Answer: 385.4132857
Explanation:
Using the equation, PV=nRT, you can solve this problem.
P= 3.5 kPa V=? n= 0.55 moles of air T= 295K R= 8.314 (L kPa/mol K)
We use the constant rate of <u>8.314</u> because we are using kilopascals in this problem.
Using simple algebra we get-
V = (0.55 moles)(8.314 L kPa/mol k)(295 K) / 3.5 kPa
Using the calculator, we would get the answer of 385.4132857 L.
And whatever the significant figure is asked for, for example, 3 significant figures: the answer would be 385 liters.
Answer:
Rising sea levels would be devastating in North Somerset, with large parts of Clevedon, Weston-super-Mare and Burnham all being underwater by 2050 according to Climate Central
Explanation:
Oxygen can be obtained from water using electrolysis process as follows:
2 H2O .............> 2H2 + O2
It is given that:
molar mass of water = 10.01 grams and molar mass of O2 = 32 grams
From the balanced chemical equation, we can conclude that:
2 moles of water produce 1 mole of oxygen
2 x 18.01 = 36.02 grams of water produce 32 grams of oxygen.
To calculate how many grams of water must react to produce 50 grams of oxygen, we can use cross multiplication as follows:
mass of required water = 56.28125 grams
Answer:
1.14atm
Explanation:
Given parameters:
V1 = 250cm³ ;
1000cm³ = 1dm³; so this is 0.25dm³
P1 = 760torr
760torr = 1atm
V2 = 220cm³ ; 0.22dm³
Unknown:
New pressure = ?
Solution:
To solve this problem, we apply Boyle's law and we use the expression below:
P1 V1 = P2V2
The unknown is P2;
1 x 0.25 = P2 x 0.22
P2 = 1.14atm
It is c: a conductor that operates only at low temperatures
