First step: The molar mass of Cd is 112.4 g/mol so 5.1 mmol/L x 112.4 g/mol = 573 mg/L.
The second step depends on what the denominator represents....
JohnS
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Last Activity: Yesterday, 03:25 PM
Joined: 12-20-2007
Location: SE Michigan, USA
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We probably need some context, but I'll take a guess.
30 µm of Hg is a height or length. The only context I can think of is measuring pressure...Leave a comment:
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I am assuming 4ft diameter by 4 foot long. 4 ft = 1.2192 m or 12.192 dm (cubing that will give us liters directly)
Volume is (pi/4)diameter...Leave a comment:
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You also need the depth of water, but
30" x 25" x 1 gallon/231 in³ = 3.25 gallons/inch of water...Leave a comment:
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The total charge must balance electrically. However, I do not see how he could have determined that from the data you provided. Just as an example,...Leave a comment:
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Yes. Three of the four are "tricky," and make me wonder if equivalents are the right approach for gardening. Equivalents were mostly used to...Leave a comment:
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In all cases of conversion between volume and mass, you need to know the density of the material. In the case of lpg, are you measuring the volume as...Leave a comment:
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Yes. The relationship of equivalents to moles is based on a mole of electrons exchanged, either donated or accepted. For many elements (and ions), there...Leave a comment:
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Ppm is an ambiguous term unless the basis of computing it is given; it can be based on mass, volume, or molar ratios or even mass/volume. In this case,...Leave a comment:
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Bulk density varies with particle size, moisture, etc. Dry gravel runs about 1.7 t/m³, wet can exceed 2 t/m³.
Maybe 6 m³ or a bit less. Weight...Leave a comment:
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