CHEMISTRY MIDDLE SCHOOL

A substance that forms a vapor is generally in what physical state at room temperature? solid, gas, liquid or solid, liquid

Answers

Answer 1
Answer:

Answer:

liquid.

Explanation:

At room temperature, a liquid is, well a liquid, but if you heat it up, it will evaporate into a vapor.
Answer 2
Answer:

Final answer:

Usually, substances that form a vapor at room temperature are in the liquid or solid state. This happens because of evaporation (in liquids) and sublimation (in solids).

Explanation:

A substance that forms a vapor is typically in a liquid or solid state at room temperature. This is due to the process called Evaporation for liquids and Sublimation for solids. Evaporation is when a substance changes from a liquid to a gas at temperatures below its boiling point. Sublimation, on the other hand, is when a solid changes directly to gas without passing through a liquid stage. These processes can happen at room temperature, depending on the substance.

Learn more about Vapor Formation here:

brainly.com/question/9524396

#SPJ6

Related Questions

Balance the combustion reaction between octane and oxygen.2C ₈ H ₁₈ + O ₂ → CO ₂ + H ₂ O
PLEASE I NEED HELP ASAP!! Drag each number to the correct location on the equation. Each number can be used more than once, but not all numbers will be used.Balance the equation with the correct coefficients.2345
What happens to paper chromatography in you leave it in water for too long?
A ten mile area of trees is removed from the tropical rainforest. How will this affect the amount of water and the amount of oxygen in the area?
Which of the following statements is a valid hypothesis?The atmosphere contains more nitrogen than oxygen.Alien spaceships cause crop circles to form.Why are most plants green in color?A frog jumps more often when it is feeling happy.

Name two metals alloyed with iron to make stainless steel.

Answers

For stainless steel different kinds of compositions are used. Based on that different series of stainless steel has been coined.
1. Series 200 - Iron alloyed with chromium, nickel and manganese.
2. Series 300 - It has 
a. Stainless Steel 304 - it has composition of 18% chromium and 8% Nickel
b. Stainless Steel 316 - This has 18% chromium and 10% Nickel

Each kind of stainless steel is of different cost and has different applications.

What kind of chemical reaction is below?
AgNO3 + NaCI -> AgCI + NaNO3

Answers

Reaction is the Double Replacement or Displacement reaction, depending on what textbook you use in school. :) 

AX+ BY -------> AY+BX

i'm going to insert a picture to show you
A double replacement reaction is happening in that equation.

Here is the formula for double replacement:

AB+CD ---> AD+CB

Using enthalpies of formation, calculate H.

Answers

ΔH° = -851.5 kJ/mol given that

\begin{array}{cc}\textbf{Species}&{\bf {\Delta H_f\textdegree{}}}\n \text{Fe}_2\text{O}_3\;(s) & -824.2\;\text{kJ}\cdot\text{mol}^(-1)\n\text{Al}_2\text{O}_3\;(s) & -1675.7\;\text{kJ}\cdot\text{mol}^(-1)\end{array}

(Source: Chemistry Libretexts.)

Explanation

Refer to a thermodynamic data table for the standard enthalpy of formation for each species.

Don't be alerted if the data for Al (s) and Fe (s) are missing. Why?

  • The standard enthalpy of formation of a substance measures the ΔH required to form each mole of it from the most stable allotrope of its elements under STP.
  • Both Al (s) and Fe (s) are already the most stable form of their element under STP (note that the state symbol matters.) There's no need to form them again.

As a result, \Delta H_f\textdegree{} = 0 for both Al (s) and Fe (s).

\displaystyle \Delta H_{\text{rxn}}\textdegree{} = \text{Sum of }\Delta H\text{ for all }\textbf{Product} - \text{Sum of }\Delta H\text{ for all }\textbf{Reactant}}\n\phantom{\Delta H_{\text{rxn}}\textdegree{}} = (1* \Delta H_f\textdegree{}(\text{Al}_2\text{O}_3\;(s)) + 1* \Delta H_f\textdegree{}(\text{Al}\;(s)) \n \phantom{\Delta H_{\text{rxn}}\textdegree{}=}-(1* \Delta H_f\textdegree{}(\text{Fe}_2\text{O}_3\;(s)) + 1*\Delta H_f\textdegree{}(\text{Fe}\;(s))

\Delta H_{\text{rxn}}\textdegree{}} = (1 * (-1675.7)) - (1*(-824.2)) = -851.5\;\text{kJ}\cdot\text{mol}^(-1).

The number "1" here emphasizes that in case there are more than one mole of any species in one mole of the reaction, it will be necessary to multiply the \Delta H_f\textdegree{} of that species with its coefficient in the equation.

Beginning with commercial grade hydrochloric acid, 1.00 • 10^2 mL of a 12.4 M HCl is added to water to bring the total volume if the solution to 0.820L. What is the concentration of this new solution?

Answers

Concentration=mass/volume.

This should help.

According to scientific evidence, earth’s earliest atmosphere lacked oxygen. Over time, oxygen was added to the atmosphere.Which statements explain how this change occurred and how it affected life on earth?

Choose all answers that are correct.

A.
The addition of oxygen to the earth's atmosphere helped make possible the development of eukaryotic organisms, which need oxygen to carry out many of their life processes.

B.
When cyanobacteria evolved, they carried out photosynthesis. Oxygen is a product of photosynthesis. The addition of oxygen to earth’s atmosphere helped make possible the development of eukaryotic organisms, which need oxygen to carry out many of their life processes.

C.
The addition of oxygen to the earth's atmosphere helped make possible the development of prokaryotic organisms, which need oxygen to carry out many of their life processes.

D.
When cyanobacteria evolved, they carried out photosynthesis. Oxygen is needed to carry out photosynthesis.

Answers

B.
The cynobacteria were already there without the oxygen, so that rules out A, and a lot of prokaryotes were anaerobic, so that rules out C. Finally, Photosynthesis does not require oxygen. Instead, Oxygen is a waste product of it. Therefore, it cannot be D. So, we are only left with B
Hoped this helped :D

How we can determine the correct technique to separete mixture

Answers

There are numerous ways or techniques to separate a mixture. The commonones are the following. One is decanting, the separation of the liquid from thesolid part of the mixture. Second, is the filtration. It is the use of cloth toseparate the liquid from the solid. 
Other Questions
Which type of change does not break or form bonds? A.physical B. Chemical change C. Nuclear change D. Molecular change
Which of these processes take place at the same temperature?freezing and condensationmelting and sublimationcondensation and vaporizationsublimation and boiling
Which formula represents an organic compound?( l) CaH2 (3) H2O2 (2) C4H8 (4) P2O5
Your amplifier is playing a 200 Hz tone. When you double the amplitude(loudness), what happens to the speed of the sound (v) and the frequency (f)? a. v doubles, f stays the same b. v doubles, f also doubles c. v stays the same, and f doubles d. v and f both stay the same e. v and f both decrease