a solid x when heated gives up a brown gas. If x is soluble in excess sodium hydroxide solution but insoluble in excess ammonium hydroxide solition. What is X?

Metalloids have properties of what other families or elements? Group of answer choices non-metals and halogens metals and halogens metals and non-metals alkali and alkali earth metals

If you started with 50.0 grams of h2s and 60.0 grams of o2, how many grams of s8 would be produced, assuming 98 % yield?

Ammonia is among the top ten synthesized compounds. Its many uses include the manufacture of ammonium nitrate and other fertilizers. Ammonia decomposes at high temperatures. In an experiment to explore this behavior, 2.

If a person walks 1.3m/s how far will that person walk in 300 s?

What type of radioactive decay involves two protons and two neutrons? alpha emission beta emission positron emission gamma rays

Which atom has a nucleus that contains 13 protons and 14 neutrons 1. Mg 2. Be 3. Al 4. N

Determine the oxidation state of the metal ion in [co (nh3) 5br]2+. express your answer as an integer.

Which functional group contains oxygen atom? a. Carbonyl group b. Amino group c. Sulfhydryl group

A mountain is a example of solid?

Explain, in terms of electrons, why the radius of a calcium ion is smaller than the radius of a calcium atom.