The signal for skeletal muscle to contract is initiated by..?

How is the classical pathway of the complement system is activated?

The neurotransmitter responsible for signal transduction at the neuromuscular junction is..?

What does this equation tell you?

Henry’s Law states that:

What mass (in grams) of NaOH do we need to prepare 250 mL of a 4 M solution? (Molar mass of NaOH = 40 g/mol) 

Consider the equilibrium reaction H2 + I2 ⇌ 2HI. The equilibrium constant for this reaction is represented by which one of the following?  

Questions 41 – 43 relate to the following problem: A solution of sodium hydroxide contained 0.95 mol dm-3. Using phenolphthalein indicator, titration of 50.0 cm3 of this solution required 27.0 cm3 of a hydrochloric acid solution for complete neutralisation.                                       Question 42: How many moles of hydrochloric acid were neutralised? Give your answer to 4 d.p.

Are these molecules geometric isomers of each other, Yes or No?   

Consider the equilibrium reaction N2 + 3H2 ⇌ 2NH3 Determine the equilibrium constant for this reaction if = 0.175 mol/L; = 0.75 mol/L; = 0.55 mol/L Give your answer to 4 s.f.