a sketch to show how thermal and chemical energy interact in the system made up of water and ammonium chloride

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

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

Write the formula for the following chemicals. 7. e. trinitrogen tetraoxide a calcium phosphate f. magnesium acetate b. potassium sulfide g nickel(iii) cyanide c carbon dioxide h. silver sulfate d. cobalt(ii) chloride