I believe the correct answer from the choices listed above is the second option. The type of change and the explanation for the change in calcium carbonate would be that it is a <span>physical change </span>because even though a particle size change was observed, the calcium carbonate retained its original properties and was not transformed into a new substance.
Answer:
D) The energy and kinds of atoms of the reacting substances
Based on the information given in the question, the cholesterol has:
a mass of 0.406 g
&
moles of 0.00105 mol
Now, Molecular Mass = Mass ÷ Moles
= 0.406g ÷ 0.00105mol
= 386.6667 g/mol
≈ 386.67 g/mol
Answer:
Even small amounts of radiation over a prolonged period of time can be dangerous.
Explanation:
We all get exposed to radiation, such as through x-rays, and it's fine as one off experiences. However, if you're constantly dealing with radiation without any sort of protection, no matter how small the amount is, it could potentially lead to consequences like cancer. This is due to the fact that radiation can alter our genes
the reactants are generally two ionic compounds in aqueous solution.
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