1. The right atrium 2. veins 3. lungs 4. heart valves. 5. pulmonary artery 6. Lungs 7. pulmonic valves 8. left atrium.
Circulation is the process by which your heart continuously pumps around five liters (eight pints) of blood throughout our body. our cardiovascular system is made up of our heart, blood, and blood arteries (or heart and circulatory system). Because the majority of the oxygen has been used up by the body and brain, the right side of the heart receives blood that is deficient in oxygen. our lungs then take in a new supply of oxygen as a result of this being pumped to them. In order to be pumped back out to the brain and the rest of our body, the blood then travels back to the left side of the heart.
Learn more about blood here-
brainly.com/question/17030548
#SPJ9
The answer is (4). The crystal structure of diamond is a strong network of atoms. And structure of graphite is organized in layers. Due to the different crystal structure, they have the different properties.
So the equation is,
2Cl2(g) + 7O2(g) + 130kcal -> 2Cl2O7(g)
from this , ΔH°rxn=
is mentioned because it is for per mole of reaction. So for 4. moles of the product 
we need 4/2 moles of reaction to be used to calculate associated enthalphy change for the reaction.
Therefore
