shubham2097

 6.3 mg of boron hydride is contained in a flask of 385 mL at 25.0° C and
a pressure of 11 Torr.
(a) Determine the molar mass of the hydride.
(b) Which of the following hydrides is contained in the flask, BH3
, B2H6 or B4H10?

Doc Inmaking is trying to identify a clear colorless solvent. The possible identities are toluene (density = 0.867g / m * L) , ethanol (density = 0.789g / m * L) , and chloroform (density = 1.483g / m * L) . He obtains an experimental density of 0.81 plus/minus 0.03g / m * L . What is the most likely identity of his sample? Is his experimental value sufficiently accurate?

What is Guillaume puts a bottle of soft drink in a refrigerator and leaves it there until its temperature has dropped 18.6 K.

What is the magnitude of its temperature change |ΔT|= 18.6 K in degrees Celsius?

Amy pays $25 to enter a state fair, plus $3 for each ride. Which of the following equations represent her total cost?

⭕ A. y = 28x

⭕ B. y = 3x + 25

⭕ C. y = 25x + 3

⭕ D. y = 3x + 28