A chemist prepares a solution of barium acetate (Ba(CH, CO*
by measuring out 60.3 umol of barium acetate into a 450 mL volumetric flask and filling the
flask to the mark with water.
Calculate the concentration in mmol/L of the chemist's barium acetate solution. Round your answer to 3 significant digits.

Select the correct answer from each drop-down menu.describe what happens to a carbon-11 atom when it undergoes positron emission.the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons

There is one girl i like and i don't know how to tell her that, i have a feeling she knows but if she doesn't i don't want to make a fool out of myself how is one way to boost my confidence on asking her out

Is 343 in the sequence -5, -2, 1, 4, 7