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
tresset_1 [31]
3 years ago
10

Using the formula velocity = distance/time, how fast does sound travel in air at 20 degrees C given a distance of 500 m and 3.92

seconds.
A- 3.92
B- 127 m/s
C- 2,941 m/s
D- 746 m/s
Chemistry
1 answer:
mixas84 [53]3 years ago
5 0

Answer:

B : 127m/s

Explanation:

= 500 ÷ 3.92

= 127.5

You might be interested in
Besides glycerol what 3 other molecules make up a triglyceride?
ICE Princess25 [194]
Triglyceride is a molecule constituted by one one molecule of glycerol and 3 molecules of fatty acids. The structure of a glycerol is like a letter "E", where the vertical line ( | ) is the glycerol and the three horizontal lines are long chains of organic acids, each with one COOH group, called fatty acids.<span> The answer is that the other 3 molecules that make up a triglyceride are fatty acids.</span>
6 0
2 years ago
At what temperature do KCl and NaCl have the same solubility?
Serhud [2]

Answer:

they have the same molar solubility at 44.5 degrees celsius

5 0
2 years ago
Please Help !! Brainliest !! ​
Rufina [12.5K]
Answer:

Data supports significantly because we can use the testing(depending sample) before and after we use the same object to test the hypothesis.
5 0
3 years ago
This is the chemical formula for Chormium (III) nitrate Cr(NO3)3Calculate the mass percent of nitrogen in chromium(III) nitrate.
butalik [34]

Answer:

The percent composition for nitrogen in chromium(III) nitrate is 6%.

Explanation:

6 0
3 years ago
What is the change in energy of a gas at a pressure of 105 kPa, if 245 J of energy is added causing a change in volume from 25.3
Ahat [919]

Answer:

-1151.5 J

Explanation:

Given that:

The supplies energy = 245 L

The energy used in the expansion of gas = Pressure ×ΔV (change in volume)

At standard conditions;

Pressure = 105 × 10³ Pa

energy used in the expansion = 105 × 10³ Pa × (38.6 - 25.3)L

= 1396.5 J

Thus, the change in the energy of gas = 245 - 1396.5 J

= -1151.5 J

Hence, we can conclude that the gas has lost its own energy in the process of expansion.

7 0
2 years ago
Other questions:
  • Extra Practice...<br> 1) What is the speed of light?
    10·1 answer
  • A gas at 325 k has a volume of 4.0 L. If the gas’s volume changes to 2.0 L at constant pressure, what will be the new temperatur
    5·2 answers
  • What is the mass of one mole of calcium carbonate
    5·2 answers
  • Match the term to the correct definition.
    15·2 answers
  • In 2011, the number of transplants in the United States was 26,745, and the number of donors was 14,146. What is most likely the
    15·2 answers
  • 8. An experiment requires a solution that is 80%
    6·1 answer
  • a chemistry teacher adds 50.0 ml of 1.50 m h2so4 solution to 200 ml of water. What is the concentration of the final solution?
    7·1 answer
  • How many moles are in 55 g or NaCk
    15·1 answer
  • What is the mass of one gram of calcium?
    13·1 answer
  • Which one of the following is not equal to 100 meters? 10,000 centimeters 10 hectometers 100,000 millimeters 0.100 kilometers
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!