A substance was analysed and was found to have a boiling point of 450 °C. At room temperature it is a soft grey solid.
Which temperature could be the melting point of a pure sample of the substance?
A -12 °C
B 56 °C to 72 °C
c 250 °C to 275 °C
D 142 °C

The first element on the periodic table of elements is carbon. a. true b. false

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=

The nuclear fission process releases neutrons and question 27 options: alpha particles electrons energy beta particles