Metals on the left side, metalloids on the staircase, nonmetals on right side
Answer:
2.17
Explanation:
To calculate pH using the hygrogen ion concentration we must use the following formula:
- log (H+) = pH
All we have to do now is plug in our hygrogen ion concentration and put it in our calculator.
- log (6.8 × 10⁻³) = 2.17
Don't forget proper figures for pH!
Answer:
The reagents are 
.
Explanation:
1-Methylenecyclopentene is treated with HBr form 1-bromo-1-methylcyclopentane, which is treated with strong base ethoxide ion and forms 1-methylcyclopent-1-ene.
This alkene is treated with osmium tetraoxide in the presence of sodium bisulfite to form target product.
The chemical reaction is as follows.
Answer:
every method of removing heat from LED's should be considered. Conduction, convection, and radiation are the three means of heat transfer. Typically, LED's are encapsulated in a transparent resin, which is a poor thermal conductor. Nearly all heat produced is conducted through the back side of the chip. Heat is generated from the PN junction by electrical energy that was not converted to useful light, and conducted to outside ambiance through a long path, from junction to solder point, solder point to board, and board to the heat sink and then to the atmosphere. A typical LED side view and its thermal model are shown in the figures.
Explanation:
Cause of imagination
저 하늘의 오렌지빛 마법이 끝이 나기 전에
'Cause of imagination 그 찰나에
Can you feel the rush? Can you feel the rush?
시간아 멈춰줘
I wanna stay, hey (Can you feel the rush? Can you feel the rush?)
두 세계의 경계선 그 틈에 너와 나를 남기고파 (Come on, let's do it)
I wanna stay, hey (Can you feel the rush? Can you feel the rush?)
개와 늑대의 그 시간엔 마법 속에 갇히고파 (Blue hour!)
