HELP PLEASE HERE IS THE QUESTION The shape of an apple is a CHEMICAL OR A PHYSICAL CHANGE OR CHEMICAL OR A PHYSICAL PROPITRY.

What are the resulting coefficients when you balance the chemical equation for the combustion of ethane, c2h6? in this reaction, ethane is burned in the presence of oxygen (o2) to form carbon dioxide (co2) and water (h2o). (g)+(g)→(g)+(g)

0.2348 grams of pbcl2 used to form 44.0 ml of solution.

If blood contains 150g of hemoglobin per liter of blood, how much hemoglobin would be contained in 10 ml of blood