Answer:
Explanation:B ice melting is a phiyscal change and the mass of the substance remains the same
Answer: 
is a reactant; it is present before the reaction occurs.
Explanation:
In a chemical reaction the chemical formulas written before the arrow are described as reactants as they react together to form products which are written after the arrow.
Thus and HCl are reactants here whereas 
, 
and 
are products.
Yes, it has many natural acids. However, the biggest and most prominent acid is the organic acid, malic acid.
The melting point of the sample if it is not dried completely after filtering the recrystallized product will have a broad range and will occur at lower range than the actual value.
What is melting point?
Melting point is the temperature at which the solid form of a given substance changes to the liquid form at atmospheric pressure. It is important because, by using the physical property of a substance the substance can be identified.
The sharp range melting point of the substance indicates the purity of the substance. If the sample is not dried completely after recrystallisation, the melting point will have a broad range.
Therefore, if the sample given is not dried completely, it will be impure and the decreases the melting point of the substance. So the actual melting point of the substance cannot be determined.
To learn more about the melting point click on the given link brainly.com/question/40140
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PV = nRT
I only know the valeu of R is you're using atm, so convert kPa to atm.
1 atm = 101.325 kPa
2.52 atm = 255 kPa
2.52atm(x) = 7(.0821)(342)
2.52atm(x) = 196.5
x = 78
78 liters
