Chemistry

Chemistry, 19.07.2019 00:00, Thiskid100

How many atoms are present in 34.96 moles of mg

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Chemistry, 03.07.2019 14:50, taylorruiz16

Mole-atom conversions 1. how many moles are 1.55 x 1027 atoms of zinc (zn)? 2. how many atoms are in 25.0 moles of calcium (ca)? 3. how many atoms are in 0.35 moles of carbon (c)? 4. how many moles are 7.6 x 1024 atoms of helium? mole-mass conversions how many moles in 28.o grams of oxygen? what is the mass of 5.0 moles of iron? find the number of moles of argon in 452 g of argon. find the grams in 16.5 mol of hydrogen.

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Chemistry, 09.08.2019 04:10, 67bryant

(i)how many atoms are present in 7g of lithium? (ii)how many atoms are present in 24g of carbon? calculate the number of moles in each of these substances 19g of fluorine, f2 22g of carbon dioxide, co2 17g of hydroxide, oh- ions

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Chemistry, 18.08.2019 16:30, cheesedoodle

4. how many moles are in 54.0 grams of silver? 54.0 g ag x (108mol ag /1 g ag ) = 5,832 ag moles ag (use the gray boxes to insert the values for the conversion factors.) 5. what is the mass of 6.3 moles of sulfur? 6.3 mol s x ( / ) = g s 6. how many atoms are in 6.0 moles of argon? 6.0 mol ar x ( / ) = atoms of ar 7. how many moles of kr are in 112 g of krypton? 112 g kr x ( / ) = moles of kr 8. how many moles are in 1.93 x1024 formula units of kf, potassium fluoride? 1.93 x1024 formula units x ( / ) = mol kf (the next two problems need 2 step conversions - so there are two conversion factors (fractions) for the problem - remember the mole map - covert to moles first, then to the desired unit.) 9. how many atoms are in 86.2 g of si (silicon)? 86.2 g si x ( / ) x ( / ) = atoms of silicon 10. what is the mass in grams of 4.8 x 1024 atoms of magnesium? 4.8 x 1024 atoms of mg x ( / ) x ( / ) = g mg

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Mathematics, 29.09.2019 14:50, allenpaietonp9v8sv

One mole of a chemical element contains approximately 6.02 × 1023 atoms. how many atoms are present in 4.6 × 104 moles of oxygen? represent the answer in scientific notation. round so the first factor goes to the hundredths place. a. 2.77 × 10^27 atoms b. 2.77 × 10^28 atoms c. 27.7 × 10^27 atoms d. 27.7 × 10^28 atoms

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