Precise measurements give the following masses: nuclide mass particle mass 2.0141 u 0n 1.0086649 u н 3.0161 и 5.4858 × 10¬4, u Не 4.0026 и -4 5.4858 x 10 Now consider the following nuclear reaction: H + H - He + ja on O released absorbed Is energy released or absorbed by this reaction? O neither released nor absorbed OI need more information to decide. If you said energy was released or absorbed, calculate how much energy is released or absorbed. Give your answer in both kJ/mol and Mev. Round each of your answers to 3 significant digits. O kJ/mol O MeV Note: take particular care to keep enough digits in any intermediate calculation, and use enough digits in any scientific constants you need, since the data with which you are working are very precise.

Identify the unknown particle X in the following equation for fission. (Enter your answer in the form  A X Z .) 23692U → X + 9436Kr + 3 10n

q eq creq 2req 2req 2req 3 # E D Fill in the nuclide symbol for the missing particle in the following nuclear equation. He+310T1 Q C Submit Answer $4 R F V Retry Entire Group 9 more group attempts remaining % 5 [Review Topics] [References] Use the References to access important values if needed for this question. T Cengage Learning Cengage Technical Support G ^ 6 R MacBook Pro Y H & 7 N U * 00 8 J LE 1 M ( 9 K A O V ) C ** L P A Previous Email Instructor > + 11 { = [ Next> Save and E 11 ? #

Macmillan l 30: F2 W S A 210.2 ng sample of an unknown radioactive substance was placed in storage and its mass measured periodically. After 47 days the amount of radioactive substance had decreased to 26.28 ng. How many half-lives of the unknown radioactive substance have occurred? number of half-lives: #3 H 80 F3 mmand E D A GA $ X C 4 OOD 886 F4 R F % от ото 5 V F5 T G ^ 6 B F6 Y & 7 H 8 F7 U N 00 * 8 DII FB J L - ( 9 M K DD F9 O . V - ... I 4 F11 { [ option + = ? 11 1 F12 } ] half-lives delete return st