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
Roger believes that he is following a healthy regime by taking lots of vitamin E everyday. What property of vitamin E makes Roge
Zanzabum
If you are a plato user the answer is D. vitamin E is fat soluble
6 0
3 years ago
Read 2 more answers
If a question cannot be tested and observed, it cannot be answered with science. (2 points) True or False?
boyakko [2]

Answer:

True

Explanation:

If a question cannot be tested and observed, it cannot simply be answered by science.

Science works with observable and testable ideas and not on metaphysics.

  • Science presents a methodical approach into investigating phenomenon and answering likely questions in a logical manner.
  • The body of facts and data gathered through observations and tests are used to ramify the conclusion of a scientific study.
  • Without such, it is impossible to do the work of science.
3 0
3 years ago
Can u pls help me with this question ​
lorasvet [3.4K]

Answer:

b i im pretty sure or a

Explanation:

f y bib0f84f69g85

8 0
3 years ago
Construct an explanation using Newton's Laws of Motion to describe the effects of balanced and unbalanced forces on the motion o
julsineya [31]

Answer:

The manner in which objects will move is determined by the answer to this question. Unbalanced forces will cause objects to change their state of motion

Explanation:

Since these two forces are of equal magnitude and in opposite directions, they balance each other.

7 0
3 years ago
Read 2 more answers
A sample of nitrogen gas has a mass of 48.6 grams. How many N2 molecules are there in the sample? molecules Submit Answer &
marysya [2.9K]

Answer:

There are 1.05  x 10²⁴ molecules in 48.6 g N₂

Explanation:

1 mol of N₂ has a mass of (14 g * 2) 28 g.

Then, 48.6 g of N₂ will be equal to (48.6 g *(1 mol/ 28 g)) 1.74 mol.

Since there are 6.022 x 10²³ molecules in 1 mol N₂, there will be

(1.74 mol *( 6.022 x 10²³ / 1 mol)) 1.05  x 10²⁴ molecules in 1.74 mol N₂ (or 48. 6 g N₂).

6 0
3 years ago
Other questions:
  • Consider the reaction of zinc metal with hydrochloric acid.
    9·1 answer
  • Julia wants to find out which color fabric will heat up the fastest when put under a direct light.
    11·2 answers
  • The density of a gas is measured at 1.653 g/L at 746 mmHg and 25.0 °C. What is its molar mass?
    7·2 answers
  • Are all physical reactions reversible?
    6·1 answer
  • Why does the flask have to be closed during the water and alka seltzer reaction?
    12·1 answer
  • Convert 2.8 pounds to kg
    10·2 answers
  • How has our society being developed six point.​
    11·1 answer
  • Nuclear energy, energy is inside what
    5·1 answer
  • Tom pushes on a 50-kilogram box with a force of 25 newtons. Assuming the surface on which the box moves is frictionless, at what
    11·1 answer
  • Determine the mass in grams of each element.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!