Formula A: CH3Formula B: C2H6
Given the two formulas representing the same compound:
Which statement describes these formulas?
(1) Formulas A and B are both empirical.
(2) Formulas A nd B are both molecular.
(3) Formula A is empirical and Formula B is molecular.
(4) Formula A is molecular and Formula B is empirical.
Answers
Correct option is (3).
Empirical formula:-Simplest whole number ratio of various atoms present in a compound.
Molecular formula:-The formula that gives the total number of atoms of each element in each molecule of a substance.
So, (formula B) is the molecular formula, and
(Formula A)is the empirical formula.
Hence, the correct option is (3).
To know more about:-
CnH2n
CnH2n-2
And CnN2n+2
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Answers
0 = C +273
-273 = C
some people use 273 or 273.15 just depends on the teacher.
Final answer:
0 Kelvin, also known as absolute zero, is equivalent to -273.15 degrees on the Celsius scale. Both scales are linearly related with the Kelvin scale starting at the lowest possible theoretical temperature.
Explanation:
The equivalent of 0 Kelvin on the Celsius scale is -273.15 °C. The Kelvin scale is an absolute temperature scale used commonly in science. This scale is based on absolute zero, which is theoretically the lowest possible temperature and is assigned the value of 0 Kelvin. This is the point at which there is no molecular motion and, therefore, no thermal energy. The Kelvin and Celsius scales are linearly related; one-degree change in temperature is the same on both scales. On the Celsius scale, which is defined with the freezing point of water at 0 degrees and the boiling point at 100 degrees, absolute zero or 0 Kelvin falls at -273.15 degrees Celsius.
Learn more about Kelvin and Celsius scales here:
#SPJ3
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Answer: Protons
The atom in a sample of an element must contain nuclei with the same number of protons. If the protons change in number, then the element will modify as well.
Thank you!
(3) the change in solubility of the reacting substances
(4) the energy released or absorbed during the reaction
Answers
Answer: (4) the energy released or absorbed during the reaction
Explanation: Potential energy diagram is the representation of energy with the course of reaction. It shows the energy of reactants, activation energy which is the energy required by the reactants to cross the energy barrier and the energy of the products.
Thus the difference of energy of products and energy of reactants gives us the energy released or absorbed during the reaction.
where = enthalpy of reaction
= energy of products
= energy of reactants
If >
, energy is absorbed and reaction is endothermic
<
, energy is released and the reaction is exothermic.
True
False
Answers
Also that they decompose better. "not really"