Chemistry, 19.11.2021 22:50 carolin7493
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1. El helio es un gas valioso utilizado en la industria, en investigaciones en las que se requiere baja
temperatura, en los tanques para buceo profundo y para inflar globos. ¿Cuántas moléculas de
sustancia de helio hay en 6,46 g de este gas?
2-. Calcula el número de átomos en 0,551 g de potasio.(MA K=39 g/mol)
3- Calcula la cantidad de moles de cloroformo(CHCI) en 198 g de cloroformo.
Datos (MA g/mol → C=12 , Cl=35,5).
4-¿Cuántos mol de átomos hay en 6 millones de átomos de este metal?
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Chemistry, 22.06.2019 02:00
In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al
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Chemistry, 22.06.2019 12:00
What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?
Answers: 1
Chemistry, 22.06.2019 18:00
How does climate change cause the ocean's thermohaline current to slow down?
Answers: 3
Chemistry, 22.06.2019 18:10
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
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1. El helio es un gas valioso utilizado en la industria, en investigaciones en la...
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