The mass of an atom is measured in a unit named the
. fill in the blank please hel...
Chemistry, 18.03.2020 18:28 emmajules889
The mass of an atom is measured in a unit named the
. fill in the blank please hel
Answers: 2
Chemistry, 22.06.2019 03:40
Astudent is given a sample of a blue copper sulfate hydrate. he weighs the sample in a dry covered porcelain crucible and got a mass of 23.875 g for the crucible, lid, and sample. the mass of the empty crucible and lid was found earlier to be 22.652 g. he then heats the crucible to expel the water of hydration, keeping the crucible at red heat for 10 minutes with the lid slightly ajar. on colling, he finds the mass of crucible, lid, and contents to be 23.403 g. the sample was changed in the process to very light clue anhydrous cuso4. if there are again 100.0 g of hydrate, how many grams of cuso4 are in it? how many moles of cuso4? (hint: molar mass of cuso4 = 159.6 g / mole. what per cent of the hydrate is cuso4? you may convert the mass of cuso4 to moles.)
Answers: 3
Chemistry, 22.06.2019 05:30
According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc
Answers: 3
Chemistry, 22.06.2019 06:00
Compare and contrast physical changes with chemical changes.
Answers: 3
Chemistry, 22.06.2019 13:50
Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.
Answers: 1
Mathematics, 12.04.2021 05:10
English, 12.04.2021 05:10
Mathematics, 12.04.2021 05:10
Mathematics, 12.04.2021 05:10
Biology, 12.04.2021 05:10
Mathematics, 12.04.2021 05:10
Advanced Placement (AP), 12.04.2021 05:10
English, 12.04.2021 05:10
Biology, 12.04.2021 05:10
Social Studies, 12.04.2021 05:10