When water boils, it is a physical change. Just like when it freezes. You can change it back to its original state. That is the difference between a physical and chemical change.
<em> I hope this helps!
</em><em>~kaikers</em>
The answer is true I hope it's rite
Oryza Sativa is the scientific name for rice
The process of metal refining is done for the purpose of fixing the metals impurities through the reduction process. On the other hand, problems are encountered in doing this process. Metal refining produces refined metals but the main downside of this process is the production of too much waste after.
Answer:
0.949367 ≈ 0.95.
Explanation:
The chi square analysis can be done by the formula as follows:
Chi square = (O-E)²/E
Here, O is observed value and E is expected value.
The tall trait follows the Mendel's law, this means the cross between F1 results in the formation of progeny with ratio 3( tall) : 1 (short).
The observed values for set I is 63 tall, 16 short.
The expected value for tall plant =
= 59.25 .
The expected value for short plant =
= 19.75.
Put these value in the formula for chi square analysis:
For tall plants = ( 63 - 59.25)²/ 59.25= 0.237.
For short plants = (16 - 19.75)²/ 19.75 = 0.712
Total value for set I = 0.237 + 0.712 = 0.95.
Thus, the answer is 0.95.