I don’t see the video but I can still answer number 2! One example is when you boil water it evaporates as it gets hot. Another example is when you take a shower, the water on your body evaporates as you dry!
%= total atomic mass of element/formula mass of the compoundX100
atomic mass(Ar) of sulfur- 32
Ar of Cu- 64
Ar of O-16
64+32+(16x4)= 160
32/160=0.2
0.2x100=20
20%
Answer:
Are long chains of sugar units arranged to form starch or fiber.
Explanation:
The carbohydrates are compounds formed by carbon (C), hydrogen (H) and oxygen (O), and they are composed for single or multiple sugars. When composed by a single sugar (as glucose) it's called a simple carbohydrate, or monosaccharide. When it's composed of two units of sugar, it's called a disaccharide.
The carbohydrates that are composed of a long chain of sugar units are called polysaccharides, or complex carbohydrates, and they are the complex sugars used as energy reservations or as structural, so they from starch or fiber.
Answer:
9256.5 g/ml
Explanation:
Use the formula,
Density = mass/volume
;Where you need to calculate the volume change firstly,
Volume = 238.0 - 207.4
;Volume = 30.6 ml
; Hence for calculating density,
; Density = 302.5 × 30.6
; Density = 9256.5 g/ml
it is B because i am big brain.