Answer:
Explanation:
4FeS₂ + 11O₂ → 2Fe₂O₃ + 8SO₂.
4 moles of FeS₂ reacts with 11 moles of O₂
8 moles of FeS₂ reacts with 22 moles of O₂
Moles of O₂ available is 15 .
So O₂ is in short supply .
So O₂ is the limiting reagent.
Option (c) is the right choice.
Answer:
Since different isotopes of an element have different numbers of neutrons (but always the same number of protons) they have different mass numbers. Nitrogen-14 and nitrogen-15 are both stable isotopes of nitrogen. However, the other 5 isotopes are all unstable.
The heart has 2 chambers: The UPPER CHAMBERS are called the <u>atrium</u> and the LOWER CHAMBERS are called the <u>ventricles</u>
Therefore , answer is c
The correct answer is B: dormancy. In response to unfavourable environmental conditions, such as over winter months, plants are able to enter a state of little to no growth, called dormancy. In addition to reducing or halting growth over dormancy periods, <span>deciduous</span> trees shed their leaves over winter, thereby avoiding water loss. Most trees also bud over spring and summer periods, when conditions are more favourable.