Friday
April 29, 2016

# Homework Help: science

Posted by k on Wednesday, May 9, 2007 at 6:52pm.

The specific heat capacity of the lava is 1600 J kg -1 degrees Celsius -1 .
When all the erupted lava cools from the eruption temperature of 1050 degrees Celsius to 15 degrees Celsius, the heat released is 2 x 10 15 J.
Calculate a value for the total mass of lava that erupted. Give your answer in scientific notation.
The equation for this is q =cm deltaTem
q = heat transferred
c= specific heat
m = mass
delta temperature = change in temperature

2 x 1015 = 1600 x (1050-15) x m

M = 2x 1015 = 1207729469g
1600 x 1035

can sum1 help me is this correct??

the 2 x 10 is meant to be 2 x 10 ^ 15 likewise same for the rest of 2 x 1015

TRANSPOSE THE EQUATION FOR MASS.PLUG NUMBERS IN AND GIVE ANSWER TO *ONE* SIG FIG USING SCIENTIFIC NOTATION.

this is part of an OU exam question if copied directly it is classed as plagarism thius is is being monitored by the ou

dont copy directly it is a form of cheating & not worth failing an exam over it