300c
The heater and AC knobs on a 1971 250c Mercedes work by turning in a clockwise or counterclockwise manner.
Underneath your cauldron are three buttons: the blue one turns the gas off, the middle one turns it on a low heat and the furthest away one turns it to a high heat.To heat to 250c, press the high heat button. A small thermometer will appear showing you what temperature you have to keep the cauldron at. Once you reach that area, use the low and no heat buttons to keep the temperature for the required amount of time.
The ionization constant of water at 250C, its value is 1x10-14 A: ion-product constant of water.
1.0
According to quite a few internet sources, Thulium's melting point is 15450C. Room temperature is 250C. Therefore, it will be a solid at RT.
about one minute I put the cheese on bread. It takes about one minute to toast it in an oven.
$150, depending on condition
The Lowrance Iway 250C is actually no longer made anywhere. Also, because it is no longer being produced, finding what country produced it is becoming increasingly difficult. If you own one, check on the back of it to find where it was made.
10-100 USD or so
Depending on condition, $100-$150
Rechargeable battery MP3 player JPEG Picture viewer SD/MMC memory card 320Hx240V resolution Visual Nav. with automatic zooming http://www.lowrance.com/Products/Legacy-Products/Automotive/iWAY-250C/