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pochemuha
3 years ago
8

2. What is the percent composition of Mg(IO3)2?

Chemistry
1 answer:
Nataly [62]3 years ago
4 0

Answer:

Mass percentage 6.4967

Explanation:

I had some study notes

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non-metals

they don't conduct heat

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2 years ago
Which is an example of a solution?
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Answer is c. salt and water
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A weather balloon contains 1.10X10 to the power of 5 mol of helium and has a volume of 2.70x10 to the power of 6 L at 1.00 atm p
olchik [2.2K]

Answer:

299.14 K or 26°C

Explanation:

The ideal gas law, also called the general gas equation, is the equation of state of a hypothetical ideal gas.

The ideal gas law is often written as

PV = nRT

where P ,V and T are the pressure, volume and absolute temperature;

n is the number of moles of gas and  R is the ideal gas constant.

n=1.10 x 10^5 mol  

V= 2.70 x 10^6 L  

P= 1.00 atm= 101.325 kPa  

R= 8.314 kPa*L/ mol*K

when the formula is  rearranged, T=PV/ nR  

T = (101.325kPa * 2.70 x 10^6 L)/ (1.10 x 10^5 mol * 8.314 kPa*L/ mol*K)  

T = 299.1421917 K

or

T = 299.14 - 273.15 = 25.99 =  26°C

4 0
3 years ago
As a 7 inch candle burns down, its height decreases 1/2 inch each hour. How many hours does it take for the candle to burn compl
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14

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One balloon was only partly filled when put on the plane. During the flight, the balloon volume
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Answer:

P₂ = 0.8 atm

Explanation:

Given data:

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P₁ = Initial pressure

V₁ = Initial volume

P₂ = Final pressure

V₂ = Final volume

Now we will put the vales in formula.

P₁V₁ = P₂V₂

P₂ = P₁V₁ /V₂

P₂ = 1 atm × 7 L / 9 L

P₂ = 7 atm. L / 9 L

P₂ = 0.8 atm

7 0
2 years ago
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