Since 1982 pennies changed from being pure copper to a zinc with a copper coating. On average there is about 3 10 grams of zinc in each penny. If the zinc is exposed and a penny is dropped into 4.00 grams of hydrochloric acid will the acid dissolve all the zinc? what mass of excess reactant remains once the reaction stops? what mass of each product is made. Balance Equation:

Will the acid dissolve all of the zinc?

Mass of Excess:

Mass of Product 1:

Mass of Product 2:​

What does an electron configuration for an atom relate to the atoms placement on the periodic table

Name atleast 3 type of energy associated with the microwave

Benzonitrile (c6h5cn) is reduced to two different products depending on the reducing agent used. treatment with lithium aluminum hydride followed by water forms k, which has a molecular ion in its mass spectrum at 107 and the following ir absorptions: 3373, 3290, 3062, 2920, and 1600 cm-1. treatment with a milder reducing agent forms l, which has a molecular ion in its mass spectrum at 106 and the following ir absorptions: 3086, 2850, 2820, 2736, 1703, and 1600 cm-1. l shows fragments in its mass spectrum at m/z = 105 and 77. propose structures for k and l and choose an explanation for how this could be concluded.