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RUDIKE [14]
3 years ago
11

1 Qu'est-ce qu'un atome?

Chemistry
1 answer:
nignag [31]3 years ago
4 0
Un atome est une particule de matière qui définit de manière unique un élément chimique
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What type of heat transfer warms our oceans and atmosphere
Arisa [49]
The answer is Conduction. I hope this helps!
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4 years ago
when we drop a feather and a stone at the same time from a height the stone reach the faster than a feather
Romashka [77]

Answer:

See explanation

Explanation:

When an a heavy object and a light object are thrown down from the same height, the two objects are expected to hit the ground at the same time since the two objects are both accelerated to the same extent (approximately 10m/s^2) under gravity.

However, due to air resistance, the heavier object reaches the ground first before the lighter object.

Hence, when we drop a feather and a stone at the same time from a height the stone will hit the ground faster than the feather.

8 0
3 years ago
Which intermolecular forces increase rapidly with increasing molecular size?
blondinia [14]
LONDON DISPERSION FORCES
8 0
4 years ago
Calculate the number of moles of magnesium, chlorine, and oxygen atoms in 5.90 moles of magnesium perchlorate, Mg(ClO4)2.
Lady bird [3.3K]

Answer:

5.90, 11.8, 47.2

Explanation:

Let’s remove the parentheses and write the formula as MgCl₂O₈.

We see that 1 mol Mg(ClO₄)₂ contains 1 mol Mg atoms, 2 mol Cl atoms, and 8 mol O atoms.

∴ \text{Moles of Mg atoms} = \text{5.90 mol Mg(ClO}_{4})_{2} \times \frac{\text{1 mol Mg atoms}} {\text{1 mol Mg(ClO}_{4})_{2}} = \text{5.90 mol Mg atoms}  

\text{Moles of Cl atoms} = \text{5.90 mol Mg(ClO}_{4})_{2} \times \frac{\text{2 mol Cl atoms}} {\text{1 mol Mg(ClO}_{4})_{2}} = \text{11.8 mol Cl atoms}

\text{Moles of O atoms} = \text{5.90 mol Mg(ClO}_{4})_{2} \times \frac{\text{8 mol O atoms}} {\text{1 mol Mg(ClO}_{4})_{2}} = \text{47.2 mol O atoms}

∴ Mg, Cl, O = 5.90, 11.8, 47.2

4 0
4 years ago
Which of the following is not an example of a mineral crystal shape?
alexandr402 [8]
B. Kryptonite. The reason for this is that it is a nonexistent compound, or if it exists it is manmade and only able to survive for a few second. The suffix -tie indicates that is a bonded with oxygen, which, since Krypton is a noble gas, is impossible. also, crystals are formed from ionic bonds, and since both krypton and oxygen are non-metals, a bond between them would be covalent.
8 0
4 years ago
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