WebHow many moles of Pb are in 4.71 X 10 to the 21 Pb atoms? 0.00782 In comparing a balloon containing 25 grams of helium to a balloon containing 25 grams of neon, which … Web9 mrt. 2012 · How many moles are in 3.4 1024 Pb atoms? 3.4 X 10^24 Pb atoms (1 mole Pb/6.022 X 10^23) = 5.6 moles of lead. People also asked. What is the mass in grams of 0.0050 mol of uranium?

Solved Answer: C 20) How many moles of Pb are in 4.71 x 1021

WebAnswers. One mole of CH 4 reacts with 2 mol of O 2 to make 1 mol of CO 2 and 2 mol of H 2 O. 6.022 × 10 23 molecules of CH 4, 1.2044 × 10 24 molecules of O 2, 6.022 × 10 23 molecules of CO 2, and 1.2044 × 10 24 molecules of H 2 O. 2 mol of C 2 H 6 ⇔ 7 mol of O 2 ⇔ 4 mol of CO 2 ⇔ 6 mol of H 2 O. C 5 H 12 + 8O 2 → 5CO 2 + 6H 2 O; 4.4 ... WebOur community brings together students, educators, and subject enthusiasts in an online study community. With around-the-clock expert help and a community of over 250,000 knowledgeable members, you can find the help you need, whenever you need it. softwilly beats

ChemTeam: Using Avogadro

Web20) How many moles of Pb are in 4.71 × 1021Pb atoms? A) 0.00782 B) 2.84 × 1045 C) 207.2 D) 6.022 × 1023 E) none of the above A ) 0.00782 As per the relation,number of moles = 6.022×10 23 21) What is the mass of 1.56 × 1021atoms of magnesium in grams? A) 4.72 × 10-5 B) 0.0630C) 0.142 D) 1.07 × 10-4 E) none of the above Answer: B C ) … Web24 mrt. 2024 · How many moles of Pb are in 4.71 × 1021 Pb atoms? Expert's answer Solution: 1 mole = 6.022 ∙ 10^23 atoms, so: Amount of Pb: (4.71 ∙ 10^21) / (6.022 ∙ … WebProblem #4: Suppose we knew that there were 8.170 x 10 20 atoms of O in an unknown sample of KMnO 4.How many milligrams would the unknown sample weigh? Solution: 1) Determine how many formula units of KMnO 4 there are: 8.170 x 10 20 atoms divided by 4 atoms per formula unit . 2.0425 x 10 20 formula units of KMnO 4. 2) Determine moles of … slow roll it love doctor lyrics