Cho mình hỏi Câu 1:Tính nồng độ mol/l của các dung dịch sau:
a-Trong 100ml dung dịch có hòa tan 1,96 g H 2 SO 4
b-Dung dịch NaOH 10% có D=1,22g/ml (C M =10.D. C%/M)
c-Thêm vào nước 200 gam dung dịch HCl 3,65% để tạo thành 2 lit dung dịch.
Mình cảm ơn nhiều !!!

What is the maximum number of electrons that an atomic orbital can contain?

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.