All categories

3 years ago

Which contains more atom, a mole of silver atoms or a mole of gold atoms?

Chemistry

2 answers:

TiliK225 [7]3 years ago

8 0

I think its gold because it is more dense causing the atoms to gather closer together.

Delicious77 [7]3 years ago

3 0

<span>a mole of gold atoms weighs more than a mole of silver atoms, since gold's atomic mass is 197grams per mole</span>

You might be interested in

One of the reactions that occurs in a blast furnace, in which iron ore is converted to cast iron, is Fe2O3 + 3CO → 2Fe + 3CO2 Su

Tpy6a [65]

Answer : The percent purity of $Fe_2O_3$ in the original sample is 87.94 %

Explanation :

The given balanced chemical reaction is:

$Fe_2O3+3CO\rightarrow 2Fe+3CO_2$

First we have to calculate the mass of Fe.

$\text{Moles of }Fe=\frac{\text{Mass of }Fe}{\text{Molar mass of }Fe}$

Molar mass of Fe = 55.8 g/mole

$\text{Moles of }Fe=\frac{1.79\times 10^3kg}{55.8g/mole}=\frac{1.79\times 10^3\times 1000g}{55.8g/mole}=3.15\times 10^4mole$

Now we have to calculate the moles of $Fe_2O_3$

From the balanced chemical reaction we conclude that,

As, 2 moles of Fe produced from 1 mole of $Fe_2O_3$

So, $3.15\times 10^4mole$ of Fe produced from $\frac{3.15\times 10^4}{2}=15750$ mole of $Fe_2O_3$

Now we have to calculate the mass of $Fe_2O_3$

$\text{ Mass of }Fe_2O_3=\text{ Moles of }Fe_2O_3\times \text{ Molar mass of }Fe_2O_3$

Molar mass of $Fe_2O_3$ = 159.69 g/mole

$\text{ Mass of }Fe_2O_3=(15750moles)\times (159.69g/mole)=2.515\times 10^6g=2.515\times 10^3kg$

Now we have to calculate the percent purity of $Fe_2O_3$ in the original sample.

Mass of original sample = $2.86\times 10^3kg$

$\text{Percent purity}=\frac{\text{Mass of }Fe_2O_3}{\text{Mass of sample}}\times 100$

$\text{Percent purity}=\frac{2.515\times 10^3kg}{2.86\times 10^3kg}\times 100=87.94\%$

Therefore, the percent purity of $Fe_2O_3$ in the original sample is 87.94 %

3 0

3 years ago

Given an atom of Mercury (Hg) which has an atomic number of 80 and an atomic mass of 200, what is the total number of particles

rewona [7]

280 is the total number

7 0

3 years ago

Read 2 more answers

How many atoms of hydrogen are in 210 g of hydrogen peroxide (h2o2)?

Flauer [41]

Molar mass:

$1 \ mol \ H_2O_2 = 34.0147 \ g \ H_2O_2$

Grams to moles:

$(210 \ g \ H_2O_2) * ( \frac{1 \ mol \ H_2O_2 }{34.0147 \ g \ H_2O_2}) = 6.17 \ mol \ H_2O_2$

Moles to atoms (Avogadro's number):
$1 \ mol = 6.022 * 10^{22} \ particles$
$(6.17 \ mol \ H_2O_2) * (\frac{6.022 * 10^{22} \ molecules \ H_2O_2}{1 \ mol \ H_2O_2}) * ( \frac{2 \ atoms \ H}{molecule \ H_2O_2})$

Answer:
$= 7.43 * 10^{23} \ H \ atoms$

5 0

3 years ago

Read 2 more answers

Please explain how you got it too I have to present it tomorrow

Tema [17]