Show the calculation of the final temperature of the mixture when a 40.5 gram sample of water at 85.7 degrees celcius is added to 36.8 gram sample of water at 26.3 degree celcius in a coffee cup calorimeter

The value of final temperature of the mixture   = 57.42 °c

Explanation:

Mass of first sample =  40.5 gram

Mass of second sample =  36.8 gram

Temperature of first sample = 85.7 °c

Temperature of second sample = 26.3 °c

The energy balance equation for the mixture is written as

+ =  ---------- ( 1 )

Total mass = +

Put the values of &  in this equation we get,

⇒ = 40.5 + 36.8

⇒ =  77.3 gram -------- (2)

Put all the values of mass & temperature in equation 1 we get,

⇒ 40.5 × 85.7 + 36.8 × 26.3 = 77.3 ×

⇒ 4438.69 = 77.3 ×

⇒ = 57.42 °c

This is the value of final temperature of the mixture.

the answers would be

the first one and the second one

the term hydride is commonly named after binary compounds that hydrogen forms with other elements of the periodic table. hydride compounds in general form with almost any element, except a few noble gases. the trends and properties vary according to the type of intermolecular force that bonds the elements together, the temperature, its molecular masses, and other components. hydrides are classified into three major groups, depending on what elements the hydrogen bonds to. the three major groups are covalent, ionic, and metallic hydrides. formally, hydride is known as the negative ion of a hydrogen, h-, also called a hydride ion. because of this negative charge, hydrides have reducing, or basic properties. its special characteristics will be further discussed.

explanation: