In chemistry, the ph of an aqueous solution is a measure of its acidity. for this specific problem, the ph scale ranges from 0 to 14 and are entered in as integers, inclusive. a solution with a ph greater than 7 is basic, and a solution with a ph less than 7 is acidic. it is neutral when ph = 7 write your code using if and else assign ph = 'acidic' if phval < 7 assign ph = 'basic' if phval > 7 assign ph = 'neutral' if phval = 7 assign ph = 'invalid' if phval is not in the range of 0 to 14 the usage of switch statement is mandatory. elseif clause is not permitted write a function ph_switch with input argument phval and output argument ph

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Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant.