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andrew-mc [135]
3 years ago
11

Can someone give me periodic table till 30?​

Chemistry
1 answer:
inysia [295]3 years ago
6 0

1. H (Hydrogen)

2. He (Helium)

3. Li (Lithium)

4. Be (Beryllium)

5. B (Boron)

6. C (Carbon)

7. N (Nitrogen)

8. O (Oxygen)

9. F (Fluorine)

10. Ne (Neon)

11. Na (Sodium)

12. Mg (Magnesium)

13. Al (Aluminium)

14. Si (Silicon)

15. P (Phosphorus)

16. S (Sulfur)

17. Cl (Chlorine)

18. Ar (Argon)

19. K (Potassium)

20. Ca (Calcium)

21. Sc (Scandium)

22. Ti (Titanium)

23. V (Vanadium)

24. Cr (Chromium)

25. Mn (Manganese)

26. Fe (Iron)

27. Co (Cobalt)

28. Ni (Nickel)

29. Cu (Copper)

30. Zn (Zinc)

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Write the atomic symbol for the isotope of bismuth with 125 neutrons.
vlada-n [284]

First, isotopes <u>are the atoms of a single element whose nuclei have a different number of neutrons</u>, and therefore, differ in mass numbers. You should know that atoms are formed by a nucleus that has a small size and is made up of protons and neutrons. The nucleus is surrounded by a cloud of electrons, which are found in a region of the atom called the cortex.

The mass number, represented as A, <u>is the sum of the number of protons and neutrons in the nucleus</u>. On the other hand, the atomic number (Z) is <u>the number of protons that exist in the nucleus. </u>

The isotopes of an element X are represented as follows,

<em>(see first attached picture)</em>

It should be noted that the number of neutrons of a chemical element can be calculated as the difference A-Z.

<u>The atomic and mass numbers of bismuth with 125 neutrons are</u>:

Z = 83

A = 83 + 125 = 208

Thus, the atomic symbol of the bismuth isotope with 125 neutrons is:

<em>(see second attached picture)</em>

5 0
3 years ago
¿Cuál era su juego favorito cuando eran niños?​
blagie [28]

Answer:

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Explanation:

7 0
3 years ago
Find the number of moles of water that can be formed if you have 182 mol of hydrogen gas and 86 mol of oxygen gas.
frutty [35]
Water has a chemical formula of H2O. This means that for every 2 moles of hydrogen and 1 mole of oxygen, one mole of water will be formed.

Note that hydrogen gas and oxygen gas are both biatomic molecules. 

 (1)                   (182 mol H2) x (1 mol H2O/ 1 mol H2) = 182 mol H2O
 (2)                   (86 mol O2) x (2 mol H2O / 1 mol O2) = 172 mol H2O

We choose the smaller number of the two as the answer to this item. Thus, the answer to this question is 172 mol of H2O can be formed out of the given quantities. 
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ANEK [815]

Answer: let me figure it out rlly quick

Explanation:

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sergejj [24]

Answer:

Organic compound

Explanation:

Acetominophen's molecular formula is C8H9NO2. Right from the formula you can also see that the compound has C (carbon) in it, therefore making it an organic compound (in which the definition is that the compound contains carbon in it).

3 0
3 years ago
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