# I need some help on this Chemistry question can any one help please!! I need to find the cost of a single atom of aluminum [closed]

A 75 ft2 roll of aluminum foil costs $3.79. A 12"x12" pieces has a mass of 1.0 g. How much does a single atom of aluminum cost, in dollars? i need to show all my work i am so lost. ## closed as off-topic by matt_black, A.K., user55119, Avnish Kabaj, TyberiusNov 27 '18 at 19:00 This question appears to be off-topic. The users who voted to close gave this specific reason: If this question can be reworded to fit the rules in the help center, please edit the question. ## 1 Answer We are given that 75 square feet costs \$3.79, so 1 square foot costs \$3.79 divided by 75, or just over 5 cents. We are also given the mass of one square foot as 1.0g, so from the atomic weight of aluminium, one mole costs approximately 27 times this, or \$1.36. One mole is $$6.022\times10^{23}$$ items (in this case atoms), so how much does an atom cost?

• could you show me how you got the 27 times and $1.36. im sorry im so lost – user70703 Nov 27 '18 at 18:12 • The atomic mass of aluminum is$26.98 \text{ g/mole }\approx 27$– MaxW Nov 28 '18 at 8:38 • thanks for fixing the formatting, MaxW - I tried the "/$" but that kept messing up for me. – sjb2812 Nov 28 '18 at 8:50