Which of the following elements is a transition metal? a. cesium b. copper c. tellurium d. tin Elements: Elements are pure substances that are composed of only one kind of atom. All know elements can be found listed in the periodic table of elements where the...
Which alloy of aluminum is used for making magnet? If a compound absorbs light at 595 nm, what color would you expect it to be? Why can knowing the color of a pure compound give you a reasonable guess as to whether a material is a semiconductor or insulato...
PROBLEM TO BE SOLVED: To provide a tin alloy used for replenishing stannous ions, which relates to improvement in a technology of manufacturing a tin-plated steel sheet with an electrolytic tin-plating method using an insoluble anode, and can quickly replenish the stannous ions that are consumed...
while hauling a new machine to the plant, the traffic(22)is not part of the cost of the new machine, ff the machine is dropped and(23)while being uploaded, the cost of repairing the damage should be(24)as expense in the current period and should not be added(25)the cost of ...
But no amount of scenic beauty can save the line from British Rail’s cash problems. This year, for the 4 of economy, the express trains which used to pass through Dent station have been put on to another route. It is now an open secret that British Rail sees no future for this ...
To determine which alloy does not contain copper, we will analyze each of the given options one by one.Step 1: Understand what an alloy is. An alloy is a mixture of two or more metallic elements, which often enhances the proper
PURPOSE: To improve appearance, uniform electro deposition property and adhesiveness in a wide current density range by adding a specific azol compound into a tin, lead or tin-lead alloy plating bath. ;CONSTITUTION: An azol compound is expressed by the formula I. In the formula I, R<Sub>1...
How many pounds of tin are contained in 56 pounds of the alloy ?() (1)By weight the alloy is lead and copper. (2)By weight the alloy contains 6 parts lead and 5 parts copper A.条件(1)充分,但条件(2)不充分. B.条件(2)充分,但条件(1)不充分. C.条件(1)和(2)单独都不充分,但...
PROBLEM TO BE SOLVED: To impart good solderability to various parts and to enable the formation of plating films by incorporating water-soluble tin salt, water-soluble copper salt, a compound selected from an inorganic acid, organic acid and their water- soluble salt and a compound selected from...
Which processes can be useful for the refining of tin? How do impurities influence the melting point? Which metal can be obtained form the ore by heating alone? Define mineral, rock, and ore. Is bauxite a mineral or a rock? Explain. ...