M5 579 g would be 100 mass M2 So 57965 8.91 moles NaN3 Then M3 Moles NaNH2 8.91 2 ( 17.8(2) moles) M4 mass NaNH2 17.8(2) 39 M5 693 or 694 or 695 (g) If a car is involved in a serious collision, the sodium azide decomposes to form sodium and nitrogen as shown in the equation.
Write an equation to show this cracking reaction C16H34 C8H18 C2H4 2C3H6 Suggest one important substance manufactured on a large scale from propene. Saturated - single bonds only no double bonds Hydrocarbon - contains carbon and hydrogen (atoms) only If the boiler for a central heating system is faulty, a poisonous gas may be produced during the combustion of C16H34 Write an equation for the reaction that forms this poisonous gas and one other product only C16H34 16.5O2 16CO 17H2O Explain why the sulfur compounds found in crude oil should be removed from the fractions before they are used for central heating fuel. State the strongest type of interaction that occurs between molecules of hydrogen peroxide and water. M1) NiSO4 H2O 1.344 (M2) 0.943 (M3) 154.8 18 (8.68 10-3 0.052) 1 6 or x 6 (M4) Suggest how a student doing this experiment could check that all the water had been removed. The solid remaining had a mass of 1.344 g. SiO2 6HF H2SiF6 2H2O A sample of hydrated nickel sulfate (NiSO4.xH2O) with a mass of 2.287 g was heated to remove all water of crystallisation.
Cracking of dodecane to make ethene hybridization free#
No delocalised electrons no free ions no free charged particles Silicon dioxide reacts with hydrofluoric acid (HF) to produce hexafluorosilicic acid (H2SiF6) and one other substance. Ing Of Dodecane To Make Ethene Free Ions No Macromolecular giant covalent giant molecule Suggest why silicon dioxide does not conduct electricity when molten. Give the name of the type of crystal structure shown by silicon dioxide. Same (Each isotope has the) same number of protonssame nuclear charge and same number of electrons electronic configuration Silicon dioxide (SiO2) has a crystal structure similar to diamond. Other isotopes presentsome isotopes absent different abundances of isotopes Write an equation for the reaction that occurs when a tellurium ion hits the detector. Kr 5s2 4d10 5p4 Suggest what might cause the relative atomic mass of the sample from a mass spectrometer to be different from the relative atomic mass given in the Periodic Table.
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