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Bond [772]
3 years ago
11

Calculate the specific heat capacity of a piece of ice if 1.30 kg of the wood absorbs 6.75×104 joules of heat, and its temperatu

re changes from 32 ºC to 57 ºC.
Chemistry
2 answers:
spayn [35]3 years ago
8 0

Answer:

1.8  J/ g ∘ C

Explanation:

A substance's specific heat tells you how much heat much either be added or removed from  1 g  of that substance in order to cause a  1 ∘ C  change in temperature.

The equation that establishes a relationship between specific heat, heat added or removed.

Lunna [17]3 years ago
5 0

Answer:

2076.9 J/kg°C

Explanation:

The equation needed here is:

q=mC(T_f-T_i) , where q is the energy in Joules, m is the mass in kg, C is the heat capacity, T_f is the final temperature, and T_i is the initial temperature.

Here, we have q = 6.75*10^4 J, m = 1.30kg, T_f = 57, and T_i = 32. So:

6.75*10^4=1.30*C*(57-32)

Solving for C, we get:

C = 2076.9 J/kg°C

Hope this helps!

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One difference is that some animals are polyp and some are medusa.


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5 0
2 years ago
Circle the odd one out and give reason of your choices <br>copper <br>iron <br>pencil <br>rubber​
Ivanshal [37]
Rubber.

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3 0
3 years ago
In a single displacement reaction between Sodium Phosphate and Barium, how much of each product (in grams) will be formed from 1
mixer [17]

Answer:

14.6 g of barium phosphate

3.35 g of sodium metal

Explanation:

2Na3PO4(aq) + 3Ba(s) -------> Ba3(PO4)2(aq) + 6Na(s)

The first step in any such reaction is to but down the balanced reaction equation according to the stoichiometry of the reaction.

The two products formed are barium phosphate and sodium metal.

Number of moles of barium corresponding to 10.0g of barium = mass of barium/ molar mass of barium

Molar mass of barium = 137.327 g

Number of moles of barium = 10/137.327

Number of moles of barium = 0.0728 moles

For barium phosphate;

3 moles of barium yields 1 mole of barium phosphate

0.0728 moles yields 0.0728 moles × 1/3 = 0.0243 moles of barium phosphate

Molar mass of barium phosphate = 601.93 g/mol

Therefore mass of barium phosphate = 0.0243 moles × 601.93 g/mol = 14.6 g of barium phosphate

For sodium metal

3 moles of barium yields 6 moles of sodium metal

0.0728 moles of barium yields 0.0728 × 6 / 3 = 0.1456 moles of sodium

Molar mass of sodium metal= 23 gmol-1

Mass of sodium metal= 0.1456g × 23 gmol-1 = 3.35 g of sodium metal

4 0
3 years ago
How many moles is 3.85 x 1025 atoms of gold?
IrinaK [193]

Answer:

64.17 Moles of Au

Explanation:

(atoms and particles are the same)

3.85 x 10 ^25 x (1 mol              

                         /6.02 x 10^23)

3.85 / 6 = .64166

.6416 x 10^2 = 64.166

If you round up the answer you will get 64.17

64.17  moles of Au

4 0
2 years ago
Read 2 more answers
How many mold are in 4.25x10^-2 atoms of lead
Shalnov [3]
I’m sorry I have no clue
7 0
3 years ago
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