Chemistry: Specific Heat of Copper?

Question

Can anyone help me answer the following questions:
1. What physical properties, other than specific heat, could be used to help identify a metal as copper?
2. Why is water an excellent material to use in a calorimeter?
3.Calculate the specific heat of a metallic element if 313 joules of energy are needed to raise the temperature of a
50.0 g sample from 25.0°C to 50.0°C.
4. Propose a method for determining the specific heat, s, for a metal, like sodium, that reacts with water.

Thank you in advance.

Answer 1

You could use molar mass, or density to identify a metal.
Water is not acidic or basic, and has a high specific heat.
313=50*X*25, X=(313)/(50*25)
To find the specific heat of sodium, you could put a set amount of sodium into water, measure how much precipatate is in solution, measure the change in temperature, measure the mass of sodium, and solve accordingly.

Answer 2

Keith - that's been a real lengthy time period for me considering that chemistry... and that i'm, obviously, "winging" this: to strengthen the temperature of the 250 g of water by ability of 1ºC calls for 250 x 4.184 = a million,046 J. To get that a lot warmth out of 155g of Cu the copper can ought to cool (a million,046)/(.385 x one hundred and 55) = 17.53ºC the finest temperature... for sure... will be T. The copper cools 17.fifty 3 circumstances as a lot because the water warms the version between the nice and cozy copper and the cool water is, initially, one hundred thirty.2 C levels. i'm considering the temperature hollow final in increments of 18.fifty 3 C levels. it truly is because, for each 1º strengthen in water temp., there's a 17.53º shrink in the copper's temp... 18.53º closure. one hundred thirty.2/18.fifty 3 = 7.02. there'll be 7 of those 1º water temp. will strengthen; water temp. ends at 26.8º. enable's examine: If the copper cooled a finished of seven x 17.53º that's going to cool about 123.2º. that could want to have the copper end at one hundred and fifty - 123.2 = 26.8º sure! do not you basically like it at the same time as it truly works? Richard

Answer 3

if you had only asked number 2 youd be ok....


but gimme a break.
do your own work tonight