A substance increases in temperature by 255°c when a 983g sampleof it absorbs 8300j of heat. What is the specific heat capacity of the substance​

Achemist who studies water samples did a demonstration of how to test for lead in water. she added a clear solution of potassium iodide to a clear solution of lead nitrate. then a yellow swirling solid formed in the liquid. what is most likely true about the yellow solid?