B) A piece of solid gold was heated from 274K to 314K using 55.7J of energy to raise the

Chemistry

1 answer:

Solnce55 [7]3 years ago

8 0

Answer:

Explanation:

So we know q = mc $\Delta$ T.

q = 55.7 J

c = 0.129j/g°C

and $\Delta$ T = 314-274 = 40°C.

and m is mass which can solve since we got every other variable. We will get m = 10.8g.

You might be interested in

Ag + HCl --> ?

denpristay [2]

Ag + HCI = AgCI + H2

8 0

3 years ago

A sling psychrometer measures __ in % of water vapor in the air.

Solnce55 [7]

humidity can be measured by the simplest hygrometer, called a sling psychrometer. It is composed of two thermometers placed together with a handle set to a chain. One of the thermometers is just like any other thermometer. Erstwhile the other one has a cloth wick wrapped over its bulb and is called a wet-bulb thermometer.

Have a great day!

-Pepetreefrogthe2nd

6 0

3 years ago

A 3.96x10^-24 M solution of compound A exhibited an absorbance of 0.624 at 238 nm in a 1.000-cm cuvet; a blank solution containi

viktelen [127]

Actual question from source:-

A 3.96x10-4 M solution of compound A exhibited an absorbance of 0.624 at 238 nm in a 1.000 cm cuvette. A blank had an absorbance of 0.029. The absorbance of an unknown solution of compound A was 0.375. Find the concentration of A in the unknown.

Answer:

Molar absorptivity of compound A = $1502.53\ {Ms}^{-1}$