True or false
1. The valence number of Sulphur in H2S is 1.
2. The symbol of potass...
Chemistry, 27.05.2020 10:57 laurenec49
True or false
1. The valence number of Sulphur in H2S is 1.
2. The symbol of potassium is derived from English name.
3. The apparatus used to carry out distillation process is filter pape
4. Alcohol and water are immiscible liquids separated by decantati
Answers: 1
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Which uses electromagnetic radiation to discover the properties and composition of bodies in space? space probe space station space shuttle space observatory
Answers: 2
Chemistry, 22.06.2019 11:00
Which are examples of how technology has advanced scientific understanding.1using hot water to sterilize medical equipment.2transplanting a human organ into another individual.3inserting genes from one sheep into another cell to make a cloneunderstanding the different structures that make up a cell.4examining microorganisms from the deepest parts of the ocean
Answers: 2
Chemistry, 22.06.2019 13:50
Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.
Answers: 3
Chemistry, 22.06.2019 20:30
The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?
Answers: 3
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