PLEASE HELP!!! An overly enthusiastic chemistry student burns 91.00 g of propane (C3H8; 36.03 g C for each 8.07 g H) and states that 295 g of CO2 (12.01 g C for each 32.00 g O) was produced. What is the mass of carbon in 91.00 g of propane?

2points why do scientists need governmental funding? o a. government politicians ask all the important scientific questions. o b. scientists have to pay taxes to the government on the money they make. o c. the cost of doing scientific research can be very high. o d. the government is controlled by scientists. submit

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

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