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Lesechka [4]
3 years ago
5

Rank the elements b, be, n, c, and o in order of increasing first ionization energy. (use the appropriate <, =, or > symbo

l to separate substances in the list.)
Chemistry
1 answer:
Dafna11 [192]3 years ago
6 0
Be, B, C, N (going from smallest to biggest)
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A solution of potassium chlorate, KCIO3, has 20 grams of the
natima [27]

C) 10 grams

Explanation:

Potassium chlorate (KCIO₃) have a solubility in water at 70 °C of 30 grams in 100 grams of water.

If our solution have already 20 grams of potassium chlorate salt dissolved that means we need another 10 grams of potassium chlorate to reach the saturation point.

Learn more:

Potassium chlorate solubility in water

brainly.com/question/10140327

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3 years ago
The half-life of 131I is 8.021 days.What fraction of a sample of 131I remains after 24.063 days
Leno4ka [110]
24.063/8.021 = 3 half lives
(1/2)^3 =1/8 
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Worth 15 points!!! Choose ALL of the examples of a heterogeneous mixture, where the components are unevenly spread. THIS IS A MU
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Answer:

A

B

C

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A B and C are heterogeneous because they don’t have all the same components throughout. D is homogeneous because kool aid dissolves into the water.

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3 years ago
Now they feel it is best to have you identify an unknown gas based on its properties. Suppose 0.508 g of a gas occupies a volume
pishuonlain [190]

Answer: Option (b) is the correct answer.

Explanation:

The given data is as follows.

             mass = 0.508 g,               Volume = 0.175 L

             Temperature = (25 + 273) K = 298 K,       P = 1 atm

As per the ideal gas law, PV = nRT.

where,  n = no. of moles = \frac{mass}{\text{molar mass}}

Hence, putting all the given values into the ideal gas equation as follows.

               PV = \frac{mass}{\text{molar mass}} \times RT            

           1 atm \times 0.175 L = \frac{0.508 g}{\text{molar mass}} \times 0.0821 L atm/ K mol \times 298 K  

                            = 71.02 g

As the molar mass of a chlorine atom is 35.4 g/mol and it exists as a gas. So, molar mass of Cl_{2} is 70.8 g/mol or 71 g/mol (approx).

Thus, we can conclude that the gas is most likely chlorine.

4 0
3 years ago
Which of these factors should remain constant in a simulation of natural
musickatia [10]
A is your answer The ratio of females to males
8 0
2 years ago
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