Answer:
Molar volume at STP can be used to convert from moles to gas volume and from gas volume to moles. The equality of 1 mole = 22.4 L is the basis for the conversion factor.
Explanation:
Answer:
If a saturated hot solution is allowed to cool, the solute is no longer soluble in the solvent and forms crystals of pure compound. Impurities are excluded from the growing crystals and the pure solid crystals can be separated from the dissolved impurities by filtration.
To solve this we assume that the gas inside the
balloon is an ideal gas. Then, we can use the ideal gas equation which is
expressed as PV = nRT. At a constant pressure and number of moles of the gas
the ratio T/V is equal to some constant. At another set of condition of
temperature, the constant is still the same. Calculations are as follows:
T1 / V1 = T2 / V2
V2 = T2 x V1 / T1
V2 = 231 x 556 / 278
V2 = 462 cm³
Answer:
1.2 picoseconds
Explanation:
I looked it up, but I think that in order to find Picoseconds, you have to multiply your number times 100000000000 or move your decimal point 11 times. Hope this helped! Please give me brainly as well! Thanks!
Answer:
The combustion will release -3,321 KJ/mol of energy
Explanation:
What we need to do here is to first calculate the number of moles of methane burnt.
Mathematically, the number of moles of methane burnt = mass of methane/molar mass of methane
Molar mass of methane = 16g /mol
Thus the
number of moles will be ;
59.7/16 = 3.73 moles
Now, 1 mole of methane produces -890 KJ/mol if energy
Then the energy produced by by 3.73 moles of methane would be 3.73 * 890 = -3,320.8125
which is approximately -3,321 KJ/mol
Kindly note that the amount of heat is negative because it is an exothermic reaction