Heptane is always composed of 84.0% carbon and 16.0% hydrogen. This illustrates the "law of definite proportions".
Answer: Option C
<u>Explanation:</u>
Proust's law states that every chemical compound used to made up of element constituents with constant proportions in terms of its mass and also independent from its sources and synthesis method. In 1779, Joseph Proust gave other names to the Proust's law as, the law of composition or definite proportions or constant compositions.
This can understood from given example like: Oxygen is composed of 8/9 of the mass of any sample of pure water while the hydrogen fills up the remaining 1/9 of the mass. The basis of stoichiometry is structured with the law of multiple proportions along the law of definite proportions.
Answer:
120 N
Explanation:
F=ma therefore 60kg times 2m/s^2 is 120 N
Electrical generator which operates using a magnetic field. It is the beginning of modern dynamos.
Supernova nucleosynthesis is also thought to be responsible for the creation of rarerelements heavier than iron<span> and nickel, in the last few seconds of a type II supernova event.</span>
The balanced force is required to be acting on the window washer to keep it in the same position.
<h3>What is Force?</h3>
The external effort causing the change in the state of motion of any object is known as force.
Forces are generally of two types namely balanced force and unbalanced force.
When an object is applied with more than one force, such that net force on the object is zero and due to this the state of motion of object remains unaffected, then such type of force is called balanced force.
Similarly, the forces on the object having some net magnitude and causing some motion to the object are known as unbalanced forces.
So as per the given problem, for keeping the window washer in the same position, it is required to apply with a balanced force.
Thus, we can conclude that balanced force is required to be acting on the window washer to keep it in the same position.
Learn more about the types of forces here:
brainly.com/question/13774406
