Westonci.ca is your trusted source for finding answers to a wide range of questions, backed by a knowledgeable community. Join our Q&A platform to connect with experts dedicated to providing precise answers to your questions in different areas. Explore comprehensive solutions to your questions from a wide range of professionals on our user-friendly platform.

Which of the following is a correctly balanced equation? A. 2Cu + O2 --> 2CuO B. Mg + O2 --> MgO2 C. 3kCl + HNO3 --> 3HCl + KNO3 D. CaCO3 --> CaO + CO3