Chemistry, 29.08.2020 17:01 queenkimm26
Calculate the moles of anhydrous CuSO4 present in a sample with 0.5 g CuSO4 at a molar mass of 159.61 g/mol.
Answers: 3
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Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent
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Chemistry, 22.06.2019 11:00
When hydrochloric acid reacts with potassium hydroxide solution, the following reaction occurs. hcl (aq) + koh (aq) h2o (l) + kcl (aq) the reaction gives off heat energy, so it is an reaction.
Answers: 1
Chemistry, 22.06.2019 12:40
In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false
Answers: 2
Chemistry, 22.06.2019 14:00
The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.
Answers: 3
Calculate the moles of anhydrous CuSO4 present in a sample with 0.5 g CuSO4 at a molar mass of 159.6...
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