Answer:
Option (A) : Positive
Explanation:
A combustion reaction will always be associated with a change in entropy that is Positive due to the gaseous products released. Hence, there is a large positive entropy change.
How many iron atoms are present in a piece of iron weighing 95.8 g? , shows that its molecules contain one S atom and two O atoms; calculate its molar mass. molecules, which consist of 6.02 x 1023 S atoms and 2(6.02 x 1023) O atoms. S): Concept 4.
Answer:
see below
Explanation:
Swap cations and anions
K2NO3 is not balanced, it is either 2KNO3 or KNO3 and only 2KNO3 works in this case
FeCl2 (aq)+KNO3 (aq) → Fe(NO3)2 (aq) + 2KCL (aq)
answer
1.1 Carbon is the sixth element in the periodic table.
(IV A)
1.2 electric configuration: O⁸ (He²) 2s² 2p⁴ .
atomic number: 8
1.3 protons= 8 , electron = 7
1.4 oxygen has 6 valence electrons .
carbon has 4 valence electrons.
1.5 the answer is in the photo.
Answer:
The energy stored in the spring when the bike goes over a bump is 
joules.
Explanation:
Let suppose that spring has a linear behavious, by means of Hooke's Law, definition of Work and Work-Energy Theorem we find that the potential energy stored in the spring (
), measured in joules, is defined by:
(1)
Where:
- Spring constant, measured in newtons per meter.
- Deformation, measured in meters.
If we know that 
and 
, the energy stored by the spring due to compression is:
The energy stored in the spring when the bike goes over a bump is joules.
