Chemistry, 08.09.2021 07:20 TelestoisaMoon4437

What is the mass of a sample of metal that is heated from 58.8°C to 88.9°C with a specific heat of 0.4494J/gºC, if Q = 4500.0J

Answers: 2

Show answers

Other questions on the subject: Chemistry

Chemistry, 21.06.2019 21:30, alexandroperez13

It takes 945.kj/mol to break a nitrogen-nitrogen triple bond. calculate the maximum wavelength of light for which a nitrogen-nitrogen triple bond could be broken by absorbing a single photon.

Answers: 3

continue

Chemistry, 21.06.2019 23:00, cbrewer37

Select the correct answer. given: 2libr + ba → babr2 + 2li in this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced? a. 1.18 mol b. 2.37 mol c. 4.73 mol d. 16.4 mol e. 32.9 mol

Answers: 2

continue

Chemistry, 22.06.2019 18:00, kyllow5644

Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.

Answers: 3

continue

Chemistry, 22.06.2019 18:10, pearfam98

Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)

Answers: 1

continue

You know the right answer?

What is the mass of a sample of metal that is heated from 58.8°C to 88.9°C with a specific heat of...