Select the correct answer from each drop-down menu. In the compound potassium nitrate (KNO3), the atoms within the nitrate ion are held together with
bonding, and the potassium ion and nitrate ion are held together by
bonding.

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=–7061 kj mol−1.)

Ineed to find the answer of this question because i dont understand it