The 0.05 moles of
required to make 1 L of solution in which the
concentration is 0. 15 M.
Calculation,
The Sodium phosphate dissolves as follows:
→ ![3Na^{+} (aq)+PO_{4}^{-} (aq)](https://tex.z-dn.net/?f=3Na%5E%7B%2B%7D%20%28aq%29%2BPO_%7B4%7D%5E%7B-%7D%20%28aq%29)
To make 1. L of solution in which the
concentration is 0. 15 M
The morality of
= 0.15 M = number of moles / volume in lit
The morality of
= 0.15 M = number of moles /1 Lit
number of moles of
= 0.15 mole
The mole ratio is 1: 3
It means, the 1 mole of
required to form 3 mole of
So, to form 0.15 mole of
= 1×0.15 / 3 moles of
required.
Hence, number of moles of
required = 0.05 moles.
learn about moles
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17000mg I think I hope this help
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Answer:
The answer to your question is: Cp = 0.129 J/g°C
Explanation:
Data
mass = 955 g of tungsten
T1 = 18°C
T2 = 100°C
Q = 10180 Joules
Cp = ?
Formula
Q = mCpΔT
Clear Cp from the equation
Cp = Q / mΔT
Substitution
Cp = 10180 / (955(100-18))
Cp = 10180 / (955(82))
Cp = 10180 / 78310
Cp = 0.129 J/g°C
I’m going to go with The pH 1 solution is two times more acidic than that with a pH of 1. If that’s not the answer, then my second best guess would be The pH solution is ten times more acidic than that with a pH of 2.
The first and third answer choice wouldn’t even be an answer so you can just cancel those two out and pick between answer choice 2 or 4.
Hope this helps, and have an amazing day!! :))