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3 years ago

If I were to draw an electron configuration for a bromine (Br) atom, what is the highest energy level I would reach?

Chemistry

1 answer:

dimaraw [331]3 years ago

3 0

Answer:

Explanation:

3s < 3p < 4s < 4p

This arrangement is in order of increasing energy.

This explains that, 4p is the highest energy level you can reach.

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Density = 11g/cm3 volume = 2cm3 what is the mass

jolli1 [7]

<h2>Question:-</h2>

Density = 11g/cm³, volume = 2cm³. What is the mass ?

<h2>Solution:-</h2>

We know,

${ \boxed{\bf{\rm \red {Mass \: = \: Density \: × \: Volume}}}}$

So, Mass = 11g/cm³ × 2cm³

Mass = 22 g

<h3>The mass is 22 g. [Answer]</h3>

3 0

3 years ago

How many grams of NaOH are produced with the reaction of 5.00 moles of water? *

Andre45 [30]

Answer:

200 grams of NaOH are produced with the reaction of 5.00 moles of water

Explanation:

First of all you apply a rule of three to know the amount of moles of NaOH as follows: if 2 moles of water produce 2 moles of NaOH, 5 moles of water how many moles would they produce?

$moles of NaOH=\frac{5 moles of water*2 moles of NaOH}{2 moles of water}$

moles of NaOH= 5

Being:

Na: 23 g/mole
O: 16 g/mole
H: 1 g/mole

the molar mass of NaOH is: 23 g/mole + 16 g/mole + 1 g/mole= 40 g/mole

Then a rule of three applies as follows: if in 1 mole there are 40 g of NaOH, in 5 moles how much mass is there?

$mass=\frac{5 moles*40g}{1 mole}$

mass= 200 g

200 grams of NaOH are produced with the reaction of 5.00 moles of water

4 0

4 years ago

Marissa is adding numbers in her head. Which part of her brain is she using? 1.cerebrum 2.cerebellum 3.brain stem

inn [45]

Cerebrum is the part of the brain that we use for imagination, thinking, judgement etc. It is also the largest part of the brain

Cerebellum is in charge of stuff like the spinal cord

and the brain stem is the part of the brain that helps us move. (if you watch the walking dead in one of the episodes it teaches this xD)

hope this helped (:

6 0

3 years ago

Read 2 more answers

A 10 L mixture is made up of 40% antifreeze. How much of the mixture needs to be removed and filled with pure antifreeze to reac

malfutka [58]

Answer:

3.3 liters of the mixture is needed to be removed and filled with 3.33 liters pure antifreeze to reach a concentration of 60% antifreeze.

Explanation:

A 10 L mixture is made up of 40% antifreeze.

Initial Volume of antifreeze in 40% mixture = 40% of 10 L = 4L

Let volume of pure antifreeze added = x

Volume of antifreeze removed = 40% of x= 0.4 x

Volume of antifreeze in 60% mixture = 60% of 10 L = 6 L

Volume of antifreeze left after removal of 0.4 x L of antifreeze and addition of x L of pure antifreeze will be equal to 6 L of antifreeze in the final solution.

4L - (0.4 x ) + x = 6L

x = 3.33 L

3.3 liters of the mixture is needed to be removed and filled with 3.3 liter pure antifreeze to reach a concentration of 60% antifreeze.

8 0

4 years ago

Lodine is 80% 1271, 17% 1261, and 3% 1281. Calculate the average atomic mass of iodine.

irakobra [83]

The atomic mass of iodine is 126.90447 u

4 0

3 years ago