Nitrogen and Hydrogen gas react to form ammonia as shown in the following reaction:

N2 (g) + 3H2 (g) = 2NH3 (g)

If a sample of 4.5 moles of hydrogen gas was reacted with excess nitrogen, how many moles of ammonia gas would be produced?

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In calcium fluoride, what is the closets noble gas that each ion becomes?

Write the formula for the the ionic compound zinc and hydroxide

Milk of magnesia, which is an aqueous suspension of magnesium hydroxide, is used as an antacid in the reaction below. How many molecules of HCl would have to be present to form 70.84 g of MgCl₂? Mg (OH) ₂ (s) + 2 HCl (aq) → 2 H₂O (l) + MgCl₂ (aq)

A neutral atom has the following characteristics atomic number 16 atomic mass 32 determine the value of this atoms electrons protons and neutrons

Extend E1 Explain why the arrangement, movement and energy of particles change during changes of state.

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Addition of an excess of lead (II) nitrate to a 50.0mL solution of magnesium chloride caused a formation of 7.35g of lead (II) chloride precipitate. What was the molar concentration of chloride ions in the solution (in mol/L) ?

2.70 L of a gas has a pressure of 0.63 atm. What is the volume of the gas at 105 kPa?

Which statements describe Rutherford's model of the atom? Select all that apply.