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olya-2409 [2.1K]
3 years ago
14

Describe general characteristics of potassium

Chemistry
1 answer:
Virty [35]3 years ago
6 0
Leg crams are symptoms of lack of potassium
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44.90 g of reactants are placed in a beaker
sergiy2304 [10]

Answer:

D. -1882J

Explanation:

We can solve the energy released in a chemical reaction in an aqueous medium using the equation:

Q = -m*C*ΔT

<em>Where Q is energy (In J),</em>

<em>m is mass of water (45.00g)</em>

<em>C is specific heat of water (4.184J/g°C)</em>

<em>And ΔT is change in temperature (25.00°C - 15.00°C = 10.00°C)</em>

<em />

Replacing:

Q = -45.00*4.184J/g°C*10.00°C

Q = -1882J

Right answer is:

<h3>D. -1882J</h3>

<em />

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Answer:

The answer is E,B,A,C,D

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3 years ago
How many molecules are there in 80.0g of Mg (OH)2?​
DanielleElmas [232]

Answer:

8o/58*6*10power23 gives u the answer. molecules=moles*avagadrono

moles=weight/molecular wt

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Explanation:

thank me later

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Ca + HCl -&gt; CaCl2 + H2 Li + H2O -&gt; LiOH + H2 NH3 + O2 -&gt; NO + H2O K + O2 -&gt; K2O
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Answer:

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