PLEASEE HELP! THANKS A prelimary investigation reveals that an unknown material

Question

PLEASEE HELP! THANKS

A prelimary investigation reveals that an unknown material has a melting range around 100 °C. The heating curves for a melting point apparatus are shown below. Use the curves to determine what voltage would be required to produce a temperature change of 2 °C/min close to the needed melting point.

A prelimary investigation reveals that an unknown material has a melting range around 100 °C. The heating curves for a melting point apparatus are shown below. Use the curves to determine what voltage would be required to produce a temperature change of 2 C/min close to the needed melting point. 450 450 400 400 OV 357 350 350 314 300 300 271 250 2 250 228° & 200 200 184 60/min 150 150 0V 141 100 100 101 78 50 50 0 5 10 15 20 25 30 35 20 30 40 50 60 70 80 90 100 Time (min) Volts must the melting point apparatus be run at in order to produce a 2 C/min change near 100 C? Enter the votage to the nearest 5 volts Number Volts

Explanation / Answer

From graph Temperature vs volts,

There are 4 lines out of which, 2 nd line represent 2 °C/min,

So now draw a line horizontally from 100 °C to this line then u can observe that it touches the z-axis at voltage 34 Volts.

Thus. The correct answer is 34 V

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.