What is the mol of 8.50g of nh3

In Thomson's plum pudding model the mass of the atom is in the A. electrons. B. matter between the electrons. C. nucleus. D. proton

A 500 mL sample of 0.5 M NaOH at 20 C is mixed with an equal volume of 0.5 M HCl at the same temperature in a calorimeter. The temperature rises to 23.21 C. Calculate the heat of the reaction. ( - 53.72 kJ/mol)

Sodium is in group 1 of the periodic table. A sodium ion (Na+) has a charge of + 1. Which of the following would be most likely to combine with an sodium ion to form a new compound? A. a helium atom that has no charge B.

What ion is part of all nucleic acids? a. Fluorine c. Phosphoric acid b. Chloride d. Nitrogenic acid

For the reaction 2N2O5 (g) 4NO2 (g) + O2 (g), the following data were colected: t (minutes) [N2O5] (mol/L) 0 1.24x10-2 10 0.92x10-2 20 0.68x10-2 30 0.50x10-2 40 0.37x10-2 50 0.28x10-2 70 0.

Lab 27. stoichiometry and chemical reactions: which balanced chemical equation best represents the thermal decomposition of sodium bicarbonate?

An ideal gas will occupy 22.4 L at standard temperature and pressure. What is this volume in cubic centimeters? - cm3

When placed in a freezer, liquid water turns into ice. What best describes this change?

Which of the following has only one loop for a current to flow through A) parallel B) series

What are three steps scientist take to evaluate a scientific explanation