Trong dung môi là nước, aniline hấp thu bước sóng 280nm với ε = 1430 l. mol-1.cm-1. Nếu muốn pha chế
100mL dung dịch aniline có độ truyền suốt 30% đối
với bức xạ trên thì phải cân bao nhiêu gam aniline
(C6H5NH2
) nguyên chất, (dùng cuvet đo có l = 1cm).

How manyatoms of mercury are in 1.4214e+1 ml sample

3.) for each of the following compounds, draw the major organic product of reaction with hcl or naoh and circle whether the starting materials and products will be more soluble in organic solvent or water benzoic acid + hcl: benzoic acid + naoh: oh benzoic acid water/organic water organic fluorenone hс: fluorenone + naoh: fluorenone water/organic water/organic веnzocaine + hci: benzocaine + n»oh: h2n benzocaine water/organic water organic o=

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have