They are the only arteries that lead blood away from the heart, dragging the de-oxygenated blood with it.
Answer:
Tha answer I s D. Hope it will work to u
Answer:
The total number of molecules remains the same
The balanced equation for the combustion of methane is:
CH4 + 2O2 --> CO2 + 2H2O
Therefore for every mole of CH4 burned, one mole of CO2 is produced. We can use the mass of CO2 and its relative molecular mass to calculate the moles of CO2 produced. The rmm of CO2 is 44.0 g/mol, therefore the numbers of moles of CO2 = 11/ 44.0 = 0.25 moles. Therefore 0.25 moles of CH4 were burned, which has a rmm of 16.0 g/mol, therefore the mass of CH4 burned was 0.25 * 16.0 = 4.0 g
By calculating the negative of the slope of the curve of concentration of a reactant versus time at time t.
by calculating the slope of the curve of concentration of a product versus time at time t.