In a compound, chemical energy is _______________ when bonds break.

Chemistry

1 answer:

IRISSAK [1]3 years ago

7 0

I think its B, however not 100% sure. Hope that helped, sort of

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What is the wavelength (in nm) of light with a frequency of- ^^ see picture

Dafna1 [17]

Frequency =6.75×10^14s^{-1}

$\\ \sf\longmapsto \lambda=\dfrac{c}{v}$

$\\ \sf\longmapsto \lambda=\dfrac{3\times 10^8m/s}{6.75\times 10^{14}s^{-1}}$

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which words best describe the following characteristic? 69.2 kg of a substance? a. extensive, quantitative b. intensive, qualita

marshall27 [118]

The correct answer is A. Extensive, quantitative

Explanation:

A property is classified as extensive if it varies with the amount of the substance; this applies to mass, which is measured in grams or kilograms, because depending on the size of the sample the mass changes, therefore "69.2 kg" is an extensive characteristic. Besides this, quantitative characteristics or properties are those that can be measured through numbers; this also applies to mass because a specific number of grams or kilograms shows the exact mass in the substance, in this case, the value is 69.2 kg. Thus, this characteristic is both extensive and quantitative.

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How many feet are contained in .399 km

stiks02 [169]

1309.0551181 feet are contained in .399 km

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4 years ago

If the [H+] in a solution is 1 × 10–1 mol/L, what is the [OH–]? Show your work.

AVprozaik [17]

Hello!

The basic equations to solve this is
pH = -log[H+]
pOH = -log[OH-]
pH + pOH = 14
------------------------------------------------------------------------------------------------------
Find pH

pH = -log(1 * 10^-1)
pH = 1
------------------------------------------------------------------------------------------------------
Find pOH
1 + pOH = 14

pOH = 13
------------------------------------------------------------------------------------------------------
Find OH-
[OH-] = 10^(-pOH)
[OH-] = 1 * 10^-13mo/L

The answer is $[OH-] = 1 * 10^{-13} mol/L$

Hope this helps!

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I believe it is "empirical formula"

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