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4 years ago

How many protons, neutrons, and electrons are in a neutral atom of sodium?

Chemistry

1 answer:

sdas [7]4 years ago

8 0

11 electrons , 11 protons , 12 neutrons.

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Assignment<br>Explain why it is not advisable to wear<br>black silky cloth in the sun

Crazy boy [7]

Answer:

It is not water absorbant and also the colour black, due to it's dark nature makes the person wearing the cloth feel hot. Unlike cotton, silk is not at all water absorbant as it does not absord any sweat produced in the wearers body

3 0

3 years ago

Chemical formula name for V2(SO2)3 (aq) explain why

goldenfox [79]

This is the chemical doula for salt which is a polyatomic anion very prevalent in out daily lives e.g.

Salts, acid derivatives, and peroxides of sulfate are widely used in industry.

3 0

3 years ago

Workout the formula for:<br>Magnesium Bromide <br>Potassium Chloride

madam [21]

Magnesium bromide= MgBr2
Potassium chloride= KCl

8 0

3 years ago

How many moles are in 20 grams of O₂ gas?

Dima020 [189]

20 g O2 x 1 mol O2/32 g O = 0.625 mol O2

4 0

3 years ago

Consider these reactions:

Virty [35]

511.2 grams of chlorine gas consumed (with excess H-) when

1,342.0 kJ of energy is released from the system.

<h3></h3><h3>What is an exothermic reaction?</h3>

In thermochemistry, an exothermic reaction is a "reaction for which the overall standard enthalpy change ΔH⚬ is negative."

Given that 1 mole of chlorine releases -184.6 energy.

Then, we have to find the number of moles of chlorine when 1,342.0 kJ of energy is released from the system.

So, calculating number of moles of chlorine.

Moles = $\frac{-1,342.0 \;kJ}{-184.6\;kJ}$

Moles = 7.2 mole

Now, calculating number mass of chlorine.

$\rm Moles=\rm\frac{Mass}{Molar \;mass}$

Mass = 7.2 mole x 71 g/mole

Mass = 511.2 gram

Learn more about exothermic reaction here:

brainly.com/question/10373907

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3 0

3 years ago