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umka2103 [35]
4 years ago
7

Oxygen atoms have six outer electrons Write the symbol for an oxide ion.

Chemistry
1 answer:
Shkiper50 [21]4 years ago
7 0

Answer:

O^{2-} is the symbol for an oxide ion

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True or false: chemical reactions are usually written left to right
nika2105 [10]

Answer:

true. e.g

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8 0
2 years ago
Read 2 more answers
A gas evolved during the fermentation of alcohol had a volume of 19.4 L at 17 °C and 746 mmHg. How many moles of gas were collec
AlexFokin [52]

Answer:- 0.800 moles of the gas were collected.

Solution:- Volume, temperature and pressure is given for the gas and asks to calculate the moles of the gas.

It is an ideal gas law based problem. Ideal gas law equation is used to solve this. The equation is:

PV=nRT

Since it asks to calculate the moles that is n, so let's rearrange this for n:

n=\frac{PV}{RT}

V = 19.4 L

T = 17 + 273 = 290 K

P = 746 mmHg

we need to convert the pressure from mmHg to atm and for this we divide by 760 since, 1 atm = 760 mmHg

P=746mmHg(\frac{1atm}{760mmHg})

P = 0.982 atm

R = 0.0821\frac{atm.L}{mol.K}

Let's plug in the values in the equation to get the moles.

n=\frac{0.982atm*19.4L}{0.0821\frac{atm.L}{mol.K}*290K}

n = 0.800 moles

So, 0.800 moles of the gas were collected.

4 0
4 years ago
what is the strongest type of intermolecular forces present between a stearic acid molecule and a water molecule?
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Hydrogen bonding and dipole-dipole forces.
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How does a tiny seed turn into a tree overtime?
12345 [234]

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A group of cells ready to form roots a stem and the first leaves

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Is radium flammable?
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Answer:

no

Explanation:

Radium is silvery, lustrous, soft, intensely radioactive. It readily oxidizes on exposure to air, turning from almost pure white to black. Radium is luminescent, corrodes in water to form radium hydroxide. Although is the heaviest member of the alkaline-earth group it is the most volatile.

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