Calculate the molecular mass of glucose (C6 H12 O6) molecule. Given ato. masses: H= 1.008amu C= 12.011amu O= 16.0amu.
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Explanation:

Molecular formula of glucose is C6H12O6 .

Atomic mass of C=12u 

Atomic mass of H=1u 

Atomic mass of O=16u 

Molecular mass = (6×12)+(12×1)+(6×16)=180u 

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.

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explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."