Which of the following is a physical change? adding an acid to milk to form sour cream adding enzymes to milk to form cheese adding bacteria to heated milk to form yogurt adding sugar to milk to form sweetened milk

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

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.

What is produced from neutralization of an acid and a base? a. hydronium ions b. citric acid c. salt and water