brendonmx8892 brendonmx8892

18-05-2018
Chemistry

contestada

If 89.6 joules of heat are needed to heat 20 g of iron from 30 c to 40 c, what is the specific heat of the iron in j/cg

Respuesta :

mkryukova19 mkryukova19

18-05-2018

Q=cmΔt

Q=89.6 J
m=20g
Δt=t(final)-t(initial)=40-30=10⁰ C

89.6 J=c*20g*10⁰ C

c= 89.6 J/(20g*10⁰ C)=0.448 J/(g*⁰C)

Answer Link

Otras preguntas

In peas, yellow seed color (Y) is dominant to green seed color (y). A homozygous green pea plant is crossed with a heterozygous yellow pea plant. What is the pr

which of the following transformations does not preserve distance and angle measures? A .translation B.reflection C.rotation D.horizontal stretch?

If a word is capitalized in the middle of a properly written sentence , chances are the word is

Which sentence has a transitive verb? A. The entire crew of the ship survived without injury. B. Our tour guide spoke clearly and amusingly. C. In ancient t

Assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of $2,175 per hour and a standard deviation of $2

A bakery sends 4 carton of rolls . Each carton contains 6 box's holding 12 rolls each. The store divides the rolls into 8 in each bag. How many bags of rolls ar

A bakery sends 4 carton of rolls . Each carton contains 6 box's holding 12 rolls each. The store divides the rolls into 8 in each bag. How many bags of rolls ar

(6x) to the power of the second

Which electron configuration represents the electrons in an atom of Ga in an excited state?

Which of the following describes an evaluative conclusion? A.repeats the main points in the essay B.provides a summary of the main points C.discusses the import