Explanation:
Para balancear un ecuacion quimica necesitas un coeficiente, eso es un numero entero. Asegurate de que haya el mismo número de átomos a cada lado de la flecha.
1s2 2s2 2p6 3s2 3p1 is the electron configuration of Aluminum, written as Al.
Yes. Percent yield shows how efficient one's method is. If his isolated caffeine proved to be at only 1.5%, compared to least 50% as in many of the previous experiments, the student should be very concerned as it shows that something caused the yield to sharply drop.
Answer:
Explanation:
First we need to find how many moles of ammonium weigh 62 grams.
Molar mass of NH4 = (14.0)+(4*1.0) grams
or 18.0 grams/mole
62 (g)/18(g/mole) = 3.444... moles of NH4
If it is dissolved in 5 litres of water, the concentration will be 3.444moles/5L
or 0.6888 M.
