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A 600.00 mL bottle of mathanol is sold in a discount store as a gasoline additive to prevent freezing for $0.39. the density of mathaol is .79 g/cm^3 at room temp. What is the price of methanol per kilogram?

i really dont understand it and i just need to see how it is done step by step once to see how to do my other problems!! thank you!

2006-09-17 15:18:44 · 6 answers · asked by abbs 2 in Science & Mathematics Chemistry

6 answers

density = mass/volume
.79 = x/600
x=474g
474 g = 0.474 kg
the price is .39 per .474 kg so the price per 1 kg would be
.39/.474 = x/1
x= $0.82

2006-09-17 15:26:22 · answer #1 · answered by Anonymous · 0 0

Some useful things to know are that a mL is equivalent to a cm^3, so you can rewrite your density in g/mL. You should also know there are 1000g in a kg

You can use that to find out how many kilograms of methanol are in your 600 mL bottle like this...
600.00 mL * .79g/mL = 474 g of methanol. ( = 0.474 kg)

Then you divide the cost by the weight to get cost per weight (if your units in the division are kilograms, it gives you cost per kilogram)

$0.39/0.474kg = $0.83/kg voila!

2006-09-17 15:33:10 · answer #2 · answered by metatron 4 · 0 0

cm^3 is the same as mL. So........

1) Multiply 600 mL by the density to get the number of grams of methanol.
2) Then, convert the grams to kilograms by dividing by 1000 (since there are 1000 g in one kg).
3) Once you have found the number of kg, take the price and divide by the number of kg to get the price per kilogram.

2006-09-17 15:30:43 · answer #3 · answered by hogalicious 2 · 0 0

1,000 cubic cm in 1 litre

therefore 600 cubic cm in .6 i.e. 600 ml)

600 times .79 = 474 grams = .474 kilograms

0.39 divided by .474 = 0.82 cents per kilogram

2006-09-17 15:25:44 · answer #4 · answered by Grey Bear 2 · 0 0

hi, Alex I. The question asks for the respond to take delivery of in terms of mg/uL. to do this, convert the grams to mg, and the mL to uL, like this. 2.4g = 2400mg. 1mL = 1000uL. Your answer could have been reported as: 2400mg/uL. Your answer could have been reported as such. choosy, i think, yet Chemistry is all approximately being precise and good.

2016-12-12 10:17:16 · answer #5 · answered by ? 4 · 0 0

1 mL = 1 cm3
600 mL(.79 g/cm3)(1cm3/1mL) = 474 g or 0.474 kg
the price would be $0.39 for 0.474 kg of methanol

best answer

2006-09-17 15:25:20 · answer #6 · answered by teroy 4 · 0 2

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