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Elenna [48]
3 years ago
11

5x^2 + 3×^2-x+7xHelp plz​

Chemistry
1 answer:
PSYCHO15rus [73]3 years ago
3 0

Answer:

5x^2 + 3x^2 -x +7x

5x^2+3x^2+6x = 8x^2+6x

factorize it to get

2x(4x+3)

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Why does increasing the temperature affect the rate constant for a reaction?
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Answer:

Hope this answer helps I don't know for sure which one it is but here is some information.

Explanation:

Increasing the temperature increases the kinetic energy of reactant molecules. Therefore they move around more and they move faster. As a result, collisions between reactant molecules are more frequent and the energy at which they collide is also sufficient enough to overcome the activation energy of the reaction. Hence a greater proportion of reactant molecules successfully collide, leading to an increase in the rate of reaction.

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3 years ago
Which of the following statements about Earth's inner core is true?
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3 years ago
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Heat and pressure deep beneath Earths Surface any rock into
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 METAMORPHIC ROCK                is if its correct 
                                                                                                                                                                                                                                             
5 0
3 years ago
If you have 1.005 x 1024 molecules of Ca(OH)2 how many atoms do you have? Moles? Grams?
ira [324]

Answer:

  • 5.025x10²⁴ atoms
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Explanation:

In one Ca(OH)₂ molecule, there are 5 atoms (1 Ca, 2 O and 2 H). This means that in 1.005x10²⁴ Ca(OH)₂ molecules, there are (5 * 1.005x10²⁴) 5.025x10²⁴ atoms.

To <u>convert molecules into moles</u>, we use <em>Avogadro's number</em>:

  • 1.005x10²⁴ molecules * \frac{1mol}{6.023*10^{23}molecules} = 1.6686 moles

Finally, we <u>convert moles into grams</u> using the <em>molar mass of Ca(OH)₂</em>:

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4 0
3 years ago
The distance between a carbon atom and an oxygen atom in the co molecule is how far from the carbon atom is the center of mass o
DENIUS [597]

The distance between a carbon atom and an oxygen atom in the co molecule is 0.63

<h3>What is the distance?</h3>

Distance is the measurement of the farness of two objects from each other.

The distance between the molecules can be calculated by the given formula

xcm = m_1+m_2m_1\times 1+m_2 \times 2

Putting the values in the equation

xcm = 12+1612 \times 0+16 \times 1.1 = 0.63 A^\circ

Thus, the distance between a carbon atom and an oxygen atom in the co molecule is 0.63

Learn more about distance

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