¿Cuántos litros de anticongelante etilenglicol [CH2 (OH) CH2 (OH)] se deben agregar al radiador de un automóvil que contiene 6.50 litros de agua, si la temperatura invernal más baja en la región es de -20 0C? Calcule el punto de ebullición de esta mezcla (la densidad del etilenglicol es de 1.11 g/ml),

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.

Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness

State one important difference between a physical change and a chemical change?