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3 Mn3O4(s) + 8 Al(s) → 4 Al2O3(s) + 9 Mn(s)
How many manganese atoms are released if 54.8 moles of Mn3O4 react with excess aluminum.
A 0.784-g sample of an alloy containing Al and Mg is dissolved and treated to prevent interferences by the alloy’s other constituents. Aluminum and magnesium are precipitated, providing a mixed precipitate of Al(C9H6NO)3 and Mg(C9H6NO)2 that weighs 8.215 g. Igniting the precipitate converts it to a mixture of Al2O3 and MgO that weighs 0.932 g. Calculate the %w/w Al and %w/w Mg in the alloy.
Does butyl cab dissolve sugar
Express the standard reaction enthalpy of the reaction, C2H6 (g) + 7/2 02 (g) --> 2C02 (g) + 3 H2 0(1). Given the standard enthalpy for formation of C2H6, CO2and H2O are -84.6, -393.5 and -285.8 kJ mol-1 respectively.
The enthalpy of combusbon for methane at 298.15 K is -726.1 kJ mol-1 .What is its enthalpy of
formation? (given: ∆Hf (C02 ) =-393.5 kJmol-1
and ∆Hf (H2O) = -285.8 kJmol-1·.
The reaction between solid white phosphorus and oxygen produces solid tetraphosphorusdecoxide (P4O10)
A. Write the balanced chemical equation of the reaction
b. Determine the mass of tetraphosphorusdecoxide (P4O10) formed if 26.0 g of phosphorus (P4) and 49.5 g oxygen (O2) are combined.
C. How much of the excess reactant remains after the reaction stops.
A 75A current flows due north through a vertical wire. Calculate the magnetic field 13cm to the wire's right.
An aliphatic carboxylic acid reacts with an alcohol and the following equilibrium is established RCOOH+R'CH^2OH=RCOOCH^2R'+H^2O what is the number of constituents and the number of components in the system.
Which of the statements is correct?
1.Carbon may form a polar or non-polar covalent bond.
2.A carbon-hydrogen bond ethane (CH3CH3) is highly polar.
3.In a carbon atom, the 2s and 2p orbitals are equal in energy.
4.Carbon has two valence electrons.
The reaction between solid white phosphorus and oxygen producing solid tetraphosphorusdecoxide (P4O10)
