Chemistry, 02.10.2020 16:01 tornadowolfcosplay
O padrão primário hidrogenoftalato de potássio (ou biftalato de potássio ou ftalato ácido de potássio,
KHC 8 H 4 O 4 ) foi utilizado para padronizar uma solução de hidróxido de sódio. Para massas do padrão
iguais a 0,3425 g, 03505 g e 0,3287 g foram gastos respectivamente 25,55 mL, 26,70 mL e 24,35 mL da
solução alcalina. Determine a concentração da solução padronizada com os algarismos significativos.
Answers: 3
Chemistry, 22.06.2019 12:30
Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together
Answers: 1
Chemistry, 22.06.2019 15:30
The gulf stream is a warm water current that flows away from the equator to northern europe. witch of these does it cause. a. crashes of warm and cool water in the ocean b.colder climates near the equator c.large waves on the cost of europe d.warm climates in northern europe
Answers: 1
Chemistry, 22.06.2019 19:30
Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.
Answers: 1
O padrão primário hidrogenoftalato de potássio (ou biftalato de potássio ou ftalato ácido de potássi...
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