Mitosis and Meiosis is dividing which organelle?

The table below gives the atomic mass and relative abundance values for the three isotopes of element M.

Serhud [2]

The average atomic mass formula is:

$average atomic mass = \Sigma (percent abundane)\times (atomic mass)$

Substituting the values in the formula:

$average atomic mass = \frac{78.99\times 23.9850+10\times 24.9858+11.01\times 25.9826}{100}$

$average atomic mass = \frac{1894.57515+249.858+286.068426}{100}$

$average atomic mass = 24.30516 amu$

Hence, $24.30516 amu$ is the average atomic mass of element M.

7 0

3 years ago

HELP! <br><br>How many moles of a solute would 3 liters of a 2-molar solution contain?

katrin [286]

Answer: If it was 3 mol of solute in 2 L of solution it would be 1.5 mol/L.

However when the solute dissolves in the water creating the solution, the volume increases. So 3 mol of solute in 2 L of water creates more than 2 L of solution.

The correct method for making a 3 mol/L solution would be to place some water into a two liter volume container. Dissolve all 3 mol of the solute into the water. Then add water to the 2 L mark. Now there is 3 mol of solute and 2 L of solution.

Explanation: I hope this helps XDDDD

8 0

2 years ago

In the ground-state electron configuration of fe3+, how many unpaired electrons are present? express your answer numerically as

Virty [35]

Answer:
Iron has 5 unpaired electrons in Fe⁺³ state.

Explanation:

Iron having atomic number 26 has following electronic configuration in neutral state.

Fe = 1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d⁶

When Iron looses three electrons it attains +3 charge with following electronic configuration.

Fe⁺³ = 1s², 2s², 2p⁶, 3s², 3p⁶, 3d⁵

The five electrons in d-orbital exist in unpaired form as,

3(dz)¹, 3d(xz)¹, 3d(yz)¹, 3d(xy)¹, 3(dx²-y²)¹

3 0

3 years ago

A piece of wood has a labeled length value of 63.2 cm. You measure its length three times and record the following data: 63.1 cm

Ulleksa [173]

Percent error (%)= $\frac{\left | Accepted value - Measured value \right |}{Accepted value}\times 100$