nuclear charge gradually. The atomic radii of group 7‚8 9 &10 elements (i.e. Fe‚Co‚Ni) is almost same because pairing of electrons take place in (n-1)d orbital causing repulsion i.e. shielding of (n-1)d orbital. Group 11 &12 elements i.e. Cu & Zn have bigger size due to strong shielding of completely filled (n-1)d orbital. The transition elements show variable oxidation state due to small energy difference between (n-1)d &ns orbital as a result both (n-1)d &ns electrons take part
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98.) Consider the unbalanced redox reaction: Cr2O72- (aq ) + Cu(s ) → Cr3+ (aq ) + Cu2+ Balance the equation in acidic solution and determine how much of a 0.850 M K2Cr2O7 solution is required to completely dissolve 5.25 g of Cu. Nitric acid is usually purchased in concentrated form with a 70.3% HNO3 concentration by mass and a density of 1.41 g/mL. How much of the concentrated stock solution in milliliters should you use to make 2.5 L of 0.500 M HNO3? Mass %= Mass Solute/ Mass Solvent + Mass
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acceptors 3.Ferichydroxide is insoluble precipitate and has ………………….. a) blue color b) white color c) brown color d) dirty green color 4.The reduction of alkylhallides takes place in the presence of a) Zn/HCl b) Na/HCl c) Mg/HCl d) Cu/HCl 5.Deficiency of vitamin E causes a) rickets b) scurvy c) anemia d) night blindness 6.Which one of the following is reducing sugar? a) glucose b) maltose c) sucrose d) starch 7.Buildings are being damaged by acid rain because
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because Benedict’s solution is composed of sodium citrate‚ sodium carbonate‚ and cupric sulfate pentahydrate. When solution is heated‚ an oxidation-reduction reaction occurs: cupric ion (Cu+2) oxidizes into a cuprous ion (C+) and precipitates into cuprous oxide (Cu2O) because Benedict’s solution loses an oxygen (Cu+2
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The Australian Government’s Response to the Threat of Communism During the Vietnam War Period After WWII‚ Australia still faced a severe threat‚ the threat of communism. Communism was seen as a perfect government‚ a utopia‚ by communists‚ but in reality it’s riddled with corruption and power struggles and a lack social security and identity. The Australian government responded to this threat in many ways‚ they gave economic aid‚ made alliances‚ took military action and even tried to ban the Communist
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bdram11@yahoo.co.in Abstract Toxic trace metals concentrations in soil exert a decisive impact on soil quality and its use in food production particularly in an industrial area. An attempt is made here to study toxic metals such as Cr‚ Cu‚ Ni‚ Pb‚ Zn‚ including Ba‚ Co and V in representative soil samples from Patancheru industrial area near Hyderabad‚ Andhra Pradesh. It is a known polluted area and is one of the most contaminated regions where about 260 small and large-scale manufacturers
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Chapter 1 – Introduction to Data Communications Th is is th e b egin n in g of a cu m u la tive ca s e s tu d y a b ou t a fictit iou s fir m we ca ll Next-Da y Air S er vice (NDAS ). Th e ca s e s t u d y b egin s h er e in Ch a p ter 1 a n d con tin u es th r ou gh ou t th e r es t of th e b ook . It r equ ir es you to com p lete ta s k s th a t a r e r ela ted to top ics cover ed in ea ch cor r es p on d in g ch a p ter of th e text. Th e en d of ea ch ch a p ter con ta in s th e ca s e n
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publisher of the Women’s Weekly. Joaquin started to write short stories‚ poems‚ and essays in 1934. One year later his first work appeared in the Tribune in 1935. In 1947 his essay on the defeat of a Dutch fleet by the Spaniards off the Philippines in 1646 earned him a scholarship to study in Hong Kong at the Albert College‚ founded by the Dominicans. Joaquin’s studies for priesthood explains part the Christian setting of his stories and constant attention to the practices and superstitions of his characters
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The Imperial goals in North America of the British‚ French and Spanish from 1580- 1763 In the late 1500’s many countries desired to increase their wealth and power by improve their imperial interests in the new world. The British‚ French and Spanish all had similar goals in imperializing and colonizing North America. These countries all took slightly different methods in achieving the overall goal of claiming North America and its riches for their respective nations. The differences in
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CU Potential Sales & Profits from Oder-Eater Hosiery | | | Display Boxes | 15000 | Case Size (packages) | 24 | Total Potential Package Sales | 360000 | Average Sale price/package | $6.00 | Average Gross Profit/package | $1.30 | Inventory Turnover Times Annually | 2.54 | Potential Sales/year | $5‚486‚400.00 | Sales through food & drugstores (75% of potential sales) | $4‚114‚800.00 | Potential Profit from sales/year | $1‚188‚720.00 | Expenses over the first
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