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1 year ago

How many moles are in 2.00g of beryllium chloride

Chemistry

2 answers:

lisabon 2012 [21]1 year ago

6 0

Answer:

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Neporo4naja [7]1 year ago

6 0

Answer:

.025 moles

Explanation:

Be Cl2 is beryllium chloride

Be = 9.0121 gm/mole

Cl = 35.45 gm mole

Be Cl2 = 79.91 gm/mole

2 gm / 79.91 gm/mole = .025 moles

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Give the n and l values and the number of orbitals for sublevel 5g.

Pepsi [2]

The n and l values and the number of orbitals for sublevel 5g is :

5g shell , n= 5 subshell g , l = 4, Number of orbitals for sublevel = 9.

There are total four quantum numbers:

1) Principal quantum number , n

2) Angular quantum number , l

3) Magnetic quantum number , ml

4) spin quantum number , ms

For 5g shell, n = 5

subshell g , l = 4 ....0 - s , 1 - p , 2 - d, 3 - f, 4 -g

number of orbitals in subshell = (2l + 1) ( 2×4 + 1) = 9

Thus, The n and l values and the number of orbitals for sublevel 5g is :

5g shell , n= 5 subshell g , l = 4, Number of orbitals for sublevel = 9.

To learn more about quantum numbers here

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10 months ago

Work=? time=5s Power = 40w

antiseptic1488 [7]

Answer:

200 J

Explanation:

Work = Power x time

Work = (40w)(5s)

Work = 200 J

5 0

2 years ago

WHAT BLOCK IN THE PICTURE HAS:

GREYUIT [131]

Answer:

the highest is "A" and the lower is "C"

7 0

2 years ago

Helpppppppp plzzzzzz asaaaapppp

9966 [12]

Answer:

Alright, the first thing we have to do is to balance the chemical equation

2Na3N -----> 6Na + 1N2

We have 60g of Na3N, we convert them into moles by dividing the mass of the compound by the molar mass.

Molar mass of Na3N = (22.98 x 3) + (14) = 82.94g/mol

60 = 0.72341451651 moles of Na3N

82.94

Now because we did the balanced equation, we know the mole to mole ratio of Na3N to N2 would be 2:1, so in order to get the moles of N2 you have to divide the moles of Na3N by 2

0.72341451651 moles/2 = 0.361707258 moles of N2

Now that we have the moles of N2, we just have to determine the mass of it in grams. In order to do that, just multiply the moles by the molar mass of N2 (28g/mol)

0.361707258 x 28 = 10.13g of N2

Therefore the decomposition of 60g of Na3N would result in 10.13g of N2 (nitrogen gas)

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2 years ago

Is the element Na a metal or non metal

Bond [772]

Answer:

Metal

Explanation:

Na or sodium though soft... it is a metal...

8 0

2 years ago