Answer:
b) The NaCl solution described
Explanation:
First we calculate the number of moles for each compound:
moles = mass / molecular weight
moles of NaCl = 50 / 58.5 = 0.854 moles
moles of Na₂SO₄ = 59 / 142 = 0.415 moles
In the first solution we have:
0.854 moles of NaCl which means that 0.854 moles of sodium Na⁺ ions are dissolved in 500 mL of solution
In the second solution we have:
0.415 moles of Na₂SO₄ which means that 0.843 moles of sodium Na⁺ ions are dissolved in 500 mL of solution
Now we may conclude that the NaCl is more concentrated than the Na₂SO₄ solution.
3.3 mm*mm*mm × 1m*1m*1m / 1000mm*1000mm*1000mm = 3.3 ×10^-9 m^3
A physical change occurs when a material changes state, these can include color, luster, melting/boiling point, hardness etc. Since the boiling point of water is changing state therefore it is a physical change
The temperature of a glass does not change state, it is just heated due to the boiling water
The answer is about 376.48 grams, but rounded to three significant figures, it’s 376 grams
Answer:
I didn't do anything, we don't celebrate lol I hope you had fun though!
Explanation:
