S + HNO3 = H2SO4 + NO2

What are the coordination numbers of li + and s2 - in the lithium sulfide crystal shown? enter the values in order of li + and s2-, respectively?

The enthalpies of formation of the compounds in the combustion of methane, , are CH4 (g) : Hf = - 74.6 kJ/mol; CO2 (g) : Hf = - 393.5 kJ/mol; and H2 O (g) : Hf = - 241.82 kJ/mol. How much heat is released by the combustion of 2 mol of methane? Use.

A team of scientists is studying the fossils in the cross-section of rock shown below. Between which two layer of fossils can secondary succession be observed? A) Layers 1 and 2. B) Layers 2 and 3. C) Layers 3 and 4. D) Layers 1 and 4. Eliminate

What is 4.7 rounded to the nearest tenth

N2 + 3 H2 → 2 NH3 If 3.45 moles of nitrogen gas (N2) are added to 4.85 moles of hydrogen gas (H2), then: a) How many moles of ammonia (NH3) can form? 3.

How many moles of al2o3 are formed when 0.78 mol o2 reacts with aluminum?

The dissociation of a weak electrolyte is suppressed when

There are seven major levels of classification. Kingdom and Phylum are just two of the levels. Which of the following are also major levels of classification? Choose all answers that are correct. A. Class B. Order C. Family D. Level

An experiment with high validity is

What is the smallest part of a tree that can do all the things needed for life?