If the result after calculating the heat of the calorimeter is negative, what conclusion can you make?

New technologies have allowed buildings to become taller and heavier than ever before. This is an example of:

What is the net ionic charge of a calcium ion? A. + 1 B. - 1 C. - 2 D. + 2

What is the charge on the ion formed by aluminum?

What do all the elements in one row of the periodic table have in common? A. They all have similar chemical reactions. B. They all have the same number of core electrons C. They all have the same number of valence electrons. D.

Which of the following is a single replacement reaction?

What is the wavelength of 2.18*1016 hz wave?

Which of the following summarizes photosynthesis? A. glucose + carbon dioxide → oxygen + water B. carbon dioxide + water → glucose + oxygen + water C. oxygen + water → glucose + carbon dioxide + water D.

Explain the effects of nh3 and hcl on the cuso4 solution in terms of le chatelier's principle

At 25°C 12 M H202 is decomposed after 30 minutes the concentration of the H2O2 is found to be 9.5 M what is the average reaction rate for this decomposition reaction.

Give an example of a solution that can be seperated by simple distilation.