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Nitella [24]
4 years ago
7

What is a noble gas electron configuration of bismuth?

Chemistry
1 answer:
viva [34]4 years ago
4 0

Answer:

It is [Xe] 4f14 5d10 6s2 6p3 and its atomic number is 83

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How is stoichiometry used to calculate amount of product from amount of reactant?
Nadusha1986 [10]

Answer:

D. The coefficients give the ratio of mole reactant to moles product.

Explanation:

In stoichiometric calculations, the amount of product formed from reactants can be determined.

  • Using this approach, the number of moles of reactants and products on both sides of the expression must be balanced.
  • As a rule of thumb, the coefficients give the ratio of moles of reactants to moles of products.
  • This is very useful in a number of calculations using the stoichiometric approach.
5 0
3 years ago
Which of these is NOT a benefit of nuclear energy?
andreev551 [17]

Answer:

B) Does not contribute to Global Warming.

Explanation:

7 0
3 years ago
True or false. Microwaves heat food evenly.
maria [59]
False. It depends on how much time you put into it like 2 minutes or 30 seconds
4 0
3 years ago
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Why would a pregnant mother need more calcium than a woman her age that is not pregnant?​
inessss [21]

Besides building teeth and bones, calcium also keeps your blood and muscles moving and helps your nerves send messages from your brain to the rest of your body. Your body can't make calcium, so you need to get it from food or supplements. While you're pregnant, try to get at least 1,000 mg of calcium every day.

5 0
3 years ago
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which equation is setup correctly to determine the volume of a 1.5 mol sample of oxygen gas at 22 degrees Celsius and 100 kPa
rjkz [21]
Hello!

We have the following data:


v (volume) = ? (in L)
n (number of mols) = 1,5 mol
T (temperature) = 22 ºC 
First let's convert the temperature on the Kelvin scale, let's see:
TK = TºC + 273,15
TK = 22 + 273,15
TK = 295,15

P (pressure) = 100 kPa → P = 100000 Pa → P ≈ 0,987 atm
R (gas constant) = 0,082 atm.L / mol.K

<span>We apply the data above to the Clapeyron equation (gas equation), let's see:

</span>P*V = n*R*T

0,987*V = 1,5*0,082*295,15

0,987V = 36,30345

V =  \dfrac{36,30345}{0,987}

\boxed{\boxed{V \approx 36,78\:L}} \end{array}}\qquad\checkmark

I hope this helps. =)
4 0
4 years ago
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