Answer:
D
Explanation:
Whatever question mark is, it will have to have a 1 taken away from the atomic number of Br.
The atomic mass of the electron doesn't change anything, so whatever ? is, it has a mass of 85.
Since ? is 85 / 34 Se, the answer much be D
Answer:
a= 2 m/s^2
Explanation:
take to the right as positive
let Ftot be the total forces acting on the box , m be the mass of the box and a be the acceleration of the box.
Ftot = 10 - 2 = 8 N
and,
Ftot = ma
a = Ftot/m
= 8/4
= 2 m/s^2
therefore, the acceleration of the box is of magnitude of 2 m/s^2.
The standard gibbs free energy of formation of <u>i2 (s)</u> is zero.
<h3 /><h3>Definition of gibbs free energy</h3>
The maximum amount of work that can be accomplished by a thermodynamically closed system at constant temperature and pressure can be calculated using the Gibbs free energy, a thermodynamic potential. Furthermore, it offers a prerequisite for any processes, like chemical reactions, that might take place in such circumstances.
The Gibbs free energy change (measured in joules in SI) is the maximum non-expansion work that can be extracted from a closed system (one that can exchange heat & work with its surroundings but not matter) at fixed temperature & pressure. Only a completely reversible mechanism is able to reach this maximum.
Learn more about gibbs free energy
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Answer:
−1.9 × 10−5 Wb
Explanation:
Magnetic flux is the product of average magnetic field times the perpendicular area that is crosses times the angle between planar area and magnetic flux
Finding the area
Area = πr² = 3.14*0.075*0.075
Area=0.01767 m²
Magnetic flux = 0.01767*0.00110*cos 0
Magnetic flux =0.000019 = −1.9 × 10−5 Wb