The conversion factor for volume at STP is
or
. Since we want volume, we would use
. We conclude with the following calculations:
The answer is 82.88L N2
Answer:
0.069moles
45.65%
Explanation:
Firstly, we need to calculate the number of moles of CO2 produced. We can use the ideal gas equation for this.
PV = nRT
n = PV/RT
according to the question,
P = 746torr
V = 1.73L
T = 26 = 26 + 273.15 = 299.15K
n = ?
R = 62.364 L. Torr/k.mol
n = (746 * 1.73)/(62.364 * 299.15) = 0.069moles
B. To get this, we can use their molar masses. The molar mass of calcium carbonate is 100g/mol while for magnesium carbonate, molar mass is 84g/mol
The percentage by mass is (84)/(84 + 100) * 6.53g = 2.98g
= 2.98/6.53 * 100 = 45.65%
Answer: A compound is a substance made up of a definite proportion of two or more elements. A chemical formula tells us the number of atoms of each element in a compound. It contains the symbols of the atoms of the elements present in the compound as well as how many there are for each element in the form of subscripts.
Explanation: there is no explanation i copied it off of google
:)
Answer:
To get number of neutrons, you must have the mass number and atomic number of that atom.
atomic number is number of protons
