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How many atoms of cobalt are present in a 56.7 mg sample of rock that contains 56.7 percent of cobaltic oxide?
Wiki User
∙ 11y ago
Assuming that cobaltic oxide is the only cobalt-containing constituent of the rock, the mass of cobaltic oxide in the rock is 56.7(0.567) or 32.149 mg. The formula of cobaltic oxide is Co2O3 and its gram formula mass is 165.86.
The formula shows that each formula unit contains 2 atoms of cobalt. The amount of 32.149 mg corresponds to (32.149 X 10-3)/165.86 or 1.938 X 10-4 formul units of cobaltic oxide. The number of atoms in this mass is therefore Avogadro's Number X 2 X 1.9438 X 10-4 or 2.34 X 1020 atoms of cobalt, to the justified number of significant digits.
Wiki User
∙ 11y ago
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What is co hso4 3?
Cobaltic Bisulfate The formula is poorly constructed. It should probably appear as Co(HSO4)3. "Cobaltic" is somewhat archaic. The Stock system, using Roman numerals, is preferred. Therefore, it would be called cobalt (III) bisulfate or cobalt (III) hydrogen sulfate.
What is the formula for cobalt oxide?
The molecular formula is CoO Cation is Co^2+^Anion is O^2-^or in other wordscobalt(II) oxide = CoO = Co2+ + O2-
Is cobalt 16 electron or 18 electron in cobalt salen?
Neithr!!! An atom of Cobalt contains 27 electrons.
Cobalt chloride will give a positive test for?
Cobalt chloride is used to test for the presence of water. If there is no water present it is blue, if water is present it goes pink.
What is cobalt chloride paper in simple terms?
Cobalt chloride paper is absorbent paper which has been soaked in cobalt chloride solution and allowed to dry. It is a convenient way to use cobalt chloride as a test for the presence of water. When cobalt chloride is anhydrous, that is completely without water, it is blue, but when there is water present, either in solution or in the solid, it is pink. To use cobalt chloride paper it is heated to drive off the water present, until it turns blue. You then dip it into the liquid you want to test. Water,or any liquid such as milk which contains water, will turn the paper pink (it may look white if there's not much cobalt chloride on it). Other liquids, e.g. gasoline, will have no effect.
What is difference between cobaltic chloride and cobaltous chloride?
Cobaltous ion has a +2 oxidation state. Cobaltic ion has a +3 oxidation state Cobaltous chloride: CoCl2 Cobaltic chloride: CoCl3
What does CoCN 3 mean?
Cobaltic Cyanide or Cobalt (III) Cyanide
What is co hso4 3?
Cobaltic Bisulfate The formula is poorly constructed. It should probably appear as Co(HSO4)3. "Cobaltic" is somewhat archaic. The Stock system, using Roman numerals, is preferred. Therefore, it would be called cobalt (III) bisulfate or cobalt (III) hydrogen sulfate.
What is the formula for cobalt oxide?
The molecular formula is CoO Cation is Co^2+^Anion is O^2-^or in other wordscobalt(II) oxide = CoO = Co2+ + O2-
What alloy has 24 percent cobalt?
One alloy that contains 24% cobalt is cobalt-chromium-molybdenum (CoCrMo). This type of alloy is commonly used in dental implants, prosthetics, and metal-on-metal hip replacements due to its high strength and corrosion resistance.
Binary ionic compound name for Co2O3?
Take into account that oxygen has a negative 2 charge (O-2) and there are 3 of them; therefore, to form this compound Cobalt must have a positive 3 charge (Co3+) because there are 2 of them. The name of this compound is Cobalt (III) oxide or Cobaltic oxide.
Is cobalt 16 electron or 18 electron in cobalt salen?
Neithr!!! An atom of Cobalt contains 27 electrons.
What is cobalts compound?
The element known as cobalt is present in many compounds.
Cobalt chloride will give a positive test for?
Cobalt chloride is used to test for the presence of water. If there is no water present it is blue, if water is present it goes pink.
How is cobalt chloride used to find out if water is present?
The cobalt chloride changes colour in the presence of water because of the different amount of protons and electrons that are present.
What is cobalt chloride paper in simple terms?
Cobalt chloride paper is absorbent paper which has been soaked in cobalt chloride solution and allowed to dry. It is a convenient way to use cobalt chloride as a test for the presence of water. When cobalt chloride is anhydrous, that is completely without water, it is blue, but when there is water present, either in solution or in the solid, it is pink. To use cobalt chloride paper it is heated to drive off the water present, until it turns blue. You then dip it into the liquid you want to test. Water,or any liquid such as milk which contains water, will turn the paper pink (it may look white if there's not much cobalt chloride on it). Other liquids, e.g. gasoline, will have no effect.
What household items contains cobalt?
magnets that can be put on a fridge
