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shusha [124]
3 years ago
13

What are atoms made of

Chemistry
1 answer:
navik [9.2K]3 years ago
3 0
Protons, nuetrons, and electrons

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CALCULATE: Determine the volume occupied by 0.582 mol of a gas at 15 degrees Celsius if the pressure is 81.8 KPA?
7nadin3 [17]
PV=nRT

So

NRT/P=V ...
SI units for pressure is pascals so 81.8KPA = 81.8 x 10^3 PA
SI units for temperature is kelvin so 15 degrees celsius = 15 +273 = 288K


(0.582 x 8.314 x 288)/81.8 x 10^3 = 0.017 m3 (cubic meters)
8 0
3 years ago
Water is an example of a compound. Which of the following is the best description of all compounds?
AlexFokin [52]

Answer:

A compound has atoms of different elements chemically joined together They can't be separated without a chemical reaction.

3 0
2 years ago
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Mazyrski [523]
I think the answer is c
6 0
3 years ago
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Vladimir79 [104]

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2 years ago
The modern periodic table is arranged in order of increasing. true or false
qaws [65]

Answer:

Increasing atomic number - True

Explanation:

The modern table is based on Mendeleev’s table, except the modern table arranges the elements by increasing atomic number instead of atomic mass.

The Atomic number is the number of protons in an atom, and this number is unique for each element. For example, Hydrogen has an atomic number of 1, Calcium has an atomic number of 20.

In the modern periodic table the elements are further arranged into:

- rows, called periods, in order of increasing atomic number. Elements in the same periods have the same number of shells.

- vertical columns, called groups, where the elements have similar properties. Elements in the same group has the same number of valency (outermost number of electrons)

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