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KiRa [710]
3 years ago
7

Using the Erlenmeyer flask and its contents from part A, continue with

Chemistry
2 answers:
dangina [55]3 years ago
8 0

Answer:

negative is it can't be broken down and makes the air polluted. Positive, it can be re used again and again.

Explanation: here is you answer please rate me the most brainlest

Anestetic [448]3 years ago
5 0
It’s b for sure that’s the answer
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For water to change from a liquid to solid, thermal energy needs to be <br><br> .
telo118 [61]

answer: dispersed from the liquid so cold air can take its place

6 0
3 years ago
A block of substance has a width of 3.8 cm, a length of 8.2 cm, and height of 7 cm . Its mass is 0.68 kg. Calculate the density
satela [25.4K]

Answer:

d = 3.11 g /cm³

Explanation:

Volume -

The volume of a cuboidal object can be calculated by multiplying the length , width and height ,

Hence , Volume ( V ) = l * w * h ,

From the question ,

l = 8.2 cm

w = 3.8 cm

h = 7 cm

Hence, the volume is ,

V = l * w * h

V = 8.2 cm * 3.8 cm * 7 cm

V = 218.12 cm³

Density -

Density of a substance is given as the mass divided by the volume ,

Hence,

d = m / V

From the question,

m = 0.68 kg

since ,

1 kg = 1000g

m = 0.68 * 1000 = 680 g

V = 218.12 cm³ ( calculated above )

Hence , the value of density can be calculated by using the above equation,

d = m / V

d = 680 g / 218.12 cm³

d = 3.11 g /cm³

8 0
3 years ago
Concept map of MATTER - can be a substance- can be a
frez [133]

Substance - Elements and Compounds

Example of element is oxygen and that of compound is water.

Matter can be classified into mixture.

It can be heterogeneous and homogenous.

Example of heterogeneous mixture is milk.

Example of homogeneous mixture is air.

Please mark me Brainliest

3 0
3 years ago
The table above shows data collected on five apples while doing field research outside the laboratory. What type of lab equipmen
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D a gram scale would measure grams
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A teacher is discussing several scenarios in the topic of gas law s. Which of the following scenarios will the initial pressure
sukhopar [10]

The scenario whereby the initial pressure is equal to the final pressure is : ( A ) A balloon filled with air is heated from 300k to 600k, causing it to expand and double in size.

<h3>Gay Lussac's law </h3>

Gay Lussac's law states that at constant pressure, the volume of gas is directly proportional to the change in temperature. i.e. V ∝ T. From scenario 1 the change in temperature from 300 K to 600 K shows a 100% increase in temperature which corresponds with the expansion and size doubling of the volume of gas.

Hence we can conclude that The scenario whereby the initial pressure is equal to the final pressure is : ( A ) A balloon filled with air is heated from 300k to 600k, causing it to expand and double in size.

Learn more about Gay Lussac's law : brainly.com/question/24691513

8 0
2 years ago
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