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Sati [7]
3 years ago
8

How does the law of conservation of mass apply to chemical changes?

Physics
2 answers:
Paha777 [63]3 years ago
8 0
Matter cannot be created or destroyed, all of the atoms that are present in the reactants must show up as products
Zielflug [23.3K]3 years ago
5 0

Answer:

The Law of Conservation of Mass states that matter cannot be created nor destroyed. It can only be transformed from one state or substance to another. This means that this law applies to both physical and chemical changes. In physical changes, the substance before and after the phase change still has the same mass.

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You drive a car 1500 ft to the east, then 2500 ft to the north. if the trip took 3.0 minutes, what were the direction and magnit
Lelu [443]

The velocity of the car was 4.93m/s and the direction was northeast.

<h3>Calculation</h3>

It is given,

time of the trip = t = 3 minutes = 180 seconds

1st distance A = 1500ft = 457.2m east

2nd distance B = 2500ft = 762m north

We are asked to find the average velocity.

First, we get the resultant distance magnitude by applying Pythagoras theorem to find the hypotenuse.

A^{2} + B^{2} =C^{2} \\C=\sqrt[]{A^{2} +B^{2} } \\C=\sqrt{457.2^{2} +762^{2} } \\C=  888.63m

Then we have

Velocity = Distance/time

Velocity = 888.63/180

Velocity = 4.93 m/s

Then the direction is northeast.

To know more about Pythagoras theorem, visit:

brainly.com/question/343682

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6 0
2 years ago
The solubility of a gas is .55 g/l at 8.0 atm pressure. what will be the solubility of the gas at 5.0 atm partial pressure?
garik1379 [7]
Henry's law states that:

P1/C1 = P2/C2

Where P = Pressure, and C = Solubility
In this case, P1 = 8.0 atm, C1 = 0.55 g/l, P2 = 5.0 atm, C2 =??

Therefore,
C2 = (P2*C1)/P1 = (5*0.55)/8 = 0.344 g/l
8 0
3 years ago
Science: Look at the image and answer the question correctly.
Flauer [41]
I believe it is D I’m sorry if it’s wrong
4 0
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A car travels at a velocity of 8m/s for 16s . How far did it travel?
sertanlavr [38]

Answer:128m

Explanation:

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R=V/I
R=78/8
R=9.75 ohms
3 0
3 years ago
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