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2 years ago

Paano mo mapapanatili na gumagana ang iyong negosyo sa gitna ng pandemic na ito?

Chemistry

2 answers:

barxatty [35]2 years ago

7 0

Lamaoaoaoaoaoaoaoaoa

gogolik [260]2 years ago

5 0

Tingnan ang pinakamahuhusay na kagawian at patnubay sa pampublikong kalusugan para mapanatiling ligtas ang iyong mga customer at tauhan.

HOPE IT HELPS:)

PLS FOLLOW:)

#BRAINLIEST

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What kind of ions do acids have and what kind of ions do bases produce when you dissolve them in water

natulia [17]

Acids have hydronium ions and when dissolved in water, bases produce hydroxide ions. Hope this helps.

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2 years ago

Which technique reveals latent fingerprints on wooden furniture?

love history [14]

Answer: Nonporous

Explanation: I don’t know if this is right but please correct me!

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2 years ago

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Chlorine has two naturally occurring isotopes, 35C1 Gsotopic mass 34.9689 amu) and 370 (isotopic mass 36.9659 amu). If chlorine

Lilit [14]

Answer: The percentage abundance of $_{17}^{35}\textrm{Cl}$ and $_{17}^{37}\textrm{Cl}$ isotopes are 75.77% and 24.23% respectively.

Explanation:

Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.

Formula used to calculate average atomic mass follows:

$\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i$ .....(1)

Let the fractional abundance of $_{17}^{35}\textrm{Cl}$ isotope be 'x'. So, fractional abundance of $_{17}^{37}\textrm{Cl}$ isotope will be '1 - x'

For $_{17}^{35}\textrm{Cl}$ isotope:

Mass of $_{17}^{35}\textrm{Cl}$ isotope = 34.9689 amu

Fractional abundance of $_{17}^{35}\textrm{Cl}$ isotope = x

For $_{17}^{37}\textrm{Cl}$ isotope:

Mass of $_{17}^{37}\textrm{Cl}$ isotope = 36.9659 amu

Fractional abundance of $_{17}^{37}\textrm{Cl}$ isotope = 1 - x

Average atomic mass of chlorine = 35.4527 amu

Putting values in equation 1, we get:

$35.4527=[(34.9689\times x)+(36.9659\times (1-x))]\\\\x=0.7577$

Percentage abundance of $_{17}^{35}\textrm{Cl}$ isotope = $0.7577\times 100=75.77\%$

Percentage abundance of $_{17}^{37}\textrm{Cl}$ isotope = $(1-0.7577)=0.2423\times 100=24.23\%$

Hence, the percentage abundance of $_{17}^{35}\textrm{Cl}$ and $_{17}^{37}\textrm{Cl}$ isotopes are 75.77% and 24.23% respectively.

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2 years ago

Which species is classified as a Arrenhius base? 1. CH3OH 2. LiOH 3. PO43- 4. CO32-

Otrada [13]

Answer:

2. LiOH

Explanation:

An Arrhenius base is a substance or chemical compound which increases the number of OH- ions when added in water.

LiOH or lithium hydroxide is one of the strong Arrhenius base as it ionizes completely or near-completely in solution. When LiOH is added to water , it dissociates into lithium (Li+) and hydroxide (OH−) ions.

Hence, the correct answer is 2. LiOH.

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2 years ago

Which element will gain only one electron during a chemical reaction?

pashok25 [27]

Answer:

nitrogen

Explanation:

SANA PO MAKATULONG PO YUNG SAGOT NA BINIGAY KO

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2 years ago

Paano mo mapapanatili na gumagana ang iyong negosyo sa gitna ng pandemic na ito?​

Paano mo mapapanatili na gumagana ang iyong negosyo sa gitna ng pandemic na ito?