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gizmo_the_mogwai [7]
3 years ago
10

1. Energy appears in two forms. What are they?

Chemistry
1 answer:
noname [10]3 years ago
5 0
Number 1 is C number 2 is B and number 3 is also B
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What mass of carbon dioxide is produced from the complete combustion of 6.00×10−3 g of methane?
Crazy boy [7]

The answer for the following problem is explained below.

  • <u><em>Therefore 16.5 × 10^-3 grams of carbon dioxide is produced from the complete combustion.</em></u>

Explanation:

Given:

mass of methane = 6.00 × 10^-3 grams

CH_{4} + O_{2} → CO_{2} + H_{2}O

Firstly balance the following equation:

Before balancing the equation:

CH_{4} + O_{2} → CO_{2}  + H_{2} O

After balancing the equation:

CH_{4}  + 2O_{2} → CO_{2} + 2 H_{2} O

where;

CH_{4}  represents methane molecule

O_{2} represents oxygen molecule

CO_{2}  represents carbon dioxide molecule

H_{2}O  represents water molecule

 

       CH_{4} +2 O_{2} → CO_{2} + 2H_{2}O

        16  grams of methane       →        44 grams of carbon dioxide

        6 × 10^-3 grams of methane →          ?

                 = \frac{44*6.00*10^{-3} }{16}

          = 16.5 × 10^-3 grams of carbon dioxide is produced from the complete combustion.

<u><em>Therefore 16.5 × 10^-3 grams of carbon dioxide is produced from the complete combustion.</em></u>

5 0
3 years ago
What is the ph of a very acidic solution?
Nadya [2.5K]

Answer:  

pH = -1

Explanation:

A solution of 10 mol·L⁻¹ HCl is very acidic.

HCl is a strong acid, so it dissociates completely in water and

[\text{H}_{3}\text{O}^{+}] = \text{10 mol/L}

To get the pH, you take the negative logarithm of the hydronium ion concentration.  

\text{pH} = -\log{(10)} = -1\\

So, a pH = -1 represents a very acidic solution.

8 0
3 years ago
A recent study has revealed that chlorinated hydrocarbons, gasoline and other volatile organic compounds (VOC's) have become sig
Sedaia [141]

Answer:

ground water / leaking storage tanks

5 0
3 years ago
If the pressure is doubles and the temperature is held constant what will happen to the volume of a gas?
Tresset [83]

Answer:

C

Explanation:

Of course increasing the pressure will reduce the volume

P1V1 = P2V2

P1V1/P2 = V2     WHEN P2 = 2 P1----multiply both sides by 1/2

P1 V1 / 2P1 = 1/2 V2    <===== 1/2 the original

8 0
2 years ago
Which units represent destiny? Select all that apply.
ozzi
The basic units for density is \frac{mass}{volume} and any get of units that has those units in the proper place can be considered a density unit.  The ones that has those specifically are A, B, E and F
7 0
3 years ago
Read 2 more answers
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