Ascientist is studying a previously unknown chemical reaction. she concludes that it is exothermic. what must the scientist have observed?
the reaction released heat.
the reaction formed a gas.
the reaction sped up when a catalyst was added.
the reaction caused the container to get cold.
Answers: 2
Chemistry, 21.06.2019 21:00
Write two balanced equations 1. dissolving of solid sodium hydroxide in water 2. the reaction of sodium hydroxide solution with hydrochloric acid
Answers: 1
Chemistry, 22.06.2019 00:30
What does x represent in the formula for the compound xcl4?
Answers: 1
Chemistry, 22.06.2019 10:50
How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.
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
Ascientist is studying a previously unknown chemical reaction. she concludes that it is exothermic....
Computers and Technology, 02.11.2019 23:31
Biology, 02.11.2019 23:31
Mathematics, 02.11.2019 23:31
Mathematics, 02.11.2019 23:31
Arts, 02.11.2019 23:31
Mathematics, 02.11.2019 23:31
Physics, 02.11.2019 23:31
Mathematics, 02.11.2019 23:31
Computers and Technology, 02.11.2019 23:31
Biology, 02.11.2019 23:31