Change Worksheet
answer the following questions.
The graph was drawn from data collected as a substance was heated at a constant rate. Use the graph to
180
160
Phase Change Diagrarn
140
120
Temperature (°C)
100
D
B
स
80
60
40
2
4
6
8
16
18
20
22
10 12 14
Tim e (minutes)
At point A, the beginning of observations, the substance exists in a solid state. Material in this phase has
Deontz_ volume and __ha2_shape. With each passing minute,
is added to the
substance. This causes the molecules of the substance to me more rapidly which we detect by a
t2 Maturise in the substance. At point B, the temperature of the substance is __°C. The solid
begins to_A
At point C, the substance is completely or in a mate state.
Material in this phase has_Det volume and
shape. The energy put to the substance
between minutes 5 and 9 was used to convert the substance from a 3D
This heat energy is called the latent heat of fusion. (An interesting fact.)
to a
to a
Between 9 and 13 minutes, the added energy increases the du of the substance. During the
time from point D to point E, the liquid is
By point E, the substance is completely in the
phase. Material in this phase has
volume and
shape. The energy put to the substance between minutes 13 and 18 converted the substance from a
state. This heat energy is called the latent heat of vaporization. (An
interesting fact.) Beyond point E, the substance is still in the
phase, but the molecules
are moving
as indicated by
the increasing temperature,
Substance Melting point Boiling point
Bolognium
20°C
100 °C
Which of these three substances was likely used in this
Unobtainium
40°C
140 °C
phase change experiment?
Foosium
70 °C
140°C
ONUS: For water, the value for the latent heat of vaporization is 6.8 times greater than the latent heat of fusion. Imagine we were
ding heat at a constant rate to a block of ice in a beaker on a hot plate, and it took 4 minutes for the ice to melt completely. How
uld it take, after the water started boiling, for the beaker to be completely empty (the liquid water totally converted to water van

Answer:

The size of the atom closest to 30 to 300 pm

Explanation:

in case you mean greenhouse gases they are increasing due to the result of human activities in relation to fossil fuels. the concentration of greenhouse gases also increases due to deforestation. the concentration increases as more is entering the atmosphere than it is being removed.

Answer:

the answer is flowering plant.

Explanation:

i hope it helps. later.

Answer:

40

Explanation:

300÷15=20

20×2=40

hope this helps

Answer:

300(2)

Explanation:

given:

2 sticks of butter

how much butter if 300

multiply it

Answer:

Variable costs are costs that change depending on the amount of the product you are providing. Fixed costs On the other hand are costs that are the same no matter how much of the product or service you are providing. Fixed costs are also called overhead or fixed operating costs.

_________________________________

[tex]\boxed {\sf Variable \:costs:-}[/tex]

The materials for making the bracelet are a variable cost, because the amount of materials you buy changes depending on how many bracelets you are making.

[tex]\boxed {\sf Fixed \:costs:-}[/tex]

If you pay rent for a warehouse each month, the amount you pay in rent is the same each month. It doesn't go up or down depending on how many sales you make.

[tex]\boxed {\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:}[/tex]

Explanation:

weight/volume percentage concentration = (mass in g  ÷  volume) × 100

                                                                      =  (0.850 g ÷ 20 ml) × 100

                                                                      = 4.25 g/ml %

∴ the weight/volume percentage concentration of the sucrose solution is 4.25 g/ml %.

Answer:

physical has a fundamental explanation and chemical properties has reversibility explanation with their three examples of discussion,reversibilitation and differences.

,

P₂O₅

English-

the formula to phosphoric anhydride is P₂O₅

Spanish-

la fórmula del anhídrido fosfórico es P₂O₅

Answer:

Diffusion :  

the spreading of something more widely.

-AND-

Thermal energy, or heat, is the energy that comes from the movement of atoms and molecules in a substance. Heat increases when these particles move faster. Geothermal energy is the thermal energy in the earth. Motion energy is energy stored in the movement of objects.

Explanation:

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Explanation:

The nomenclature of ionic compounds is given by:

1. Positive is written first.  And if the metal atom has various oxidation states then its oxidation state is to be mentioned in brackets with help of roman numbers

2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.

1.)  : Calcium chloride  (Correct)

In the given compound, calcium has oxidation state of +2 and chlorine has oxidation state of -1.The name is correct.

2.)  : Copper (II) oxide   (Incorrect)

In the given compound,copper has the oxidation state of +1 and oxygen has oxidation state of -2.So ,the correct name will be Copper (I) oxide.

3.)  : Lead (II) sulfide   (Incorrect)

In the given compound, lead has the oxidation state of +4 and sulfur has oxidation state of -2. So ,the correct name will be Lead (IV) sulfide.

ur so ok.

