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LiRa [457]
4 years ago
6

Lithium (Li) atoms have ______ orbitals.

Chemistry
1 answer:
Hoochie [10]4 years ago
5 0

Answer:

there are 3 electrons in a lithium atom. Looking at the picture, you can see there are two electrons in shell one and only one in shell two.

Explanation:

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You have 846 ml of 3.95 M HCl. Using a volumetric pipet, you take 268 ml of that solution and dilute it to 803 ml in a volumetri
Anettt [7]

Answer: The concentration of hydrochloric acid in the final solution is 0.72 M

Explanation:

According to the dilution law,

M_1V_1=M_2V_2

where,

M_1 = molarity of stock solution = 3.95 M

V_1 = volume of stock solution = 268 ml

M_2 = molarity of diluted solution = ?

V_2 = volume of diluted solution = 803 ml

3.95\times 268=M_2\times 803

M_2=1.32M

Next, you take 100.00 ml of that solution and dilute it to 184 ml in a volumetric flask.

According to the dilution law,

M_1V_1=M_2V_2

where,

M_1 = molarity of stock solution = 1.32 M

V_1 = volume of stock solution = 100 ml

M_2 = molarity of diluted solution = ?

V_2 = volume of diluted solution = 184 ml

1.32\times 100=M_2\times 184

M_2=0.72M

Thus concentration of hydrochloric acid in the final solution is 0.72 M

7 0
4 years ago
What’s the molar mass of Lead-208
Degger [83]
Lead is a basic metal and almost 11 isotopes of Lead are reported. The isotopes with greater natural abundance are as follow;

1) ²⁰⁸Pb with abundance 52.4 %

2) ²⁰⁶Pb with abundance 24.1 %

3) ²⁰⁷Pb with abundance 22.1 %

4) ²⁰⁴Pb with abundance 1.4 %

Molar mass of ²⁰⁸Pb:

Molar mass of any element is the total of number of protons, neutrons and electrons.
As, number of protons in Lead are 82 then in ²⁰⁸Pb isotope number of neutrons are...

# of Neutrons  =  M.mass - # of protons

# of Neutrons  =  208 - 82

# of Neutrons  =  126

Result:

Molecular Mass of Lead (²⁰⁸Pb) is 208 amu.

# of Protons in ²⁰⁸Pb  = 82

# of Neutrons in ²⁰⁸Pb = 126
7 0
4 years ago
DETERMINE THE MASS 1.366 mol of NH3
STALIN [3.7K]
Determine the mass of each of the following amounts. a. 1.366 mol of
NH3
, b. 0.120 mol of glucose,
C6H12O6
, c. 6.94 mol barium chloride,
BaCl2
, d. 0.005 mol of propane,
C3H8
4 0
3 years ago
Consider the procedures in a simple experiment used to demonstrate the behavior of gases
Agata [3.3K]

Answer:

B, C, E

Explanation:

did usatestprep

7 0
3 years ago
How many centuries are in a foot ?
N76 [4]

Answer:

30 centimeters

Explanation:

I really hope you meant centimeters or I'm gonna look pretty dumb

5 0
3 years ago
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