Answer: The three main rock types are igneous, metamorphic and sedimentary.
The three processes that change one rock to another are crystallization, metamorphism, and erosion and sedimentation.
Any rock can transform into any other rock by passing through one or more of these processes. This creates the rock cycle.
Explanation:
Answer:
Nora used a minimal volume of hot solvent, this hot mixture was filtered to remove insoluble impurities. She had to perform a rapid filtration with a minimum of evaporation in a short-stemmed funnel previously heated in an oven, and provided with a pleated filter to increase the filtration rate, so in this way she prevented the product from crystallizing prematurely on the funnel stem.
If with this technique does not reach a pure substance, the process can be repeated by heating the solvent, changing the funnel or looking for a solvent with high dissolution power of the substance.
Explanation:
The solid products obtained in a reaction are usually accompanied by impurities that must be removed in order to dispose of the desired product in the highest possible purity. The most suitable method for removing impurities that contaminate a solid is by crystallization either in a pure solvent or in a mixture of solvents. This procedure is given the generic name of recrystallization.
Answer:
v₁ = 7.5mL
Explanation:
using the formula
m₁v₁=m₂v₂
given m₁=10x m₂=1x v₁=? v₂=75mL
10x × v₁ = 1x × 75mL
v₁ = 1x × 75mL / 10x
v₁ = 7.5mL
So, 7.5mL of 10x PBS should be added with 67.5mL of water
Answer:
heat energy
Explanation:
water in the sun begins to get hot
