Answer:
B. a chemical reactions that occurs in the chloroplast of a plant.
Explanation:
Answer:
Group 8A
Explanation:
This is because the elements in Group 8A is stable, what I mean is this elements have the maximum number of electrons in there last orbit so they dont need to form any compund with any other element in the periodic table.
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Answer:
Question 7 the answer is B
Explanation:
In every nuclear reaction there is always formation of products either by nuclei bombardment or by the elements breaking into two elements of the same mass
Question 8
The answer is A
Nuclear reactions release a huge amount of energy than chemical reactions
Answer: 2.23 grams
Explanation:
Nitrogen dioxide is an oxide of nitrogen with a chemical formula of NO.
Given that:
mass in grams of NO = ?
Number of moles of NO = 67mol
Molar mass of nitrogen dioxide NO, use the atomic mass of nitrogen = 14g; Oxygen = 16g
NO = (14g + 16g) = 30g/mol
Now, apply the formula:
Number of moles = (Mass in grams / Molar mass)
67 moles = (Mass / 30g/mol)
Mass = (67moles/30g/mol)
Mass = 2.23 grams
Thus, there are 2.23 grams of Nitrogen dioxide present
<span>Animal cell organelles like lysozyme and the mitochondria have roles similar to the organs of the human digestive system.
The </span>lysozyme is like our stomach because digests the food of the cell and has a acidic environment just like a stomach.
The mitochondria is like the intestine because it's responsible for converting the nutrients into energy that the body can use to function.
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