I believe the answer is excess reactant?
Answer: Option (D) is the correct answer.
Explanation:
Need means necessity without which a person might not be able to survive for long.
For example, food is a need for every living being as without it any individual cannot survive for a long period of time.
Similraly, shelter is also a need and insurance is also necessary as it protects an individuals life or his savings so that after his death the future of his family remains protected.
Whereas cable TV is not a need as an individual can survive without it. Therefore, a cable TV is a want.
Answer:
Hi, There!
which of these structures is found in all types of plant and animal cells
- <u><em>Cell membrane is found in both animal and plant cells.
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- <u><em>Nucleus is found in both animal and plant cells.
</em></u>
- <u><em>Cytoplasm is found in both animal and plant cells.
</em></u>
- <u><em>Mitochondria is found in both animal and plant cells.
</em></u>
- <u><em>Endoplasmic reticulum is found in both animal and plant cells.
</em></u>
- <u><em>Golgi apparatus is found in both animal and plant cells.
</em></u>
- <u><em>Lysosomes is found in both animal and plant cells.</em></u>
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Answer:
appx. 1.07 moles
Explanation:
175g of molecule Ca(NO3)2
To find the # of moles, use stoichoimetry.
1. We need the molar mass of Ca(NO3)2.
Ca mass: 40.08 g
NO3 mass: N + 3(O) --> 14.01 + 3(16.00) --> 62.01
Molar mass = Ca + 2(NO3) --> 40.08 + 2(62.01) --> 164.1 g
2. write out the calculation
175g Ca(NO3)2 * (1 mole Ca(NO3)2)/(molar mass of Ca(NO3)2)
175 g Ca(NO3)2 * (1 mole Ca(NO3)2)/(164.1 g Ca(NO3)2)
The g units cancel out and we're left with moles.
Simply perform the calculation now: 175*1/164.1 ≅1.07 moles
