The half-life of sodium-25 is 1.0 minute.
Starting with 1 kg of this isotope, how
much...
Chemistry, 13.11.2021 14:00 roxyfranciscus
The half-life of sodium-25 is 1.0 minute.
Starting with 1 kg of this isotope, how
much will remain after half an hour?
Answers: 2
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According to le chatelier’s principle, a system in chemical equilibrium responds to stress by shifting the equilibrium in a direction that reduces the stress. normalizes the stress. increases the stress. changes the stress.
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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]
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Write balanced nuclear equations for the formation of five elements whose atomic number is between helium (2) and iron (26):
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