Answer:
The law of conservation of mass states that mass can neither be created nor destroyed in a chemical reaction. Thus, the amount of matter cannot change.
Explanation:
Answer:
Explanation:
Propyl and butyl groups are the alkyl groups formed by replacing the one hydrogen atom from their corresponding alkanes.
Propyl is formed from propane and has n-propyl and isopropyl alkyl isomers.
Butyl is from butane and has n-butyl, isobutyl , sec-butyl and tertiary butyl alkyl isomers.
The energy transferred is given as the product of power and time. The 1.4 kW kettle with boiled water produces 378 kJ of energy.
<h3>What is energy?</h3>
Energy is the quantitative property that determines the work done by the body in the form of heat and light.
The image showing the kettles with time and power is attached below.
Given,
Power of the kettle = 1.4 kW
Time taken = 4.5 minutes
If power = energy ÷ time
Then, energy = power × time
= 1.4 × 0.075
= 0.105 KWh
Therefore, 0.105 kWh or 378KJ is the energy transferred.
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Answer:
n .= 1 to 4
Explanation:
From the Planck 5
E = hc/lambda
Where lambda is wavelength
E= hf
We will explain the answer here with respect to wavelength. It should be understood that the higher the wavelength of transition, the lower the frequency.
This means that longer transitions will occur at lesser frequencies. From the options the biggest transition is from 2 to 94, while the smallest is from 1 to 4
The transition from 1 to 4 is expected to have the highest energy as it has the shortest wavelength,
Transition from 2 to 94 has the longest wavelength, lowest energy and least frequency
Answer:
<h2>251 g</h2>
Explanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volume
From the question we have
mass = 0.251 × 1000
We have the final answer as
<h3>251 g</h3>
Hope this helps you