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poizon [28]
4 years ago
12

Question 6 if a gas pressure gauge reads 32.0 psi, what is the pressure in inches of mercury? 165 in. hg 15.7 in. hg 65.1 in. hg

32.0 in. hg 6.19 in. hg
Chemistry
1 answer:
MA_775_DIABLO [31]4 years ago
5 0
Psi and in.Hg are both units used to measure pressure. 
psi stands for pounds per square inch and in.Hg stands for inches in mercury.
1 psi is equivalent to 2.036 in.Hg
therefore 32.0 psi is equivalent to 2.036 in.Hg /psi x 32.0 psi = 65.1 in.Hg
therefore answer is 65.1 in. Hg
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If you only have 36.5 grams of Potassium Carbonate (K2CO3 molar mass = 138.2 g/mole). How many liters of a 0.52 M solution can y
kirza4 [7]

Answer:

0.508 L of solution.

Explanation:

Always a safe bet to convert to moles:

n= {m \over MM}\\

Where n is moles, m is mass, and MM is molar mass.

Now remember the equation for concentration (molarity):

C={n \over V}

Where C is the concentration, n is moles, and V is volume.

To make this easy, combine the two equations (note n appears in both, so you can do a substitution) and solve for V as the question asks:

C={m \over MM \times V}\\0.52={36.5 \over 138.2 \times V}\\V={36.5 \over 138.2 \times 0.52}\\V=0.508

Therefore we can make 0.508 L of solution.

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f 4.2 moles of copper metal react with 6.3 moles of silver nitrate, how many moles of silver metal can be formed, and how many m
alex41 [277]
<span>1. Balance the reaction
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How many moles of excess reactant will be left?
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