Answer:
The empirical formula for the compound is C3H4O3
Explanation:
The following data were obtained from the question:
Carbon (C) = 40.92%
Hydrogen (H) = 4.58%
Oxygen (O) = 54.50%
The empirical formula for the compound can be obtained as follow:
C = 40.92%
H = 4.58%
O = 54.50%
Divide by their molar mass
C = 40.92/12 = 3.41
H = 4.58/1 = 4.58
O = 54.50/16 = 3.41
Divide by the smallest i.e 3.41
C = 3.41/3.41 = 1
H = 4.58/3.41 = 1.3
O = 3.41/3.41 = 1
Multiply through by 3 to express in whole number
C = 1 x 3 = 3
H = 1.3 x 3 = 4
O = 1 x 3 = 3
The empirical formula for the compound is C3H4O3
There are three ways to measure the amount of something in chemistry.
1. There is a simple count which is tabulating the amount of something present.
2. You can measure the mass which is the amount of matter in something.
3. You can measure the volume which is the amount of three dimensional space occupied by a closed surface.
Answer:kffffffffffffffffp;j.,,j,j[[;'/n m
Explanation:
tggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg00000000000
Answer:
it could be 25degrees c... not sure
Answer:
The correct answer is 333.8 J
Explanation:
Ice (water in solid state) melts at 273 K (0ºC). During the phase change from solid to liquid, water absorbs 6.01 KJ per mol until it melts completely. To calculate the heat absorbed, we first have to convert the mass of water (1 g) to mol by using the molecular weight of water (H₂O):
Molecular weight of water= 2 x molar mass H + 1 x molar mass O
Molecular weight of water= 2 x 1 g/mol + 16 g/mol= 18 g/mol
mol ice= 
= 0.055 mol
heat= 0.055 mol x 6.01 KJ/mol= 0.3338 KJ
Finally, we convert KJ to J (1 KJ= 1000 J so we multiply by 1000):
0.3338 KJ x 1000 J/1 KJ= 333.8 J
