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❓ Question Let A = ( a b 0 d ) , a , b , d ∈ { − 1 , 0 , 1 } A=\begin{pmatrix} a & b\\ 0 & d \end{pmatrix}, \qquad a,b,d\in\{-1,0,1\} and…

❓ Question Let A = { 0 , 1 , 2 , 3 , 4 , 5 } A=\{0,1,2,3,4,5\} and let R R be a relation on A A defined by ( x , y ) ∈ R ⟺ max ⁡ ( x , y…

❓ Question A 15% (w/w) H₂SO₄ solution has a density of 1.020 g cm⁻³ . Find: Molarity (M) Molality (m) (Given: Molar mass of H₂SO₄ = 98 …

❓ Question Magnesium reacts with sulphur to form magnesium sulphide. Mg + S → MgS \boxed{\text{Mg} + \text{S} \rightarrow \text{MgS}} Given: Ato…

❓ Question 100 mL of PH₃ gas decomposes to give P₄ and H₂. Find the change in volume. Reaction: 4 P H 3 ( g ) → P 4 ( s ) + 6 H 2 ( g ) 4PH_3(g)…

❓ Question The molarity of a 70% (m/m) aqueous solution of a monobasic acid (X) is: Given: Density of solution = 1.25 g mL⁻¹ Molar mass o…

❓ Question Concentrated nitric acid is labeled as 75% by mass . The volume (in mL) of the solution containing 30 g of H N O 3 HNO_3 is: Given:…

❓ Question Concentrated nitric acid is labeled as 75% by mass . Find the volume (in mL) of the solution that contains 30 g of H N O 3 HNO_3 . Gi…

❓ Question Quantitative analysis of an organic compound X X gives the following composition: Carbon = 14.5% Chlorine = 64.46% Hydrogen =…