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3 years ago

What is the name of the molecule below

Chemistry

1 answer:

Yuliya22 [10]3 years ago

3 0

Explanation:

but.......you havent attached a picture?

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How many moles of N2O5 are needed<br> to produce 7.90 g of NO2?

Roman55 [17]

Answer:

0.085 moles of N₂O₅ are needed

Explanation:

Given data:

Mass of NO₂ produces = 7.90 g

Moles of N₂O₅ needed = ?

Solution:

2N₂O₅ → 4NO₂ + O₂

Number of moles of NO₂ produced :

Number of moles = mass/ molar mass

Number of moles = 7.90 g/ 46 g/mol

Number of moles = 0.17 mol

now we will compare the moles of NO₂ with N₂O₅.

NO₂ : N₂O₅

4 : 2

0.17 : 2/4×0.17 = 0.085 mol

Thus, 0.085 moles of N₂O₅ are needed.

4 0

3 years ago

A volume of nitrogen gas has a density of 1.301.30 kg/m3 and a pressure of 1.151.15 atm. Find the temperature of the gas and the

Alexus [3.1K]

Answer :

The temperature of the gas is, 301.7 K

The root mean square speed is, $5.18\times 10^{2}m/s$

Explanation :

To calculate the volume of argon gas we are using ideal gas equation:

$PV=nRT\\\\PV=\frac{w}{M}RT\\\\P=\frac{w}{V}\times \frac{RT}{M}\\\\P=\frac{\rho RT}{M}$

where,

P = pressure of nitrogen gas = 1.15 atm

V = volume of nitrogen gas

T = temperature of nitrogen gas

R = gas constant = 0.0821 L.atm/mole.K

w = mass of nitrogen gas

M = molar mass of nitrogen gas = 28 g/mole

$\rho$ = density of nitrogen gas = $1.30kg/m^3=1.30g/L$

Now put all the given values in the ideal gas equation, we get:

$1.15atm=\frac{(1.30g/L)\times (0.0821L.atm/mole.K)\times T}{28g/mol}$

$T=301.7K$

Therefore, the temperature of the gas is, 301.7 K

Now we have to determine the root mean square speed of the molecule.

The formula used for root mean square speed is:

$\nu_{rms}=\sqrt{\frac{3kN_AT}{M}}$

where,

$\nu_{rms}$ = root mean square speed

k = Boltzmann’s constant = $1.38\times 10^{-23}J/K$

T = temperature = 301.7 K

M = atomic mass of nitrogen gas = 0.028 kg/mole

$N_A$ = Avogadro’s number = $6.02\times 10^{23}mol^{-1}$

Now put all the given values in the above root mean square speed formula, we get:

$\nu_{rms}=\sqrt{\frac{3\times (1.38\times 10^{-23}J/K)\times (6.02\times 10^{23}mol^{-1})\times (301.7K)}{0.028kg/mol}}$

$\nu_{rms}=5.18\times 10^{2}m/s$

The root mean square speed is, $5.18\times 10^{2}m/s$

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3 years ago

Sterling silver contains 92.5 percent silver and 7.5 percent copper. which substance is the solute?

miskamm [114]

<span>Silver is usually alloyed with copper to increase the hardness and strength of sterling silver. Pure silver is relatively soft and prone to tarnishing so other metals like those that copper is used to reduce tarnishing and act as a solute in sterling silver. Copper is usually soluble in most solvents.</span>

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4 years ago

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How is the gobi desert different from the Sahara desert

olga2289 [7]

Answer:

The Gobi gets snow and the sahara doesn't, the sahara is also seven times larger, taking up half a continent unlike the gobi

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