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a) frequency of light?
b) Wavelength of radiation?
6NaOH(aq) + 2Al(s) ® 2NA3AlO3(s) + 3H2(g)
What is the balanced equation to show the reaction between CuSO4 and H2O
What are the individual oxidative states for each of the elements in the following substances?
From this equation work out the oxidation states of bromine and sulphur before and after the reaction. from this which has been oxidised and which reduced.
what is the oxidation state of the polyatomic anions permanganate(VII) and dichromate (VI) please show the workings for this.
a.ML2T−4 T−2 A−1
c. M −2 L3T2A−1
d. ML3T−4 A−2
2 Two charges Q 1 =500μC and Q 2 =100μC are located on the XY plane at the positions r 1 =3j ⃗ m and r 2 =4i ⃗ m. Find the force exerted on the Q 2
a. 14.4i ⃗ +10.8j ⃗ N
b. 14.4i ⃗ –10.8j ⃗ N
c. 10.8i ⃗ –14.4j ⃗ N
d. 10.8i ⃗ +14.4j ⃗ N