anonimo

a student heats 2.005 g of a copper bromide hydrate of unknown molecular formula, completely driving off the water of hydration, and notices that the weight drops to 0.998g. Upon reduction with excess aluminum metal, the copper ions are reduced to 0.442 g...

su madre esta en el hospital

4.¿A qué hora vas A acostarte esta noche. Yo voy A acostarme a las once de esta noche.

y = 15-5x replace y into the other eq 4x+4(15-5x) = 12 4x + 60 - 20x = 12 -16x = -48 x = 3 plug 3 onto the fisrt or second eq to get Y.. y = 15-5x y = 15-5(3) y = 0

3.61*10^-9

B=2*(m*g)/sqrt(3)

gold is a element like silver, but the difference is that the atoms are completely different because when you see that on a microscope, gold is not going to have the same amount of protons, neutrons and electrons like silver does because they are differen...