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grigory [225]
3 years ago
9

What coefficient would balance the following equation ch4+_O2--> CO2+2H2O

Chemistry
1 answer:
Daniel [21]3 years ago
6 0

\qquad\qquad\huge\underline{{\sf Answer}}

The balanced chemical equation for the shown reaction is :

\qquad \tt  \:CH_4 + 2 \:  O_2 \rightarrow CO_2 + 2 \:  H_2O

Where, coefficient of

  • \textsf{CH4 is 1}

  • \textsf{O2 is 2}

  • \textsf{CO2 is 1}

  • \textsf{H2O is 2}
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I believe it is C. I hope
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Which factor increases the amount of water runoff?
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D. impermeable rocks

Explanation:

Impermeable rocks is the factor among the give choices that will increase the amount of water runoff on the surface.

Surface run-off is liquid water that flows and moves on the earth surface.

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4 years ago
When 280. mL of 1.50 × 10⁻⁴ M hydrochloric acid is added to 135 mL of 1.75 × 10⁻⁴ M Mg(OH)₂, the resulting solution will be?
goldfiish [28.3K]

Answer:

B is the correct answer!

Explanation:

Balanced equation is Mg(OH)2 + 2 HCl = MgCl2 + 2 H2O

HCl  is the limiting reactant because it gives the smaller amount of  MgCl2 I did the math. This means you will be left with Mg(OH)2 since HCl completely runs out.

If  HCl  is the limiting reactant,  Mg(OH) 2  is the excess reactant.

Mg(OH) 2  is a base, so the solution will be basic.

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3 years ago
Owls do most of their hunting during the night and they have specialized cells in their eyes that provide good night vision. The
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3. How many grams are in 9.015 x 1035 atoms of Cobalt?​
pentagon [3]

Answer:

8.822 × 10¹³ g Co

General Formulas and Concepts:

<u>Chemistry - Atomic Structure</u>

  • Reading a Periodic Table
  • Using Dimensional Analysis
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Explanation:

<u>Step 1: Define</u>

9.015 × 10³⁵ atoms Co

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

Avogadro's Number

Molar Mass of Co - 58.93 g/mol

<u>Step 3: Convert</u>

<u />9.015 \cdot 10^{35} \ atoms \ Co(\frac{1 \ mol \ Co}{6.022 \cdot 10^{23} \ atoms \ Co} )(\frac{58.93 \ g \ Co}{1 \ mol \ Co} ) = 8.82189 × 10¹³ g Co

<u>Step 4: Check</u>

<em>We are given 4 sig figs. Follow sig fig rules and round.</em>

8.82189 × 10¹³ g Co ≈ 8.822 × 10¹³ g Co

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3 years ago
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