Dan states that a certain layer of the sun is like the brightest street lamp in a city. which layer of the sun is dan referring to? chromosphere convective zone photosphere radiative zone

An alcohol thermometer makes use of alcohol's changing in order to measure temperature. as the temperature goes up, the alcohol contained in the thermometer increases in volume, filling more of the thermometer's tube.

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.

Calculate the temperature rise when 0.2g of propane is used to heat 400cm cubed of water.