Answer:
Explanation:
specific heat of granite s = .79 J / g / k
let the mass of granite = m
heat lost by granite = heat gained by water
heat lost = mass x specific heat x drop in temperature
= m x .79 x (80 - 20.45)
heat gained by water
= 3000 x 4.186 x (20.45- 20)
heat lost by granite = heat gained by water
m x .79 x 59.55 = 3000 x 4.186 x .45
m = 120.12 g .
Answer:
Mg + HCL --> MgCl2 + H2
mass 65.0 mass 257.26
RFM 24 RFM 95
moles 2.708 moles 2.708
Explanation:
mass of MgCl = 257.26 grams
Answer:
Conservation of Charge is the principle that the total electric charge in an isolated system never changes. The net quantity of electric charge, the amount of positive charge minus the amount of negative charge in the universe, is always conserved.
Answer:
it is a physical change because when you heat up again a solution of sugar and tea you gonna obtain again sugar
