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DaniilM [7]
3 years ago
10

How many significant figures are in 28.6 g

Chemistry
2 answers:
Alex787 [66]3 years ago
8 0
There are no zeros, so all three digits<span> are significant.</span>
<span>b. 3440.</span>
rewona [7]3 years ago
5 0
There are 3 significant figures in 28.6g :)

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Newton's Law of Gravity says that any the effect of gravity between two objects depends on what two factors?
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2 years ago
Give two uses of compound under each of the following, in medicine and in industry​
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Explanation:

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3 years ago
How to prepare super saturated solution of copper sulphate ? Explain the experiment
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6 0
2 years ago
Which of the following is not a correct chemical equation for a double displacement reaction?
Step2247 [10]

Answer:

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It should be CaCl2 + Li2CO3  → 2LiCl + CaCO3

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1) There must be an interchange of the group of ions

2) The reactants must dissolve in water to release ions

A. 2RbNO3 + BeF2 yields Be(NO3)2 + 2RbF

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This is correct

B. CaCl + LiCO3 yields CaCO3 + LiCl

This is not correct

The correct equation is:

CaCl2 + Li2CO3  → Ca2+ + 2Cl- + 2Li+ + CO3^2-  → 2LiCl + CaCO3

C. Na3PO4 + 3KOH yields 3NaOH + K3PO4

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D. 2MgI2 + Mn(SO3)2 yields 2MgSO3 + MnI4

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8 0
3 years ago
In general, in what type of solvent (non-polar, moderately polar, or highly polar) are polar solutes most soluble? Explain why.
tia_tia [17]

Answer:

  • In general, polar solutes are most soluble in highly polar solvents.

Explanation:

The general rule is "like dissolves like" which means that <em>polar solvents </em>dissolve polar (or ionic) <em>solutes</em> and <em>non-polar solvents</em> dissolve non-polar solutes.

In order for a solvent dissolve a solute, the strength of the interacttion (force) between the solute and the solvent units (atoms, molecules, or ions) must be stronger than the strength of the forces that keep together he particles of the pure substances (known as intermolecular forces).

Since the nature of the interactions between the units are electrostatic, the more polar is the solvent the better it will be able to attract and surround the solute particles, keeping them separated and in solution. That mechanism explains why polar solutes will be most soluble in highly polar solvents.

5 0
2 years ago
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