Answer:
when you boil water, you convert it into water vapor, which leaves the pot and mixes with the atmosphere. If you boil the pot long enough, eventually all the water in it is converted to vapor and leaves. the pot is then empty.
Explanation:
Answer:
Ii is the circuit overload
Explanation:
Answer:
25.04 g is the mass of pentane
Explanation:
Pentane density = Pentane mass / Pentane volume
1 cm³ = 1mL
0.626 g/mL = Pentane mass / Pentane volume
0.626 g/mL = Pentane mass / 40 mL
0.626 g/mL . 40 mL = Pentane mass → 25.04 g
Questions:
What instrument is used to measure the mass of different isotopes of an element?
Answer:
Mass spectrometer
Answer:
Diluted concentration is 0.5M
Explanation:
Let's solve this with rules of three, although there is a formula to see it easier
In 1000 mL (1L), we have 2 moles of NaOH
In 250 mL we must have (250 . 2) / 1000 = 0.5 moles of NaOH
These moles will be also in 1 L of the final volume of the diluted solution
More easy:
1 L of solution has 0.5 moles of NaOH
Then, molarity is 0.5 M
The formula is: Concentrated M . Conc. volume = Diluted M . Diluted volume
2 M . 0.250L = 1L . Diluted M
0.5M = Diluted M
