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Sedbober [7]
2 years ago
10

Newton’s second law of motion

Chemistry
1 answer:
Fiesta28 [93]2 years ago
3 0

When an object of mass 2Kg and applied force is 10N then acceleration is 5 m/s/s.

<h3>What is Newton's second Law?</h3>

Newton's second Law of motion will be represented as:

F = m.a, where

  • F = force
  • m = mass of object
  • a = acceleration

Acceleration for the first row will be calculated as:

  • a = 10/2 = 5 m/s/s

Acceleration for the second row will be calculated as:

  • a = 40/5 = 8 m/s/s

Mass for the third row will be calculated as:

  • m = 20/5 = 4kg

Mass for the forth row will be calculated as:

  • m = 45/45 = 1 kg

Force for the fifth row will be calculated as:

  • F = (3)(3) = 9 N

Hence, acceleration of the object whose mass is 2kg and force on that object is 10N is 5m/s/s.

To know more about newton's second law, visit the below link:
brainly.com/question/25545050

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Calculate the standard enthalpy change for the reaction at 25 ∘ C. Standard enthalpy of formation values can be found in this li
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Answer:

-179.06 kJ

Explanation:

Let's consider the following balanced reaction.

HCl(g) + NaOH(s) ⟶ NaCl(s) + H₂O(l)

We can calculate the standard enthalpy change for the reaction (ΔH°r) using the following expression.

ΔH°r = 1 mol × ΔH°f(NaCl(s)) + 1 mol × ΔH°f(H₂O(l)) - 1 mol × ΔH°f(HCl(g)) - 1 mol × ΔH°f(NaOH(s))

ΔH°r = 1 mol × (-411.15 kJ/mol) + 1 mol × (-285.83 kJ/mol) - 1 mol × (-92.31 kJ/mol) - 1 mol × (-425.61 kJ/mol)

ΔH°r = -179.06 kJ

7 0
3 years ago
When 0.514 g of biphenyl (c12h10) undergoes comubustion in a bomb calorimeter, the temperature increases from 25.80 °c to 29.40
slava [35]
The  change  in  internal   energy  of the   combustion  of  biphenyl  in  Kj  is  calculated  as follows

  =heat  capacity of  bomb  calorimeter x  delta  T  where  delta T   is  change   in temperature
delta T  = 29.4  -25.8= 3.6 c

= 5.86 kj/c   x  3.6 c =  21.096  kj


7 0
3 years ago
THE ANSWER IS <br> Magnesium hydroxide (Mg(OH)2): 58.33<br><br> Iron(III) oxide (Fe2O3): 159.70
dangina [55]

Answer:

Ok, thanks?

Have a good day

5 0
3 years ago
How many atoms are found in the products of the following chemical equation?
coldgirl [10]

There are 13 atoms in the product

<h3>Further explanation</h3>

Given

Reaction

H2SO4 + 2KOH --> K2SO4 + 2H2O

Required

The number of atoms

Solution

In a chemical equation, there are reactants on the left and products on the right

Reactants : H2SO4 + 2KOH

Products : K2SO4 + 2H2O

The number of atoms is determined by their reaction coefficient and the subscript of the atoms in the compound

K2SO4 (coefficient = 1) :

K = 2 atoms

S = 1 atom

O = 4 atoms

Total atoms = 7 atoms

2H2O(coefficient = 2) :

H = 2 x 2 = 4 atoms

O = 2 x 1 = 2 atoms

Total atoms = 6 atoms

Total = 13 atoms

5 0
3 years ago
You estimate that you sent 135 texts last week but when you get the bill, it was actually 175. Calculate the percent error
FinnZ [79.3K]

Answer: -40

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6 0
3 years ago
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