Physical Chemistry Answers

Vial contains radioactive iodine-131 with an activity level of 2.0 mCi. Thyroid test requires 3.0 mCi. How many mL needed to prepare solution?

how many molecules are there in 14g of nitrogen gas s.t.p (avrogadros number-6.02*10*23)

give some examples of intensive and extensive properties

I have a question in colligative properties that if there are compunds like NaCl , C6H12O6(glucose) , CaCl2(calcium cholride) of the same concentration and in aqueous solution how to find which has more lowering in vapour pressure ? Pls help....

what cause tonic water to foam when mixed with salt?

You explain how pool chemicals react to a friend, they tell you, "But I don't understand why the sodium hypochlorite won't react any more with the chloride ions and the hydrogen ions." Knowing that this reaction displays an equilibrium, what would be a good response to their comment? When people sweat, their bodies often exude salts (including chloride ions) and acidic compounds (that produce hydrogen ions when dissolved in water). For this reason, people are asked in public pools to shower before jumping into the pool water.

If 4.86 g of solid carbon dioxide was placed into an evacuated 2.00 L container, sealed, and then heated until it completely changed to a gas with a final temperature of 75 °C, what would be the pressure?

why is coastal fog so important to the plants and animals that live there?

as water is said to be universal solvent,means it can dissolve anything,then why benzene(c6h12o6) is not soluble in water?not any non-polar substance is soluble in water(h2o) then can we call water a universal solvent?

I have a doubt in elevation of boiling point and depression of freeing point.
Suppose you have three compounds K2SO4(potassium sulphate) , NaCl (sodium chloride) and
C6H12O6 (glucose). Then on what basis can you tell which will have more elevation in boiling point and more depression in freezing point when dissolved in water?