All categories

3 years ago

This is the process of matter changing from a gaseous state to a liquid state.

Chemistry

2 answers:

Stolb23 [73]3 years ago

6 0

Answer: condensation

Explanation:

rewona [7]3 years ago

4 0

Answer:

Condensation.

Explanation:

This is called condensation.

this happens for example when the water vapour in the air changes to rain.

You might be interested in

Which of the following reactions shows that the formation of CO2 releases

tiny-mole [99]

Answer:

A. C(s) + O2(g) → CO2(g) + 393.5 kJ

Explanation:

The formation of carbon IV oxide (CO2) is an exothermic process. n exothermic process is a chemical process in which heat is evolved. Speaking in lay man's terminology, heat is one of the 'products' of the reaction. This implies that heat is evolved by the process.

The formation of CO2 is always a combustion reaction where heat is evolved or released by the reaction system. Hence the reaction could be shown as;

C(s) + O2(g) → CO2(g) + 393.5 kJ

This implies that 393.5 kJ of energy is released in the reaction in the form of heat. Hence the answer given in the answer box.

7 0

3 years ago

Una sustancia posee un punto de ebullición de 357°C y un punto de fusión de 38,9°C. Dicha sustancia es colocada en un recipiente

Crank

Answer:

english?

Explanation:

7 0

3 years ago

A tank has a total pressure of 285 kPa and contains Hydrogen, Oxygen, Carbon dioxide, and Neon. If Neon has a partial pressure o

Ymorist [56]

Answer:

Lets the total pressure is Pt and the individual gases are designated as pH2, pCO2, pNe, pO2.

Pt = pCO2+ pNe+pO2+ pH2

285KPa = 13 KPa+ 14 KPa + 157 KPa +pH2

Now add the partial pressure of CO2, Ne and O2 which is equal to 184 KPa.

285 KPa = 184 KPa + pH2

Now subtract the individual pressure of each gas from thje total pressure.

285 KPa - 184 KPa = pH2

101 KPa = pH2

The partial pressure of hydrogen is 101 KPa.

5 0

3 years ago

If an illegal drug is removed from the body according to a zero-order process and the concentration drops from 300 ng/mL to 150

olga_2 [115]

Answer:

$\large \boxed{\text{b. 0 ng/mL}}$

Explanation:

The integrated rate law for a zero-order reaction is

A₀ - A = kt

1. Calculate the rate constant

$\begin{array}{rcl}\text{300 ng/mL - 150 ng/mL} & = & k\times \text{2 h}\\\text{150 ng/mL} & = & 2k \text{ h}\\k & = & \dfrac{\text{150 ng/mL} }{ \text{2 h} }\\\\& = & \textbf{75 ng$\cdot$mL$^{-1}\cdot$ h$^{-1}$}\\\end{array}$

2. Calculate the new concentration

$\begin{array}{rcl}\text{A$_{0}$ - A} & = & kt\\\text{300 ng$\cdot$mL$^{-1}$ - A} & = & \text{75 ng$\cdot$mL$^{-1}\cdot$ h$^{-1}$}\times \text{4 h}\\\text{300 ng$\cdot$mL$^{-1}$ - A} & = & \text{300 ng$\cdot$mL$^{-1}$}\\\text{A} & = &\text{300 ng/mL - 300 ng/mL}\\& = & \mathbf{0}\\\end{array}\\\text{The concentration after 4 h will be $\large \boxed{\textbf{0 ng/mL}}$}$

3 0

3 years ago

An aqueous solution at has a pH of 8.5 . Calculate the pOH. Round your answer to 1 decimal places.

victus00 [196]

Answer:

The pOH is 5.5

Explanation:

pH is defined as the negative logarithm of the concentration of hydrogen ions.

Thus,

pH = - log [H⁺]

The expression between pH and pOH at $25\ ^0C$ is shown below as:-

pH + pOH = 14

Given that, pH = 8.5

So, pOH = 14 - 8.5 = 5.5

4 0

3 years ago