Calculate the kinetic energy in J of an electron moving at 6.00 × 106 m/s. The mass of an electron is 9.11 × 10-28 g.

Calculate the energy of 1.0 amu in joules using the Einstein s relationship. (1 J= 1 kg.m /s , 1g =6.02x1023 amu) E = C2 (deltam)

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A chemical reaction occurs in three stages. Each stage consists of a mix of positively and negatively charged elements. Some of those elements react by bonding together, but each pair can only consist of 1 negatively charged and 1 positively charged element. Some elements can exist by themselves without bonding with other elements. In the chemical reaction, there are 8 elements (Z, Y, X, W, V, U, T, S). In the first reaction, two pairings were made: Z bonded to T, and U bonded to X. In the third reaction, V bonded to S. The reaction only consisted of three negatively charged elements. Which of the following statements is false? Pick ONE option Y must be positively charged V must be positively charged W must be positively charged T, X, and S could possibly be negatively charged OT, X, and 5 could possibly be positively charged ►

Does the force of attration increase, decrease, or stay the same as two oppositely charged particles approach each other?

4. Which of the following shows a gain of electrons? a) Ca2*(aq) to Ca(s) b) 2Cl(aq) to Cl2(9) c) Fe2*(aq) to Fe3*(aq) d) NaCl(s) to Na*(aq) and Cl(aa)

If mass Q/ mass A in AQ= 0.271 and mass Q/mass A in AxQy= 0.362, what is the formual of AxQy?

How much energy is required to completely separate an electron from a proton that is 210.0 pm away? Express the energy in joules to four significant figures. 15. ΑΣΦ E = ? J

Given the following processes and their respective enthalpies in kJ/mol:             Li(s)  -->  Li(g);               DHs = +161             Li(g)  -->  Li+(g) +  e–;     IE1  = +520             F2(g)  -->  2F(g);               BE = +160             F(g) + e–  --> F-(g);           EA = -328             Li+(g) +  F-(g)  -->  LiF(s);   UL =  x          If the reaction: Li(s)  + ½F2(g)  -->  LiF(s)  has DHf= -616.0 kJ/mol, deduce the value of x for UL (lattice energy in kJ/mol) in LiF.           (A) -1129          (B) -1049          (C) -183          (D) -103