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4 years ago

In a lab, the mass of object A is 65 kg. Object A weighs

Chemistry

2 answers:

AlekseyPX4 years ago

7 0

The answer to this is 637 N

Arte-miy333 [17]4 years ago

4 0

<u>Answer:</u> The weight of object A is 637 N

<u>Explanation:</u>

Weight is defined as the force exerted by the body on any surface. It is also defined as the product of mass of the body multiplied by the acceleration due to gravity.

Mathematically,

$W=mg$

where,

W = weight of the object A

m = mass of the object A = 65 kg

g = acceleration due to gravity on Earth = $9.8m/s^2$

Putting values in above equation, we get:

$W=65kg\times 9.8 m/s^2=637N$

Hence, the weight of object A is 637 N

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Harrizon [31]

Answer is: 2,469 mL give to the child.
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3 years ago

A compressed gas cylinder ar 135 atm and 23°C is in a room wheree a fire occurs the fire raises the temperature of the gas to 47

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3 years ago

Which reaction most accurately represents the dissociation of nitrous acid (hno2) in water?

yanalaym [24]

When nitrous acid (HNO₂) dissociates in water (H₂O), the reaction that best captures this process is:

HNO₂ (aq.) + H₂O ↔ H₃O⁺ (aq.) + NO₂⁻ (aq.)

How does one know about HNO₂?

The chemical designation for nitrous acid is HNO₂, and it is a monoprotic acid. Three elements—hydrogen(H), oxygen(O), and nitrogen(N), all compose it.
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Is HNO₂ a basic or an acid?

Acidity is assigned to nitrous acid (HNO₂). Once dissolved in water, it gives out H+ ions. Acid is a chemical that produces H+ ions in a water-based solution or gives the protons to other molecules.

Thus, HNO₂ is acid because it causes a mixture of water to contain H+ ions. In a 10 mM concentration, it possesses a pH of 2.67.

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2 years ago

How many protons neutrons and electrons are there in a neutral atom of 43k (potassium-43)?

Veronika [31]

Answer:

Number of Protons = 19

Number of Neutrons = 25

Number of Electrons = 19

Explanation:

Number of Protons:

The number of protons present in any atom are equal to the atomic number of that particular atom. Hence, as the atomic number of Potassium is 19 therefore, it contains 19 protons.

Number Neutrons:

The number of neutrons present in atom are calculated as,

# of Neutrons = Atomic Mass - # of protons

As given,

Atomic Mass = 43

# of Protons = 19

So,

# of Neutrons = 43 - 19

# of Neutrons = 24

Number of Electrons:

As we know for a neutral atom the number of electrons are exactly equal to the number of protons present in its nucleus. So, for 19 protons in neutral Potassium atom there must be 19 electrons.

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3 years ago

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GrogVix [38]

Answer:

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Explanation:

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3 years ago