_________ is designed to protect you from injuries to your head, face, eyes, ears, hands, feet, respiratory tract, and body
the answer to this question, is B personal protective equipment
hope this helps :D
Answer:
the l sign means the substance in the chemical equation is a liquid. (hope this helped : D )
Atoms 'like' to have 8 valence electrones. sodium has one electron 'in excess' and chlorine 'lacks' in one. so they just exchange :) both are happy. then the ionic bond is formed because chlorine is now charged negative (additional electron) and sodium is charged positive (gave up one electrone) - the opposite charges cause electrostatic pull. many atoms, many bonds and thats how salt is built.
<span>Scientific conclusions are based on scientific evidence</span>
When the Ka value for CH3NH2 = 2.27 x 10 ^-11
and when we have the Ka value so, we can get Pka from this formula:
Pka = -㏒Ka
∴Pka = -㏒ (2.27 x10^-11)
= 10.6
now, to get the base/acid ratio by using Henderson-Hasselblach equation:
PH = Pka + ㏒[base/acid]
so by substitution:
10.22 = 10.6 + ㏒[base/acid]
∴[base/acid] = 0.417
∴[CH3NH2/CH3NH3Cl] = 0.417