The primary role of the flux in brazing or soldering is to: Group of answer choices a. Remove oxides and other impurities (i. e. clean the base metal surfaces) b. Reduce the melting temperature of the material being joined c. Reduce the melting temperature of the filler metal

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa

[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