Faça o balanceamento (acerte os esquemas químicos que se seguem, de modo a obedecerem à Lei de Lavoisier): a)Mg(s) + O2(g) → MgO (s) b) H2(g) + O2(g) → H2O (ℓ) c) N2(g) + H2(g) → NH3(g) d) SO2(g) + O2(g) → SO3(g e) Li (s) + O2(g)→ Li2O (s) f)Cℓ2(g) + HBr(g) → HCℓ (g) + Br2(g) g) Fe2O3(s) + Aℓ (s) → Aℓ2O3(s) + Fe (s) h) Zn (s) + HCℓ (aq) → ZnCℓ2(aq) + H2(g

Sylvanite is a mineral that contains 28.0% gold by mass. how much sylvanite would you need to dig up to obtain 77.0 g of gold? explain how you got your answer and the steps you took. you

In apex! a liquid heated beyond a certain temperature becomes

You exhale co2 which is produced during cellular respiration.  co2 combines with the water in your blood's plasma to make up one half of the body's most important buffer pair, carbonic acid.  the more physical activity you engage in, the more co2 your body is producing.  you can see this by putting some of the cabbage indicator in a glass and then blowing bubbles into it through a straw.  can you see a change in the color of the indicator?