4 years ago

Calculate zeff for a valence electron in an oxygen atom. express your answer numerically.

1 answer:

5 0

<span>Answer: 8 - 3.45 = 4.55 And (theoretically of course) if there were more problems like this, the answers would probably be something like this: B) 29 - 25.30 = 3.70 C) 29 - 21.15 = 7.85 D) 1.effective nuclear charge</span>

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When 40g of ammonium nitrate explode 14g of nitrogen and 8g of oxygen form. How many grams of water form?

blagie [28]

answer and Explanation:

the same amount would have to stay in grams, so if 14 grams of nitrogen is formed, then 8 grams of oxygen, add those two together and you get 22. and that's 22 of the 40 grams used, so 40 su

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3 years ago

In a chemical equation the sum of the masses

monitta

The sum of the masses of the reactants must equal the sum of the masses of the products; as required by
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3 years ago

2 Which is NOT a function of the skeletal system? A. It gives support to your body. B. It protects your internal organs. C. Bone

timofeeve [1]

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Explanation:

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3 years ago

What pressure is required to achieve a co2 concentration of 7.90×10−2 m at 20∘c?

Savatey [412]

Answer:- 1.90 atm

Solution:- It is based on combined gas law equation, PV = nRT

In this equation, P is pressure, V is volume, n is moles of gas, R is universal gas constant and T is kelvin temperature.

If we divide both sides by V then:

$P=\frac{nRT}{V}$

We know that, molarity is moles per liter. So, in the above equation we could replace $\frac{n}{V}$ by molarity, M of the gas. The equation becomes:

P = MRT

T = 20 + 273 = 293 K

M = $7.9*10^-^2$

Let's plug in the values in the equation:

P = $(7.9*10^-^2)(0.0821)(293)$

P = 1.90 atm

So, the pressure of the gas is 1.90 atm.

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4 years ago

if you were one of the immigrants, would you willingly submit to have yourself undergone x-ray to prove yourself being a minor?

MariettaO [177]

Answer:

I'm pretty sure this is a question about your opinion so there is no wrong answer! Just think about the question and if you were in those shoes. There is no right or wrong answer! :)

Explanation:

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3 years ago