Answer:
the picture is too blury to see lol.
Explanation:
Electrons have a mass of 1/1836
Hope that helps you!
Answer:
Calcium is heavier a little bit
D. A broken piece of quartzite will break through, not around, quartz sand grains.
Quartzite and quartz sandstone have the <em>same chemical formula</em> (SiO_2)
Quartzite is a <em>metamorphic rock</em>. Heat and pressure have compressed the sand into a strong network of interlocking quartz grains.
Quartzite is so tough that it breaks through the sand grains rather than around them as in sandstone.
To come up with the mass of the atom is you add the protons with the neutrons
so you have
60+89=149
