In an experiement things that are changing are called variables.
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Answer
Answer is option B coz da negative charge r more thn positive
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Percent Composition
1. Find the molar mass of all the elements in the compound in grams per mole.
2. Find the molecular mass of the entire compound.
3. Divide the component's molar mass by the entire molecular mass.
4. You will now have a number between 0 and 1. Multiply it by 100% to get percent composition.
Velocity = 15 m/s
90/2 = 45 m
45/3 (seconds to reach) = 15 m
It will sink below the surface. Since dish soap is a surfactant, it will alter the water's surface tension. Lowering the surface tension, the water will no longer be able to support the mass of the twig.