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Angelina_Jolie [31]
3 years ago
5

How many atoms are represented by one formula unit of aluminum sulfite, al2(so3)3?

Physics
1 answer:
ratelena [41]3 years ago
4 0
Formula unit is the empirical formula of an ionic or a covalent compound. It is the chemical formula that gives the proportions of the elements present in a certain compound however it does not give the actual numbers or the arrangement of the atoms. For this case, there are 14 atoms of different elements that is involved in the compound.
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a ball drops some distance and loses 30 j of gravitational potential energy. do not ignore air resistance. how much kinetic ener
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Thus, more than 30 J of potential energy can be loosed by the ball. Thus, the gravitational potential energy of the ball is more than 30 J.

If there is no air resistance, the ball's potential energy is entirely transformed into kinetic energy. When air resistance is taken into account, a portion of the potential energy is used to overcome it. Thus, AU > AKE. In the current scenario, a ball gains 30 J of kinetic energy while falling and is treated as encountering air resistance. The energy that an object retains due to its position in relation to other objects, internal stresses, electric charge, or other factors is known as potential energy in physics. The potential energy will be transformed into kinetic energy if the stones fall. High on the tree, branches have the potential to fall, which gives them energy. Chemical potential energy exists in the food we eat.

Learn more about potential energy here:

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1 year ago
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On a roller coaster ride at an amusement park, a car travels from 7.6 m/s to 56 m/s in 3 seconds. whats the cars acceleration?
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Acceleration is defined as rate of change in velocity

So we can write its formula as

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now we will plug in all values in the above equation

a = \frac{56 - 7.6}{3}

a = \frac{48.4}{3}

a = 16.13 m/s^2

so here roller coaster will accelerate at rate of 16 m/s^2 and hence correct answer is "option d"

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