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ryzh [129]
2 years ago
10

Record 4 concepts you learned from Matter, properties and Phases. It’s due today!!!

Chemistry
1 answer:
Ainat [17]2 years ago
3 0

Answer: Four concepts I’ve learned from Matter,properties, and phases is that matter is made up of 3 things solid,liquid, and gas and is what the earth is made up of. Properties are the characteristics of an object (characteristics of matter). Phases are something that things can go through such as a chemical change or a caterpillar turning to a butterfly, they are all phases.

Explanation: <3 I really hope this helped!

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Calculate the molecular (formula) mass of each compound: (a) iron(ll) acetate tetrahydrate; (b) sulfur tetrachloride; (c) potass
Nutka1998 [239]

Answer:

a) Iron(ll) acetate tetrahydrate: 245,68 g/mol

b) Sulfur tetrachloride: 173,87 g/mol

c) Potassium ermanganate 158,034 g/mol

Explanation:

To solve this kind of exercises you must look for the number of atoms in each molecule first, then look on the periodic table the atom weight and the multiply the atom weight times the quantity of each atom. For instance:

The molecule of Iron(II) acetate itetrahydrate is (CH3COO)2Fe•4H2O, it means that you have:

2 atoms of carbon times the atomic weight of C (12.00g/mol)= 24g

14 atoms of Hidrogen times the atomic weight of H (1,00g/mol)= 14g

6 atoms of Oxigen times the atomic weight of O (16,0g/mol)= 96

2 atoms of Iron times the atomic weight of Fe (55,84g/mol)= 111,68g

At last, you only have to add the results: 24+14+96+11,68= 245,68g/mol. This example was for the first molecule.

See you,

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