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

At a store, hot dogs come in packages of eight and hot dog buns come in packages of twelve. What is the least number of packages of each type that you can buy a

How did the manifest destiny change the american spirit?

If you’ve used a thesis from another writer’s work as your thesis, it’s not necessary to cite that source.

Divide the binomial by the monomial to find the quotient -36x^4y + 144x^2 y^6/ -4x^2y

How do epidemiologists play a role in the diagnosis, treatment, and prevention of chronic illnesses, such as cancer or heart disease?

Abraham lincoln authorized women to oversee which operations in military installations?

URGENT QUESTION!! Which process provides the energy used to make ATP from ADP? phosphorylation of ADP the assembly of energy-rich sugars the breakdown of

I need help badly please help. Which sentence contains an adjective? A. Tulips need spring rain. B. Tulips need rain in spring. C. In spring, tulips need rain.

The study of the interactions between organisms and their cells interrelationships with the physical environment is know as

It's cold outside and you begin to rub your hands together to get yourself warm. Starting with the chemical potential energy stored in your muscles, describe th