Why does the notation 13C - have a negative sign in the upper right hand corner

Sodium chloride is produced from its elements through a synthesis reaction. what mass of each reactant would be required to produce 29.0 mol of sodium chloride?

4. What kept the concept of continental drift from originally being accepted?

What is the reason for the low solubility of LiF (0.27 g per100 ml H2O) compared to CsF (367 g per 100 ml H2O) ?

At the same temperature and pressure, 1.0 liter of CO (g) and 1.0 liter of CO2 (g) have A. equal masses and the same number of molecules B. different masses and a different number of molecules C. equal volumes and the same number of molecules D.

Is battery acid a a. heterogeneous mixture b. homogeneous mixture

There is a large increase in ionization energy between the second and the third ionization energies of a metal. What kind of ion is the metal likely to form? Include the charge in your answer.

Which of the following are true statements about equilibrium systems? For the following reaction at equilibrium: CaCO3 (s) ⇌ CaO (s) + CO2 (g) adding more CaCO3 will shift the equilibrium to the right.

How many sulfide ions are present in 23.5g of Sb2S3

2. An automobile tire has a pressure of 210 kPa at 293 K. What will be the tire pressure after driving, if the tire temperature rises to 308 K?

Students measuring the mass of a rock record 6.759 g, 6.786 g, 6.812 g, and 6.779 g. Which other measurement of the block's mass would be most precise? A. 6.702 g B. 6.781 g C. 6.605 g D. 6.858 g