i need help po sa science for 50pts. nonesense answers = report
1.Calculate the energy needed to raise the temperature of a 5 g of water from 5 degree Celsius to 15 degree Celsius .The water has 6.25 J/g degree Celsius specific heat capacity.
2.A 600 gram cube of lead is heated from 35˚C to 75 ˚C. How much energy was required to heat the lead? The specific heat capacity of lead is 0.129 J/g˚C
3.How much heat is needed to raise the temperature of 0.50 kg of water from 15˚C to 80 ˚C the capacity heat is 4180 J/kg˚C
1.Calculate the energy needed to raise the temperature of a 5 g of water from 5 degree Celsius to 15 degree Celsius .The water has 6.25 J/g degree Celsius specific heat capacity.
2.A 600 gram cube of lead is heated from 35˚C to 75 ˚C. How much energy was required to heat the lead? The specific heat capacity of lead is 0.129 J/g˚C
3.How much heat is needed to raise the temperature of 0.50 kg of water from 15˚C to 80 ˚C the capacity heat is 4180 J/kg˚C
Add an Answer
More Questions From This User See All
Answers & Comments
Answer:
1. Q = mc(t2-t1)
= (5 g)(6.25 J/gC)(15C-5C)
Q = 312.5 Joules
2. Q = mc(t2-t1)
=(600 g)(0.129 J/g˚C)(75C-35C)
Q = 3096 Joules
3. Q = mc(t2-t1)
=(0.50 g)(4.180 J/g˚C)(80C-15C)
Q = 135.85 Joules
2.How much resistance allows 6 V battery to produce a current of 0.006A?
3.What is the voltage across 100 ohms circuit element that draws a current of 1A?