URGENT!!! A sample of platinum was heated from 31.0°C to 51.0°C, and it took 62.2 calories of heat to do so. What was the mass of the piece of platinum?

Citric acid has a ph between 1 and 3.  it is considered to be aa. weak acidb. weak basec. strong based. strong acid

(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.

Maya wrote if you step to describe how carbon circulates between the atmosphere and living organisms