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horrorfan [7]
3 years ago
9

Of the following gases, ______ will have the greatest rate of effusion at a given temperature.A) NH3B) CH4C) ArD) HBrE) HCl

Chemistry
1 answer:
s344n2d4d5 [400]3 years ago
7 0

Answer:

CH₄

Explanation:

According to Graham's law, <em>the rate of effusion of a gas (r) is inversely proportional to the square root of its molar mass (M)</em>.

Let's consider the following gases and their molar masses.

A) NH₃    17.03 g/mol

B) CH₄    16.04 g/mol

C) Ar       39.95 g/mol

D) HBr    80.91 g/mol

E) HCl     36.46 g/mol

Of these gases, CH₄ will have the greatest rate of effusion at a given temperature because it has the lowest molar mass.

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Convert the following to number of moles: 4.03 x 10^21 molecules present in AgNO3
castortr0y [4]
Moles = 4.03 x 10^21
             ------------------------
                6.02 x 10^23
 
           =      6.69 x 10^-3 moles.
Hope this helps!


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The physical chemical and biological laws operate today also operate in the do you want it past the statement relate to the prin
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3 years ago
Which compound has both ionic and covenant bonds
Mashutka [201]

Answer:

Calcium carbonate is another example of a compound with both ionic and covalent bonds.

Explanation:

In chemistry, an ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding. The compound is neutral overall, but consists of positively charged ions called cations and negatively charged ions called anions.

7 0
3 years ago
Solid solution are called:
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Answer:

Chemical solution in solid form; whose solvent's crystal structure is not altered by solute

Explanation:

7 0
3 years ago
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iragen [17]
An aqueous solution of potassium sulfate exhibits colligative properties. Colligative properties are properties that depends on the concentration of a substance in a solution. These properties are freezing point depression, vapor pressure lowering, osmotic pressure and boiling point elevation. For this problem we use the concept of freezing point depression since we are given the freezing point of the solution. Freezing point depression is as:
 
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Thus, the molality of the solution is 0.4014.</span>
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