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dedylja [7]
3 years ago
11

Why do scientists say that most of the mass of an atom is located in the nucleus?

Chemistry
1 answer:
Bess [88]3 years ago
3 0
<span>Because the mass of electrons is very low.</span>
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Help me with my science questions they are due tomorrow. I have a C in this class!
Sedbober [7]
A cut fire chemicals
5 0
3 years ago
. An open manometer is filled with mercury. The mercury level is 12mm higher on the side open to the atmosphere. What is the tot
Mariulka [41]

Answer:

102kPa

Explanation:

760mmHg = 101.325 kPa

12mmHg = x

Upon converting from mmHg to kPa we have;

x = ( 12 mm Hg x  101.325 kPa)  / 760mmHg

x = 1.599868421 kPa

Total pressure = 100.8 kPa + 1.599868421 kPa

Total pressure = 102kPa

8 0
4 years ago
The element iodine forms a(n) _______ with the charge . The symbol for this ion is , and the name is . The number of electrons i
-BARSIC- [3]

Answer:

The element iodine forms an anion with the charge -1. The symbol for this ion is I⁻¹, and the name is iodide. The number of electrons in this ion is 7.

Explanation:

Hello,

In this case, we have to consider iodine has the capacity to accept the electrons lost by other elements such as metals or hydrogen by becoming negatively charged. Such phenomena makes iodine to form an anion (negatively charged) with the charge -1, since it only needs one electron to attain the octet. Moreover, the symbol of such ion is I⁻¹ and its name is iodide. By cause of the aforementioned, the number of electrons it has is 7 since at its outer shell seven electrons are found (see electron configuration Kr,5s²,5p⁵).

Best regards.

7 0
3 years ago
A high school chemistry student wishes to demonstrate how water can be separated into hydrogen and oxygen by electrolysis. She k
Inessa05 [86]

Answer:

H2SO4

Explanation:

An electrolyte is a chemical compound that conducts electricity by changing into ions when melted or dissolved into a solution. An example of an electrolyte is sodium chloride.

Strong acids such as sulfuric acid (H2SO4), and strong bases such as potassium hydroxide (KOH), and sodium hydroxide (NaOH) are frequently used as electrolytes due to their strong conducting abilities.

4 0
3 years ago
What features do all the resonance forms of a molecule or ion have in common?
NeX [460]

Answer/Explanation:

Things that will vary include the distribution of electrons between atoms, lone pairs, and bonds, the number of single vs double or triple bonds, and the formal charges on atoms in the structure.

All resonance forms of the same molecule or ion must have the same number of atoms, connected in the same way, and the same number of total electrons.

5 0
3 years ago
Read 2 more answers
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