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tiny-mole [99]
3 years ago
14

1.which of newton's laws describe the mathematical relationship between force, mass, and acceleration

Chemistry
1 answer:
77julia77 [94]3 years ago
6 0

1. By Newton's second law, the mathematical relationship between force, mass and acceleration can be described.

2. An object will undergo acceleration only when an unbalanced force will be acting on any object.

Answer:

Explanation:

1. The mathematical relationship between force, mass and acceleration is done in the Newton's second law of motion. In this law, it is stated that any external unbalanced force acting on any object will be equal to the rate of change of momentum. In other words, the external unbalanced force will be proportional to the acceleration exerted on the object and also to the mass of the object.

F = \frac{dp}{dt}

Since, momentum p = mass * velocity = mv

F = \frac{d(mv)}{dt} = m\frac{dv}{dt}+v\frac{dm}{dt}

Since, the mass will be constant, dm/dt = 0, so F = ma

2. Also from this law, it can be understood that an object will undergo acceleration only when an unbalanced force will be acting on any object.

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a compound has an empirical formula of CH2 what is the molecular formula if it's molar mass is 252.5 grams/mol
Goryan [66]

Empirical formula is the simplest ratio of components making up the compound. the molecular formula is the actual ratio of components making up the compound.

the empirical formula is CH₂. We can find the mass of CH₂ one empirical unit and have to then find the number of empirical units in the molecular formula.

Mass of one empirical unit - CH₂ - 12 g/mol x 1 + 1 g/mol x 2 = 12 = 14 g

Molar mass of the compound is - 252 .5 g/mol

number of empirical units = molar mass / mass of empirical unit

                                           = \frac{252.5 g/mol}{14 g}

                                           = 18 units

Therefore molecular formula is - 18 times the empirical formula

molecular formula  - CH₂ x 18 = C₁₈H₃₆                                            

molecular formula is C₁₈H₃₆  

8 0
3 years ago
What is the pH of a 0.028M solution (pH= -log(M))<br><br> A) 3.56<br> B) 2.88<br> C) 1.55<br> D) 1
kupik [55]

Answer:

1.55

Explanation:

-log(M)=pH

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4 0
3 years ago
______ reactions generate thermal energy in a nuclear power plant as water is changed into steam
Jet001 [13]
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3 years ago
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Calculate the volume of a 0.5M solution containing 20g of NaOH
Tju [1.3M]

Answer:

1L

Explanation:

First, let us calculate the number of mole present in 20g of NaOH. This is illustrated below:

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Molar Mass of NaOH = 23 + 16 + 1 = 40g/mol

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Number of mole = Mass /Molar Mass

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From the question given, we obtained the following data:

Molarity = 0.5M

Mole = 0.5mole

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Molarity = mole /Volume

Volume = mole /Molarity

Volume = 0.5/0.5

Volume = 1L

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3 years ago
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What is the mole-to-mole ratio between N2 and H2?
spin [16.1K]
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1 mole<span> N2 / </span>3 moles<span> H2.</span>
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