Chemistry, 08.01.2021 21:10 lucyfox8165
Nitrogen (N) has an atomic number of 7 and an atomic mass of 14. Which of the following correctly shows the electron arrangement for nitrogen?
2, 7
2, 5
2, 2, 3
2, 8, 4
Answers: 2
Chemistry, 22.06.2019 01:30
The table lists pressure and volume values for a particular gas. which is the best estimate for the value of v at p = 7.0 × 103 pascals?
Answers: 3
Chemistry, 22.06.2019 10:00
Drug abuse will not lead to physical and psychological dependence. true or false ?
Answers: 2
Chemistry, 22.06.2019 15:20
Water is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place? from a gas to a liquid from a liquid to a gas from a solid to a liquid from a gas to a plasma
Answers: 1
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
Nitrogen (N) has an atomic number of 7 and an atomic mass of 14. Which of the following correctly sh...
Physics, 25.10.2021 19:40
Health, 25.10.2021 19:40
Chemistry, 25.10.2021 19:40
Mathematics, 25.10.2021 19:40
Arts, 25.10.2021 19:40
English, 25.10.2021 19:40
Mathematics, 25.10.2021 19:40
History, 25.10.2021 19:40
Mathematics, 25.10.2021 19:40
Social Studies, 25.10.2021 19:40
Mathematics, 25.10.2021 19:40
English, 25.10.2021 19:40
Chemistry, 25.10.2021 19:40
Mathematics, 25.10.2021 19:40