Calculate the mass of sodium trioxocarbonate (iv) needed to give 50.4dm3 of carbon (IV) oxide at s. t.p in the following reaction.

Na2CO3(s) + 2HCl(aq) >2NaCl(aq) + CO2(g) + H2O(l)

[ Na = 23, O = 16, C = 12, molar volume of gas at s. t.p =22.4dm3]

it's c. elements are placed in rows based on how may valencies electrons have.

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".

explanation:

a