Question

7. The melting point of hydrogen is -259°C. The melting point of oxygen is-219°C. Whose melting point
is greater and by how much?
8. Some number added to -13 is 51. Divide the number by -16 and multiply the quotient by 11. What
is the answer?


9.A mine shaft is being drilled from the surface using a method that progresses downward through the
rock the same amount each day. In a 6-day period the drill went from - 10 m to - 46 m. What integer
shall represent the drill's position relative to the surface after 25 days?​

Answer 1

Answer:

hydrogen 259 melting point