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2 years ago

What does the atmoic weight 1 in hydrogen tell scientists

Chemistry

2 answers:

ivann1987 [24]2 years ago

6 0

The atomic number is equal to the number of protons in an atom because of nucleus

Paul [167]2 years ago

3 0

Explanation:

The atomic number is equal to the number of protons in an atom's nucleus. Hydrogen's atomic number is 1 because all hydrogen atoms contain exactly one proton.

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Reading glasses use what property of light waves to help people see better

Pepsi [2]

Reading glasses helps with the Refraction of the light.

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2 years ago

Which phrases describe all the outer planets' motion? Check all that apply.

viktelen [127]

answer:fast rotation. 2. explanation: I choose this as my answer because when the outer planets orbit it move faster

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2 years ago

hat is the pressure of CO(g) in equilibrium with the CO2(g) and O2(g) in the atmosphere at 25 ????C? The partial pressure of O2(

Lubov Fominskaja [6]

Answer:

The partial pressure of CO is 5.54x10⁻⁴⁹atm. You shouldn't worry because it is very low pressure

Explanation:

First, the balanced reaction is:

CO + 1/2O₂ → CO₂

The energies of formation are:

ΔG(CO)=-137.168kJ/mol

ΔG(O₂)=0

ΔG(CO₂)=-394.359kJ/mol

The energy of the reaction is:

$delta-G_{reaction} =delta-G_{CO_{2} } -(delta-G_{CO} +1/2delta-G_{O_{2} } )\\delta-G_{reaction}=-394.359-(-137.168+0)=-257.191kJ/mol$

The expression for calculate the partial pressure of CO is:

$p_{CO} =\frac{p_{CO2} }{p_{O_{2} }^{1/2}*exp^{-\frac{delta-G}{RT} } } \\p_{CO}=\frac{3x10^{-4} }{0.2^{1/2}*exp(-\frac{-257.191*1000}{8.314*298} ) } \\p_{CO}=5.54x10^{-49} atm$

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2 years ago

Which of these subatomic particles adds the most mass to an atom?

vivado [14]

The answer for the first question is A. Proton is the subatomic particles which adds most of the mass of an atom as well as the neutron since they have the same mass. Photon, on the other hand, is not one of the subatomic particles.

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3 years ago

MARKING BRAINLEIST!!

anastassius [24]

Answer:

B: They are the results of many experiments over a long period of time.

Explanation:

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2 years ago

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