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Lapatulllka [165]
4 years ago
7

I'm a really stuck in this. I kind of suck in chemistry, please help me. I would really appreciate it.

Chemistry
1 answer:
MArishka [77]4 years ago
3 0
<span>Group 1 can be characterized as atoms that have 1 electron in their valence shell. This is valuable when dealing with these questions, because the loss or gain of valence electrons is what defines ionic relationships. When group 1 elements form ionic bonds with other atoms, they are extremely likely to lose their valence electron, since the nucleus has a weaker pull on it than, say, a chlorine atom has on its 7 valence electrons. The weaker pull between the nucleus and the valence electron of group 1 elements means that the radius is high, since the electron is more free to move with less pull on it. This also means that the first ionization energy is low, since it takes relatively little energy for that electron to be pulled away to another atom.</span>
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The heart has 2 chambers: The UPPER CHAMBERS are called the ______________ and the LOWER CHAMBERS are called the _______________
katovenus [111]

The heart has 2 chambers: The UPPER CHAMBERS are called the <u>atrium</u> and the LOWER CHAMBERS are called the <u>ventricles</u>

Therefore , answer is c

7 0
3 years ago
Read 2 more answers
Plz help meh, I think there is trick question!!!
Crank

Answer:

Explanation:

Atoms of each element contain a characteristic number of protons. In fact, the number of protons determines what atom we are looking at (all atoms with six protons are carbon atoms), the number of protons in an atom is called the atomic number. In contrast, the number of neutrons for a given element can vary.

I hope I helped you!

5 0
3 years ago
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Fermentation is a complex chemical process of wine making in which glucose is converted into ethanol and carbon dioxide: C6H12O6
attashe74 [19]

Answer:

Mass of ethanol obtained is 260.682 grams.

Volume of the ethanol obtained is 0.3304 L.

Explanation:

C_6H_{12}O_6\rightarrow 2C_2H_5OH + 2CO_2

Moles of glucose = \frac{510.6 g}{180 g/mol}=2.833 mol

According to the reaction, 1 mol of gluocse gives 2 moles of ethanol.

Then 2.833 moles of glucose will give :

\frac{2}{1}\times 2.8333 mol=5.667 mol

Mass of 5.667 moles of an ethanol :

5.667 mol × 46 g/mol = 260.682 g

Volume of ethanol = V

Density of the ethanol = 0.789 g/mL

Density=\frac{Mass}{Volume}

0.789 g/mL=\frac{260.682 g}{V}

V=\frac{260.682 g}{0.789 g/mL}=330.40 mL = 0.3304 L

Mass of ethanol obtained is 260.682 grams.

Volume of the ethanol obtained is 0.3304 L.

5 0
3 years ago
Match the following family of elements to its group.
docker41 [41]

Explanation:

To solve this problem, we simply use the periodic table of elements which groups elements based on their atomic numbers.

The atomic number of an element is the number of protons it contains. The protons are the positively charged particles within an atom.

  • The vertical arrangement of elements on the periodic table is the group.
  • The horizontal arrangement of elements is the period.

Now;

Noble gases  belongs to group 18

Alkali earth metals belongs to group 2

Halogens belongs to group  17

Alkali metals belongs to group 1

Transition metals belongs to group 3-12

7 0
3 years ago
What happens as liquid water boils?
Licemer1 [7]

Answer:

C) The molecules become separated from each other.

Explanation:

5 0
3 years ago
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