Answer:
Mass of the sample = m = 894.0 g
Initial temperature of the sample = T_i=-5.8^oC=267.35 KT
i
=−5.8
o
C=267.35K
Final temperature of the sample = T_f=17.5^oC=290.65 KT
f
=17.5
o
C=290.65K
Change in temperature = \Delta T=(T_f-T_i)ΔT=(T
f
−T
i
)
Specific heat capacity of the substance = c
Heat required to raise the temperature of a 894.0g sample = Q
Q = 4.90kJ = 4900 J
Q=m\times c\times \Delta T=m\times c\times (T_f-T_i)Q=m×c×ΔT=m×c×(T
f
−T
i
)
4900 J=894.0 g\times c\times (290.65 K-267.35 K)4900J=894.0g×c×(290.65K−267.35K)
c=0.23523 J/g K\approx 0.235 J/g Kc=0.23523J/gK≈0.235J/gK
The chemist will report the specific heat capacity of the substance as 0.235 J/g K.
Answer:
21.4 M
Explanation:
7.5 mole / ( 350/1000) = 21.4 M
Answer:
The shielding effect arises from superposition of the field from the outside charge distribution and the opposing charge distribution that was induced on the copper strips. This induced charge distribution, or "back-field," can be "frozen in place" by removing the wire interconnecting the strips.
Explanation:
Answer:
the answer is elastic potential energy to kinetic energy
Explanation:
A stretched rubber band contains potential energy (specifically called elastic potential energy because the material involved is elastic), which when released, the rubber band tries to return back to it's original shape and size. During the process of this return, the elastic potential energy is immediately converted to kinetic energy.
NOTE: Potential energy can be defined as the energy stored/present in a body at rest. It is usually as a result of the body's position or state. The potential energy stored in an elastic material is called elastic potential energy.
Kinetic energy can simply be described as the energy present in an object that is in motion.
One major process that is similar to the processes above is the <u>mechanical energy</u>, which is the energy involved in an object that has the ability to do work which in this case is a drawn elastic rubber that has the ability to "return" to it's initial state.
Answer:
Substance K is hydrochloric acid and the process is neutralisation
Step-by-step explanation:
When you react hydrochloric acid and sodium carbonate, you produce sodium chloride, carbon dioxide and water