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monitta
3 years ago
7

Now that we have put a coefficient of 3 in front of caso4, what coefficient should go in front of cacl2 to balance calcium (ca)?

Chemistry
2 answers:
julsineya [31]3 years ago
4 0

Answer:

3 (three).

Explanation:

Hello,

Perhaps, you are talking about the following undergoing chemical reaction:

CaSO_4+AlCl_3-->CaCl_2+Al_2(SO_4)_3

Thus, balancing it by inspection, one obtains:

3CaSO_4+2AlCl_3-->3CaCl_2+Al_2(SO_4)_3

In such a way, a 3 (three) must be placed in front of the calcium chloride CaCl_2 in order to balance calcium and consequently the rest of the chemical reaction.

Best regards.

Ronch [10]3 years ago
3 0
3 to balance the calciums on both sides of the equation, but only if that balances the Cl on both sides of the equation to because you now have 6 Cl and 3Ca 
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<h3>Answer:</h3>

150 g Si

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
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  • Left to Right<u> </u>

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<u>Stoichiometry</u>

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<h3>Explanation:</h3>

<u>Step 1: Define</u>

[Given] 3.2 × 10²⁴ atoms Si

[Solve] grams Si

<u>Step 2: Identify Conversions</u>

Avogadro's Number

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<u>Step 3: Convert</u>

  1. [DA] Set up:                                                                                                       \displaystyle 3.2 \cdot 10^{24} \ atoms \ Si(\frac{1 \ mol \ Si}{6.022 \cdot 10^{23} \ atoms \ Si})(\frac{28.09 \ g \ Si}{1 \ mol \ Si})
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<u>Step 4: Check</u>

<em>Follow sig fig rules and round. Instructed to round to 2 sig figs.</em>

149.266 g Si ≈ 150 g Si

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