Balance the reactions which form ions. Choose "blank" if no other coefficient is needed. Writing the symbol implies "1."

Answer:

Number of moles of oxygen atoms that weigh the same as a glass of water = 3.12 moles

Note: This question lacks certain figures. Below is a complete similar question.

An oxygen atom weighs 2.66*10^-23 g and a glass of water weighs 0.050 kg. What is the weight of one mole of oxygen atoms? Round your result to three significant figures. How many moles of oxygen atoms have a weight equal to the weight of a glass of water? Round your answer to two significant figures.

Explanation:

One mole of a substance comprises the Avogadro number of particles, which is 6.02 * 10²³.

Hence, one mole of oxygen atoms contains 6.02*10²³ atoms.

Weight of a single oxygen atom = 2.66*10⁻²³ g

Weight of one mole of oxygen atoms = weight of a single atom multiplied by the number of atoms in one mole.

Weight of one mole of oxygen atoms = 2.66*10⁻²³ g * 6.02*10²³ = 16.01 g

A glass of water weighs = 0.050 kg or 50 g.

To calculate how many moles of oxygen atoms weigh the same as a glass of water (i.e., 50 g), the following formula is applied;

number of moles = mass/molar mass

mass of oxygen atoms = 50 g, molar mass or weight of one mole of oxygen atoms = 16.01 g

Thus, the number of moles of oxygen atoms = 50 g / 16.01 g = 3.12 moles

As the ball descends down the hill, its potential energy diminishes while its kinetic energy rises.

The ball's potential energy will decrease as it moves down the slope, and its kinetic energy will experience an increase.

Kinetic energy refers to the energy possessed by an object in motion.

K. E = m v²

where m is the mass of the ball

and v represents the ball's velocity.

Potential energy is the energy associated with an object's position as it traverses down a slope, expressed as:

P.E = mgh

with m as the mass of the ball,

g as gravitational acceleration, and h as the height.

It is clear that as the object descends, its height decreases, while its velocity increases.

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Potential energy