Why was 1990 an important year regarding air quality?

If the reaction starts with 20 moles of NaF, how many moles of AlF3 would you produce? AL (NO3) 3 (aq) + NaF (aq) - -> 3 NaNO3 (aq) + ALF3 (aq)

3. Which net ionic equation describes this reaction? 3Ca (OH) 2 (aq) + 2FeCl3 (aq) → 3CaCl2 (aq) + 2Fe (OH) 3 (s) 3Ca2 + (aq) + 3OH - (aq) + Fe3 + (aq) → Fe (OH) 3 (s) + CaCl2 (aq) Fe3 + (aq) + 3OH - (aq) + 3Ca2 + (aq) → Fe (OH) 3 (s) + 3Ca2 + (aq)

How does Precipitation Form

What property is electromagnetic

Calculate the density of an object that occupies 17.3 cm^3 and has a mass of 39.26 grams. Will that object float in water, given that density of water is 1.00 g/cm^3? Explain your answer

To establish the Intermediate Nuclear Forces Treaty, Reagan negotiated with A. Yeltsin. B. Khomeini. C. Brzezinski. D. Gorbachev.

Which pair of elements can form an ionic compound? A) Two atoms of hydrogen B) One atom of sodium and one atom of fluorine C) One atom of calcium and one atom of chlorine D) Two atoms of hydrogen and one atom of oxygen

If 9.96 L of gas at 13°C and 2.28 atm is compressed at a pressure of 133 atm and 29°C, calculate the

In a piece of silver where would you find the valence electrons

Reactions cannot occur without a certain minimum amount of energy. what is this minimum amount of energy called?