When magnesium is added to hydro chloric acid, a gas is formed. Explain what happens in the reaction, how the gas is collected and how it could be tested to prove what it is. The person to answer first will be marked as brainliest and with correct answer.

2b2t

explanation:

2b2t

it would be a gas formation

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.