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krek1111 [17]
3 years ago
6

Exercícios: Fazer a distribuição em subníveis, dizer qual o de maior energia e a configuração da camada de valência; fazer a dis

tribuição em camadas: 1 - 12 Mg (Magnésio) 2 - 35 Br (Bromo) 3 - 47 Ag (Prata) 4 - 55 Cs (Césio) 5 – 14 Si (Silício) 6 – 30 Zn (Zinco) 7 – 92 U (Urânio) 8 – 19 K (Potássio)
Chemistry
1 answer:
AURORKA [14]3 years ago
6 0
Can u write that in English
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What is the density of a gas at STP that has a molar mass of 50.0 g/mol?
Flura [38]

Answer:

2.232 g/L

Explanation:

Assuming 1 mol, volume at STP is 22.4 L so you simply divide 50g by 22.4 L to get density

4 0
3 years ago
A chemist adds 0.50L of a 0.485 M copper(II) sulfate CuSO4 solution to a reaction flask. Calculate the millimoles of copper(II)
den301095 [7]

Explanation:

It is given that volume is 0.50 L and molarity is 0.485 M. Hence, number of millimoles will be calculated as follows.

               Number of millimoles = Molarity × Volume

As there are 1000 mL in 1 L. So, 0.50 L equals 500 mL.

Therefore, putting the given values into the above formula as follows.

             Number of millimoles = Molarity × Volume

                                                 = 0.485 M × 500 mL      

                                                 = 242.5

Thus, we can conclude that 242.5 millimoles of copper(II) sulfate has been added by the chemist to the flask.                                      

4 0
3 years ago
A hypothesis is best written as ?
Nezavi [6.7K]

Answer:

A good experimental hypothesis can be written as an if, then statement to establish cause and effect on the variables. If you make a change to the independent variable, then the dependent variable will respond

8 0
2 years ago
Which term identifies a type of organic reaction ?
Masteriza [31]
Esterification i think
8 0
3 years ago
Read 2 more answers
PLEASE ANSWER
lana [24]

Answer: option D. Their speed in a vacuum

Explanation:

Electromagnetic waves all have same speed in vacuum. This speed has been calculated to be 3x10^8m/s.

3 0
3 years ago
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