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zhuklara [117]
3 years ago
8

3,621.471 in scientific notation?

Chemistry
1 answer:
tiny-mole [99]3 years ago
3 0
That would be 3.621471•10^3
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two critical requirements must be met before light elements, like hydrogen or helium, will fuse and form heavier elements. The t
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Calculate the volume of the gas when the pressure of the gas is 1.60 atm at a temperature of 298 K. There are 160. mol of gas in
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Answer:

2445 L

Explanation:

Given:  

Pressure = 1.60 atm

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Volume = ?

n =  160 mol

Using ideal gas equation as:

PV=nRT

where,  

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V is the volume

n is the number of moles

T is the temperature  

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Applying the equation as:

1.60 atm × V = 160 mol × 0.08206 L.atm/K.mol × 298 K  

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2Al + 6HCl --&gt; 2AlCl3 + 3H2 Aluminium reacts with hydrochloric acid. How many grams of aluminum are necessary to produce 11 L
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Answer:

8.8g of Al are necessaries

Explanation:

Based on the reaction, 2 moles of Al are required to produce 3 moles of hydrogen gas.

To solve this question we must find the moles of H2 in 11L at STP using PV = nRT. With these moles we can find the moles of Al required and its mass as follows:

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PV = nRT; PV/RT = n

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Replacing:

1atm*11L/0.082atmL/molK*273.15K = n

n = 0.491 moles of H2 must be produced

<em />

<em>Moles Al:</em>

0.491 moles of H2 * (2mol Al / 3mol H2) = 0.327moles of Al are required

<em />

<em>Mass Al -Molar mass: 26.98g/mol-:</em>

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