Cho a g hhA (Na và Ca) vào y g H2O thì thu đc 6,72l khí (đktc) và ddB trg đó nồng độ M kiềm canxi. Tính x, y bt C% của Na là 8%

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. 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

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver

I’m an electrically neutral atomic any element, there are equal numbers of