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S_A_V [24]
3 years ago
9

Can someone please answer this and if you dont know dont answer (:

Chemistry
2 answers:
anyanavicka [17]3 years ago
8 0

Answer:  1- Alkali metals

                2- Noble gases

                3- Halogens

Explanation:

Softa [21]3 years ago
8 0

Answer:

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Explanation:

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At what temperature will 0.654 moles of helium gas occupy 12.30 liters at 1.95 atmospheres?
DedPeter [7]

Answer:

447,25k

Explanation:

According to the ideal gas law

PV=nRT

Where:

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V: is the volume of the gas in liters.

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R: ideal gas constant

T: absolute temperature of the gas in kelvin

now using:

T=\frac{PV}{nR}\\ \\T=\frac{12,3L.1,95atm}{0,654mol.0,082(L.atm/K.mol)}\\ \\T=447,25K

3 0
3 years ago
When Niels Bohr refined the model of an atom,what new idea did he include?
pshichka [43]

Answer:

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5 0
3 years ago
Base your answer on the information below. in liquid water, an equilibrium exists between h2o() molecules, h+(aq) ions, and oh–(
kicyunya [14]

Answer:

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Explanation:

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8 0
3 years ago
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6 0
3 years ago
Forces that change an object motion by touching the object are _______ forces
strojnjashka [21]

Forces are pushes and pulls that may change the motion of an object. Balanced forces result in an object remaining at rest or moving at a constant speed. Unbalanced forces result in the acceleration of an object. An object's motion depends on how it changes position.

7 0
3 years ago
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