Answer:
All of them are examples of potential energy.
Explanation:
All of the following are examples of potential energy EXCEPT Imbalance in electrical charges of molecules across a cell membrane. O Both: chemical bond (C-H) in fatty acids AND concentration gradient. O Chemical bond (C-H) in fatty acids. O Concentration gradient. O All of them are examples of potential energy.
Answer:
C. Concave Mirror
Explanation: A concave mirror is used to bring a light together to focus on an object, concave mirrors collects parallel rays and forms an image
Answer:
H1 = 63.3 kJ
Explanation:
Given:
ΔL = 2.256 kJ/g
Cp = 4190J/kg⋅K
Steam at 100°C in contact with your skin, condenses to water at 100°C. Therefore,
Q = M × ΔL
= (25.0 g)(2.256 kJ/g)
= 56.4 kJ
This condensed water at 100°C is then cooled to 34°C. The heat involved with this temperature change is;
Q = m × Cp × ΔT
= (25 × 1kg/1000g × 4190 × (100°C - 34°C)
= 6913.5 J
= 6.914 kJ
The total heat H1,
= (56.4 kJ) + (6.9135 kJ)
= 63.3 kJ.
The spin quantum number (ms) describes the orientation of the spin of the electron: TRUE
The magnetic quantum number (ml) describes the size and energy associated with an orbital. An orbital is the path that an electron follows during its movement in an atom: FALSE
The angular momentum quantum number (l) describes the orientation of the orbital: FALSE
The principal quantum number (n) describes the shape of an orbital: FALSE
<u>Explanation:</u>
- The magnetic quantum number (ml) - The number of orbitals and the orientation within a subshell is determined.
- The orbital angular momentum quantum number (l) - The shape of an orbital is determined.
- The principal quantum number (n) - The energy of an electron and the distance of the electron from the nucleus is described.
Speed at 20°C = 343m/s
time taken= 60s
distance = speed × time
= 343 × 60
= 20,580m
