One scientist did an experiment with a coin. The steps of the experiment are listed below. Place a coin on a table at a distance of about 1 meter from the eyes.
Hold up one finger and use it to cover the coin from the line of sight.
Without moving the finger, close one eye.
Observe that the coin appears to shift and come into the line of sight.
Estimate the approximate distance by which the coin shifts.
Repeat steps 2, 3, 4, and 5 by placing the coin at distances of 50 cm and 25 cm.

Based on the experiment, what would the scientist most likely conclude about the parallax method of measurement of star distances?

i just learnt this recently but i need to look through my notes again

answer; natural resources;

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

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