A sample of lead has a mass of 69.00 kg and a density of 1.130 104 kg/m3 at 0°C. (Assume the average linear expansion coefficient for lead is 2.900 10-5(°C−1).)
(a) What is the density of lead at 80.00°C? (Give your answer to four significant figures.)
(b) What is the mass of the sample of lead at 80.00°C?
hahaha
i don't know
under kay sir saboco ka ay? cheater!!
To find the density of lead at 80.00°C and the mass of the sample at that temperature, we can use the following formulas:
(a) Density at a specific temperature = Density at reference temperature * (1 + Linear expansion coefficient * (Temperature - Reference temperature))
(b) Mass at a specific temperature = Density at that temperature * Volume
Let's solve these step by step:
(a) Density at 80.00°C:
We are given the density of lead at 0°C, which is 1.130 * 10^4 kg/m^3. The linear expansion coefficient for lead is 2.900 * 10^-5 (°C^-1). The reference temperature is 0°C.
Using the formula, we can calculate the density at 80.00°C:
Density at 80.00°C = 1.130 * 10^4 kg/m^3 * (1 + 2.900 * 10^-5 (°C^-1) * (80.00°C - 0°C))
Calculating the density at 80.00°C will give us the answer to part (a) of the question.
(b) Mass at 80.00°C:
To calculate the mass at a specific temperature, we need to know the volume of the sample. However, the volume is not provided in the question. Without the volume, we won't be able to calculate the mass at 80.00°C.