Answer:
See explanation
Explanation:
The thermal energy of a substance is affected both by its mass and by its temperature. Thermal energy is defined as the total kinetic energy of all particles in an object.
Even though the cup of water has a higher temperature, the bathtub has more thermal energy because it contains much more mass of water compared to the cup. It will release more thermal energy to the surroundings compared to the cup of boiling water.
You multiply the molarity by the volume in litres.
Explanation:
Molarity is the number of moles of a substance in one litre of solution. The official symbol for molarity is “c” (concentration), but many people use the old symbol “M”.
M
=
n
V
, where
n
is the number of moles and
V
is the volume in litres.
We can rearrange this equation to get the number of moles:
n
=
M
×
V
Example
:
How many moles of
NaCl
are contained in 0.300 L of 0.400 mol/L
NaCl
solution?
Solution:
n
=
0.300
L soln
×
0.400 mol NaCl
1
L soln
=
0.120 mol NaCl
Answer:
The correct answer will be "18.25 g".
Explanation:
The given values are:
Specific heat,
C = 0.45 J/g･°C
Heat involved,
q = 801 J
Temperature,
ΔT = 120.0°C-22.5°C
= 97.5°C
As we know,
⇒ 
On substituting the given values, we get
⇒ 
⇒ 
Answer: Molar mass of CO2 is 44 gram/mol. So,the mass of 1 mole or 6.02*10^23 molecules of CO2 is 44 grams
Explanation:
