Identify at least one example each of absorption, transmission, reflection and refraction of waves in this photograph

What’s the percent by mass of carbon in c10h14n2

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 5.35 mol fe and 7.65 mol nio(oh) react?

Are oil and water a mixture or solution