For the following reaction KClO4 → KCl + 2O2 Assign oxidation states to each element on each side of the equation.

Question For the following reaction KClO4 → KCl + 2O2 Assign oxidation states to each element on each side of the equation. Reactant Product K Cl O Which element is oxidized? Which element is reduced? Answer (Expert Verified) Oxidation states number (OSN) show how many electrons gained, lost or shared during chemical reactions.  Here are … Read more

What is the only possible value of mℓ for an electron in an s orbital?

Question What is the only possible value of mℓ for an electron in an s orbital? Answer (Expert Verified) The Answer is: The only possible value of mℓ for an electron in an s orbital is 0 (zero). Explanation: mℓ is the third quantum number, named magnetic quantum number. mℓ depends on the second quantum number, ℓ ℓ … Read more

What are table sugar and baking soda examples of?

Question What are table sugar and baking soda examples of? Answer Examples of pure substances include tin, sulphur, diamond, water, pure sugar (sucrose), table salt (sodium chloride) and baking soda (sodium bicarbonate). Crystals, in general, are pure substances. Tin, sulphur, and diamond are examples of pure substances that are chemical elements. All elements are pure … Read more

This represents three steps of the rock cycle. The sediments are layered and compressed in sedimentary rock.

Question This represents three steps of the rock cycle. The sediments are layered and compressed in sedimentary rock. The sedimentary rock is heated and compressed to form metamorphic rock. One thing remains the same from start to finish: the total amount of minerals present. This process represents an important scientific law. What is it? A) … Read more

Car manufacturers use radiation for which task?

Question Car manufacturers use radiation for which task? a) sealing windowsb) drying paintc) cleaning tiresd) lubricating engines Answer B) drying paint EXPLANATION: Car manufacturers use UV radiation to dry the paint o the vehicle. The high reflectivity of infrared radiation helps to keep the car interior cool. It also gives advantages over convection heating. It can … Read more

Which of earth’s systems was most affected by fossilized dinosaurs?

Question Which of earth’s systems was most affected by fossilized dinosaurs? A. Biosphere B. Hydrosphere C. Lithosphere D. Atmosphere Answer Answer : C) Lithosphere Explanation : Lithosphere is the only sphere where fossils can be found. Lithosphere consists of the hard rocks (Crust) and the upper mantle. The imprints of the dead species on rocks … Read more