How many milligrams of sodium thiosulfate (m. w. = 158) are represented by 0.25 mmol? (answer must be numeric; no units or commas; include a leading zero when answer is less than 1; round final answer to the nearest

To calculate for mass, simply multiply molar weight (MW) and number of mols. The molar weight (MW) is in units of mg / mmol. Therefore the mass is:

mass = (158 mg / mmol) (0.25 mmol)

mass = 39.5 mg

39.5

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

idk

step-by-step explanation:

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