Experimentally it was found that a metal oxide has formula M0.98O. Metal M, is present as M2+andM3+ in its oxide. Fraction of the metal which exists as M3+ would be:
Connecting you to a tutor in 60 seconds.
Get answers to your doubts.
Let αand βbe the roots of equation x2−6x−2=0. If an=αn−βn,forn≥1, then the value of 2a9a10−2a8is equal to:
Arrange the following compounds in order of decreasing acidity:
What is the minimum energy required to launch a satellite of mass m from the surface of a planet of mass M and radius R in a circular orbit at an altitude of 2R?
The standard Gibbs energy change at 300 K for the reaction 2A⇔B+C is 2494.2J. At a given time, the composition of the reaction mixture is [A]=21,[B]=2and[C]=21. The reaction proceeds in the : [R=8.314J/K/mol,e=2.718]
A gaseous hydrocarbon gives upon combustion 0.72 g of water and 3.08 g of CO2. The empirical formula of the hydrocarbon is:
Let a and b be the roots of equation px2+qx+r=0,p=0.. If p, q, r are in A.P. and α1+β1=4, then the value of ∣α−β∣ is
If the vectors AB=3i^+4k^ and AC=5i^−2j^+4k^are the sides of a triangle ABC, then the length of the median through A is
If z is a complex number of unit modulus and argument q, then arg(1+z1+z)equal