chap 3 HW 2 Flashcards

1
Q

what were you meant to catch out in these questions

A

1) appropriate s.f therefore prob 3
2) .says temperature decreases so (original temperature(specified higher up 300 K) - 5)
.asks for answer in cm^3, working’s give m^3 (m=100 cm, m^2= 10000 cm^2, m^3= 1000000 cm^3) so i would do “(ANS of working)*10^6”

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2
Q

if empirical formula with mass AlCl3 = 133 Mr and same compound with Mr 267 what is it’s molecular formula

A

267/133 = 2
2(AlCl3) = Al2Cl6

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3
Q

what should you do if Q says “Explain how this increases/decreased would affect this”

A

use the corresponding formulas to work it out (and the units in those formulas that might be affected- edited)

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4
Q

convert 1 dm^3 into { liter (L), cm^3 (cubic centimeters), mL (milliliters) }

A

1 liter (L), 1000 cm^3 (cubic centimeters), 1000 mL (milliliters)

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5
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6
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7
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8
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