Option B.
Current atomic models show the positive charged particles (protons) concentrated in the center (nucleus) of the atom, along with the neutrons, and the negative charged particles (electrons) distributed around (far from) the nucleus.
Answer:
Molecular weight of the compound = 372.13 g/mol
Explanation:
Depression in freezing point is related with molality of the solution as:
Where,
= Depression in freezing point
= Molal depression constant
m = Molality
m = 0.26
Molality =
Mass of solvent (toluene) = 15.0 g = 0.015 kg
Moles of compound = 0.015 × 0.26 = 0.00389 mol
Mass of the compound = 1.450 g
Molecular weight =
POH = -log[OH-] and pH + pOH = 14
So, all you have to do is take the negative log of 2.3*10^-5 and then subtract that number from 14 to find the pH
The answer is B. F=ma, so plug that into the equation (10.8=0.6a) and then solve algebraically, resulting in 18.