Answer:
m = 8.1 kg
Explanation:
Density of metal ball, d = 8.96 g/cm³
Diameter of ball, d = 12 cm
Radius of ball, r = 6 cm
Density of an object=mass/volume
The metal ball is in the shape of sphere whose volume is given by :
Now using formula,
or
m = 8.1 kg
So, the mass of the metal ball is 8.1 kg.
Explanation:
Water the essential constituent of protoplasm of living cells because it is directly involved in countless biochemical reactions like photosynthesis and respiration without it cells couldn't move waste and by-products taking nutrients perform intracellular Transportation functioning and signaling
Answer:
Since heat is released for
C
3
H
8
(
g
)
+
5
O
2
(
g
)
→
3
CO
2
(
g
)
+
4
H
2
O
(
g
)
+
2219.9
kJ
,
we say that
Δ
H
∘
C
=
−
2219.9 kJ/mol propane
. We approximate that this is the change in potential energy for the reactants going to the products.
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https://www.khanacademy.org/
The above is for an endothermic reaction.
A certain feature of combustion reactions suggests that you should draw the diagram DIFFERENTLY from what you see above. How should the energy of the products compare with that of the reactants for combustion reactions?
The best assessment of Gina's prediction is that the several medium-sized cubes will dissolve faster than the large cube of sugar.
<h3>How does surface area affect solubility?</h3>
The surface area of a substance refers to the total area on the surface of that object.
Surface area plays a vital role in the dissolution of a substance. When a solute dissolves, the action takes place only at the surface of each particle.
This suggests that when the total surface area of the solute particles is increased, the solute dissolves more rapidly, hence, the best assessment of Gina's prediction is that the several medium-sized cubes will dissolve faster.
Learn more about surface area at: brainly.com/question/2835293
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