What is the maximum number of covalent bonds an element with atomic number 8 can make with hydrogen?

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?

Which description best characterizes the motion of particles in a solid?

How many atoms are in 2 moles of phosphorus?