When a voltaic cell operates, ions move through a salt bridge. The presence of the salt bridge completes the circuit because it promotes ion flow. It maintains the charges balance since the electron are moving from a half cell to another.
Answer:
The answer to your question is: 2.75 x 10 ²¹ atoms
Explanation:
Data
H₃PO₄
mass = 0.1488 g
MW H₃PO₄ = 3 + 31 + (16 x 4) = 98g
98 g of H₃PO₄ ------------------ 3 g of H₂
0.1488 g H₃PO₄ --------------- x
x = 0.0046 g of H₂
1 g of H₂ ------------------- 6.023 x 10²³ atoms
0.0046 g of H₂ -------------- x
x = (0.0046 x 6.023 x 10²³) / 1
x = 2.75 x 10 ²¹ atoms
The molecular weight of methane (CH4) is 16.04 g / mol.
Therefore:
22.8 grams x (mol) / 16.04 g =
(Grams unit cancel out)
1.42 mol
<u>Answer:</u>
<em>The final volume must be 400 mL.</em>
<em></em>
<u>Explanation:</u>
Let us assume the Initial volume as 100ml
Using dilution factor formula
So,
Thus, the final volume must be 400 mL.
A.
An amine refers to a nitrogen-based compound. Since A is the only option with nitrogen, that would be the answer.
