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Harlamova29_29 [7]
3 years ago
5

Why do heated molecules rise? a Because they are less dense than the molecules around them b Because they are moving slower than

the other molecules c Because they are denser than the molecules around them
Chemistry
1 answer:
Volgvan3 years ago
7 0

Answer:

A because they are less dense than the molecules around them

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The charge on the most stable ion of zinc​
Natalija [7]
Zinc (Zn) always has a +2 charge. It is one of the exceptions.
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3 years ago
1-Propynyllithium reacts with (R,R)-2,3-dimethyloxacyclopropane in a stereoselective reaction. Draw a curved arrow mechanism and
QveST [7]

Answer:

Reference image attached

Explanation:

Please see the attached image.

6 0
3 years ago
You work for a cutlery manufacturer who wants to electrolytically precipitate 0.500 g of silver onto each piece of a batch of 25
ICE Princess25 [194]

Answer:

373.1 mL of AgCN (aq) must be poured into your electrolysis vat to ensure you have sufficient Ag to plate all of the forks.

Explanation:

Mass of silver to be precipitated on ecah spoon = 0.500 g

Number of silver spoons = 250

Total mass of silver = 250 × 0.500 g = 125 g

Moles (n)=Molarity(M)\times Volume (L)

Moles of AgCN = n  = \frac{125 g}{134 g/mol}=0.9328 mol

Volume of AgCN solution =V

Molarity of the AgCN = 2.50 M

V=\frac{0.9328 mol}{2.50 M}=0.3731 L=373.1 mL

(1 L = 1000 mL)

373.1 mL of AgCN (aq) must be poured into your electrolysis vat to ensure you have sufficient Ag to plate all of the forks.

6 0
4 years ago
When 3.0 mol Al react with 7.0 mol HCl, what is the limiting reactant and how many moles of H2 can be formed?
inysia [295]
HCl is the limiting reactant, and 3.5 mol H2<span> can be formed</span>
6 0
3 years ago
How many moles of Na₂CO₃ required to create 9.54 liters of a 3.4 M solution
GarryVolchara [31]

Answer:

The answer to your question is 32.44 moles

Explanation:

Data

moles of Na₂CO₃ = ?

volume = 9.54 l

concentration = 3.4 M

Formula

Molarity = \frac{number of moles}{volume}

Solve for number of moles

number of moles = Molarity x volume

Substitution

Number of moles = (3.4)( 9.54)

Simplification

Number of moles = 32.44

3 0
3 years ago
Read 2 more answers
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