IDNStudy.com, ang iyong mapagkukunan ng mabilis at eksaktong mga sagot. Makakuha ng impormasyon mula sa aming mga eksperto, na nagbibigay ng detalyadong sagot sa lahat ng iyong mga tanong.

1. The density of gold is 19.3 g/cm3 . What is the mass of a bar of gold in kilograms that measure 6 inches x 4 inches x 2 inches ?2. A bar of aluminum occupies a volume of 15 ml and weights 40.5 g . What is the density?3. Mercury metal is poured into a graduated cylinder that holds exactly 22.5 ml . The mercury used to fill the cylinder weights 306 g . From this information , calculate the density of mercury .4. What is the weight of the ethyl alcohol that exactly fills a 200 ml container ? The density of ethyl alcohol is 0.789 g/ ml .5. A rectangular block of copper metal weights 1896 g the dimensions of the block 8.4 by 5.5 by 4.6 inches. From this data, what is the density of copper?

Sagot :

you can answer this by using the formula of density
where in density is = mass/volume in ur question number two the unknown is density so u may use this formula
in #3 u can use this one too and in #4 u can use mass=density • volume
1. D = M/V ; (19.3 g/cm3) = M/((6 in × 2.54 cm)(3 in × 2.54 cm)(2 in × 2.54 cm)); M = 11385.73 g; 2. 40.5 g / (0.015 L × 1000 cm3) = D ; D = 2.7; 3. 306 g / (22.5 cm3) = D ; 13.6 = D; 4. 0.789 g/mL (200 mL) = M ; M = 157.8 g; 5. 1896 g / (8.4 × 2.54)(5.5 × 2.54)(4.6 × 2.54) = D; D = 0.544 g/cm3