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3 years ago

I am the weight of the atom, I can tell you how many neutrons there are in an atom

Chemistry

1 answer:

andrew-mc [135]3 years ago

8 0

Answer:

Atomic Mass?

Explanation:

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Which is an example of an atom?

xenn [34]

It is A)The smallest unit of Ne

5 0

4 years ago

A 15.0 L tank of gas contained at a high pressure of 8.20 • 10^4 torr. The tank is opened and the gas expands into an empty cham

Kay [80]

Answer:

P₂ = 0.205torr

Explanation:

Boyle's law relates the pressure and volume of a gas under two different conditions. The equation is:

P₁V₁ = P₂V₂

<em>Where P is pressure and V volume of of 1, initial conditions and 2, final conditions.</em>

P₂ is our incognite

Replacing:

P₁V₁ = P₂V₂

8.20x10⁴torr*15.0L = P₂*600x10⁴L

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4 0

3 years ago

What is the Pauli Exclusion Principle?

Fiesta28 [93]

Answer:

the answer is A An atomic orbital can only hold a maximum of 2 electrons, each with opposite spins

Explanation:

3 0

3 years ago

The electron configuration for carbon is:

seropon [69]

Answer:

$1 {s}^{2} 2 {s}^{2} 2 {p}^{2}$

[He] 2s2 2p2

Explanation:

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5 0

2 years ago

The mole fraction of CO2 in a certain solution with H2O as the solvent is 3.6 × 10−4. What is the approximate molality of CO2 in

nataly862011 [7]

Answer: C) 0.020 m

Explanation:

Molality of a solution is defined as the number of moles of solute dissolved per kg of the solvent.

$Molality=\frac{n\times 1000}{W_s}$

where,

n = moles of solute

$W_s$ = weight of solvent in g

Mole fraction of $CO_2$ is = $3.6\times 10^{-4}$ i.e. $3.6\times 10^{-4}$ moles of $CO_2$ is present in 1 mole of solution.

Moles of solute $(CO_2)$ = $3.6\times 10^{-4}$

moles of solvent (water) = 1 - $3.6\times 10^{-4}$ = 0.99

weight of solvent = $moles\times {\text {Molar mass}}=0.99\times 18=17.82g$

Molality = $\frac{3.6\times 10^{-4}\times 1000}{17.82g}=0.020$

Thus approximate molality of $CO_2$ in this solution is 0.020 m

5 0

4 years ago