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Travka [436]
3 years ago
8

Which group iia metal magnesium or calcium is more active cite your evidence?

Chemistry
1 answer:
Burka [1]3 years ago
5 0
Calcium is more active because it is under magnesium on periodic table.
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Which property do metalloids share with non metals?
mamaluj [8]

Answer:

their ability to conduct heat and electricity.

Explanation:

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DDT was banned from use as a pesticide in the United States because
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Too much money and dangerous 
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To dissolve one substance in another, thus forming a solution, three things must occur: The forces holding solute particles toge
aniked [119]

To dissolve one substance, attractions between solute and solvent particles must be formed, steps involved are:

<h3><u>Formation of a solution:</u></h3>
  • A physical process, not a chemical one, takes place when a solute and a solvent combine to produce a solution.
  • In other words, by applying the right separation techniques, both the solute and the solvent may be recovered in chemically unaltered forms.
  • It is claimed that two substances are entirely miscible when they combine to create a single homogenous phase in all ratios. Water and ethanol mix well, much like different gas combinations do.
  • When two substances, like oil and water, are fundamentally insoluble in one another, they are said to be immiscible.
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To know more about solutions, refer to:

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4 0
2 years ago
Which equation represents a neutralization reaction?
abruzzese [7]
C. HNO₃(aq) + KOH(aq) → KNO₃(aq) + H₂O
8 0
3 years ago
Calculate concentration of methylene blue . Give answer in molarity. concentration in ppm=4.8
PSYCHO15rus [73]

Answer:

The molarity of methylene blue is 1.5 × 10⁻⁵ M

Explanation:

When we talk about aqueous solutions, 1 ppm means 1 mg of solute per liter of solution. We need to express this concentration in molarity, which is moles of solute per liter of solution. To convert mass to moles we need the molar mass of methylene blue(MB), which is 320 g/mol.

Then,

\frac{4.8mgMB}{1Lsolution} .\frac{1gMB}{10^{3}mgMB } .\frac{1molMB}{320gMB} =1.5 \times 10^{-5} M

8 0
3 years ago
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