A block of metal has a volume of 14.0 in' and weighs 5.28 lb. Part A
What is its density in grams per cubic centimeter?
Express the density in grams per cubic centimeter to three significant figures.

Explanation:

1inch = 2.54cm

1inch^3= 2.54³ = 16.38cm^3

13.4cm^3 = 13.4*16.38 = 219.5867 cm^3

1lb = 454g

5.14lb = 5.14*454g/lb = 2,333.6g

density g/cm^3 = 2,333.6/219.6cm^3

density = 10.6265938 g/cm^3

to three significant figures:

density = 10.6g/cm^3

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.