spicymery spicymery

03-03-2020
Chemistry

contestada

How much heat is released when a 20g block of lead cools from 150°C to 120°C

How much heat is released when a 20g block of lead cools from 150C to 120C class=

Respuesta :

kinyonethan1 kinyonethan1

03-03-2020

Answer:

96 Joules of heat released.

Explanation:

q=mc∆t

q=(20)(.16)(-30)

q=-96

Q negative means heat is released.

Answer Link

Otras preguntas

Which point is the image of R? Choose one answer: A B C D

what's the maximum shear on a 3.0 m beam carrying 10 kN/m?

(1) 4p²q : 10pq²(2) 9 months : 2/½ years(3) 5 m : 600 cmI need answers asap, thanks!! <3

What was the result of the long march?

An element A reacts with water to form a compound B which is used in white washing. On exposure to air compound B forms C. The compound C on heating forms an ox

Find a solution to the linear equation y=−x+7 by filling in the boxes with a valid value of x and y.

Identify the 13th, 14th and 15th amendments. please

Ethane burns according to the following reaction: 2C2H6 + 7O2 → 4CO2 + 6H2O + 2.86 x 103 kJ How much heat can be generated when 185 grams of oxygen gas (MW = 32

(Tough day dividing polynomials and I'm still lost!) Please help me my hands are legit numb:)

Sandy purchases a perpetuity-immediate that makes annual payments. The first payment is 100, and each payment thereafter increases by 10. Danny purchases a perp