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geniusboy [140]
3 years ago
6

How many molecules of nitrogen gas are in 15 L of nitrogen gas

Chemistry
1 answer:
uranmaximum [27]3 years ago
5 0

Answer:

3.98\times 10^{23}

Explanation:

Since we have $N_A$ number of molecules in 22.4 L, in 15 L we have:

$\frac{15}{22.4}\times 6.023 \times 10^{23}$ molecules.

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Canadian chemists have developed a modern variation of the 1899 Mond process for preparing extremely pure metallic nickel. A sam
Gnoma [55]

There are 1952.31g of nickel can be converted to the carbonyl with 3.55 m³ of CO at 100.7 kPa.

Given data

The reaction can be written as:

Ni+4CO ⟶Ni(CO)_{4}

V(CO)=3.55m^{3}

T=50°C=323.5K

p=100700Pa

Now, use the formula:

pV=nR*T  

Where, P is pressure, V is volume and T is temperature.                         n=p∗V / R∗T

n=100700∗3.55  / 8.314∗323.15

It is known that,

n(CO)=133.059mol                            

n(Ni)=n(CO)/4=33.26mol

Mass can be determined by the formula:

Mole = mass / molar mass

Now, put the value of given data in above formula:

m(Ni)=nAr=33.26mol/58.69g/mol      

m(Ni)=1952.31g

To know more about carbonyl here

brainly.com/question/22211758

#SPJ4

3 0
2 years ago
The dirigible Hindenburg had 3.7E6 m3 of hydrogen in its gas bags at 1.1 atm and 7°C. What was the weight of the hydrogen in pou
zepelin [54]
Assuming that the gas is ideal, we can use the ideal gas equation PV=nRT to calculate for the number of moles. Then, multiply the molar mass of the gas to obtain the mass. We do as follows:

PV = nRT
n = PV / RT
n = 1.1 atm (3.7x10^9 L) / 0.08205 L-atm/mol-K (280.15) = 177061931.3 mol H2

Mass = (177061931.3 mol H2) 18.02 g/mol ( 1 kg / 1000g) ( 2.2 lb / 1 kg ) = 7019443.21 lb H2
4 0
3 years ago
what is the molarity of a solution of sodium hydroxide if it 15.0 mL requires 25.0 ml of 0.25M HCl to reach the end point
DaniilM [7]

Answer:

0.42 M

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

HCl + NaOH —> NaCl + H₂O

From the balanced equation above,

The mole ratio of acid, HCl (nₐ) = 1

The mole ratio of base, NaOH (n₆) = 1

Finally, we shall determine the molarity of the base, NaOH. This can be obtained as follow:

Volume of acid, HCl (Vₐ) = 25 mL

Molarity of acid, HCl (Mₐ) = 0.25 M

Volume of base, NaOH (V₆) = 15 mL

Molarity of base, NaOH (M₆) =?

MₐVₐ / M₆V₆ = nₐ/n₆

0.25 × 25 / M₆ × 15 = 1

6.25 / M₆ × 15 = 1

Cross multiply

6.25 = M₆ × 15

Divide both side by 15

M₆ = 6.25 / 15

M₆ = 0.42 M

Therefore, the molarity of the base, NaOH is 0.42 M

6 0
3 years ago
Why is the solar system often referred to as the sun’s family ?
snow_tiger [21]

Answer:the suns family is stars think about how many stars are in the sky there are billons and more billions

Explanation:

7 0
3 years ago
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1. A sample of radon has a half-life of 15 hours. What fraction of the sample is left
Hitman42 [59]
I think I learned this
4 0
3 years ago
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