Chromium has a positive charge (it's a multivalent metal with multiple positive charges)
Carbonate has a negative charge (-2)
Chromium would be the cation, and carbonate would be the anion.
Answer:
Smell: Most chemists can identify solvents by their distinctive smells (though this is a pretty bad idea). ¹
Melting point: If you've got very pure crystals, you can use their melting point to figure out which of several possible chemicals you've got.
Explanation:
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Answer: 319.9g
Explanation:
Mass of graduated cylinder with water = 534.26g
Mass of graduated cylinder = 214.36g
Mass of just water = Mass of graduated cylinder with water - Mass of graduated cylinder.
Mass of just water = 534.26g - 214.36 g = 319.9g
Molar mass Argon ( Ar ) = 39.95 g/mol
39.95 g ---------------- 6.02 x 10²³ atoms
0.377 g ---------------- ( atoms Ar )
( atoms Ar ) = 0.377 x ( 6.02 x 10²³ ) / 39.95
( atoms Ar ) = 2.26954 x 10²³ / 39.95
= 5.68 x 10²¹ atoms Ar
hope this helps!
The amount of Al required will be 15.77 grams
<h3>Stoichiometric problem</h3>
First, the equation of the reaction:
The mole ratio is 2:3.
Mole of 63.0 g of FeO = 63/71.84 = 0.8769 moles
Equivalent moles of Al = 0.8769 x 2/3 = 0.5846 moles
Mass of 0.5846 moles Al = 0.5846 x 26.98 = 15.77 grams
More on stoichiometric problems can be found here: brainly.com/question/14465605
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