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tensa zangetsu [6.8K]
4 years ago
12

PLEASE HELP ME ASAPPPP

Chemistry
1 answer:
sattari [20]4 years ago
5 0
Boyle’s law gives the relationship between pressure and volume of gases. It states that at constant temperature the pressure of gas is inversely proportional to volume of gas.
PV = k
Where P is pressure V is volume and k is constant
P1V1 = P2V2
Parameters at STP are on the left side and parameters for the second instance are on the right side of the equation
P1 - standard pressure - 1.0 atm
Substituting the values in the equation
1.0 atm x 5.00 L = P x 15.0 L
P = 0.33 atm
New pressure is 0.33 atm
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The  grams of MgCO3 that are needed to make 1.2 l of 1.5M MgCl2  solution  is calculated as below
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find the moles of MgCl2  produced

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by use of mole ratio between MgCO3  to MgCl2 which is 1:1 the moles of MgCo3 is therefore =  1.8moles

mass of MgCo3 =moles  x molar  mass
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<u>Answer:</u> The correct answer is Option B.

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For the given chemical equation:

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