What is the correct electron configuration for oxygen?

A coffee cup calorimeter was used to measure the heat of solution, the change in enthalpy that occurs when a solid dissolves in

Akimi4 [234]

Answe5r:

Explanation:

4 0

3 years ago

If the temperature of a gas is raised from 30°C to 60°C, what happens to the pressure?

Fofino [41]

<h3>Answer:</h3>

The pressure increases by 10% of the original pressure

Thus the new pressure is 1.1 times the original pressure.

<h3>Explanation:</h3>

We are given;

Initial temperature as 30°C, but K = °C + 273.15
Thus, Initial temperature, T1 =303.15 K
Final temperature, T2 is 333.15 K

We are required to state what happens to the pressure;

We are going to base our arguments to Pressure law;
According to pressure law, the pressure of a gas and its temperature are directly proportional at a constant volume

That is; P α T
Therefore, at varying pressure and temperature

$\frac{P1}{T1}=\frac{P2}{T2}$

Assuming the initial pressure, P1 is P

Rearranging the formula;

[tex]P2=\frac{P1T2}{T1}[/tex]

$P2=\frac{(P)(333.15K)}{303.15K}$

$P2 = 1.099P$

= 1.10 P

The new pressure becomes 1.10P

This means the pressure has increased by 10%

We can conclude that, the new pressure will be 1.1 times the original pressure.

5 0

3 years ago

Carbon is important to the structure of macromolecules because it has a valence of 4. what does this mean?

gogolik [260]

The valence part is referring to the outer most ring of electrons. Carbon only has four on the 'valence' or outer most ring helping it to form bonds with other things. I hope this helps!! Good Luck!!! :)

5 0

3 years ago

In the lab, you are given a metal ball. You measure the mass of the ball to be 28 g. You place the ball in a graduated cylinder

KIM [24]

Answer:

Density = 8.75ml

Explanation:

Density = Mass / Volume

In this problem ...

Mass = 28 grams

Volume = 31.4ml - 28.2ml = 32ml (water displacement also)

∴Density = mass /volume = 28g/32ml = 8.75g/ml

8 0

2 years ago

After the reaction between sodium borohydride and the ketone is complete, the reaction mixture is treated with water and H2SO4 t

In-s [12.5K]

Answer:

The hydrogen can be gotten from the added Acid or water during "workup".

Explanation:

Basically we can say that the reaction describe in this question is a Reduction reaction because of the chemical compound called sodium borohydride. In the reaction described above we can see that there is a Reduction of ketone to alcohol by the compound; sodium borohydride.

For the reduction Reaction to occur the C-O bond must break so as to enable the formation of O-H bond and C-H bond.

So, "the reaction mixture is treated with water and H2SO4 to produce the desired alcohol", thus, the oxygen will definitely pick up the hydrogen from H2SO4 or H2O.

7 0

3 years ago