Carbon is burned with dry air. The volumetric analysis of the products is 10.06%, CO2, 0.42% CO, 10.69% O2 and 78.83% N2.
1- The stoichiometric and actual air-fuel ratio;

2- The percentage of the theoretical air used.​

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule