3.5 kJ of heat are added to a 28.2 g sample of iron at 20 C(degree celcius). What is the final temperature of the iron in kelvins?
When my teacher converted 3.5kJ to J, he got 3500J. I thought kilo was bigger??? Shouldn't it be .0035J?
2007-04-08 20:11:49 · 4 answers · asked by Philip C 1 in Science & Mathematics ➔ Chemistry
kilo means thousand
3.5 kJ = 3.5 x 1,000 J = 3,500 J
2007-04-08 20:17:25 · answer #1 · answered by novangelis 7 · 0⤊ 0⤋
Yes you are both right, kilo is bigger ... therefore to get an equivalent amount in Joules, you need 1000-J to equal 1-kJ because it is bigger and you need one thousand smaller units to equal the same amount.
2007-04-09 04:59:21 · answer #2 · answered by Anonymous · 0⤊ 0⤋
1kj = 1000j.
ur teacher is right.
3.5kj = 3.5 x 1000
= 3500j
2007-04-09 03:45:05 · answer #3 · answered by yemisi 2 · 0⤊ 0⤋
Your teacher is right, 1kJ = 1000J. Just like 1km = 1000m.
2007-04-09 03:35:19 · answer #4 · answered by gp4rts 7 · 0⤊ 0⤋