1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Elis [28]
3 years ago
15

A 62.6-gram piece of heated limestone is placed into 75.0 grams of water at 23.1°C. The limestone and the water come to a final

temperature of 51.9°C. The specific heat capacity of water is 4.186 joules/gram degree Celsius, and the specific heat capacity of limestone is 0.921 joules/gram degree Celsius. What was the initial temperature of the limestone? Express your answer to three significant figures
Chemistry
1 answer:
VMariaS [17]3 years ago
7 0
M₁ = mass of water = 75 g
T₁ = initial temperature of water = 23.1 °C
c₁ = specific heat of water = 4.186 J/g°C

m₂ = mass of limestone = 62.6 g
T₂ = initial temperature of limestone = ?
c₂ = specific heat of limestone = 0.921 J/g°C

T = equilibrium temperature = 51.9 °C
using conservation of heat
Heat lost by limestone = heat gained by water
m₂c₂(T₂ - T) = m₁c₁(T - T₁)
inserting the values
(62.6) (0.921) (T₂ - 51.9) = (75) (4.186) (51.9 - 23.1)
T₂ = 208.73 °C
in three significant figures
T₂ = 209 °C
You might be interested in
In an atom the number of electron is what as the number of protons???​
nydimaria [60]
The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons.
7 0
2 years ago
How many moles of BCl3 are needed to produce 10.0 g of HCl(aq) in the following reaction? (HCl molar mass is 36.46 g/mol).
Scilla [17]

Answer:

Moles of BCl₃ needed = 0.089 mol

Explanation:

Given data:

Moles of BCl₃ needed = ?

Mass of HCl produced = 10.0 g

Solution:

Chemical equation:

BCl₃ + 3H₂O  →     3HCl + B(OH)₃

Number of moles of HCl:

Number of moles = mass/molar mass

Number of moles = 10.0 g/ 36.46 g/mol

Number of moles = 0.27 mol

Now we will compare the moles of HCl with BCl₃.

               HCl             :           BCl₃

                 3               :             1

             0.27             :            1/3×0.27 = 0.089 mol

6 0
2 years ago
Is the following nuclear equation balanced? 214 82pb 4 2He 210 80 yes or no​
Verizon [17]

Answer:

no

Explanation:

I think it is no because I like the word no it has a very nice ring to it and it is fun to say I say it a lot and it is just very very fun that is my brilliant explanation for you . goodbye.

8 0
3 years ago
Find the product of (x+a)(x-a)​
musickatia [10]

Answer:

x^2 - a^2

Explanation:

5 0
2 years ago
How does rhyolite form
Ivan
Geology - rocks and minerals. Rhyolite is a felsic extrusive rock. Due to the high silica content, rhyolite lava is very viscous. It flows slowly, like tooth paste squeezed out of a tube, and tends to pile up and form lava domes.
5 0
3 years ago
Other questions:
  • Equatio of table perparing for long trip​
    9·1 answer
  • Why is it important for an engineer who is designing a new home-cooling/heating system to have knowledge about the transfer of h
    7·1 answer
  • What is the ratio of molecules in the chemical equation below N2+3N2-> 2NH3
    14·1 answer
  • Elements are one type of pure substance. In an element, every atom is the same as every other atom. It
    8·1 answer
  • Is sulfur is a non metal
    10·2 answers
  • A sample of oxygen gas occupies a volume of 250 mL at .8 atm of pressure. What volume will it occupy at 1.2 atm of pressure?
    14·1 answer
  • How many moles of water are produced when 2 moles of NaHCO3 react with 2 moles of HCI?
    12·1 answer
  • If 2 moles of salt is dissolved to form 1 liter of solution, what is the molarity of the solution?
    5·1 answer
  • Snap me r.alivia05 also no creepy old men, just nice females
    13·2 answers
  • Atoms of two different elements react with each other when they have?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!