Blue light in the visible spectrum has a frequency of approximately 630 THerz (I THerz = 102 cycles/sec). What is the wavelength of this light?

Will give brainliest it is a lab from k12 here is the linkfor each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. type your answer here. (score for question 3: of 5 points) were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. type your answer here. (score for question 4: of 5 points) make a general statement about the reactivity of the metals in this experiment. type your answer here.

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false