Hint: A mole is the entity that denotes 6.022×1023 particles.
Answer:
8
Explanation:
1 copper atom has 29 protons so, 1
proton we can say has 1/29 copper atoms
then, 232 protons will make (1/29)×232 copper atoms which is equal to 8
Answer:
See explanation
Explanation:
On a certain day, our teacher came to class with a container having some salt, some sand and a few pieces of iron in it. She was about to introduce a lesson on separation of mixtures.
Then she held a large bar magnet close to the mixture and shook it, the pieces of iron were attracted by the magnet and separated from the mixture.
Next, she poured some water into the mixture and the salt dissolved. She got a filter paper and separated the solution from the sand.
Then she heated the solution to dryness in an open crucible and the salt was recovered.
Answer:
Explanation:
Hello,
At first, it turns out convenient to compute the total moles of sodium that will be dissolved into the solution by considering the added amounts of sodium bromide and sodium sulfate:
Once we've got the moles we compute the final volume via:
Thus, the molarity of the sodium atoms turn out into:
Now, we perform the same procedure but now for the bromide ions:
Finally, its molarity results:
Best regards.