I am doing a worksheet in Chemistry and need a bit of help.9Given quot;Xquot; could be any element determine the charge on 'X' given the following chemical formula: X3P31An atom that has 5 valence electrons would probably form an ion with what charge? Explain.366.02 E 23 is the number of particles in what? Why is this important? (I know the number is the amount of particles in a mole, but why is it important?)44How much aluminum chloride is produced when 10 g of aluminum reacts with 5 grams of chlorine? 2Al + 3Cl2 -gt; 2AlCl3Thanks!
I saw a cool airplane in my Chemistry classIt was made out of coke cansIt was very cool.
tell ur son to stretch his arms (sideways) so that they are like wings of an airplanethen make a mask for him which has a picture of the front of an airplanethen tell ur son 2 wear white runnig shoes and run to schooll making a zoooooooooooooooooooooooooooooooooing sound and tell him 2 go straight to his teacher.
The whole idea is that your child is supposed to look around the house and find things to use to make an airplaneWhatever you have around the house could be converted into a plane for a child - it just depends on the child's imaginationThat's the point of the assignmentLet your child have access to some supplies and let them figure out how to make their own airplane.
9Given X could be any element determine the charge on 'X' given the following chemical formula: X3P Answer: Charge on X is +1 31An atom that has 5 valence electrons would probably form an ion with what charge? Explain Answer: The charge will be -3, because by accepting 3 electrons its octet will be completed366.02 E 23 is the number of particles in what? Why is this important? (I know the number is the amount of particles in a mole, but why is it important?) Answer: The importance of the number is that one mole of any substance though having different molar mass will have the same number of particles and thus making it easy to compare them44How much aluminum chloride is produced when 10 g of aluminum reacts with 5 grams of chlorine? 2Al + 3Cl2 - 2AlCl3 2mol 3 mol 2 mol 10g Al 10/27 0.37 mol Al 5g Cl2 5/71 0.07 mol Cl2 From the above reaction it is evident that 2 mol Al combines with 3 moles of Cl2 to give 2 moles of AlCl3 So 0.37 mol Al will require 3x0.37/2 0.555 mol Cl2 to combine, but we have only 0.07 mol Cl2, so it will be acting as limiting reactantTherefore, the above problem can be solved as: 3 mol Cl2 combines with 2 mol Al to give 2 mol AlCl3 So 0.07 mol Cl2 will combine with 2x0.07/3 0.047 mol Al to give 2x0.07/3 0.047 mol AlCl3 i.e0.047 mol AlCl3 0.047x 240 11.28 g
toilet paper or paper towel rolls paper plates cardboard pipe cleaners All of these objects can be fashioned into an airplaneNOt sure how well it would fly, but have fun with it!!
