1. Use the data table below and the attached graph paper to plot the mass and volume of the 5 samples of the minerals galena below. Note: the resulting line you plot is the minerals density!
The graph paper is on the last page.
2. Calculate the density of samples 1-5 and place the value in the "density" column of the data
table below.
3. Answer the questions below
Sample
Size
Mass
Volume
Density
1
small
15 g
2 cm3
8 cm3
60 g
AN
120 g
16 cm3
480 g
64 cm3
5
large
750 g
100 cm
Questions

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

: )

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.