Explanation:

i need points ok.

thanks

Answer: Density

Explanation:

Density = (mass)/(volume)

Answer:

chlorine atom

A chlorine atom has 17 protons, 18 neutrons, and 17 electrons.

Explanation:

Answer:

chlorine atom

Explanation:

A chlorine atom has 17 protons, 18 neutrons, and 17 electrons.

The answer is:

Because they have 1 more or less electron in there last orbit, so they are very active to form compounds which make them stable.

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Answer:

nitrogen gas, oxygen, and ocean water

Hope it helps!

Explanation:

Answer: Nitrogen Gas, Oxygen, Ocean water

Explanation:.yes

Answer:

cadmium- Cd,

physical state= solid at room temperature

Manganese- Mn

physical state= solid at room temperature

Answer:

Cd

cadmium

112.41

transition metal

Mn

manganese

54.94

transition metal

Rn

radon

222.02

noble gas

Answer:

Plz mark as brainlist

luminous is relating to light as it is perceived by the eye, rather than in terms of its actual energy.

A brief description explaining the term "luminous" to generating or reflecting brilliant light, particularly at night: luminous attire. The bright glow of laptops illuminated the library.

Luminous objects are things like the sun that produce or radiate light on their own. Others include a torch, an electric lamp, etc. Non-bright objects are those that don't emit any light of their own and can only be seen when light from a luminous source reflects off of them. Moon, a chair, a painting, etc. are a few examples.

Luminous objects are defined as those that produce their own light. Just the sun emits its own light; all other things only reflect light that is incident upon them.

The presence of luminous items produces the feeling of light. These things are visible because they independently emit light. As an illustration, consider the Sun, the stars, lightbulbs, torches, tube lights, candles, and so on.

Thus,the term "luminous" to generating or reflecting brilliant light, particularly at night: luminous attire. The bright glow of laptops illuminated the library.

To learn more about luminous, follow the link;

https://brainly.com/question/18708762

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Answer:

mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

Explanation:

nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn

Answer:

Molar mass CaCO3 = 100 g/mol

Explanation:

So if we have 75 four or 5 g of the sample And there is 25.8 Percent calcium carbonate by mass. That's 25.8 g of calcium carbonate In 100 g of the sample. I'll do the most application at the end. Um And then if we know the grams of calcium carbonate, well, just reverse the conversion factor. Yeah, 100 g of the sample contains 25 0.8 grams of calcium carbonate. And when we do this, multiplication division, for part a 75.45 Times 25.8, divided by a 1000 Uh 23 significant figures is 1.9 five g of calcium carbonate. Mhm. And then for part B 18.8 times 100 Divided by 25.8 is 2. 3 significant figures 72 0.9 grams. Mhm of the sample. Yeah.

Answer:

wouldn't it be (D)

Explanation:

Igneous, Sedimentary & Metamorphic, because those are the type of rocks?

Answer:

D

Explanation:

Answer: if doing it on ck-12 the answer is 40.1

Explanation:

There are produced 40.1 grams of ammonium chloride (NH₄Cl) in the reaction between 17.0 g of ammonia (NH₃) and 26.6 g of chlorine gas (Cl₂).

The reaction between ammonia and chlorine gas is the following:

8NH₃ + 3Cl₂ → 6NH₄Cl + N₂        

Initially, we have:

According to the conservation of mass, matter cannot be created or destroyed, only can be transformed, so the mass of the reactants must be equal to the mass of the products.  

The mass of ammonium chloride produced is:

[tex] m_{r} = m_{p} [/tex]

[tex] m_{NH_{3}} + m_{Cl_{2}} = m_{NH_{4}Cl} + m_{N_{2}} [/tex]

[tex] 17.0 g + 26.6 g = m_{NH_{4}Cl} + 3.50 g [/tex]

[tex] m_{NH_{4}Cl} = 17.0 g + 26.6 g - 3.50 g = 40.1 g [/tex]

Therefore, 40.1 grams of ammonium chloride are produced in the reaction.

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Answer:

A. they work together with the environment.

Explanation:

Because work together is what keep the environments clean and tidy.

Answer:

i thank its 4)

Explanation:

becuse if they have reactino or no reatino will it 4) becuse i did this

Answer:

The answer is D. Due to the rotation of earth being a cause is true.

Explanation:

Answer:An atom is a particle of matter that uniquely defines a chemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons. Each electron is negatively charged. The nucleus is positively charged, and contains one or more relatively heavy particles known as protons and neutrons.

Explanation:

Answer:

Hello, There! I'll be glad to help!

describe atom in your own words​

The atom is the smallest unit of an element that retains the properties of that element.

Explanation:

Therefore, I hope this helps!