Answer:
The correct answer is 4,556.2 J
Explanation:
The amount of heat is calculated with the following equation:
Heat= m x Cs x ΔT
Given:
m= 100.0 g (mass)
Cs= 4.18 J/g.ºC (specific heat)
ΔT= 10.9ºC (change in temperature)
We introduce the data in the equation and calculate the heat:
Heat = 100.0 g x 4.18 J/ºC.g x 10.9ºC = 4,556.2 J
Therefore, the amount of heat absorbed by the water (gained by the solution) is 4,556.2 J
The molar mass and the mass of the substance give the moles of the substance. The 10-gram sample of neon (Ne) has the fewest atoms. Thus, option b is correct.
<h3>What are moles?</h3>
Moles of the substance are the ratio of the molar mass and the mass of the substance. The moles of each atom with respect to the Avagadro's number (Nₐ) is given as,
Moles = mass ÷ molar mass
- Moles of carbon (C) = 10 ÷ 12
= 0.83 Nₐ atoms
- Moles of neon (Ne) = 10 ÷ 20
= 0.5 Nₐ atoms
- Moles of fluorine (F) = 10 ÷ 19
= 0.52 Nₐ atoms
- Moles of nitrogen (N) = 10 ÷ 14
= 0.7 Nₐ atoms
- Moles of oxygen (O) = 10 ÷ 16
= 0.63 Nₐ atoms
Therefore, option b. 10 gm neon has the fewest atoms.
Learn more about moles here:
brainly.com/question/11884840
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Explanation:
During a chemical reaction, the atoms of the original substances gain, lose or share their electrons with those of the substances with which they are reacting. The reaction creates new substances made up of a new combination of atoms and a different configuration of electrons.
There is an exchange of electrons in a conventional reaction. If the nuclei of atoms
are involved, I'm not quite sure, but those chemical reactions of nuclear particles
are studied in nuclear chemistry.
Answer:
sodium hydroxide + Hydrochloric acid -> Sodium chloride + Water
Explanation:
sodium hydroxide + hydrochloric acid = neutral solution
[Base]. [Acid]
This turns the phenophthalein Colourless
