In what way would readings from a digital thermometer be preferable to those from a liquid-based thermometer? readings from a digital thermometer are easier to use when performing calculations. readings from a digital thermometer can be more readily combined with computer software. readings from a digital thermometer are more accurate. readings from a digital thermometer are less prone to fluctuation.

Option (b) is the correct answer.

Explanation:

A digital thermometer uses electronic heat sensors to measure the temperature of human body.

So, digital thermometers provide exact reading of the body temperature which are the most accurate as compared to the reading provided by a liquid based thermometer.

Thus, we can conclude that readings from a digital thermometer are more accurate, that is why, readings from a digital thermometer be preferable to those from a liquid-based thermometer.

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2