a hospital purchases 128 grams of radioactive isotope that has a half life of 5 days how many grams will remain after 25 days

An alkaline battery produces electrical energy according to the following equation. zn(s) + 2 mno2(s) + h2o(l) zn(oh)2(s) + mn2o3(s) (a) determine the limiting reactant if 17.5 g zn and 31.0 g mno2 are used. (type your answer using the format ch4 for ch4.) (b) determine the mass of zn(oh)2 produced. _ g

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal

How many oxygen atoms are there in 3.15 moles of hcl manganese (iv) oxide, mno2