Chemistry Answers

why is beaker ,rather than a conical flask used ,when dissolving the solute.

Salt is often used to melt ice and snow on roads in the winter and the

temperature right now is -4.500ºC. How much NaCl (complete dissociation) would be

necessary to melt 1000kg of ice by bringing down the freezing temperature to -

4.500ºC?

when the solution has been made up ,why is it necessary to mix the contents of the flask thouroughly? what feature of the volumetric flask makes this particularly necessary

when the solution has been made up ,why is it necessary to mix the contents of the flask thouroughly

wich would be better salt for putting on icy roads NaCI or CaCIa? What conditions exist when the equilibrium point is reached further change in the volumes occurs?

 What is the difference between the external structure of a crystalline solid from an amorphous solid?

What is the density of N2O2 at STP?

What volume in litres does 350.5g of methane (CH4) gas occupy at STP.

How many atoms of Oxygen has are there in 120.0L?

The reaction between hydrochloric acid and aluminum produces hydrogen gas and aluminum chloride. How many moles of H2 can be obtained when 2.80 mol HCl reacts with an excess of Al?

6HCl+2Al⟶3H2+2AlCl3