Answer:
It's ferric oxide Fe2O3
Explanation:
I don't say u must have to mark my ans as brainliest but if it has really helped u plz don't forget to thank me plz...
The electrical conductivity of a solution is the measure of the solution's ability to allow current to pass through it. This property is attributed to the amount of ions that are present in the solution. So, the answer to this item is IONS which are the positively or negatively charged particles.
1st part is ure answer --> 2M
Given mass -> 58 grams
mass of NaCl -> 58.44 approx -> 58 any
moles given-> 1 moles
If x is H+ then <span>x/0.15 = 0.03 and x = 0.0045 M </span><span>and
</span>
<span>Ka = x^2/(0.15 - x) = 0.0045^2/(0.15 - 0.0045) = 1.39 x 10^-4</span>
Answer:
10 L
Explanation:
We'll begin by calculating the number of mole in 9 g and 1 g of He. This can be obtained as follow:
Mass of He = 9 g
Molar mass of he= 4 g/mol
Mole of He =?
Mole = mass /Molar mass
Mole of He = 9/4
Mole of He = 2.25 moles
Mass of He = 1 g
Molar mass of he= 4 g/mol
Mole of He =?
Mole = mass /Molar mass
Mole of He = 1/4
Mole of He = 0.25 moles
Finally, we shall determine the new volume of the balloon as follow:
Initial mole (n₁) = 0.25 mole
Initial volume (V₁) = 1 L
Final mole (n₂) = 0.25 + 2.25 = 2.5 moles
Final volume (V₂) =?
V₁/n₁ = V₂/n₂
1 / 0.25 = V₂ / 2.5
4 = V₂ / 2.5
Cross multiply
V₂ = 4 × 2.5
V₂ = 10 L
Therefore, the new volume of the balloon is 10 L
