Antique Pocket Watches

Volume calculation?

1) A piece of quartz was cut into a rectangular solid measuring 5.00 cm by 25.0 cm of 5.00 mm. What volume in cubic millimeters? 2) A sheet of aluminum foil measures 30.5 cm by 75.0 cm and a mass of 9.94 g. What is the thickness of the sheet if the volume is 3.68 cm? 3) Calculate the volume in milliliters of each of the following liquids: (a) 0.500 g of ether (d = 0.714 g / mL) (b) 0.899 g of acetone (D = 0.792 g / mL) 4) Calculate the densityin grams per milliliter for each of the following: (a) 10.0 g of ether with a volume of 14.0 ml (b) g rectangular bronze measuring 3.55 cm x 2.50 cm x 1.75 cm solid 131.5 I need help to work these Chem. math problems to come and with the right answers ... someone can help me ... please? Thank you very much!

1) 62.5cm2 2) 0.00161cm Just ignore the weight, it is useless. 3a) 0.700mL 3b) 1.14mL 4a) 4b 0.714g/mL) 8.48g/mL This is not really chemistry, mathematics just easy. Volume = length * width * depth (# 2 just need the algebra) If you are given the density, then simply cross multiply, if they want to know the density you divide the weight by volume.

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