Chemistry, 26.12.2020 14:00 swaise3300
1. A solution contains 43.5 g of water of NaCl. Determine its percentage by mass.
2. Calculate the molarity of a solution containing 16 g glucose per 300 ml solution.
3. 4o g Sodium Chloride solution contain 5 g of sodium chloride. Determine its percentage by mass.
4. 16 cm3 alcohol is present in 80cm3 of its solution in water. Determine the percentage by volume of alcohol in this solution.
5. Determine the amount of ammonium sulphate (NH4)2SO4 required to prepare 400cm3 of 4M solution. Molar mass of ammonium sulphate is 132.
6. What is the mass in grams of 1 x10^20 atoms of Na?
7. Calculate the molecular mass (in a. m.u) of each of the following substances:
(a) H2O (b) CH6
Answers: 3
Chemistry, 21.06.2019 16:30
Energy is released during which phase changes? check all that apply. boiling condensing depositing freezing melting subliming
Answers: 2
Chemistry, 22.06.2019 06:30
Predict whether the changes in enthalpy, entropy, and free energy will be positive or negative for the boiling of water, and explain your predictions. how does temperature affect the spontaneity of this process?
Answers: 1
Chemistry, 22.06.2019 09:30
Right anwser gets marked brainliest newton's discovery concerning how fast an object will change speed is the: 1st law 2nd law 3rd law universal gravitation
Answers: 1
Chemistry, 22.06.2019 18:00
Which three statements represent the benefits of performing experiments using computer simulations?
Answers: 2
1. A solution contains 43.5 g of water of NaCl. Determine its percentage by mass.
2. Calculate the...
English, 06.12.2021 03:00
English, 06.12.2021 03:00
History, 06.12.2021 03:00
History, 06.12.2021 03:00
Chemistry, 06.12.2021 03:00
Mathematics, 06.12.2021 03:00
Spanish, 06.12.2021 03:00
World Languages, 06.12.2021 03:00
History, 06.12.2021 03:00
Biology, 06.12.2021 03:00
Mathematics, 06.12.2021 03:00
Social Studies, 06.12.2021 03:00