2. Which is a true statement about a zero net force?

Chemistry

2 answers:

bagirrra123 [75]4 years ago

8 0

Answer: the correct option is A (A zero net force causes no change to an object's

motion.)

Explanation:

Force is a vector quantity that causes an object to accelerate or change velocity when pushed or pulled. While a NET FORCE can be defined as the combination of all forces acting on an object which is equally capable of accelerating the object.

When a NET FORCE is equal to zero( that is zero net force),there will be no change to an object's motion. When the net force of an object is equal to zero , it shows the object is in either static equilibrium( the objects velocity is zero) or dynamic equilibrium(where the object is moving at constant velocity). In both cases, the object remains motionless because the net forces is equal to zero.

Brums [2.3K]4 years ago

7 0

Answer:b

Explanation:

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3 years ago

How many atoms are present in 98.1 grams of Ar? You may report your numerical answer in scientific notation use e-notation.

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Answer:

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Explanation:

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$98.1g \times \frac{1mol}{39.95g} =2.46 mol$

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In order to calculate the number of atoms of argon in 2.46 moles of argon, we have to consider the Avogadro's number: there are 6.02 × 10²³ atoms of Ar in 1 mole of Ar.

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3 years ago

How many moles of N2 are needed to make 5.0 moles of NH3?

Juli2301 [7.4K]

Answer:

The answer is "2.5 mole"

Explanation:

The reaction for producing $NH_3$ can be defined as follows:

Reaction:

$N_2+ 3H_2 \rightarrow 2NH_3$

According to the above reaction, to produce 2 moles of $NH_3$ we need 1 mole of nitrogen:

So, according to the question to produce 5.0 mole $NH_3$ the required $N_2$ :

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