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
Brrunno [24]
3 years ago
15

Your teacher gives you 30 mL of vinegar and one gram of baking soda and tells you to find evidence that the law of conservation

of mass is correct. Design an experiment to find this evidence and state your expected results.
Physics
1 answer:
n200080 [17]3 years ago
6 0
The Law of conservation states that mass nothing can be created nor destroyed by chemical means.
<span>
You can make a rocket bottle, it shows the a chemical reaction.

</span>baking soda<span> acts as a base, while vinegar an acid. </span><span>The reaction releases gas and it makes carbon </span><span>dioxide

The result is easy even though the substance is mixed, nothing new was created, the formula would be a combination of two substances not a new product. Nothing was destroyed either, therefore it follows the law.</span>
You might be interested in
As a mercury atom absorbs a photon of
Allisa [31]
The energy absorbed by photon is 1.24 eV.
This is the perfect answer.
8 0
3 years ago
Describe 2 ways you could increase the efficiency of a household central heating system
chubhunter [2.5K]

Answer:

Arrange an annual service. Treat your boiler like your car. ...

Keep your boiler clean. ...

Bleed your radiators. ...

Top up the pressure. ...

Use a Powerflush. ...

Insulate your pipes. ...

Turn the heating on. ...

If all else fails…

Explanation:

6 0
3 years ago
The first law of thermodynamics relates the heat transfer into or out of a system to the change of internal and the work done on
Artyom0805 [142]

Answer:

The heat transferred into the system is 183.5 J.

Explanation:

The first law of thermodynamics relates the heat transfer into or out of a system to the change of internal and the work done on the system, through the following equations.

ΔU = Q - W

where;

ΔU  is the change in internal energy

Q is the heat transfer into the system

W is the work done by the system

Given;

ΔU = 155 J

W = 28.5 J

Q = ?

155 = Q - 28.5

Q = 155 + 28.5

Q = 183.5 J

Therefore, the heat transferred into the system is 183.5 J.

4 0
3 years ago
A hiker determines the length of a lake by listening for the echo of her shout reflected by a cliff at the far end of the lake.
ArbitrLikvidat [17]

Answer:

L = 499 m

Explanation:

  • If we assume that the speed of sound is constant, that travels along a straight line, and that the echo is instantaneous, we can find the total distance travelled by the sound, as follows, just applying the definition of average velocity:

       \Delta x = v_{s} * t = 343 m/s* 2.91 s = 998 m

  • If we assume that the time needed to reach to the cliff, is the same used for the return travel, the length of the lake will be exactly half of the total distance calculated:

        l_{lake} = \frac{\Delta x}{2} = \frac{998m}{2} = 499 m

  • The length of the lake is 499 m.
8 0
3 years ago
How would you define physics class in your own words ?
Andrei [34K]

Answer:

honestly i dont like physics class but for you im gonna write somethin' good but for me tho its B O R I N G

Explanation:

<em>Physics is the branch of science that deals with the structure of matter and how the fundamental constituents of the universe interact. It studies objects ranging from the very small using quantum mechanics to the entire universe using general relativity.</em>

3 0
3 years ago
Other questions:
  • A circuit has a resistance of 10ohmsband a current of 42 amps.caculate the voltage
    15·1 answer
  • 1 . A farmer moves along the boundary of his rectangular field of side 10m x 20m . farmer covers 1m in 1sec . what will be the m
    8·1 answer
  • There are four charges, each with a magnitude of 2.06 µC. Two are positive and two are negative. The charges are fixed to the co
    9·1 answer
  • A resistor of 5 Ω is placed in a circuit. The voltage drop across the resistor is 12 V. What is the current through the resistor
    12·1 answer
  • The first step in the sewage-treatment process is _____.
    5·2 answers
  • A loop with a break in it that prevents current form flowing is called a(n) blank circuit
    14·1 answer
  • Common transparent tape becomes charged when pulled from a dispenser. If one piece is placed above another, the repulsice force
    12·1 answer
  • What does pe really mean
    9·2 answers
  • You start driving your car when the air temperature is 270.734 K. The air pressure in the tires is 454.518 kPa. After driving a
    11·1 answer
  • Which statements about cells are true? (Select all that apply)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!