Answer:
A
Explanation:
It's A since a theory is a widely accepted explanation of something in the natural world which can be tested but not 100% proven.
One decimal place.
The reading in graduated cylinder is marked after every 1 mL and that of pipette at every 0.1 mL. If same amount of water is taken from both the containers. The sum of volume of water will take the minimum decimal places. Precise value of volume is calculated using pipette as it has markup after every 0.1 mL, the lowest decimal place will be 1 decimal place (0.1).
Answer:
Explanation:
Such type of compounds that have hydrogen, oxygen and one other element like Chlorine, Bromine etc and one hydrogen atom is directly connected with oxygen atom are called as oxyacid.
The acidic strength of such oxyacid which contains same element is determined by the number of oxygen atoms. Such as in the case of , is the weakest acid because it has only two oxygen while is the strongest acid because it has four oxygen atoms.
When the compound contains same number of oxygen and hydrogen atoms but one different element then the acidic strength depends on the electronegativity of the element. So in the case of , is the weakest acid because it contain iodine element that has less electronegativity while is strongest acid because chlorine atom has high electronegativity. So the overall order in weakest to strongest will be .
I think that the best and is c) try that one that one ones have some things that are wrong
Answer is: partial pressure of Xe is 22,95 atm.
m(He) = 10,5 g.
n(He) = m(He) ÷ M(He).
n(He) = 10,5 g ÷ 4 g/mol
n(He) = 2,625 mol.
m(Ne) = 10,5 g.
n(Ne) = m(Ne) ÷ M(Ne).
n(Ne) = 10,5 g ÷ 20,18 g/mol.
n(Ne) = 0,52 mol.
m(Xe) = 10,5 g.
n(Xe) = 10,5 g ÷ 131,3 g/mol.
n(Xe) = 0,08 mol.
Using <span>Dalton's law:
</span>p(Xe) = (0,08 mol / 0,08 mol + 0,52 mol + 2,625 mol) · 925 atm.
p(Xe) = 22,95 atm.