During filtration, some of the particles pass through the filter while others, being larger, are trapped. But no molecules are changed in structure in any way, which is the primary requirement of a chemical …

"a)" 1.25 times 10^(- 13) "N" "b)" 2.89 times 10^(- 2) "N/m" "1" "a)" We are given two vectors, one for the velocity (vec(v)) and one for the magnetic field (vec(B ...

Darwinism is an effort to explain the diversity of life by natural causes. Darwinism is based on Charles Lyell's theories of geology that everything happens by slow gradual changes (uniformtarism ) Darwin …

When should vacuum filtration be used? What is the difference between copper (II) sulphate trihydrate, copper (II) sulphate pentahydrate, and anhydrous copper (II) sulphate?

This is a long question. It has a long answer. I must point out that all the substances in the equation are soluble in water, so there is actually No Reaction. If there were a reaction, this is how you would …

Here the mass of He gas w=11.28g The molar mass of He M_ (He)=4g/"mol" So number of moles of He in the sample n_ (He)=w/M_ (He)=11.28/4=2.82mol Now initial volume of the gas V_1=63.2L Initial …

Explanation: Note that the denominator is: #x^2+2x+1 = (x+1)^2# so we can substitute #t=x+1#, #x=t-1#, #dx=dt# and have: #int (x^3dx)/ (x^2+2x+1) = int ( (t-1)^3dt)/t ...

a^4-2a^2b^2-2a^2c^2-2b^2c^2+b^4+c^4 Write as (a^2+b^2-c^2)^2-4a^2b^2 color (white) (-)a^2 (a^2+b^2-c^2) =a^4+a^2b^2-a^2c^2 color (white) (-)b^2 (a^2+b^2-c^2)= 0color ...

Using de Moivre's identity #sin x= (e^ (ix)-e^ (-ix))/ (2i)# we have # (e^ (3ix)-e^ (-3ix))/ (2i)+ (e^ (ix)-e^ (-ix))/ (2i)=0# and now using #a^3-b^3= (a-b) (a^2+ab+b ...

Make it clear what kind of concentration you are going to calculate.