Alguien puede convertir la fórmula de CaCO3 a gramos con el proceso porfa

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

Is 9 correct? and can someone me with 10? it’s due tomorrow, you

Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.