Which type of molecule is shown below? A. Alcohol B. Ester C. Amine D. Ketone

A sample of gas has an initial volume of 3.00 L and an initial pressure of 2.14 atm. If the volume expands to 8.15 L, what is th

Alla [95]

Answer:

The final pressure is 0.788 atm (option b).

Explanation:

Boyle's law says that the volume occupied by a given gaseous mass at constant temperature is inversely proportional to pressure. That is: if the pressure increases, the volume decreases, while if the pressure decreases, the volume increases. This is expressed mathematically as the product of pressure times volume equal to a constant value:

P*V=k

Assuming a certain volume of gas V1 that is at a pressure P1 at the beginning of the experiment, by varying the volume of gas to a new value V2, then the pressure will change to P2, and it will be fulfilled:

P1*V1=P2*V2

In this case:

P1= 2.14 atm
V1= 3 L
P2= ?
V2= 8.15 L

Replacing:

2.14 atm*3 L= P2* 8.15 L

Solving:

$\frac{2.14 atm*3 L}{8.15 L} =P2$

0.788 atm= P2

The final pressure is 0.788 atm (option b).

6 0

3 years ago

When a solution of 6m hcl is made from a stock of concentrated hcl by adding an equal volume of water, why is the concentration

nikklg [1K]

Answer:-

HCl is a volatile acid. It easily evaporates at room temperature. So the concentrated HCl which is supposed to be 12 M is no longer 12 M since some of the HCl has already escaped as vapor.

Hence when a solution of 6M HCl is made from a stock of concentrated HCl by adding an equal volume of water, the concentration of the solution is only an approximate concentration since the concentration of the stock concentrated solution is also approximate.

8 0

3 years ago

When a neutrally charged atom loses an electron to another atom, the result is the creation of

Arturiano [62]

Two charged atoms. This is because the atom that loses the electron will become a positively charged ion (a cation) and the one that gains that electron will become a negatively charged ion ( an anion).

4 0

3 years ago

Read 2 more answers

carbon cannot be broken down, but water can. Why is there no chemical process that will break down carbon? How can water be brok

saul85 [17]

Carbon is just a simple element where as water is a compound which means water is made up of 2 or more elements

6 0

3 years ago

The photo shows an animal called a water flea. Which level of organization is it an example of?

Citrus2011 [14]

Answer:

A. organism i think