Answer:
INCREASE in the difference between the melting point measured and the true melting temperature.
Explanation:
Melting point of a compound is defined as the temperature at which the soils compound changes into liquid at the atmospheric pressure. There are different circumstances that can lead to inaccurate melting point. These include:
--> presence of impurities in the compound,
--> Molecular composition,
--> Force of attraction, and
--> Rapid heating of the compound.
Under the circumstances of rapid heating of the compound, there would be an increase in the melting point range when compared with the true melting point range of the compound.
The higher the heating rate, the more rapid the rise in oven temperature, increasing the difference between the melting point measured and the true melting temperature.
Answer: Oxygen 17 is an isotope of Oxygen 16.
Explanation: An isotope is an element with more or less neutrons, and the 16 and 17 represent the mass of the oxygen molecule. So oxygen 17 has one more neutron than oxygen 16.
Answer: 30.72 moles of 
will be produced from 5.12 moles of glucose.
Explanation:
The balanced chemical equation for combustion of glucose is:
According to stoichiometry :
1 moles of glucose produce = 6 moles of
Thus 5.12 moles of glucose produce =
of
Thus 30.72 moles of will be produced from 5.12 moles of glucose.
Answer:
where are the answer choices
Explanation:
Answer:- Ca = +2, S = +6 and O = -2
Solution:- There are certain rules for oxidation numbers. As per the rule, oxidation number of alkaline earth metals in their compounds is +2.
Oxidation number of oxygen in it's compounds is -2(except peroxides) and the sum of oxidation numbers of all the elements of a neutral compound is zero.
Since, Ca is +2 and O is -2, the oxidation number of S could easily be calculated for the given compound as:
Let's say the oxidation number of S in 
is 
. Let's make the algebraic equation and solve it.
Hence. the oxidation number of Ca is +2, O is -2 and S is +6.
