Gold, platinum and silver

How many moles of tin atoms are pure tin cup with a weight of 39.3?

How many moles of tin atoms are pure tin cup with a weight of 39.3

Gosh - Please answer I really hope I read your initial response and see how the mine more as now my answer pulled -.- ^ Answer: 0.331 mol note of tin in my work * means multiply and ^ means power of. well basically if you have 6.02 * 10 ^ 23 of something yourself 1 mol of things. The atomic weight in the left hand of each element of the periodic table gives the molar mass, which is the mass of 1 mole of this element. For example, carbon has a molecular weight of 12011, it means that 12,011 grams for 1 mole of carbon [C] (12.011 g / mol) And now, how many moles are in 39.3 grams of tin? Very easy. You will find that the chemistry students in classes are given a basic formula to find the number of moles, which is: --- Number of moles = given mass / molar mass --- So, to answer this issue and find the number of moles, we need to find the given mass - this is simply the mass that has been allocated to question, which is 39.3 gram tin. Also need to know the molar mass, located in the left corner of the element. Tin [Sn] molar mass is 118.710. Under both the winning formula: Number of moles = 39.3 / 118,710 Number of moles = 0.331058883 not - Remember the faces around less significant in the functioning of the issue. The development, which was (39.3 / 118.71) 39.3 has 3 significant figures, and 118.70 has 5 significant figures. It Always take the least FOUND. The minimum is 3, so we must respond to this cycle of 3 significant figures. Will: 0331 So 0.331 moles of tin atoms are pure tin cup with a weight of 39.3. hope I helped and good luck!

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