The mass of an object is 18g and its volume is 9cm^3. sink or float ?
1 answer:
Explanation:
In order to find whether it will sink or float in water we must first find the density of the object
The density of a substance can be found by using the formula
From the question
mass = 18 g
volume = 9 cm³
So we have
We have the density as 2.0 g/cm³
The object will sink in water since it's density is greater than that of water which is 1.0 g/cm³
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- Atomic weight of copper = 63.5 g
- 1 mole of copper contains = 63.5g = 6.023 × 10²³ atoms of copper
- 1 g of copper contains
= 9.4 × 10²¹ atoms
- Therefore, 3.11g of copper contains
- = 29.234 × 10²¹ atoms
Hope you could get an idea from here.
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