Who devolved the chocolate chip cookie model of the atom

This was the basis of the atomic theory devised by English physicist J.J. Thompson in the late 19th an early 20th centuries. As part of the revolution that was taking place at the time, Thompson proposed a model of the atom that consisted of more than one fundamental unit.

Explanation:

64 °C

Explanation:

I’m guessing that “they” are asking you to interpret a solubility curve something like the one below.

Find the point at 300 g/100 mL water on the vertical axis.

From there, draw a horizontal line until it meets the solubility curve of sugar.

Then, drop a vertical line to the temperature axis.

It appears to hit the axis at about 64 °C.

The solution is saturated at this temperature, so 64 °C is the lowest temperature at which you can dissolve 300 g of sugar in 100 mL of water.