3 years ago

What is the nucleus of an atom?

1 answer:

5 0

Answer:

The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment.

You might be interested in

What is the best definition of a eukaryotic cell?

Novosadov [1.4K]

Answer:

A. has an internal structure consisting of a membrane–bound nucleus and membrane–bound organelles

Explanation:

3 0

3 years ago

Name a compound containing bromine and iodine

Mama L [17]

Synthesis. Iodine monobromide is formed when iodine and bromine are combined in a chemical reaction: I2 + Br2 → 2 IBr.

4 0

3 years ago

As a "rule of thumb" there are 20 drops of a liquid in a mL. Using this estimate and a density of 1.685, how many moles are in 2

arlik [135]

Answer:

0.020 mol

Explanation:

Let's consider the following relations:

20 drops of a liquid have a volume of 1 mL.
The density of the solution is 1.685 g/mL, that is, each milliliter of solution has a mass of 1.685 g of solution.
There are 85 g of phosphoric acid per 100 grams of solution (85 % by weight).
The molar mass of phosphoric acid is 97.99 g/mol

With these relations, we can calculate the moles of phosphoric acid in 27 drops of solution.

$27drop \times \frac{1mL}{20drop} \times \frac{1.685gSolution}{1mL} \times \frac{85gH_3PO_4}{100gSolution} \times \frac{1molH_3PO_4}{97.99gH_3PO_4} = 0.020 mol$

4 0

3 years ago

When an atom of iron loses all of its 4s electrons and one of its 3d electrons, what is its charge?

icang [17]

There are two electrons in 4s and 6 in 3d. When you lose 3 electrons, you will be left with an ion of 3+ charge!

5 0

4 years ago

Within a particular compound, an atom gives up two electrons. This atom is

ICE Princess25 [194]

Positively charged due to donating two electrons and becoming an ion.

4 0

3 years ago

Read 2 more answers