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Problem 114 Hard Difficulty

Calculate the mass in grams of each of the following samples.
a. $2.6 \times 10^{-2}$ moles of copper(II) sulfate, CuSO $_{4}$
b. $3.05 \times 10^{3}$ moles of tetrafluoroethylene, $\mathrm{C}_{2} \mathrm{F}_{4}$
c. 7.83 $\mathrm{mmol}(1 \mathrm{mmol}=0.001 \mathrm{mol})$ of $1,4$ -pentadiene, $\mathrm{C}_{5} \mathrm{H}_{8}$
d. 6.30 moles of bismuth trichloride, $\mathrm{BiCl}_{3}$
e. 12.2 moles of sucrose, $\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}$

Answer

A.4.2 $\mathrm{g}$
B.$3.05 \times 10^{5} \mathrm{g}$
C.0.533 $\mathrm{g}$
D.$1.99 \times 10^{3} \mathrm{g}$
E.$4.18 \times 10^{3} \mathrm{g}$

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Top Chemistry 101 Educators
Stephen P.

Drexel University

Allea C.

University of Maryland - University College

KS
Karli S.

Numerade Educator

Jake R.

University of Toronto

Video Transcript

It's so here we have four. I mean, five Coppens and we have the Moeller quantities of each of the compounds, and we're looking for how much this would away. So we know that mass is a prevalent to malls Well supplied by molar mass way have moles. We just need to then multiply. Visit those this whole by Miller Mats. All right, so first we have copper to sulfite and 2.6 times 10 to the exponents. Negative to most of it. That's what this notation means here. So to find the molar mass of copper two sulphate, we would need to at up the individual moulder mass of each Adam in this compact. So I've already gone ahead and dim done that on the molar mass of copper two sulphate is 161 0.6. This is not a person. 161.6 grams per mole. Right. So sorry about that. So if we don't supply this through, the part that we get is 4.2 grams. Okay, they have it. Next we have, um, touch rough, Loro F. Lee. So this is in a bit more complicated of Ah, compound, but still among the less so. Mom, the molar mass of touch trichloroethylene is three engine and five are not noted. 5 100 story, 100 gram Permal. So touch of Flora, Ethel, if anyone was wondering is a carbon is two carbons attached by a double bond with from two flooring groups sticking out of each carbon pick. Individual s le Right. So if you multiply this through, we get quite a large number. We get 305. Your engine. 500,000 pension. 5000 45 grams of tetra floor ethylene. Okay, Next up here? Yes, we have C five age eight. What? I actually should be calling these. Which, um, husband name of 14 come to dying. So here where we were introduced to Mill Imo's. Okay, so we must convert my limos in tomorrow's. So what? We would do that because we have toe multiply this number by a Moeller right now. Sorry, but, uh, conversion a unit conversion ratio. That is equivalent 21 Okay, So this unit conversion ratio, as I said, it is equivalent to one. So we don't change this quantity that we're converting right So we know that we must have eso as in into just Mila mole. We have the, um, prefix Millie, which means on the 1000th So then we can say that one more is equivalent to 1000 Milham ALS, you know, similar to like, no leaders. Two meters. Yeah. Mm. Miller moves. Okay, so we're not gonna maul supply? Um, the small, their quantity by the molar asked of c five each eight after 68 0.11 actually, grams per mole. Okay, in this equals 0.533 grams ever. 14.2 di e you Next up, we have B I seal three or bismuth truck. You haven't seen business. It is a mongoloid. So it would be along. That's their case in the sixth period, if you're interested. So, yeah, we have 6.3 moles of Ah, and it's Moeller muss is 315. 23 3 Oh, great. Throwing eyes in that cancelling. Okay, Good story. Both but 315.33 grams per mole of bismuth. Try claure. And that give this a mass of re large one of 1900 86 Gramps. Okay, now, lastly, we have sugar. Uh, also the proper name sucralose C 12 h 22 11. Not it's molar mass is 342 0.3 grams per mole. Uh huh. And this equals up true. Fourth of home. 176 grams of sugar. She is quite a lot.

McMaster University
Top Chemistry 101 Educators
Stephen P.

Drexel University

Allea C.

University of Maryland - University College

KS
Karli S.

Numerade Educator

Jake R.

University of Toronto