Tin 4. The word interpolate means to use a given line graph to find unknown points between the plotted points of the graph. Use your line graph from Part II to interpolate, or estimate, atomic radius of Tin (Sn). I think it would be in around 145. 5.
Describe the general trend or patterns that you observed in the atomic radius as you go across the periodic table.  (2 points) Answer: The general trend observed is as the atomic number increases the atomic radius of the element decreases 2. In Part II of this assignment, you graphed the atomic radius of some elements from group 14 on the periodic table. What is the general trend for atomic radius going down that group? (2 points) Answer: The general trend for the atomic radius going down the group is that as the atomic number increases the atomic radius also increases 3. What element in Period 5 of the periodic table is a member of Group 14?
Number – 19g average mass 1.7g 4) If a 4th isotope of beanium, D (green), were added to the pool, how would the average atomic mass change? Mixture of an element and a compound, changing the subscript changes of the compound. 5) Compare your average atomic mass to that group next to you. Why is the number slightly different? Would the difference be larger or smaller sizes were used?
IB HL Chemistry Energetics - End of Topic Test 35 min 37 marks Answer all the questions in the spaces provided 1. What energy changes occur when chemical bonds are formed and broken? A. Energy is absorbed when bonds are formed and when they are broken. B.
According to Bender oxygen and hydrogen are elements other than carbon used to define mole. A mole is the quantity of an element that weighs out in grams the amount of an element specified by the atomic weight. Work Cited Bodner , George M. "How was Avogadro's number determined?." scientific american. © 2013 Scientific American, a Division of Nature America, Inc., 16 Feb 2004.
Write a pseudocode statement that declares the variable cost so it can hold real numbers. * Dim cost1 As Double = 0 6. Write a pseudocode statement that declares the variable total so it can hold integers. Initialize the variable with the value 0. * Dim cost1 As Integer = 0 7.
Trends of the Periodic Table of Elements Introduction The objective of this experiment was to establish trends in the Periodic Table of Elements, involving the characteristics of elements in the same group and/or period. In Part 1, the melting point trends of metals in Group 1, Period 3, Period 4, Period 5, and Period 6 were observed, using the Web Elements website (http://www.webelements.com/), and then were graphed (by each Group or Period individually) to display the trends. Trends were observed in all graphs, and the melting points were related to multiple variables, such as electron configurations, nuclear charge, shielding, atomic radii, and cohesion energies. In Part 2, Group two nitrates were mixed with different solutions, and were observed for indications of chemical reactions (precipitate formation and solubility) that formed periodic trends. In Part 3, six specific metals were reacted, in individual test tubes, with hydrochloric acid and a variety of different metal ion solutions, in order to find if a reaction of metal displacement happened.
Objective: The objective of the first lab is to use the graph of Pressure versus Temperature to estimate the value of Absolute Zero. Based on the Gay-Lussac’s Law, pressure is proportional to temperature; we are able to find the Absolute Zero when the pressure reaches zero. Conclusion: Our experimental result is -285.40 C. It means when pressure reaches zero, the temperature should reach -273.15 C, which is the value of Absolute Zero. Our experimental Absolute Zero value is fairly close to the accepted value, and the percentage error is 4.48%. One of the major sources of error in this experiment is that the volume of metal ball will rise while the surrounding water’s temperature rise.
AP 10006 Test (Total 100 Marks) Question 1(26.28) Consider the following figure. (a) Find the equivalent capacitance between points a and b for the group of capacitors connected as shown in the figure above. Take C1 = 6.00 µF, C2 = 3.0 µF, and C3 = 2.00 µF. (15 marks) (b) What charge is stored on C3 if the potential difference between points a and b is 100.0 V? (15 marks) Answers (a) C1 and C2 in series = 2uF Cupper = 2uF + 2uF + 2uF = 6uF Clower = 3uF + 3uF = 6uF Cequ = 3uF (b) Qupper = Qequ = Cequ V = 3uF100V = 300uC Vupper = Qupper/Cupper = 300uC/6uF = 50V Charge stored in C3 = 2uF50V = 100uC (15 marks) (15 marks) Question 2 (27.53) A charge Q is placed on a capacitor of capacitance C. The capacitor is connected into the circuit as shown in the figure below, with an open switch, a resistor, and an initially uncharged capacitor of capacitance 4C.
An Overview Of Synthesis And Preparation Experiments Biology Essay Introduction : As we know, Manganese is found in the first row of transition metal with the electron configuration [Ar] 3d5 4s2. Besides that, Manganese has different type of oxidation states when it appears as a compound and the oxidation state is from Mn(-III) until Mn(VII). So, we know that the compounds of manganese range in the oxidation number have a different of 10 electrons. In the experiment 1, we prepare tris(acetylacetonato)manganese(III), Mn(acac)3 by using manganese(II) chloride tetrahydrate and potassium permanganate act as oxidation agent to oxidise manganese(II) chloride to acetylacetonemanganese(III). Manganese(III) acetylacetonate is an one- electron oxidant.