PLEASE HELP ME ! A group of students performed an experiment in which they dropped a cube of metal into a graduated cylinder of water. The initial temperature of the water was 25 'C. The mass of the water was 50 g
After energy in the form of heat was transferred to the water, its temperature was 35 C. Based on the evidence, how much energy was transferred between the metal and the water?
0.2 cal
10 cal
so call
• 500 cal

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

[ou.03jthe pictures below show the wavelengths and intensities of electromagnetic radiations emitted by three stars, star 1, star 2, and star 3. intensity intensity- intensity- 1000 3500 6000 8500 11000 wavelength (a) star 1 1000 3500 6000 8500 11000 1000 3500 6000 8500 11000 wavelength (a) wavelength (a) star 2 star 3 which of these statements is correct about the color of the three stars? star 2 is white in color o star 2 is yellow in color star 1 and star 3 are yellow in color star 1 and star 3 are white in color

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 3.75 mol fe and 8.70 mol nio(oh) react?