Seudónimo Seudónimo

18-07-2018
Chemistry

contestada

how many kilojoules of energy are necessary to raise the temperature of 3 kilograms of cast iron from 30 degrees Celsius to 120 degrees Celsius?

Respuesta :

ralphwx1 ralphwx1

18-07-2018

Specific heat of cast iron is 0.46 kJ / kg K.

Energy change = 0.46 kJ / kg K * 3 kg * (120 - 30) K = 124.2 kJ

Answer Link

Otras preguntas

Each week when Kara goes grocery shopping the purchase g gallons of milk and e cartons of eggs. Which expression illustrates the amount of milk and eggs she has

A building where goods are manufactured is called a? A.) tenement B.) laboratory C.) factory

Need help Math 8 lesson 10.4 . I know that i have to keep the base and that the top turns into a one.

_____________ can occur when soil becomes less fertile, because a farmer plants the same crops in a field every year causing too much nutrient absorption. Land

The Red Cross was the main way that members of which of these groups served in Europe during World War I? women in the United States African Americans Germa

Which leader made the phrase black power popular in the mid-1960s?

Jane is at the stage of her life in which she is interested in female friends and playing soccer. she also has taken interest in her science class because she t

In this excerpt from Lord Byron's "She Walks in Beauty," which two sets of lines show that Byron's subject is rich in kindness and grace? She walks in beauty, l

Tony sometimes seems very "wound up." at those times, he seems full of energy, talks very rapidly, and makes very grandiose plans. (one time, he gave away all o

A new club sent out 315 coupons to boost sales for next year's memberships. They provided 6 times as many to potential members than to existing members. How man