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1. Enter the symbol of a sodium ion, Na+, followed by the formula of a sulfate ion, SO42- ..Express your answers as ions separated by a comma. 2.Enter the expression 147N+a, wher
Explain the Purposes of tempering Tempering is a heat treatment approach for alloys and metals. In steels, tempering is done to "toughen" the metal by transforming brittle ma
Q. Describe about atomic number? It is significant to be able to obtain useful information from the periodic table. Beginning with the simplest element hydrogen the periodic ta
Ask quAssuming that the ion formed has a noble gas configuration, write a chemical equation that shows the formation of an anion from a neutral selenium atom. estion #Minimum 100
1. Discuss how such discoveries, technological advancement and breakthroughs were achieved and the person behind this advancement, it can be local or international. 2. List the ma
Hi I need ur help Thank you CuCo3+2HCl=CuCl2+CO3+H2O What mass of cucl2 with react completely with 20 cm3 of 2000 mol cm3 of HCl? Calculate the % yield if 8.5g of chloride was pro
what do you mean by homologous series .
when these are combined...what do they make? And what is it used for?
An electronic transition from 1s orbital of an atom causes: (1) Absorption of energy (2) Release of energy (3) Both release or absorption of energy (4) Unpredictable
When an electron revolves in a stationary orbit then: (1) It absorbs energy (2) It emits radiation (3) Its energy remains constant (4 )It gains kinetic energy Ans:
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