Chemistry, 05.10.2021 20:30, harry45sharma
The equation below shows the reaction between ammonia and Flourine. NH3 + 3F2 >>>>>3HF + NH3. Calculate the molar enthalpy change for the reaction above given that the enthalpy change of formation for NH3 = -46 HF = -268 NH3= -114.
Answers: 2
Chemistry, 21.06.2019 18:00, Falconpride4079
Construct the hypothetical phase diagram for metals a and b between room temperature (20c) and 700c, given the following information: * the melting temperature of metal a is 480c. • the maximum solubility of b in a is 4 wt% b, which occurs at 420c. • the solubility of b in a at room temperature is 0 wt% b. • one eutectic occurs at 420c and 18 wt% b–82 wt% a. • a second eutectic occurs at 475c and 42 wt% b–58 wt% a. • the intermetallic compound ab exists at a composition of 30 wt% b–70 wt% a, and melts congruently at 525c.• the melting temperature of metal b is 600c. • the maximum solubility of a in b is 13 wt% a, which occurs at 475c. • the solubility of a in b at room temperature is 3 wt% a.
Answers: 1
Chemistry, 22.06.2019 01:30, montoyaricardo3550
Aroller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car? a) 22,000 j b) 968,000 j c) 484,000 j d) 44,000 j
Answers: 2
The equation below shows the reaction between ammonia and Flourine. NH3 + 3F2 >>>>>3H...
Mathematics, 01.06.2020 04:57
History, 01.06.2020 04:57
Mathematics, 01.06.2020 04:57
History, 01.06.2020 04:57
History, 01.06.2020 04:57
Mathematics, 01.06.2020 04:57