The following substances dissolve when added to water. classify the substances according to the strongest solute-solvent interaction that will occur between the given substances and water during dissolution.

1.ion-ion forces
2.dipole dipole forces
3.ion dipole forces
4.london dispersion forces

a. hf
b. ch3oh
c. cacl2
d. febr3

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Compare and contrast physical changes with chemical changes.

Select the correct answer from each drop-down menu.describe what happens to a carbon-11 atom when it undergoes positron emission.the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons