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tatuchka [14]
3 years ago
8

A main group metal was studied and found to exhibit the following properties:

Chemistry
1 answer:
Alecsey [184]3 years ago
6 0

Answer: we learned this not to long ago i think its a,c

Explanation:

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A cylinder and piston assembly (defined as the system) is warmed by an external flame. The contents of the cylinder expand, doin
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Answer:

ΔE = 73 J

Explanation:

By the first law of thermodynamics, the energy in the system must conserved:

ΔE = Q - W

Where ΔE is the internal energy, Q is the heat flow (positive if it's absorbed by the system, and negative if the system loses heat), and W is the work (positive if the system is expanding, and negative if the system is compressing).

So, Q = + 551 J, and W = + 478 J

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How many valence electrons are in a stable ion of a period 4 metal?
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What kind of metal is it
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What is the concentration of a solution with a volume of 2.5 liters containing 600 grams of calcium phosphate?​
trapecia [35]

Answer:

1.12M

Explanation:

Given parameters:

Volume of solution  = 2.5L

Mass of Calcium phosphate  = 600g

Unknown:

Concentration  = ?

Solution:

Concentration is the number of moles of solute in a particular solution.

Now, we find the number of moles of the calcium phosphate from the given mass;

        Formula of calcium phosphate  = Ca₃PO₄

         molar mass = 3(40) + 31 + 4(16) = 215g/mol  

Number of moles of  Ca₃PO₄  = \frac{600}{215}   = 2.79moles

   Now;

  Concentration  = \frac{Number of moles }{volume }  

 Concentration  = \frac{2.79}{2.5}   = 1.12M

7 0
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When you mix copper sulphate solution and steel wool, what is the chemical property that can be observed.
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Explanation:

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