A 1.41-9 sample of a pure substance is heated with 111 J of energy and its temperature changes from 18.8 °C to 51.0 °C. What is the specific heat of this substance?
A)
0.710 J/g.°C
B)
2.44 J/g.°c
C)
0.140 J/g.°c
D)
0.240 J/g.°C

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule

Afusion reaction takes place between carbon and another element. neutrons are released, and a different element is formed. the different element is a) lighter than helium. b)heavier than helium. c)the same weight as helium. d)dependent on the element that reacted with carbon.