The specific heat of substance A is greater than that for substance B. If both sample sizes are the same and they both start at the same temperature and equal amounts of heat are added to both these substances, the one reaching the HIGHER temperature, assuming no phase change occurs for either, will be
substance A.
could be substance A or B.
no difference in the final temperatures.
substance B.
&
Water is stored in a dam. When the sluice gates are opened, water rushes out and drives a turbine to produce electricity. How is the energy changing form in the process?
Also if you aren't gonna help me then please dont respond!!!
2006-12-14 07:14:53 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
#1=B
#2 I believe that its going from mechanical energy to electrical energy.
2006-12-14 07:32:22 · answer #1 · answered by Lurch "You rang" 2 · 0⤊ 0⤋
Substance B will reach the higher temp because of its LOWER specific heat, assuming by "sample sizes" meaning SAME MASS. If you heat a pound of air and a pound of water by the same amount, the AIR will be HOTTER. The water has the ability to absorb more energy per unit degree change, hence water's HIGHER specific heat in cal/degree.
The dam has water with POTENTIAL energy, which when released changes to MECHANICAL energy in the turbine in turn converted to ELECTRICAL energy by the moving electric and magnetic fields in the windings of the generator.
2006-12-14 07:29:53 · answer #2 · answered by DellXPSBuyer 5 · 1⤊ 0⤋
Answer to number 1 is substance B will reach the higher temperature because it takes less heat to raise it 1 degree celcius than that of A.
The secod question, i think, needs more information.
2006-12-14 07:19:01 · answer #3 · answered by msvietpig 3 · 0⤊ 0⤋
1:substance B will reach the higher temperature sorry about the second question i have no idea
2006-12-14 08:17:48 · answer #4 · answered by star 1 · 0⤊ 0⤋
a million. The type of moles of KNO3 is = m/M and it really is 7.07/100 and one=0.07. and then, you've the formula for the molar concentration: C=n/V, the position n=nr. of moles. although the quantity must be in Litres. So, remodel 70 mLs = 0.07 Litres. the end result's 0.07/0.07 = 1M. So C.) is the finest ideal answer. 2. note that from 3 moles of NO2 consequences 2 moles of HNO3. Then, ... for 0.06 moles of NO2 ...................x moles of HNO3. So, x = 0.06 x 2 / 3 = 0.04 . ultimately, D is the right answer. desire it helped you.
2016-10-18 07:19:59 · answer #5 · answered by ? 4 · 0⤊ 0⤋