4. Anthracite coal, 1.0 g, produces 7.000 x 103 cal when burned. How many joules of energy does this represent? How many grams of anthracite are required to raise the temperature of 4.0 L of
water from 20.0 °C to 100.0 °C?

The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. initial mass and yield sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide

In numbering carbon atoms in the parent chain of a hydrocarbon, why would you number from right to left, rather than left to right

Schrodinger and heisenberg developed an alternate theory about atomic nature that contradicted some of bohr's model of the atom. how do changes resulting from new technology and evidence affect the reputation of the atomic theory?