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MaRussiya [10]
2 years ago
7

What is chemical symbol for potassium

Chemistry
2 answers:
grigory [225]2 years ago
7 0
The chemical symbol is K
Vinvika [58]2 years ago
4 0

Answer:

K is the symbol for potassium

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Identify the FALSE statement. You could summarize our Solar System's development by saying that Choose one:
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A student observes chloroplasts in the micrograph of a cell.
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2 years ago
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A piece of material with a mass of 755 g is heated to 84.5 c and added to 50 g of water at 5
lana [24]
Alright sorry you're getting the answer hours later, but i can help with this.
so you're looking for specific heat, the equation for it is <span>macaΔTa = - mbcbΔTb with object a and object b. that's mass of a times specific heat of a times final minus initial temperature of a equals -(mass of b times specific heat of b times final minus initial temperature of b)
</span>so putting in your values is, 755g * ca * (75 celsius - 84.5 celsius) = -(50g * cb * (75 celsius - 5 celsius))
well we know the specific heat of water is always 4180J/kg celsius, so put that in for cb
with a bit of simplification to the equation by doing everything on each side first you have, -7172.5 * ca = -14630000
divide both sides by -7172.5 so you can single out ca and you get, ca= 2039.74
add units for specific heat which are J/kg celsius and the specific heat of the material is 2039.74 J/kg celsius

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3 years ago
Which of the following is the correct definition of chemical energy?
Anna11 [10]

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A

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energy stored in chemical bonds of molecules

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3 years ago
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