W = AB x F x Cos < AB, F
or just W= AB x F for short
Answer is: a) in the presence of a base.
Phenolphthalein is colorless in acidic solutions and pink in basic solutions.
Acid-base indicators are usually weak acids or bases and they are chemical detectors for hydrogen or hydronium cations.
Example for acid-base indicator is phenolphthalein (molecular formula C₂₀H₁₄O₄).
When solution turns phenolphthalein pink, it means it is basic (pH>7).
Answer:
the 4th one
Explanation:
kinitc energy formula is1/2mv^
there is mass ,and velocity (speed)
I hope it help
Answer:
The ion will repel the substance because it has more protons than electrons.
Explanation:
Answer:
Explanation:
The equation for mass is:
We plug in the given values into the equation:
