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3 years ago

1s2 2s2 2p6 3s2 3p6 is the electron configuration for

Chemistry

2 answers:

faltersainse [42]3 years ago

4 0

Answer: Argon (Ar)

Explanation:

The reason why it is Argon is because when you add the electrons 2+2+6+2+6, there will be 18 electrons total and the number 18 is also from the atomic number. I just learned this a while ago and remembered how to do it since you need help with this. I hope this helps and have a good day!

kvasek [131]3 years ago

3 0

Answer: The electron configuration is for the element Argon

Explanation: 3p6 is all the way on the right side of the periodic table in the third row or period

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How does the number of coupons you use affect the amount of money you save?

slega [8]

Using coupons seems like an old-fashioned, time-consuming way to save a few cents on the products you buy at the grocery store. After all, most coupons don't usually have a face value of more than $1 and, quite often, they're worth far less. But done properly, couponing can save you thousands of dollars every year.

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3 years ago

You perform a distillation to separate a mixture of propylbenzene and cyclohexane, and you obtain 2.9949 grams of cyclohexane (d

Romashka-Z-Leto [24]

Answer:

66.67%

Explanation:

From the given information:

mass of cyclohexane = 2.9949 grams

density of cyclohexane = 0.779 g/mL

Recall that:

Density = mass/volume

∴

Volume = mass/density

So, the volume of cyclohexane = 2.9949 g/ 0.779 g/mL

= 3.8445 mL

Also,

mass of propylbenzene = 1.6575 grams

density of propylbenzene = 0.862 g/mL

Volume of propylbenzene = 1.6575 g/ 0.862 g/mL

= 1.9229 mL

The volume % composition of cyclohexane from the mixture is:

$= (\dfrac{v_{cyclohexane}}{v_{cyclohexane}+v_{propylbenzene}})\times 100$

$= (\dfrac{3.8445}{3.8445+1.9229})\times 100$

$= (\dfrac{3.8445}{5.7674})\times 100$

= 66.67%

6 0

3 years ago

How many milliliters of 0.0630 m edta are required to react with 50.0 ml of 0.0110 m cu2 ?

gizmo_the_mogwai [7]

Moles Cu+2 = M * V
= 0.05 L * 0.011 m
= 0.00055 moles

when the molar ratio of Cu2+: EDTA = 1:1 so moles od EDTa also =0.00055 moles

and when the Molarity of EDTa = 0.0630 M

∴ Volume of EDTA = moles / Molarity
= 0.00055 / 0.0630
= 0.0087 L = 8.7 L

4 0

3 years ago

Complete the following conversion.<br> 25.0 °C =<br> °F

olga nikolaevna [1]

Answer: 25°C=77°F

Explanation:

FORMULA

F=9/5 C+32

-----------------------------------

Given: C=25°

F=9/5 C+32

F=9/5 (25)+32

F=45+32

F=77°

Hope this helps!! :)

Please let me know if you have any question

4 0

3 years ago

Read 2 more answers

In the chemical equation Zn + 2HCl ZnCl2 + H2, the reactants are

Rudik [331]

Answer : The correct option is A.

Explanation :

The given chemical reaction is,

$Zn+2HCl\rightarrow ZnCl_2+H_2$

In the reaction, Reactants are present on the left side of the arrow and products are present on the right side of the arrow.

Reactants are those which takes part in and undergoes change during the reaction.

Products are those which are formed during the reaction.

In the given reaction, zinc react with hydrochloric acid to form zinc chloride and hydrogen gas.

Therefore, the reactants are zinc and hydrochloric acid.

4 0

3 years ago

Read 2 more answers