Answer:
See Explanation
Explanation:
When the balloon is placed above the beaker as described and heating commences, the balloon inflates more. This increased inflation is due to the expansion of the gas in the balloon.
The gas expands because the molecules of gas inside the balloon receive a greater kinetic energy when the temperature was increased hence they move faster and spread out. Recall that temperature is defined as a measure of the average kinetic energy of the molecules in a body.
As the gas in the balloon is heated up, its density decreases. The more the beaker is heated the more the balloon becomes inflated.
When the balloon is removed from the beaker and placed in an ice bath, the balloon shrinks as temperature decreases. This is in conformity with Charles's law.
Answer:
yes
Explanation:
a solid melting into a liquid is a kind of a physical change and it definitely alters the appearance of the substance. A liquid evaporating into gas is also an example of a physical change.
3. 4 g of a nonelectrolyte dissolved in 78. 3 g of water produces a solution. The molar mass of the solute will be 17.94.
<h3>
What is molar mass?</h3>
Molar mass of a substance is its mass in grams in per mole of a solution.
Freezing point: Freezing point of a substance is a temperature at which a liquid starts to solidify.
Depression in the freezing point can be calculated
[Depression in freezing point of pure solvent—Freezing point of solution] =[(0) - (-4.5)] °C =4.5 °C
molar mass = Number of moles of solute m / Mass of solvent in Kg
3.4g / M x 1/ 0.0783 kg = 43.42
Substitute AT by 4.5°C , Kr by 1.86 °C/m, and m by 43.42 m in equation (1) as follows:
1.86 x 43.42 / 4.5 = 17.94
Therefore, molar mass of solute to be 17.94.
To learn more about molar mass, refer to the link:
brainly.com/question/22997914
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Answer:
No because it's located inside the nucleus of the atom
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Explanation: