Which conclusion was a direct result of the gold foil experiment?
(1) an atom is mostly empty...
Chemistry, 22.08.2019 09:30, angoliabirtio
Which conclusion was a direct result of the gold foil experiment?
(1) an atom is mostly empty space with a dense, positively charged nucleus.
(2) an atom is composed of at least three types of subatomic particles.
(3) an electron has a positive charge and is located inside the nucleus.
(4) an electron has properties of both waves and particles.
Answers: 1
Chemistry, 22.06.2019 05:20, barry14201
Identify and describe the three ways that mutations affect organisms.
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Chemistry, 22.06.2019 18:00, kingamir
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
Chemistry, 22.06.2019 20:30, trevorhenyan51
What is a difference between a mixture of elements and a mixture of compounds
Answers: 1
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