You are worried that a solid substance has dissolved in a beaker of water in a lab. What would be a way to separate the substance from the water?A. Boil the water away, leaving the substance behind in the beaker.
B. Pass the solution through a filter to let the dissolved substance separate.
C. Use a magnet to draw out the solid substance from the water.
D. Pour the liquid along a rough surface that would catch the solid particles but not the water.

Answers

Answer 1

Answer:

Boiling the water away, leaving the substance behind in the beaker is the way to separate the mixture. The correct option is A.

What is a mixture?

A mixture is basically a substances comprised of two or many distinct chemical substances which are indeed not linked covalently.

A mixture is the usually physicalcombination of two or more substances that retain their identities as well as are mixed in the way to form solutions, suspensions, along with colloids.

When two or more distinct substances are physically combined, a mixture is formed that can be distinguished back into its original substances.

When two or more substances combine to form a new substance that cannot be separated back into its original substances, a chemical reaction occurs.

The mixture can be separated by boiling the water away and leaving the substance in the beaker.

Thus, the correct option is A.

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Answer 2

Answer:

Answer:

I think the answer is a because boiling water cleans it

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What are density conversions

How dense the medium is in the compression part of the wave, and how

Answers

How dense the medium is in the compression part of the wave and how rare the medium is in the rarefaction part of the wave is a measure of the longitudinal wave's amplitude.

I need these ASAP Thank you c:1) The outer electrons in an element are referred to as _____.
A) valence electrons
B) ground state electrons
C) excited electrons
D) none of the above

2)In an exothermic reaction, the products have _____.
A) more energy than the reactants
B) less energy than the reactants
C) the same amount of energy as the reactants

3)A static charge is different from an electric current, in that a static charge _____.
A) is a flow of electrons
B) lasts only for a fraction of a second
C) occurs because a force is exerted on the electrons
D) involves the movement of ions as well as electrons

4)The time that it takes for a wave to travel one wavelength is considered a(n) _____.
A) period
B) velocity
C) amplitude
D) rarefaction

(This is for Integrated Physics and Chemisty)

Answers

Answer:

A) valence electrons

Explanation:

outer shell electrons used to participate in formation of bonding because when two atoms comes close to each other then these outer shell electrons interact with each other and hence bond will form between the atoms.

So correct answer will be

A) Valence Electrons

Answer:

More energy than reactants

Explanation:

Here products will have more energy than reactants due to which overall the energy is released and hence we get some energy along with the products in such type of reactions.

Answer:

C) occurs because a force is exerted on the electrons

Explanation:

Static charge will remains at rest because of the the force that makes them in stationary condition.

Answer:

A) Period

Explanation:

One time period is the total time for which a one complete wavelength distance is traveled by the wave.

1. A) Valence electrons
2.B) less energy than the reactants
3.C) occurs because there is a force exerted on the ions
4.A) period

What is the average speed in miles per hour of the car that traveled a total of 200 miles in 5.5 hours

Answers

Answer:

Average speed of the car is 36.36 miles per hour

Explanation:

It is given that,

Total distance traveled by the car, d = 200 miles

Total time taken, t = 5.5 hours

In this case, we have to find the average speed of the car. Average speed of the car is defined as the total distance divided by total time taken. Mathematically, it can be written as :

$s=(d)/(t)$

$s=(200\ miles)/(5.5\ hours)$

s = 36.36 miles per hour

Hence, the average speed of the car is 36.36 miles per hour.

Select all that apply.A longitudinal wave is characterized by _____.
peaks compressions dips rarefactions

Answers

A longitudinal wave ischaracterized by rarefactions. A longitudinal wave is a wave motion wherein theparticles in the wave medium are displaced parallel to the advancing wave. When motionis detected from the source, the particle next to it vibrates from its rest positionand a progressive change in phase vibration is observed at each particle withinthat wave. The result is that the energy is transported from one region to theother. These combined motions result in the movement of alternating regions of rarefactionin the direction of transport of energy.

It's characterized by both compression and rarefaction.

(the compression in front of the waves induces a rarefaction behind the wave)

What happens as a result of an increase in the intensity of a sound wave? -the frequency of a soundwave increases. -the velocity of the sound wave decreases. -the energy of the soundwave increases. -the amplitude of the soundwave decreases

Answers

As a result of an increase in the intensity of a sound wave, the energy of the sound wave increases!

Answer: c. The energy of the sound wave increases.

Explanation:

At a temperature of 320K, the gas in a cylinder has a volume of 40.0 liters. If the volume of the gas is decreased to 20.0 liters, what must the temperature be for the gas pressure to remain constant?A. 160 K
B. 273 K
C. 560 K
D. 140 K

Answers

Assuming the gas behaves ideally,
PV/T = constant. P will also be constant in this giving us:
V₁/T₁ = V₂/T₂
40/320 = 20/T₂
T₂ = 160 K
The answer is A.

Answer:

The correct answer is option A.

Explanation:

Initial volume of the gas $V_1= 40.0L$