.12 : 0.60 = 1 : 5

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