Answer:
Explanation:
Chemical reactions involve combining different substances. The chemical reaction produces a new substance with new and different physical and chemical properties. Matter is never destroyed or created in chemical reactions. The particles of one substance are rearranged to form a new substance.
They all take nutrients out of the soil which leaves the soil infertile
Volcano's and earthquakes are both outcomes from a collision of continental plates.
The value of
of
is 1.7×
.
So, option C is correct one.
Calculation,
Number of moles of
= mass/molar mass = 0.45/278.1 = 1.618×
moles
Concentration of
and
ion
Molarity of
= Number of moles of solute /volume in lit
Molarity of
= 1.618×
moles /0.1 lit = 0.0162 M
→
+ 2
For certain amount of
, twice this amount of
ion formed.
The concentration of
ion formed = 2× 0.0162 M = 0.0324 M
Now,
of
= [
]
= 0.0162 ×
= 1.7×
.
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The mass of an ink pen is constant no matter what instrument you use. If you weigh the ink pen on a simple platform balance, it would weigh <em>approximately 16 grams</em>. To measure this mass using a triple beam balance, follow these instructions:
1. Empty the pan, then move the three sliders on each of the beams to left ton the zero mark.
2. Place the ink pen on the pan. As a result, the beams are no longer on the zero mark. Slide the beams until the pointer is at zero.
3. To read the weight, add all the numbers in the three slider beams.