Explanation:
The chemical reaction equation will be as follows.
As 1 mole 
reacts with 1 mole of 
Hence, moles of = Molarity × Volume (in mL)
= 0.5 × 38.0 mL
= 0.019 mol
Moles of = Molarity × Volume (in mL)
= 0.6 × 42.0 mL
= 0.0252 mol
As moles of CuS is less than the moles of . This means that CuS is the limiting reagent.
Thus, maximum moles of CuS formed are 0.019 mol. As molar mass of CuS is 95.6 g/mol.
Therefore, maximum mass of CuS can be formed is 
= 1.8164 g
Thus, we can conclude that maximum mass of CuS formed is 1.8164 g.
3 mole of O2 produce=2 iron oxide
0.5 of O2 produce=x
0.5 X 2/3
X=0.33 mole of iron oxide
There are 3 sig figs. 8 and 2 are obvious. The ending 0 is significant because it is at the end of a decimal number, and doesn't have to be measured.
Answer:
As the axial tilt increases, then the seasonal contrast increases so that winters are colder and summers are warmer in both hemispheres. The northern hemisphere is tipped away from the Sun, producing short days and a low sun angle. What kind of effect does the earth's tilt and subsequent seasons have on our length of daylight (defined as sunrise to sunset). Over the equator, the answer is not much.
As for #5, it's mixed at the end of my answer, but just remember the spring equinox marks the change from 24 hours of darkness to 24 hours of daylight at Earth's poles .
Salivary amylase
pepsin .hope it helps...
Digestion is the breakdown of carbohydrates, proteins and fats into small soluble substances to be absorbed into the blood. Amylase, proteases and lipases are enzymes that are important in digestion.
