What trend in ionization energy occurs across a period on the periodic table? What causes this trend?

A 25.0-milliliter sample of HNO3 (aq) is neutralized by 32.1 milliliters of 0.150 M KOH (aq). What is the molarity of the HNO3 (aq) ? (1) 0.117 M (3) 0.193 M (2) 0.150 M (4) 0.300 M

Who was in control of Afghanistan when the U. S. and Allied forces invaded it in 2001? A. al-Qaeda B. the Taliban C. the Ba'ath Party D. the Mujahadeen

In the reaction C7H16 + __O2 → 8H2O + 7CO2, what coefficient should be placed in front of O2 to balance the reaction? 7 8 11 no coefficient is needed

How many moles of aluminium are in 3.45 moles of pyrophyllite

Rank the following steps involved in preparing a dilute solution from a stock solution in order from first to last. A. Add deionized water until the volume reaches the mark on the flask. B. Add the desired amount of stock solution. C.

Which of the following statements is true? Selected Answer: D. At least two of the above statements (A-C) are true. Answers: A. Ions are formed by adding or removing protons or electrons. B. Scientists believe that solids are mostly open space. C.

Does anybody know which element from the periodic table that has 19 electrons and 24 neutrons, for atomic charge.

Given the following reaction 2Al + 3Cl2 - -> 2AlCl3 How many grams of AlCl3 aluminum chloride will be produced from 125 g of Al and 125 g of Cl2?

Potassium chlorate (used in fireworks, flares, and safety matches) forms oxygen and potassium chloride when heated. KClO3 (s) → KCl (s) + O2 (g) [unbalanced] What mass of oxygen gas is formed if 26.4 g of potassium chlorate decomposes completely?

Explain the iodine clock reaction.