Answer:
If you dissolve 58.44g of NaCl in a final volume of 1 liter, you have made a 1M NaCl solution, a 1 molar solution.
Explanation:
Carbonated drinks have the air under pressure so that carbon bubbles are forced into the drink, keeping it carbonated. So when you open a can, the air under pressure in the can comes out of the can at a high speed, making a "whooshing" sound. The gas law that applies to this concept is the Boyle's Law (PV=k or P1V1=P2V2).
Answer:
D) A giraffe's long tail
Explanation:
I'm guessing this is the right choice because:
a. Migration is a survival instinct and doesn't particularly help with energy.
b. A polar bear's thick fur is to protect it from the cold and helps to warm the animal, but it doesn't supply energy.
c. A monkey's long tail is indeed useful for hanging from branch and climbing, yet they have four other limbs that aid in the same process and again, it doesn't neccessarily supply energy.
d. A giraffe's long neck is used to eat from trees since giraffes are herbivores and eat from tall trees, which counts as energy. This is because when the eaten it is later converted into protein to be used energy.
I hope this helps!
During the melting of ice in the mouth, the mouth loses heat and feels colder.
<h3>What is the heat change that occurs in melting?</h3>
Melting is the process by which when a solid absorbs heat from the surroundings, it changes to liquid.
Therefore, the melting of a solid is an endothermic process.
In the system of ice melting in the mouth, the ice molecule absorbs heat energy from the mouth in order to melt.
Similarly, when the temperature of the water rose to 10.0 degrees, the water at 0.00 degrees absorbs heat from the mouth.
Therefore, the mouth loses heat and feels colder.
In conclusion, the melting of ice involves ice absorbing heat from the surroundings.
Lear more about melting of ice at: brainly.com/question/23557049
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Answer:
334.4J
Explanation:
Q = mass×specific heat capacity (final temperature - initial temperature) = 100 × 4.18 (23.40 - 22.60) = 100 × 4.18× 0.80 = 334.4J