Chemistry, 26.06.2019 04:40 jordynj6363
1. bromine is a a. black solid b. red liquid c. colourless gas d. highly inflammable gas 2. the hardest substance available on earth is a. gold b. iron c. diamond d. platinum 3. the variety of coal in which the deposit contains recognisable traces of the original plant material is a. bitumen b. anthracite c. lignite d. peat 4. tetraethyl lead is used as a. pain killer b. fire extinguisher c. mosquito repellent d. petrol additive 5. which of the following is used as a lubricant? a. graphite b. silica c. iron oxide d. diamond
Answers: 1
Chemistry, 21.06.2019 22:30
Consider the following system at equilibrium. caco3(s) ca2+(aq) + co32–(aq) the addition of which compound will cause a shift in equilibrium because of a common ion effect? ccl4 co2 cuso4 na2co3
Answers: 3
Chemistry, 22.06.2019 13:30
Ants live on acacia trees in south america. the ants feed on sugars secreted by the trees. the trees provide room for the ants to live. the ants sting any other insect or animal that comes to eat the trees. what type of relationship is this?
Answers: 1
Chemistry, 22.06.2019 14:30
Which of the following represents the ester functional group? a. -coo- b. -cho c. -cooh d. c=o
Answers: 1
1. bromine is a a. black solid b. red liquid c. colourless gas d. highly inflammable gas 2. the hard...
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