Answer:
covalently
Explanation:
Flubber is an example of matter because it is a physical substance (solid) that occupies space.
Flubber is a gelatinous rubbery polymer that is produced by cross-linking a boron compound with polyvinyl alcohol (PVA).
A matter is any physical substance that occupies space and has inertia. Matter is composed of many types of particles that have mass and sizes and it can exist in different states such as solid, liquid and gas.
Flubber is fake rubber. (It rhymes)
And since it is a solid that takes up space, it is matter.
There are 12.052 ×10²³ atoms in 54 g of aluminium according to the concept of Avogadro's number.
Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.
It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .
According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.
Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number
Substituting the values in the formula,54/26.98×6.022×10²³=12.052×10²³ atoms .
Hence, there are 12.052×10²³ atoms in 54 g of aluminium.
Learn more about Avogadro's number ,here:
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B) Light bends around a sharp edge
C) A pendulum swings back and forth
D) A balloon inflates when air is blown into it