Answer:
CHCl₃
Explanation:
We have the following data:
C = 5.03 g
H = 0.42 g
Cl= 44.5 g
First, we divide each mass by the molar mass (MM) of the chemical element to calculate the moles:
MM(C) = 12 g/mol
moles of C = mass/MM(C) = 5.03 g/(12 g/mol) = 0.42 mol C
MM(H) = 1 g/mol
moles of H = mass/MM(H) = 0.42 g/(1 g/mol) = 0.42 mol H
MM(Cl) = 35.4 g/mol
moles of Cl = mass/MM(Cl) = 44.5 g/(35.4 g/mol) = 1.26 mol Cl
Now, we divide the moles by the smallest number of moles (0.42):
0.42 mol C/0.42 = 1 C
0.42 mol H/0.42 = 1 H
1.26 mol Cl/0.42 = 3 Cl
Thus, the C:H:Cl ratio is 1:1:3.
Therefore, the empirical formula is CHCl₃
Number 1 is Comets and asteroids
Number 2 is Comets are made of ice and rock
Number 3 is Meteor
Answer:
The new pressure is 8.58 atm
Explanation:
Using Boyle's law which states that the pressure of a gas is inversely proportional to the volume of the gas and mathematically written as;
P1 V1 = P2 V2
P1 = 3.7atm
V1 = 5.8L
V2 = 2.5L
P2 = ?
Equate the values to the equation and solve for P2:
P2 = P1 V1 / V2
P2 = 3.7 * 5.8 / 2.5
P2 = 21.46 / 2.5
P2 = 8.584 atm
The new pressure acting on the balloon is therefore 8.58atm
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