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A 10.0 gram sample of a compound consisting solely of sulfur and oxygen contains 4.00 grams of sulfur. What is the empirical formula of the compound?
Molar mass of sulfur = 32.0654/32.065 = 0.124Molar mass of Oxygen = 15.9996/15.999 = 0.3750.375/0.124 = 3.02= SO3
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Which of the alkali earth metal is not collected as alkali earth metals because its oxide is not alkaline ?
Beryllium.Beryllium oxide is amphoteric
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write the electron dot formula of:NaOH,N2O,SO2,SO3,SO3--(sulphite ion),sulphate ion,thio sulphate ion,phosphoric acid,phosphate ion,potassium per magnate.
Na:O:H the oxygen atom has 2 lone pair e-, 2 e- on top and 2 e- on the bottom of the oxygen atom :N triple bond N - O :::...
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A reddish brown metal is heated in the presence of oxygen forms a black compound. on heating the black compound with hydrogen gas , we get back the metal.what are the metal and compound
Reddish brown metal is copper (Cu). When copper is heated in the presence of oxygen, it forms copper(II) oxide (CuO) - the black compound. Copper (II) oxide can be reduced...
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A certain ion X3+ contains 24 electrons and 32 neutrons .write down the mass number of this ion and identity the ion using its chemical symbol
mass number = protons + neutronsnumber of electrons = number of protonsThis ion has an electron deficit of 3. Therefore, its mass number is 24+3+32 = 59.The ion is Сo3+
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An ion compound contains an unknown ion X and has the formula X3N2. Ion X contains 10 electrons write down the chemical symbol of X.
Solution:X3N2 → 3X2+ + 2N3-Number of electrons in X2+ ion = 10Therefore,Number of electrons in X = 10 + 2 = 12Number of electrons in X = Number of protons...
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an ion compound contains an unknown ion x and has the formula x3n2.Ion x contains 10 electrons.Write down the chemical symbol of x
Solution:X3N2 → 3X2+ + 2N3-Number of electrons in X2+ ion = 10Therefore,Number of electrons in X = 10 + 2 = 12Number of electrons in X = Number of protons in X =...
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An ionic compound contains an unknown ion X and has a formula X3N2. Ion X contains 10 electrons. Write down the chemical symbol of X
The chemical symbol of X is Mg.
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Which factor does lattice energy of ionic compound depends on?
A. Charge on ion
B. Size on ion
C. Size of ion and charge
D. Arrangement of ion
Answer: С
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A metal (M) forms a compound with the formula MI2 . The compound contains 79.97% I by mass. Identify the metal in the compound? Give the symbol of the metal.
M(MI2)=x+127·2=x+254W(I)=127·2/(x+254)=0.7997x=63.6. Cu
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