Read More
Date: 8-8-2016
3015
Date: 19-5-2019
555
Date: 21-5-2019
637
|
Calculating the Amount of a Substance in Moles or Millimoles
The two examples that follow illustrate how the number of moles or millimoles of a species can be determined from its mass in grams or from the mass of a chemically related species.
Example .
Find the number of moles and millimoles of benzoic acid (M = 122.1 g/mol) that are contained in 2.00 g of the pure acid.
Solution
If we use HBz to represent benzoic acid, we can write that 1 mole of HBz has a mass of 122.1 g. Therefore,
|
|
دراسة يابانية لتقليل مخاطر أمراض المواليد منخفضي الوزن
|
|
|
|
|
اكتشاف أكبر مرجان في العالم قبالة سواحل جزر سليمان
|
|
|
|
|
المجمع العلمي ينظّم ندوة حوارية حول مفهوم العولمة الرقمية في بابل
|
|
|