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3 years ago

Hello guys i wanted to ask if anyone could check my answers please :) 10 points

2 answers:

7 0

The first answer is C, condensation is a physical process and the others are chemical.

The second answer is B, it doesn't change depending on location (the answer you chose)

The third answer is A.

The fourth answer is B. Temperature is an intensive property.

No explanations for the ones you got correct.

natta225 [31]3 years ago

3 0

Answer:

1) Water vapor condenses to form water droplets: a physical process.

2) It is proportional to its weight.

3) Gas

4) 115.2 °C since melting point is an intensive property

Explanation:

1) rusting of metals involves oxidation which is a chemical process

hydrogen and oxygen undergoes chemical reaction to give water

If a candy is dropped in water and releases gas then there must be some reaction going on,

thus out of the four changes, condensation of water is a physical process.

So correct answer is

Water vapor condenses to form water droplets: a physical process.

2) Mass is independent of location, It will be the same on earth or on moon,Its weight which changes with locations.

Thus the correct answer is mass is proportional to weight.

3) gas particles are neutral and they bounce off on another as they collide. the gas particles are in random motion due to high thermal energy and low intermolecular forces of attractions.

4) The intensive properties does not depend upon the mass or amount of a substance. Melting point is an intensive property and will be the same for any amount of a given substance.

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Need help !!!!! ASAP

Nat2105 [25]

<h2>Hello!</h2>

The answer is:

The temperature will be the same, 37°C.

Since from the statemet we know the first temperature, pressure and volumen of a gas, and we need to calculate the new temperature after the pressure and the volume changed, we need to use the Combined Gas Law.

The Combined Gas Law establishes a relationship between the temperature, the pressure and the volume of an ideal gas using Boyle's Law, Gay-Lussac's Law and Charles's Law.

The law establishes the following equation:

$\frac{P_{1}V{1}}{T_{1}}=\frac{P_{2}V{2}}{T_{2}}$

Where,

$P_{1}$ is the first pressure.

$V_{1}$ is the first volume.

$T_{1}$ is the first temperature.

$P_{2}$ is the second pressure.

$V_{2}$ is the second volume.

$T_{2}$ is the second temperature.

Then, we are given the following information:

$V_{1}=200mL\\P_{1}=4atm\\T_{1}=37\°C\\V_{2}=400mL\\P_{2}=2atm$

So, isolating the new temperature and substituting the given information, we have:

$\frac{P_{1}V{1}}{T_{1}}=\frac{P_{2}V{2}}{T_{2}}\\\\T_{2}=P_{2}V{2}*\frac{T_{1}}{P_{1}V_{1}} \\\\T_{2}=2atm*400mL*\frac{37\°C}{4atm*200mL}=37\°C$

Hence, we have that the temperature will not change because both pressure and volume decreased and increased proportionally, creating the same relationship that we had before the experiment started.

The temperature will be the same, 37°C

Have a nice day!

4 0

3 years ago

How can farming affect the ecosystem?

Bezzdna [24]

The Correct Answer Is/ Runoff often carries pesticides from farmers' fields that can damage aquatic ecosystems.

8 0

4 years ago

Laurie is moving a dresser with a mass of 250kg. She does 126 J of work with a force of 14 N. How far does she move the dresser?

babunello [35]

9m is the answer to your question

7 0

3 years ago

A peach falls from a tree with an acceleration of 9.8 m/s2. The peach has a mass of

svlad2 [7]

Answer:

F = 0.0725 N

Explanation:

Given that,

The mass of peach, m = 7.4 g

We need to find the force acts on the peach when it falls from a tree. The force is given by :

F = mg

So,

$F=7.4\times 10^{-3}\times 9.8\\\\F=0.0725\ N$

So, the force is 0.0725 N.

5 0

3 years ago

How do i balance C6H12O6+O2 > H2O+CO2

xenn [34]

Answer:

C6H12O6+6O2

Explanation:

c=6

H=12

O=6+2=8

C=1*6=6

H=2*6=12

O=2+1=3-->O=6(2)+6=18

6+?=18

?=12

5 0

3 years ago