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
bixtya [17]
3 years ago
13

Determine the mass of water in kg, if 4300 cal of energy is placed in water, resulting in a temperature change to 101.0 oC from

92.5 oC.
Chemistry
1 answer:
Airida [17]3 years ago
6 0

Answer:

0.5059kg

Explanation:

The heat absorbed for the water is determined using the equation:7

Q = C×m×ΔT

<em>Where Q is heat absorbed (4300cal)</em>

<em>C is specific heat (1cal/g°C)</em>

<em>m is the mass in grams</em>

<em>ΔT is change in °C (101.0°C - 92.5°C = 8.5°C)</em>

<em />

Replacing:

4300cal = 1cal/g°C×m×8.5°C

505.9g = m

In kg, the mass of water is:

<h3>0.5059kg</h3>

<em />

You might be interested in
If a tablet of acetaminophen, C8H9NO2, weighs 324 mg, how many moles are there in the tablet? If a tablet of acetaminophen, C8H9
Gnoma [55]

Answer:

2.14*10^{-3} mol

Explanation:

number of moles of C8H9NO2 = \frac{mass}{molar mass}=\frac{324*10^{-3} g}{151.163g/mol}=2.14*10^{-3}mol

The trick is to remember to convert milligrams to grams because molar mass is normally presented in grams per mole

7 0
3 years ago
How many valence electrons do nitrogen atoms have
julsineya [31]
Five valence electrons for one nitrogen and 10 valence electrons for two nitrogens
4 0
3 years ago
Identify the number and kinds of atoms present in a molecule of each compound butane
ohaa [14]
The butane is a kind of alkane. And there is only carbon and hydrogen and single bonds. The formula of butane is C4H10. There are four carbon atoms and ten hydrogen atoms present in one butane molecule.
4 0
3 years ago
How many grams of sodium acetate are in solution in the third beaker?
Kipish [7]

Answer:

46g of sodium acetate.

Explanation:

The data is: <em>Precipitation from a supersaturated sodium acetate solution. The solution on the left was formed by dissolving 156g of the salt in 100 mL of water at 100°C and then slowly cooling it to 20°C. Because the solubility of sodium acetate in water at 20°C is 46g per 100mL of water, the solution is supersaturated. Addition of a sodium acetate crystal causes the excess solute to crystallize from solution.</em>

The third solution is the result of the equilibrium in the solution at 20°C. As the maximum quantity that water can dissolve of sodium acetate at this temperature is 46g per 100mL and the solution has 100mL <em>there are 46g of sodium acetate in solution. </em>The other sodium acetate precipitate because of decreasing of temperature.

I hope it helps!

6 0
3 years ago
What is advantage of using single fixed pulley although it doesnot multiply force?​
luda_lava [24]

A single fixed pulley is used to lift load by changing the direction of the lifting force. Even though a single fixed pulley has no mechanical gain in that, the effort applied is greater than the load, it is preferred in use since you do not have to pull or push the pulley up and down.

4 0
2 years ago
Read 2 more answers
Other questions:
  • At the equator Earth rotates with a velocity of about 465 m/s. What is this velocity in kilometers per day?
    15·1 answer
  • Meteors look like they have tails. Are they the same as comet tails?
    8·1 answer
  • Why does the ozone layer important to life on earth?
    12·1 answer
  • A solid is the only form of matter true or false
    14·2 answers
  • Did the addition of salt change a physical or chemical property of water?
    12·1 answer
  • Kinetic Energy Problems = KE = 0.5m x 12
    12·1 answer
  • Need help ASAP... The diagram shows a box in the periodic table.. what is the atomic number of the element??​
    8·1 answer
  • How does light travel?
    9·1 answer
  • Can someone please try to help me ​
    9·1 answer
  • Which element has a more protons in it Boron (B) or Neon (Ne)?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!