Q1. which is the following statements is correct :
1- The use of paper for weighing is not acceptable practice for quantitative determination.
2- Cleaning solution is prepared from sodium dichromate and nitric acid.
3- Volumetric glassware shouldn’t be calibrated before use.
4- Chemical are placed directly on the balance pane.
5- The object to be weighing shouldn’t be at room temperature.
Answers: 2
Chemistry, 22.06.2019 08:00
An observation that requires measurement is called quantitative observable or qualitative
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What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles
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Chemistry, 23.06.2019 00:30
Titration reveals that 11.6 ml of 3.0m sulfuric acid are required to neutralize the sodium hydroxide in 25.00ml of naoh solution. what is the molarity of the naoh solution?
Answers: 1
Chemistry, 23.06.2019 10:30
When a chemist collects hydrogen gas over water, she ends up with a mixture of hydrogen and water vapor in her collecting bottle if the pressure in the collecting bottle is 97.1 kilopascals and the vapor pressure of the water is 3 2 kilopascals, what is the partial pressure of the hydrogen?
Answers: 1
Q1. which is the following statements is correct :
1- The use of paper for weighing is not acc...
1- The use of paper for weighing is not acc...
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