For a star to explode as a Type II supernova, it must be at several times more massive than the sun<span> (estimates run from eight to 15 solar masses). Like </span>the sun<span>, it will eventually run out of hydrogen and then helium fuel at its core. However, it will have enough mass and pressure to fuse carbon.
i had to right an essay on this stuff.</span>
Answer: The student’s percent error is 3.16%.
Explanation:
Calculated mass of the block = 16.3 g
Actual mass of the block = 15.8 g
The student’s percent error is 3.16%.
The result would be: loss of farmland
As you go down deeper, less water is able to receive the heat from the sun or other sources, so naturally they would be cooler than the water at the top
ZnO + 2HNO₃→ Zn(NO₃)₂ + H₂O
mol Zn(NO₃)₂ = mol ZnO = 0.2 (from the coefficient)
mass Zn(NO₃)₂ = 0.2 x 189 = 37.8 g (theorethical yield)
% yield = 15.3 : 37.8 x 100% = 40.48%
