All categories

3 years ago

15g of magnesium (II) oxide decomposes, find the number of oxygen particles produced at 100% yield.

Chemistry

1 answer:

erastova [34]3 years ago

6 0

2.258625 *10²³ oxygen atoms will be produced.

<h3><u>Explanation:</u></h3>

Decomposition reaction is defined as the type of reaction where one single reactant breaks to produce more than one product only by means of heat or other external factor.

Formula of magnesium oxide = MgO.

The molecular mass of magnesium oxide = 24 +16= 40.

So in 40 grams of magnesium oxide, number of molecules is 6.023 * 10²³.

So in 15 grams of magnesium oxide,, number of molecules is 6.023 *1023 * 15/40 = 2.258625 *10²³.

From one molecule of magnesium oxide, one oxide atom will be produced.

So number of oxide atoms with 100% yeild = 2.258625 *10²³

You might be interested in

PLEASE HELL ASAP WILL GIVE BRAINLEAST TI CORRECT ANSWER

xxTIMURxx [149]

Answer:

Rabbbits are scared so if there is an increase in the snake population they would try and hide and run from it bur hawks also prey on rabbits but not every hawk so Im going with bthe snake answer .

Explanation:

6 0

3 years ago

. Where are gamma rays on the electromagnetic spectrum in terms of energy and frequency? Describe relative to other EM waves.

elena-14-01-66 [18.8K]

Explanation:

Gamma rays are the electromagnetic waves that have the highest frequency and the lowest wavelength compared to all other electromagnetic waves.

f = 300 EHz

$\lambda=1\ pm$

In terms of frequency the order of frequency is

Gamma rays > X rays > Ultraviolet > Visible > Infrared > high frequency > low frequency > Extremely low frequency

In terms of wavelength the order is the opposite of the frequency

Gamma rays < X rays < Ultraviolet < Visible < Infrared < high frequency < low frequency < Extremely low frequency

7 0

3 years ago

Question14 of 20If 5.15 g FeCl3 is dissolved in enough water to make exactly 150.0 mL of solution, what is the molar concentrati

Serhud [2]

Answer: 0.635 M

Explanation:

Molarity : It is defined as the number of moles of solute present per liter of the solution.

Formula used :

$Molarity=\frac{n\times 1000}{V_s}$

where,

n= Moles= $\frac{\text{Given mass}}{\text{Molar mass}}=\frac{5.15g}{162.4g/mol}=0.0317moles$

$V_s$ = volume of solution = 150 ml

$Molarity=\frac{0.0317\times 1000}{150ml}=0.2114M$

$FeCl_3\rightarrow Fe^{3+}+3Cl^-$

as 1 mole of $FeCl_3$ gives 3 moles of $Cl^-$ ions

Thus molarity of $Cl^-$ = $3\times 0.2114=0.635M$

Molarity of $Cl^-$ = 0.635 M

8 0

3 years ago

Spooky, scary skeletons

konstantin123 [22]

Answer:

I LOVE THIS OMG

8 0

3 years ago

Read 2 more answers

Consider the elements: Na, Mg, Al, Si, P.

Olegator [25]

Answer:

The elements mentioned in the series are Na, Mg, Al, Si, and P. It can be seen that all these elements are located in the same period. The atomic number of the mentioned elements are Na-11, Mg-12, Al-13, Si-14, and P-15.

a) There will be an increase in the ionization energy with the increase in the element's atomic number across a period. More energy is needed to withdraw an electron from a completely occupied shell in comparison to an incompletely occupied shell.

The atomic number of Na is 11. When one electron is withdrawn from Na, it gets converted into the inert gas configuration of Ne. Thus, it will require more energy to withdraw the second electron from Na. Hence, Na exhibits the lowest second ionization energy.

b) Across the period, with an increase in the element's atomic number, the atomic radii reduces from left to right. Thus, P exhibits the smallest atomic radius.

c) The metallic nature of the elements reduces from left to right across a period in the periodic table. Thus, P is the least metallic element.

d) Diamagnetic signifies towards the element that exhibits pair electrons in its sub-shells. The electronic configuration of Mg is,

1s2 2s2 2p6 3s2

In Mg, no unpaired electrons are present, while all the remaining elements mentioned exhibit unpaired electrons in their valence shell. Thus, Mg is the diamagnetic element.

8 0

3 years ago