Chemistry, 04.07.2019 21:30 lexipeacemaker
Noble gases (18): (name all noble gases) • these elements do not easily combine with other elements. they are odorless, colorless and therefore were difficult to discover. • when air is cold, oxygen liquefies first at -18o celsius. about 1% of the air is still gas composed of the noble gas entire noble gas short version of noble gas • one noble gas was discovered on the sun. it’s spectrum was identify first. this is • one of noble gas is radioactive and seeps up your basement floors and walls. it is • this noble gas is used in electronic flashes and other bright lights. it is• this noble gas is best known for its orange color in gas discharge tubes. it is used for signs that bear its name. it is
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Chemistry, 23.06.2019 05:30
For the reaction i2(g)+br2(g)←−→2ibr(g), kc=280 at 150 ∘c. suppose that 0.450 mol ibr in a 2.00-l flask is allowed to reach equilibrium at 150 ∘c. what is the equilibrium concentration of 2ibr, i2, br2
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Chemistry, 23.06.2019 08:30
What percentage of energy used in the u.s is produced from fossil fuels
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Chemistry, 23.06.2019 12:30
Growing crops in places where major pests don't live using beneficial insects to eat harmful insects using a rat trap instead of a rodenticide developing drought-resistant tomato plants using beneficial insects or natural oils to repel pests planting a different crop every year to fake out the pests keeping food covered to deter ants and rodents developing bean plants with a resistance to fungus picking caterpillars off tomato plants cultivation practice biological control cultural control genetic resistance natural chemicals
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Noble gases (18): (name all noble gases) • these elements do not easily combine with other element...
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