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kipiarov [429]
3 years ago
10

Four properties of water are listed.

Chemistry
1 answer:
scoray [572]3 years ago
4 0
It is colorless and oderless is a physical property by telling what color.
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Please describe the structure of the atom. How is the atom related to protons, neutrons and
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Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).
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2 years ago
Please help I will mark as brainliest........
Gala2k [10]

Answer:

vegetables and salt

Explanation:

The ideal temperature for fermenting vegetables is between 18⁰-22⁰C. Within this range, the bacteria do their best work, giving high levels of lactic acid. The naturally occurring bacteria on fruits and vegetables is called <em>lactobacillus</em><em>.</em><em> </em>These bacteria convert the sugar to lactic acid, which is what gives that characteristic tangy/sour taste.

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3 years ago
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Which term identifies a form of energy
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Not sure what options I have but I have one term that identifies a form of energy which is “Energy is found in different forms, such as light, heat, sound and motion. There are many forms of energy, but they can all be put into two categories: kinetic and potential” Hope this helps.
7 0
3 years ago
Write the merits and demerits of Mendeleev periodic table in points and explain each of them in short​
elena-14-01-66 [18.8K]

Answer:

merits of mendeleev periodic table are:

  1. it was first scientific and systamatic study of different element.
  2. there were may gaps for in discovered elements.After their discovery the got their proper place in table.
  3. with the help of mendeleev periodic table , properties of several elements were studied correctly.

demerits of mendeleev periodic table

  1. it could not arrange hydrogen as it shows the property of both alkali and halogens.
  2. it could not arrange isotopes because they have different atomic weight but same atomic number.
  3. it could not arrange Lanthanides and Actinides.

hope these points helped you

need more points then comment it .

6 0
2 years ago
10) How many grams are there in 1.00 x 10^24 molecules of BC13?
lana66690 [7]

194.5 g of BCl₃ is present in 1 × 10²⁴ molecules of BCl₃.

Explanation:

In order to convert the given number of molecules of BCl₃ to grams, first we have to convert the molecules to moles.

It is known that 1 moles of any element has 6.022×10²³ molecules.

Then 1 molecule will have \frac{1}{6.022*10^{23} } moles.

So 1*10^{24} molecules = \frac{1*10^{24} }{6.022*10^{23} } =1.66 moles

Thus, 1.66 moles are included in BCl₃.

Then in order to convert it from moles to grams, we have to multiply it with the molecular mass of the compound.

As it is known as 1 mole contains molecular mass of the compound.

As the molecular mass of BCl₃ will be

Molecular mass of BCl_{3}= Mass of Boron + (3*Mass of chlorine)

Mass of boron is 10.811 g and the mass of chlorine is 35.453 g.

Molar mass of BCl₃ = 10.811+(3×35.453)=117.17 g.

grams of BCl_{3}=Molar mass of BCl_{3}*Number of moles

grams of BCl_{3}=117.17*1.66=194.5 g

So, 194.5 g of BCl₃ is present in 1 × 10²⁴ molecules of BCl₃.

3 0
3 years ago
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