I need help with this

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sweet-ann [11.9K]

Answer:

The physical states that are represented by each graph region are the liquid and the solid, the highest temperature is the liquid and as it freezes it becomes a solid. The particles change because when it's a liquid, it isn't that compact it's just spreading smootly but as it freezes the atoms start to stick together and become compact.

Explanation:

Hope that made sense!

8 0

3 years ago

will give brainliest!! please help ! .. Calculate the total pressure of the mixture in atmospheres ( atm ).

nordsb [41]

Answer:

13.94 atm

Explanation:

From the question given above, the following data were obtained:

Pressure of H₂ = 2 atm

Pressure of NH₃ = 303 KPa

Pressure of CO₂ = 3000 mmHg

Pressure of N₂ = 3800 torr

Total pressure (Pₜ) in atm =?

Next, we shall convert 303 KPa, 3000 mmHg and 3800 torr to atm.

This can be obtained as follow:

Converting 303 KPa to atm

101.325 KPa = 1 atm

Therefore,

303 KPa = 303 KPa × 1 atm / 101.325 KPa

303 KPa = 2.99 atm

Thus, 303 KPa is equivalent to 2.99 atm.

Converting 3000 mmHg to atm

760 mmHg = 1 atm

Therefore,

3000 mmHg = 3000 mmHg × 1 atm / 760 mmHg

3000 mmHg = 3.95 atm

Thus, 3000 mmHg is equivalent to 3.95 atm

Converting 3800 torr to atm

760 torr = 1 atm

Therefore,

3800 torr = 3800 torr × 1 atm / 760 torr

3800 torr = 5 atm

Thus, 3800 torr is equivalent to 5 atm.

Finally, we shall determine the total pressure of the mixture as follow:

Pressure of H₂ (P₁) = 2 atm

Pressure of NH₃ (P₂) = 2.99 atm

Pressure of CO₂ (P₃) = 3.95 atm

Pressure of N₂ (P₄) = 5 atm

Total pressure (Pₜ) in atm =?

Pₜ = P₁ + P₂ + P₃ + P₄

Pₜ = 2 + 2.99 + 3.95 + 5

Pₜ = 13.94 atm

Therefore, the total pressure of the mixture is 13.94 atm

4 0

3 years ago

What is the definition of chemistry

Andrei [34K]

<h2>Definition:</h2>

Chemistry is the study of matter, it's properties, how and why substances combine or separate to form other substances, and how substances interact with energy. Chemistry is one of the physical sciences that help us to describe our world.

<h2>sentence examples:</h2>

•chemistry is a little hard.

•chemistry is fun to do!

<h2>synonyms:</h2>

•system

•organizing

•structure

•plan

•standard

•assembly

•design

•formation

•pattern

•method

•construction

<h2>antonyms:</h2>

•imbalance

•disproportion

•disorganizing

<h2>Origin:</h2>

Chemistry comes from Arabic word al-Kimia which means the art of transformation. Chemistry began as the study of alchemy.

5 0

3 years ago

Identify the terms,like terms,coefficients and constants <br><br><br> 2+3a+9a

yawa3891 [41]

Like terms in algebra are terms that have the same variables and power. Constants contain only numbers, we call them constants because their values don't change. Coefficients are the numbers in front of the variable ex: 5y in that expression 5 is the coefficient. So in the expression 2+3a+9a there is one constant which is 2 the likes terms are 3a and 9a because they have the same variable. And the coefficients are 3 and 9 because they are in front of the variable.

7 0

3 years ago

Read 2 more answers

Predict the products of the reaction below. that is, complete the right-hand side of the chemical equation. be sure your equatio

kkurt [141]

The equation is as follow,

<span> HBr </span>₍aq₎ + H₂O ₍l₎ →

Solution:
HBr being strong acid with Ka value of 1.0 × 10⁹. When HBr is added to water, water acts as a base and HBr acts as a acid. Water picks the proton (H⁺) from HBr and converts into Conjugate acid (H₃O⁺) ahile HBr is converted into Conjugate Base (Br⁻) after loosing proton. The equation for this reaction is as follow,

HBr ₍aq₎ + H₂O ₍l₎ → H₃O⁺ ₍aq₎ + Br⁻ ₍aq₎

8 0

4 years ago