<span>esearchers in many countries were seeking innovative and cost-effective ways to synthesize steroids, including cortisone and the sex hormones. German chemists discovered that the steroid stigmasterol, which Julian had obtained as a by-product of the physostigmine synthesis but was also obtainable from soybeans, could be used in the synthesis of certain sex hormones, including progesterone</span>
Answer: 0.67 moles
Explanation:
6 Li(s) + N2(g) ---> 2 Li3N(s)
The balanced reaction above shows that 6 moles of Lithium, (Li) added to 1 mole of Nitrogen gas, (N2) yields 2 moles of Lithium nitrite, (Li3N)
I.e 1 mole of N2 = 2 moles of Li3N
Since the number of N2 needed to make 1.34 moles of Li3N is unknown, it is represented by Y
So, 1 mole of N2 = 2 moles of Li3N
Y = 1.34 moles of Li3N
To get the value of Y, cross multiply
1.34 x 1 = Y x 2
1.34 = 2Y
To get the value of Y divide both sides by 2
1.34/2 = 2Y/2
0.67 = Y
Thus, 0.67 moles of N2 is needed to make 1.34 moles of Li3N.
2.5*102km to mm
2.5*102=255
255x1000000=255000000 mm
188dL to L
188/10=18.8 L
Answer:
4: Hydro electrical energy
5:Flase the law of conservation of energy is not violated by transformer.
Explanation:
4:Hydroelectric energy, also called hydroelectric power or hydroelectricity, is a form of energy that harnesses the power of water in motion—such as water flowing over a waterfall—to generate electricity. People have used this force for millennia.
5:Quantum Physics and Law of Conservation of Energy.
Niels Bohr, Hans Kramers, and John Slater proposed that these electrons violated the law of conservation of Energy momentarily. They stated that with each jump, energy is either created or destroyed by the electrons during the whole process.
The two are Celsius and Kelvin. the most used is Kelvin. the reason is that it is more precise measurement.