Chemistry, 03.10.2021 14:00 yarrito20011307
Đốt cháy bột Al kim loại trong không khí thu đc nhôm oxit(Al2O3)
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Nếu đốt cháy hết 4,05g bột Al thì thu dcd bao nhiêu gam Al2O3
Để thu đc 25,5g Al2O3 thì cần đốt cháy hết bnh gam bột Al và cần dùng ít nhất bnh lí O2
Answers: 1
Chemistry, 22.06.2019 07:00
How many moles are in 7.2 x 10^23 carbon molecules? (*round to the nearest hundredth and include the unit "mol c" after your number) question 6 options:
Answers: 2
Chemistry, 22.06.2019 18:30
The table lists the lattice energies of some compounds.compoundlattice energy (kj/mol)lif –1,036licl –853naf –923kf –821nacl –786which statement about crystal lattice energy is best supported by the information in the table? the lattice energy increases as cations get smaller, as shown by lif and kf.the lattice energy increases as the cations get larger, as shown by lif and licl.the lattice energy decreases as cations get smaller, as shown by nacl and naf.the lattice energy decreases as the cations get smaller, as shown by naf and kf.
Answers: 3
Đốt cháy bột Al kim loại trong không khí thu đc nhôm oxit(Al2O3)
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