Answer:
Option D would be correct: The mass of the products is equal to the mass of the reactants
Explanation:
For example, in chemical reactions, <u>the mass of the chemical components before the reaction is equal to the mass of the components after the reaction</u>.
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Answer:
Yes, the process of fossilisation is a continuous one. If the conditions are right, a dead plant or animal will be preserved in the rocks of the future, just as they were in the past.
Explanation:
For a fossil to form, several conditions have to be met. First of all, the animal had to live in the given area! Animals live in many environments on Earth, but not everywhere. The water above many lake bottoms and many areas of the deep ocean bottom are stagnant. The bottom water is never exchanged with surface waters, so the water contains no dissolved oxygen. Animals cannot live without oxygen, so no animals live there. In these situations, the only possibility of fossilization is if a fish or other swimming animal dies in oxygen-rich waters above, sinks down into the stagnant muddy bottom, and is buried by sediments.
Answer:
when the degree is less than 90
Answer:
The correct answer is 1.
Explanation:
The metabolism of homocysteine produces a sulfur amino acid that is normally formed from methionine during the fulfillment of its function as a donor of methyl groups. Metabolic fate such as remethylation and transsulfuration, involving the enzymatic forms of the vitamins folacin, B12, and B6, gives rise to homocysteine and mixed disulfides including so-called protein-linked homocysteine, the main form circulating in plasma. B6 deficiency would have a direct impact on the metabolism of homocysteine to cysteine.
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Answer : The mass of NaCl needed would be, 86.1 grams.
Explanation :
Formula used for Elevation in boiling point :
or,
where,
= change in temperature =
= boiling point constant =
m = molality
i = Van't Hoff factor = 2 (for NaCl electrolyte)
= mass of solute (NaCl) = ?
= mass of solvent (water) = 1001 g
= molar mass of solute (NaCl) = 58.5 g/mol
Now put all the given values in the above formula, we get:
Therefore, the mass of NaCl needed would be, 86.1 grams.