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? ? Amy Leigh! ? ?
Guest
i need help solving some of these questions...
Coz i absolutely have no idea (i haven't done converting since grade 5!!) oh and if you can, can you please explain how you got the answers so i know what to do next time
1. the density of the lightest metal, Lithium (Li), is 5.34 x 10(2) kg/m(3). Convert the density to g/cm(3). --( this (2) and (3) means squared and cubed...)--
2. The price of gold on a certain day in 1991 was $327 per ounce. How much did 1.00g of gold cost that day? (1 ounce = 28.4g)
3. The speed of sound in air at room temperature is about 343 m/s. Calculate this speed in kilometres per hour.
4. Vanillin (used to flavour vanilla ice cream and other foods) is the substance whose aroma the human nose detects in the smallest amount. The threshold limit is 2.0 x 10(-11)g per litre of air. If the current pprice of 50g of vanillin is $112, determine the cost to supply enough vanillin so that the aroma could be detectable in a large garage of volume 160m(3).
i don't care if you don't do all of them, i just need some help. D:
Coz i absolutely have no idea (i haven't done converting since grade 5!!) oh and if you can, can you please explain how you got the answers so i know what to do next time
1. the density of the lightest metal, Lithium (Li), is 5.34 x 10(2) kg/m(3). Convert the density to g/cm(3). --( this (2) and (3) means squared and cubed...)--
2. The price of gold on a certain day in 1991 was $327 per ounce. How much did 1.00g of gold cost that day? (1 ounce = 28.4g)
3. The speed of sound in air at room temperature is about 343 m/s. Calculate this speed in kilometres per hour.
4. Vanillin (used to flavour vanilla ice cream and other foods) is the substance whose aroma the human nose detects in the smallest amount. The threshold limit is 2.0 x 10(-11)g per litre of air. If the current pprice of 50g of vanillin is $112, determine the cost to supply enough vanillin so that the aroma could be detectable in a large garage of volume 160m(3).
i don't care if you don't do all of them, i just need some help. D: