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Dmitry_Shevchenko [17]
3 years ago
12

In a classroom, which comparison would a teacher most likely use for describing a mole?

Chemistry
2 answers:
RUDIKE [14]3 years ago
6 0

Answer:

B

Explanation:

a mole is "a chemist's dozen" lol

aksik [14]3 years ago
4 0
B That the answer (hope this helps)
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Give the number of each type of ion present on each of the ionic compounds formed from the following pairs of ions.
SVETLANKA909090 [29]
The following compounds and the number and type of ions are as follows:

Gold and chloride:

Gold (III) = Au 3+
Chloride = Cl 1-

Calcium and Sulfate:

Calcium Sulfate:

Calcium = Ca 2+
Sulfate = SO4 2-

Magnesium and Hydroxide

Magnesium Hydroxide: Mg(OH)2

Magnesium: Mg 2+
Hydroxide: (OH) 1-

8 0
3 years ago
Read 2 more answers
Compare the physical properties of two forms of carbon: diamond and graphite
Mariana [72]

<em>Diamond and graphite are allotropes of carbon  and have various differences in their physical properties.</em>

Explanation:

<u>Diamond:</u>

  1. It is crystalline in nature
  2. Each  Each C is  sp^{3} hybridized and forms 4 covalent binds with neighboring  C atoms
  3. The geometry is tetrahedral
  4. C-C bond length is 154 pm
  5. It has rigid covalent boning which is difficult to break.
  6. It acts as an electric insulator

<u>Graphite:</u>

  1. It has layered structure
  2. Each C atom is sp2  hybridized and forms 3 sigma  bonds with 3 other C atoms. Fourth electron forms pi bond.
  3. The geometry is planar
  4. C-C bond length is 141.5 pm
  5. It is soft. Its layers can be separated easily
  6. It is good conductor of electricity.

This is the comparison of the physical properties of two forms of carbon: diamond and graphite

5 0
3 years ago
The gas in the piston is at constant temperature. A student increases the pressure on the piston from 2 atm to 3 atm. The observ
azamat
Answer : Option B) Row 1, Volume decreases when pressure increases.

Explanation : According to the boyle's law, when the pressure  of the gas molecules are increased from  2 atm to  3 atm creates a decrease in volume of the gas which then increases the rate of collision of the molecules and makes it more compact than it was before.
5 0
3 years ago
Read 2 more answers
How to calculate the mass of copper
faust18 [17]

You can acquire the atomic mass of any chemical element by using the periodic table. I've provided an example on a document below to help you identify the components of an <em>element </em>block from the periodic table. Now if you want to find the mass of an exact amount of a substance you use moles for that. That's why it's called molar mass. To find the molar mass of a substance follow this little guide:

  1. Start with the number of grams of each element given.
  2. Convert the mass of each element to moles utilizing the molar mass from the periodic table.
  3. Divide each mole value by the smallest number of moles deciphered.
  4. Round your answer. This is the mole ratio of the element.

*Use the third document I've inserted below to follow the guide.








<u>*</u><u>All documents used here are property of their respective owners</u><u>*</u>


7 0
3 years ago
Read 2 more answers
Two opposing reaction (a + b c+D) occurring simultaneously
tekilochka [14]

Answer:

redox reaction

Explanation:

it's the only reaction occurs simultaneously, reduction and oxidation occur at the same time

5 0
3 years ago
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