Okay so I have a chem test tomorrow and I still can't figure this density thing outIf someone could explain in detail how to do these questions, I would REALLY appreciate it!1You have a sample of lead with a mass of 4.54 gIt measures 4.2 cm long, 2.1 cm wide and 1.9 cm highDetermine its densityIs it really lead?2An aluminum cube has a density of 2.70 g/cm3It measures 1.5 cm on one sideWhat is the mass of the cube?
Be sure to allow the stiches to move smoothly across the needleIf you can't insert the other needle into a stitch, you have too much tension.
Im not sure about the first one but i can help you with the second one2An aluminum cube has a density of 2.70 g/cm3It measures 1.5 cm on one sideWhat is the mass of the cube? Mass is weight plus gravityFor example, say you have two boxes, one made of cardboard and the other made of goldThey are both the exact same shape and size, but one weighs moreThis is because the atoms in the gold are packed tighter, making heavier, and thus, a bigger mass So first, you have to find the volume of the cube1.5 cubed (1.5x1.5x1.5)3.375cmNow to find the mass you multiply that by the desity rate which is 2.7g2.7x3.375 9.1125g.
NoIf you knit tightly, it will be slightly shorterKeep practicing on knitting looserYou'll get it.
