Can someone please help me? i will give brainliest

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

What is the atomic number of an atom that has 6 protons

(04.05 hc) analyze the given diagram of the carbon cycle below. part 1: which compound does c represent? part 2: name a process that could release this compound into the air. part 3: explain how the elements that form it are conserved during the carbon cycle. use complete sentences to explain your answer. justify how this compound was created from a recycling of carbon in the carbon cycle. use complete sentences to explain your answer.