Answer:
Heat lost by the pancake = Heat gained by butter
Explanation:
Because energy is always conserved, this process involves the loss of energy by one substance which is gained by another.
The pancakes were freshly made, so they are hot; having the required energy to melt the butter placed on them. The butter absorbs heat from the pancakes which is equal to or greater than its melting point. Thus, the butter melts due to the heat absorbed.
Therefore,
Heat lost by the pancakes = Heat gained by butter
molar mass of the molecule is 60. Moles=mass/molar mass
92.02g/60=1.53366667mol
1.53mol(3sf)
Volume of Aluminium cylinder = mass ÷ density
= 13.1 g ÷ 2.70 g / cm³
= 4.85 cm³
If Volume of Cylinder = πr²l
then 4.85 cm³ = πr²(2.60cm)
thus r² =
∴ r ≈ √(0.594 cm)
≈ 0.771 cm
Density = mass /volume
Density = 66g/10cm³
Density = 6.6g/cm³....
Just take note of the formula....
Hope this helped....
Answer:
C
Explanation:
I dont know why I just put that hdhdhdhd