[ Q ] = [ Delta U ] + [ W sub B ]
No work is done. -----> [ W sub B ] = 0.0
[ Delta U ] = [ m ] [ C sub V ] [ T2 - T1 ]
[ Delta U ] = [ 50 ] [ 0.58 ][70 - 20 ]
[ Delta U ] = 58 cal
Q = [ Delta U ] = 58cal
assuming the question is 2. you add a prefix to the base unit, it shows it right there. Depending on how much larger or smaller the prefix changes from mega-micro.
Answer:
A hydraulic turbine converts the energy of flowing water into mechanical energy. A hydroelectric generator converts this mechanical energy into electricity
Explanation:
Answer:
C8H12F6
Explanation:
To solve this question we need to find the moles of each atom in order to find the empirical formula (The empirical formula is defined as the simplest whole-number ratio of atoms present in a molecule). Using the empirical formula and the molar mass we can find molecular formula as follows:
<em>Moles C:</em>
2.35g * (1mol / 12g) = 0.1958 moles C
<em>Moles H:</em>
0.294g (1mol /1g) = 0.294 moles H
<em>Moles F -Molar mass: 19.0g/mol-: </em>
Mass F: 5.43g - 2.35g C - 0.294g H = 2.786g F * (1mol / 19.0g) = 0.1466 moles F
The moles of atoms dividing in the moles of F (Lower number of moles) produce the simplest ratio as follows:
C = 0.1958mol C / 0.1466mol F = 1.33
H =0.294mol H / 0.1466mol F = 2
F = 0.1466 mol F / 0.1466mol F = 1
As the empirical formula requires whole numbers, this ratio multiplied 3 times:
C = 4
H = 6
F=3
The empirical formula is:
C4H6F3
With molar mass of:
4C = 12*4 = 48
6H = 1*6 = 6
3F = 19*3 = 57
The molar mass is: 48g/mol + 6g/mol + 57g/mol = 111g/mol
As we know the molecule has a molar mass between 219-225g/mol and the empirical formula is 111g/mol, 2 times empirical formula will produce a molecule with the molar mass of the molecule, that is:
<h3>C8H12F6</h3>
B
atoms in a solid can move very little because of how compact they are
in a liquid atoms move a little more freely
in a gas atoms are bouncing fast as they are very spaced out
