If there are 70 million tons of ore, and that gonna produce about 7 metric million tons of zinc metal over a country in 24 years.
sphalerite is a mineral that is the chief ore of zinc. it consists largely of zinc sulfide in crystalline form but almost always contains variable iron.
if cadmium (cd) content of four sphalerite samples at the country averaged about 110,000 ppm.
if cd can cause kidney damage to human, and the drinking water stander for cd in drinking water is under 0.005 (mg/l)2
answer the following questions:
a. what's the amount (in metric tons) of sphalerite gonna be mined to obtain that 6.96 metric million tons of zinc metal?
b. what's the amount (in metric tons) of refined cd metal were produced over the years at the country?
c. does the drinking water standard apply?
d. what's the max contaminant level allowed?

Many reactions take place in aqueous solution. when potential reactants are mixed, a reaction will occur if there is some driving force that favors the formation of products. it is often convenient to categorize reactions in terms of these driving forces: precipitate formation, in which an insoluble solid is formed, weak electrolyte formation, as in a neutralization reaction involving water, or transfer of electrons, as in a redox reaction. these reactions can be represented by full molecular equations, which contain all species in the reaction mixture, or by net ionic equations, which show only the species that actually undergo a change. the latter does not contain the spectator ions, which do not undergo a net change or do not take part in the reaction. part a when the following two solutions are mixed: k2co3(aq)+fe(no3)3(aq) the mixture contains the ions listed below. sort these species into spectator ions and ions that react. drag the appropriate items to their respective bins. view available hint(s) spectator ions ions that react part b what is the correct net ionic equation, including all coefficients, charges, and phases, for the following set of reactants? assume that the contribution of protons from h2so4 is near 100 %.ba(oh)2(aq)+h2so4(aq)→ express your answer as a chemical equation. view available hint(s) nothing provide feedback

Find the mass, in grams, of 5.00*10^23 molecules of f2

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.