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3 years ago

Link between mass and force of gravity?

2 answers:

8 0

Mass x Force of gravity = Weight

Weight is a force.

On Earth, the force due to gravity is ~9.81 N/Kg. So an object of 100 Kg will have a weight of ~981 N

eduard3 years ago

3 0

Force of gravity is what we call "weight".

It's the product of (mass) x (acceleration due to gravity).

On Earth, acceleration due to gravity is about 9.81 meters per second-squared.
It's different in other places. Example: It's about 1.62 on the Moon.

So the weight of any mass on Earth is (9.81) x (the mass), in Newtons.
The weight of the SAME mass on the Moon is (1.62) x (the mass), in Newtons.

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2 years ago

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Which is the correctly balanced equation for the reaction of rust, Fe2O3, and hydrochloric acid, HCl?

Mariana [72]

Answer: Option (c) is correct answer.

Explanation:

The given reaction equation is as follows.

$Fe_{2}O_{3} + HCl \rightarrow FeCl_{3} + H_{2}O$

The number of atoms on reactant side are as follows.

Fe = 2
O = 3
H = 1
Cl = 1

The number of atoms on product side are as follows.

Fe = 1
O = 1
H = 2
Cl = 3

Therefore, in order to balance the equation we will balance the number of atoms in both reactant and product side.

Since number of Fe atoms in reactant side is 2, therefore, multiply $FeCl_{3}$ by 2 in the product side.

Number of O atoms in reactant side is 3, therefore, multiply $H_{2}O$ by 3 in the product side.

Now, the number of H atoms on product side is 6, therefore, multiply HCl by 6 in the reactant side.

The number of chlorine atoms on both reactant and product side equals 6.

Thus, the equation will become as follows.

$Fe_{2}O_{3} + 6HCl \rightarrow 2FeCl_{3} + 3H_{2}O$

Hence, the equation is balanced.

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3 years ago

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Answer:

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2 years ago

Is Radioactive decay a way to find the relative age of a rock? True False

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3 years ago

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