Amixture of propane and butane is burned with air. partial analysis of the stack gas produces the following dry-basis volume percentages: 0.0810% c3h8, 0.1140% c4h10, 1.049% co, and 9.905% co2. the stack gas is at an absolute pressure of 780.0 mm hg and the dew point of the gas is 50.71°c. calculate the molar composition of the fuel. (note: carry five significant figures throughout the calculation.)

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

Name the intersection of plane bpq and plane cpq.

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.