B. Scientific claims can be verified through observation and experimentation, while pseudoscientific claims cannot. At least I think it is right.
Answer:
It would change the charge of the atom.
Explanation:
Added electrons cause atoms to be negatively charged, lost electrons cause atoms to be positively charged.
In the context of multivalent ions, it is when it has multiple oxidative states.
Answer:

Explanation:
The volume and amount of gas are constant, so we can use Gay-Lussac’s Law:
At constant volume, the pressure exerted by a gas is directly proportional to its temperature.

Data:
p₁ =5.7 atm; T₁ = 100.0 °C
p₂ = ?; T₂ = 20.0 °C
Calculations:
1. Convert the temperatures to kelvins
T₁ = (100.0 + 273.15) K = 373.15
T₂ = (20.0 + 273.15) K = 293.15
2. Calculate the new pressure

Answer:
HCl + Ca(OH)2 = CaCl2 + H2O - Chemical Equation Balancer.