Explain why 6.02x10^23 particles of NaCl has a mass of 58.44 grams

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?

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

How many atoms are there in 5.70 mol of mg