Answer:
is a well-sustantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment.such fact- supported theories are not "guesses" but reliable accounts of the real worlds.
Answer:
the mass number decreases by 4 and the atomic number decreases by 2
Answer: Oxalic Acid is and
Arrhenius Acid.
Explanation: According to
Arrhenius Theory of acid and base, "Acid is any substance which when dissolved in water produces H⁺ Ions".
Therefore, Oxalic Acid is a diprotic substance, which is capable of donating protons in water. This acidity of oxalic acid can be dedicated to the stability of
conjugate base, this stability comes from resonance of the negative charges on
Oxalate ion. Below reaction shows the dissociation of Oxalic Acid into Protons and Oxalate Ion.
8) The gravitational force is a force of attraction between two objects. It can be expressed mathematically as:
F = G m₁*m₂/d² ------(1)
m₁ and m₂ are the masses of two interacting systems
d = distance between them
G = gravitational constant
Thus according to equation(1), the gravitational force is directly proportional to the mass of the objects. Greater the masses, stronger will be the force of attraction.
In this case, the distance (d) and the one of the masses i.e. mass of earth would be the same for both situations. However, since an elephant would weigh more than a human, the gravitational force will be stronger between an elephant and earth.
9) Since the masses of spheres is the same, the gravitational force between the red and blue spheres would be the same as well, provided the distance d remains constant.