Explanation:
higher or lower energy, depending on the element
Answer:
attachment, penetration, uncoating, replication, assembly, and release.
Explanation:
We are given with the conditions of the weather balloon and required to determine the volume of the balloon when the altitude is raised to 25,000 feet. We determine the number of moles through ideal gas law PV = nRT. Plugging to this equation, the number of moles is 1.1351 moles. We substitute this with another set of conditions, volume is 47.46 liters.
Answer:
The answer to your question is empirical formula = CH
molecular formula = C₆H₆
Explanation:
Data
Carbon 92.2%
Hydrogen 7.76%
Formula mass = 78.1 g
Process
1.- Express the percents as grams
Carbon 92.2 g
Hydrogen 7.76 g
2.- Convert the grams to moles
Carbon 12 g ---------------- 1 mol
92.2 g ------------- x
x = (92.2 x 1)/12
x = 7.68 moles
Hydrogen 1 g ------------------ 1 mol
7.76 g ------------- x
x = 7.76 moles
3.- Divide by the lowest number of moles
Carbon 7.68 / 7.68 = 1
Hydrogen 7.76 / 7.68 = 1.01
4.- Write the empirical formula
CH
5.- Calculate the molecular weight of the empirical formula
CH = 12 + 1 = 13
6.- Divide the molecular weight by the molecular weight of the empirical formula
78.1 / 13 = 6
7.- Write the molecular formula
6(CH) = C₆H₆
We find out the molar mass of NH₃.
atomic mass (N)=14 u
atomic mass (H)=1 u
atomic weight (NH₃)=14 u + 3(1u)=17 u
Therefore the molar mass of NH₃ will be: 17 g/mol
Then:
1 mol of water=18 g
2) We know that:
1 mol of any substance=6.022 * 10²³ particles.
3)We calculate the mass of 8.00 *10²² molecules
18 g of water----------------------------6.022*10²³ molecules
x---------------------------------------------8.00*10²² molecules
x=(18 g of water * 8.00*10²² molecules) / 6.022 * 10²³ molecules=2.39 g
Answer: the mass of 8.00 *10²² molecules of NH₃ would be 2.39 g.