What name is given to an action such as the generation of action potential by a neuron which occurs either completely or not at all.

In a particular type of organism eggs ends sperms have 5 chromosomes but other cells have 10 chromosomes. Observations like this inspired a particular type of hypothesis. What is that type of hypothesis?

A buffer is prepared by adding 50.0cm2 of 0.100mol/dm3 KOH solution to 150cm2 of 0.100mol/dm3 ethanoic acid. Calculate the pH of the resulting buffer. Pka of ethanoic acid is 4.76. You may give your answer as a logarithm expression.

The buffer prepared by adding 150cm3 of 0.100mol/dm3 ethanoic acid solution to 50.0 cm3 of 0.100 mol/dm3 KOH solution is not the best buffer that can be prepared with those two reagent. What can be done to obtain a better buffer?

Explain why phenolthaline is a suitable indicator for the titration of solution of ethanoic acid and NaOH.

Solve for x given 125x+1 = 1/25

Find the solution set for the quadratic inequality x2 – 3x -4 < 0.

If the vectors a = 2i +3j and b = 3xi + 10j are perpendicular. Find the value of x.

What is the work done by 3 mole of an ideal gas when it expands from 20m3 to 25m3 at a constant pressure of 200.

A 50 g pellet is launch at 80 m/s vertically upward from the ground. How long does the pellet remain air bound?

Express 500 e.V in S. I. base unit.

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