Which of the following molecules has a molecular dipole??a) H2Ob) CO2c) HC (triple bond) CHd) Cl2Which of the following molecules has a molecular dipole??a) CO2b) BF3c) NH3d) CH4Which of the following species has an atom that has an unfilled valence shell of electrons??a) molecular bromine, Brb) Fluride anion, F-c) ammonia, NH3d) Aluminum trichloride, AlCl3Which of the following is a polar covalent bond?a) Na-Clb) C-Clc) C-Hd) Cl-ClWhich of the following is a polar covalent bond?a) Na-Fb) C-Hc) C-Od) Cl-Cl
Personally I would go with a cold air intakeIt runs down to the bottom of the car and away from the warmth of the engineIt pulls the cold air from down closer to the ground where all the colder air is to produce better horsepower and throttle responseThe best way to protect it from sucking in cold air is to get a shield for itGood luck and hope this helps.
Solutions: 1.a) 2.c) 3d) 4b) 5c) Explanations: Q12In order to have a dipole moment the molecule has to be polarGeometry is also important as you draw polarity vectors if they dont cancel out then you have a dipoleSince water molecule has bent geometry and it is polar it has a dipole moment for sureNH3 is also polar and its geometry also causes dipole momentBF3 DOES NOT have a dipole because of its geometry which cancels the dipoles out to zerofaculty.ncc.edu/LinkClick.aspx?filetickettoazMa9qRFc%3Dtabid1875 Q3Look at the periodic tableYou can rule out b) because Flourine anion has 8 electrons so filled valenceRule out a) after drawing lewis dot structure of Br2 and counting electrons to see that each Br is satisfied with 8 electronsRule out c) after drawing Lewis dot structure and seeing that N is satisfied with 8 electrons and each H is satisfied with 2 electronsd) is correct after you draw lewis dot structure becasue Aluminum does not have 8 electrons Q4In polar covalent bonding the two atoms share electrons unevenly between each other due to large electronegativity differences between themThis results in a molecule that is neutral but has charge separation within it (so one atom has partial negative and the other atom has partial positive charge)Such molecule is NOT ionic so you can rule out a)You can rule out d) because the two Cl atoms are same and have same polarityRule out c) because electronegativity of Carbon and Hydrogen is very similar so their bond is not very polar Q5Rule out d) and b) for same reasons as mentioned aboveRule out a) because that is an ionic moleculec) is correct becasue difference in electronegativity between C and O is great enough.
A short ram consists of a short tube with a filter at the end, which will be sitting on top of or next to the engine inside the engine bayThe cold air intake is much longer and places the air filter near the ground/behind the front bumper to get access to colder airThe CAI, being so close to the ground, has the potential to suck water up through the filter and into your engineTo avoid this, you will need to install a bypass somewhere on the tubeMost companies that sell intakes also sell bypasses for themThe short ram doesn't need one because the filter is inside the engine bayCold air setups make more power, but need bypasses, and tend to cost $50 to $100 more than the short ramsI've had both, and to me the short ram is the better choice, unless you are trying to get every last pony out of your engineThey only give up about 2 to 5 horses, are easier to install, cost less, and make your engine sound like one from a race car.
