subject
Chemistry, 04.12.2020 01:00 gizmo50245

What is the mass percentage of silicon?

ansver
Answers: 1

Another question on Chemistry

question
Chemistry, 21.06.2019 21:10
When the volume and number of particles of a gas are constant which of the following is also constant
Answers: 3
question
Chemistry, 22.06.2019 00:00
Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.
Answers: 1
question
Chemistry, 22.06.2019 10:30
Which characteristics can be used to differentiate star systems? check all that apply.
Answers: 2
question
Chemistry, 22.06.2019 18:00
Answer asap need it by wednesday morning carry out the following calculations on ph and ka of from data. i. calculate the ph of 0.02m hcl ii. calculate the ph of 0.036m naoh iii. calculate the ph of 0.36m ca(oh)2 iv. calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 v. calculate ka for weak acid ha which has a ph of 3.65 at 0.30m concentration vi. calculate the ka of a solution made by mixing 15.0 cm3 0.2m ha and 60.0 cm3 0.31m a-. [ph= 3.80] vii. calculate the ph of a solution made by mixing 15.0 cm3 0.1m naoh and 35.0 cm3 0.2m hcooh. [ka = 1.82 x 10-4 m]
Answers: 1
You know the right answer?
What is the mass percentage of silicon?...
Questions
question
Arts, 01.03.2021 21:00
question
History, 01.03.2021 21:00
question
Mathematics, 01.03.2021 21:00
question
Chemistry, 01.03.2021 21:00
question
Mathematics, 01.03.2021 21:00
Questions on the website: 13722363