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Bad White [126]
3 years ago
10

Which chemical equation represents a precipitation reaction?

Chemistry
2 answers:
Kisachek [45]3 years ago
5 0

Answer:

The correct answer is

D.  Li2CO3(aq) + FeCl2(aq) → 2LiCl(aq) + FeCO3(s)

Licemer1 [7]3 years ago
4 0

Answer:- D.  Li_2CO_3(aq)+FeCl_2(aq)\rightarrow 2LiCl(aq)+FeCO_3(s)

Explanations:- In chemical equations, (aq) stands for aqueous, (l) stands for liquid, (g) stands for gas and (s) stands for solid. In double replacement reactions, (aq) means soluble and (s) means insoluble that is precipitate.

Looking at all the equations, it is only the last equation that has a solid product and so this is the only precipitation reaction. A precipitate for Iron(II)carbonate is formed in it.

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Determine the empirical formula for a compound that contains c, h and o. it contains 52.14% c and 34.73% o by mass.
Travka [436]
H %= 100- (52.14 + 34. 73) equals 13.13 %
Assuming 100 g of this compound
Mass H= 13.13 g
Moles H= 13.13 g ÷ 1.008g/ moles= 13

Mass C= 52.14 g
Moles C= 52.14 g ÷ 12.011 g/ moles= 4

The empirical formula is C4H1302
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Based in the rules of John Dalton, what is a possible hypothesis that could be tested in the Atomic Theory lab?
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Atoms that differ only in the number of neutrons are called:
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Hope this helps!
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Answer:

3. An oxygen atom with 8 electrons, 8 protons, and 9 neutrons .

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3 years ago
What is the mole ratio of D to A in the generic chemical reaction? 4A + B --&gt; C + D​
storchak [24]
<h3>Answer:</h3>

Mole ratio of D to A is 1 : 4

<h3>Explanation:</h3>

We are given the generic chemical equation;

4A + B → C + D​

We are supposed to determine the mole ratio of D to A

What is mole ratio?

  • Mole ratio is the ratio of the number of moles of reactants or products in a chemical reaction.
  • We determine the mole ratio using the coefficients of reactants or products in question.

For example;

  • In the equation, 4A + B → C + D​, the coefficient of A is 4 while the coefficient of D is 1.
  • This means, 4 moles of A reacts with 1 mole of b to produce 1 mole of C and 1 mole of D
  • Thus, mole ratio of D to A  is 1 : 4
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3 years ago
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