Ice, water, fog/water vapor
Answer:
Explanation: Catalysis is the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst. Catalysts are not consumed in the reaction and remain unchanged after it.
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Molar mass KBrO2 = 151.0011 g/mol
1 mole KBr --------- 151.0011 g
So in 0.168 moles :
mass = number of moles * molar mass
mass = 0.168 * 151.0011
mass = 25.36 g of KBrO2
Answer:
D. Electrons: Negative.
Explanation:
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In this case, by considering the Bohr's atomic model in which atom is composed by a nuclei containing both protons and neutrons which are positively and neutrally charged respectively and surrounding electrons assembled in orbits or levels of energy which are negatively charged in order to provide a balance to the atom, the correct statement is: D. Electrons: Negative. Also consider the Bohr's model on the attached picture.
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Any of the elements occupying group 17 on the periodic table. They form highly acidic compounds with hydrogen.
The elements are:
Fluorine (F)
Chlorine (Cl)
Bromine (Br)
Iodine (I)
Astatine (At)