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2 years ago

A group of students observed a sample of soil and recorded their observations.

Chemistry

1 answer:

Ahat [919]2 years ago

6 0

hola amigos como están bien""

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Find the pH of NaOH with a concentration of 0.0600 M.

Citrus2011 [14]

Answer:

12.78

Explanation:

pOH= -log(0.0600) = 1.22184875

pH= 14-1.22184875 = 12.78

5 0

3 years ago

Suppose you made 40 atoms of Highlinium and it has a

Karo-lina-s [1.5K]

Answer:

After 6sec 5 atoms will be left.

Explanation:

Given data:

Total atoms of Highlinium = 40

Half life = 2 sec

Atoms left after 6sec = ?

Solution:

First of all we will calculate the number of half lives passes during 6sec.

Number of half lives = Time elapsed/ half life

Number of half lives = 6 sec / 2sec

Number of half lives = 3

Now we will calculate the number of atoms left

At time zero = 40 atoms

At 1st half life = 40 atoms/2 = 20 atoms

At 2nd half life = 20 atoms/2 = 10 atoms

At 3rd half life = 10 atoms / 2 = 5 atoms

Thus, after 6sec 5 atoms will be left.

6 0

3 years ago

Consider 4.60 L of a gas at 365 mmHg and 20 C . If the container is compressed to 2.60 L and the temperature is increased to 36

BaLLatris [955]

Explanation:

The given data is as follows.

$V_{1}$ = 4.60 L, $P_{1}$ = 365 mm Hg

$V_{2}$ = 2.60 L, $P_{2}$ = ?

$T_{1}$ = (20 + 273) K = 293 K, $T_{2}$ = (36 + 273) K = 309 K

Since, number of moles of gas are equal so, according to ideal gas equation:

$\frac{P_{1}V_{1}}{T_{1}}$ = $\frac{P_{2}V_{2}}{T_{2}}$

$\frac{365 mm Hg \times 4.60 L}{293 K}$ = $\frac{P_{2} \times 2.60 L}{309 K}$

$P_{2}$ = 681.03 mm Hg

Thus, we can conclude that new pressure $P_{2}$ is 681.03 mm Hg.

6 0

3 years ago

Acetaminophen is the active ingredient in Tylenol.

Tomtit [17]

Explanation:

a. Write the molecular formula of the compound.

Acetaminophen contains 8 carbon atoms, 9 Hydrogen atoms, 1 Nitrogen atom and 2 Oxygen atoms.

The molecular formular is given as; C8H9NO2

b. What is the hybridization state of each C, N, and O atom?

From the image attached;

All the carbon atoms in the benzene ring has hybridization of sp2.

The carbon that is doubly bonded (carbonyl) to the oxygen has hybridization of sp2

The last carbon to the right has hybridization of sp3

The hybridization of nitrogen in the compound is sp3 hbridized.

Oxygen atom in alcohol is sp3 hybridised

Oxgen in the carbonyl group is sp2 hybridized.

3 0

3 years ago

As a change of state takes place, heat and<br> temperature

Zina [86]

Can I see a picture?

3 0

3 years ago