No, more than 1 paratical
EM is created by moving charges back and forth will produce oscillating electric and magnetic fields, and these travel at the speed of light
Answer:
d. changing temperature
Explanation:
The thermodynamic equilibrium constant K is defined as a quantity characterizing the equilibrium of a chemical reaction. For a reaction where concentrations are in equilibrium:
aA + bB ⇄ cC + dD
The equilibrium constant is:
![k = \frac{[C]^c[D]^d}{[A]^a[B]^b}](https://tex.z-dn.net/?f=k%20%3D%20%5Cfrac%7B%5BC%5D%5Ec%5BD%5D%5Ed%7D%7B%5BA%5D%5Ea%5BB%5D%5Eb%7D)
Thus, the equilibrium constant will change if:
a. Varying the initial concentration of reactants
. FALSE. The k constant doesn't depend of initial concentrations but concentration in equilibrium does.
b. Adding other substances that do not react with any of thespecies involved in the equilibrium
. FALSE. The equilibrium constant just depends of substances that are involved in the equilibrium
c. Varying the initial concentration of products
. FALSE. Again, equilibrium constant doesn't depend of initial concentrations.
d. Changing temperature
. <em>TRUE. </em>As a thermodynamic constant, k depends of temperature thus:

e. Changing the volume of the reaction vessel. FALSE. The changing in the volume of the reaction vessel will change just the initial concentrations of the reactants.
I hope it helps!
70.0 g. The decomposition of 125 g CaCO3 produces 700 g CaO.
MM = 100.09 56.08
CaCO3 → CaO + CO2
Mass 125 g
a) Moles of CaCO3 = 125 g CaCO3 x (1 mol CaCO3/100.09 g CaCO3)
= 1.249 mol CaCO3
b) Moles of CaO = 1.249 mol CaCO3 x (1 mol CaO/1 mol CaCO3)
= 1.249 mol CaO
c) Mass of CaO = 1.249 mol CaO x (56.08 g CaO/1 mol CaO) = 70.0 g
Answer: D. A neutron has no charge
Explanation: Neutrons are subatomic particles found inside the nucleus of an atom. This particle is neutral and has no charge at all. That is the reason why the nucleus is positively charge since only the protons exhibits a charge and the neutrons carries no charge.