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VLD [36.1K]
2 years ago
10

Which sample contains the greatest number of atoms? which sample contains the greatest number of atoms? 14 gc 102 gag 49 gcr 202

gpb?
Chemistry
1 answer:
Mashcka [7]2 years ago
8 0
<span>The answer to this question would be: 14g of Carbon
In this question, you are given the weight of the element. Then, to find the number of atoms you need to divide the weight with the molecular mass of the each element. 

14 g c /(12 g/mole)= 1.167 mole
102 g ag </span>/(107 g/mole)= 0.95 mole<span>
49 g cr </span>/(52 g/mole)=  0.94 mole<span>
202 g pb </span>/(207 g/mole)= 0.975 mole
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Elan Coil [88]

Answer:

A. They often use up resources that other organisms need.

Explanation:

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hey reproduce rapidly, <u><em>out-compete native species for food, water and space</em></u>, and are one of the main causes of global biodiversity loss.

5 0
3 years ago
N₂(g) + 3H₂(g) → 2NH3(g)
Anna71 [15]

Answer:

93.5 moles N₂

Explanation:

To find the moles, you need to use the Ideal Gas Law. The equation looks like this:

PV = nRT

In this equation,

-----> P = pressure (atm)

-----> V = volume (L)

-----> n = number of moles

-----> R = constant (0.0821 atm*L/mol*K)

-----> T = temperature (K)

You can plug the given values into the equation and simplify to find moles. The final answer should have 3 sig figs to match the lowest number of sig figs among the given values.

P = 95.0 atm                  R = 0.0821 atm*L/mol*K

V = 224 L                       T = 2773 K

n = ?

PV = nRT

(95.0 atm)(224 L) = n(0.0821 atm*L/mol*K)(2773 K)

21280 = n(227.6633)

93.5 = n

8 0
2 years ago
In breckenridge, colorado, the typical atmospheric pressure is 520. torr. what is the boiling point of water (hvap 40.7 kj/mol)
Art [367]
<span>362.51 Kelvin ln (p1/p2) =( dH / R) (1/T2 - 1/T1) ln (760 Torr /520Torr) =( 40,700 Joules / 8.314 J molâ’1K-1)(1/T2 - 1/373K) ln (1.4615) =( 4895.35)(1/T2 - 0.002681) 0.37946 = 4895.35/T2 - (0.002681)(4895.35) 0.37946 = 4895.35/T2 - (13.124) 0.37946 + 13.124 = 4895.35/T2 13.5039 = 4895.35/T2 T2 = 4895.35 / 13.5039 T2 = 362.51 answer is 362.51 Kelvin - 273 answer is also 89.5 Celsius</span>
4 0
3 years ago
The tarnish that forms on objects made of silver is solid silver sulphide. This can be removed by reacting it with aluminium met
steposvetlana [31]

Answer:

5.83 mol.

Explanation:

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<em>2Al + 3Ag₂S → 6Ag + Al₂S₃,</em>

It is clear that 2 mol of Al react with 3 mol of Ag₂S to produce 1 mol of Ag and 1 mol of Al₂S₃.

Al reacts with Ag₂S with (2: 3) molar ratio.

<em>So, 2.27 mol of Al reacts completely with 3.4 mol of Ag₂S with (2: 3) molar ratio.</em>

<em />

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The reamining moles of excess reactant "Al" = 8.1 mol - 2.27 mol = 5.83 mol.

6 0
3 years ago
How good are you with chemistry
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Answer:

<h2>━☆゚.*・。゚Fine, but not as good</h2>
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