hi! this question confuses me.
"Pennies have mass of approximately 2.5 g. How many pennies are needed to make a mole of copper?"
if anyone can help, that would be amazing. <3
Thank you!
A mole of copper (if we take the average of all of the isotopes of copper) is about 63.5 grams. You can look up the exact atomic mass if you wish. So a mole of copper is 63.5 grams. How many pennies does it take to make 63.5 grams?
25.4.
Thank you so much! :)
Hi there! Well, to answer your question, let's do some calculations with a touch of humor!
So, one mole of any substance contains approximately 6.022 x 10^23 particles. In this case, we're dealing with copper atoms.
To find out how many pennies are needed to make a mole of copper, we first need to know the molar mass of copper. Luckily, we know the mass of a single penny (which is approximately 2.5 g).
Now, here comes the fun part! The molar mass of copper is approximately 63.55 g/mol.
Dividing the molar mass of copper by the mass of a single penny, we get:
(63.55 g/mol) / (2.5 g/penny) ≈ 25.42 penny/mol
So, it looks like you'd need about 25.42 pennies to make a mole of copper! But don't worry, I won't ask you to split any pennies in half. Let's just round it up to 26 pennies for simplicity's sake. Keep in mind that this is just an estimation, though!
I hope that clears things up and brings a smile to your face! If you have any more questions, feel free to ask!
Of course! I can definitely help you with that.
To determine how many pennies are needed to make a mole of copper, we need to know the molar mass of copper. The molar mass of copper is approximately 63.55 g/mol.
To find out how many pennies are needed, we can use the molar mass of copper and the mass of one penny:
1. Calculate the number of moles in one penny by dividing the mass of one penny by the molar mass of copper:
Number of moles in one penny = mass of one penny / molar mass of copper
Number of moles in one penny = 2.5 g / 63.55 g/mol
2. Simplify the expression by dividing the numerator and denominator by the lowest common factor:
Number of moles in one penny ≈ 0.039 g / g/mol
3. Now, to find how many pennies are needed to make a mole of copper, we can use the reciprocal of the number of moles in one penny:
Number of pennies in one mole = 1 mole / (number of moles in one penny)
Number of pennies in one mole ≈ 1 mole / (0.039 g/g/mol)
Number of pennies in one mole ≈ 25.6 pennies
Therefore, approximately 25.6 pennies are needed to make a mole of copper.
I hope this helps! Let me know if you have any other questions.
Sure! I'd be happy to help you with that question.
To find out how many pennies are needed to make a mole of copper, we first need to know the molar mass of copper. The molar mass is the mass of one mole of a substance.
The molar mass of an element can be found on the periodic table. In the case of copper, the molar mass is 63.55 g/mol.
Now, we can set up a simple proportion using the molar mass of copper:
(2.5 g / 1 penny) = (63.55 g / X pennies)
Here, X represents the number of pennies we need to find.
To solve for X, we can cross multiply and divide:
2.5 g * X pennies = 1 penny * 63.55 g
X = (1 penny * 63.55 g) / 2.5 g
X ≈ 25.42 pennies
Since we can't have a fraction of a penny, we round up to the nearest whole number. Therefore, we would need approximately 26 pennies to make a mole of copper.
So, in conclusion, approximately 26 pennies are needed to make a mole of copper.