Virat Kohli wants to wear `6.023times10^(21)` `Ag` atoms in the form of a ring.His Silver-Gold-Copper alloy ring consists of `20%` of silver.The mass of the ring is `"0.9x"` .What is "x"?

When 6.25 times 10^18e^- are passed through aqueous Silver nitrate, '0.00112' grams of Silver is deposited. Then electrochemical equivalent of Ag is "x times 10^-3 then "x" =

A ring of radius R = 4m is made of a highly dense material. Mass of the ring is m_(1) = 5.4 xx 10^(9) kg distributed uniformly over its circumference. A highly dense particle of mass m_(2) = 6 xx 10^(8) kg is placed on the axis of the ring at a distance x_(0) = 3 m from the centre. Neglecting all other forces, except mutual gravitational interacting of the two. Caculate (i) displacemental of the ring when particle is at the centre of ring, and (ii) speed of the particle at that instant.

Figure shows a distance ring of radius R = 43.0 cm. Two small charged beads are on the ring : Bead 1 of charge +20.0 mu C is fixed in place at the left side , bead 2 of charge +6.00 mu C can be moved along the ring. The two beads produce a net electric field of magnitude e at the center of the ring. At what (a) positive and (b) negative value of angle theta should bead 2 be positioned such that E= 2.00 xx 10^(5) N//C ?

5.0 g of a certain element X forms 10.0 g of its oxide having the formula X_4O_6 . What is the atomic mass of X

A copper ring has a diameter of exactly 25 mm at its temperature is 0^@ C . An aluminium sphere has a diameter is exactly 25.05 mm and its temperature it 100^@ C . The sphere is placed on top of the rind and two allowed to come to thermal equilibrium. The ratio of the mass of the sphere and ring is (given alpha_(cu) = 17 xx 10^(-6).^@C^(-1)alpha_(Al) = 2.3 xx 10^(-5) .^@C^(-1) specific heat of Cu is 0.0923 cal//g^@C and for Al is 0.215 cal//g^@C .

2.49 xx 10^(-18)g of an element X contains 2.0 xx 10^(4) atoms. What is the atomic mass of the element X ?

A silver and copper voltameter are connected in parallel to a 12V battery of negligible resistance . In 30 minutes , 1.0 g of silver and 1.8 of copper are deposited . At what rate is the energy being delivered by the battery . The electrochemical equivalents of Ag and Cu are 11.2 xx 10^(-4) g C^(-1) and 6.6 xx 10^(-4) g C^(-1) , respectively .