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monitta
3 years ago
10

Niehls Bohr, proposed that electrons must have enough energy to keep them in constant circular motion, which enables them to

Chemistry
1 answer:
ryzh [129]3 years ago
6 0

Answer:

In my opinion B is the best answer

Explanation:

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See the answer and explanation below, please.

Explanation:

The formulas and names of the compunds are:

Na3 P04 (Sodium Phosphate )-->The phosphate suffix corresponds to the highest number of phosphorus oxidation (+5)

Zn PO4 (Zinc Sulfate)-->The phosphate suffix corresponds to the highest number of phosphorus oxidation (+5)

KN03 ( Potassium Nitrate)-->The nitratete suffix corresponds to the highest number of nytrogen oxidation (+5)

Fe 2 (C03)3 (Iron (III) Carbonate / Dihydrous Trioxide / Ferric Carbonate)-->The carbonate suffix corresponds to the highest number of carbon oxidation (+4)

Pb (Co2)2 (Lead carbonate (IV) / Lead trioxocarbonate (IV)))-->The carbonate suffix corresponds to the highest number of carbon oxidation (+4)

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3 years ago
BALANCING CHEMICAL EQUATIONS WORKSHEET
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3 years ago
Using the information in the passage, rank the types of galaxies by their ability to form new stars, from most to least activity
Alex Ar [27]

Answer:

The correct answer is number 2. Elliptical, Spiral, Irregular.

Explanation:

Unfortunately, you did not attach the passage. Without the passage, we do not know what its content is.

So we are going to answer this question with our own knowledge.

The types of galaxies by their ability to form new stars, from most to least activity are "Elliptical, Spiral, Irregular."

That is the way astronomers classify galaxies in scientific terms. These scientists consider that the smallest galaxies or dwarf galaxies have approximately 100 million stars. On the other hand, giant galaxies have billions or trillions of stars. That immense is our universe.

Scientists still studying the universe and the galaxies to understand the way galaxies are formed.

8 0
3 years ago
for the following reaction: 1 CuO + 1 H2 --> 1 Cu +1H2O, what is the quantity of moles of H2O when there are 240 grams of CuO
Ber [7]

Considering the reaction stoichiometry, the quantity of moles of H₂O produced is 3.02 moles.

The balanced reaction is:

CuO + H₂ → Cu + H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:  

  • CuO= 1 mole
  • H₂= 1 mole
  • Cu= 1 mole
  • H₂O= 1 mole

The molar mass of the compounds present in the reaction is:

  • CuO= 79.55 g/mole
  • H₂= 2 g/mole
  • Cu= 63.55 g/mole
  • H₂O: 18 g/mole

Then, by reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of mass of each compound participate in the reaction:  

  • CuO= 1 mole× 79.55 g/mole= 79.55 grams
  • H₂= 1 mole× 2 g/mole= 2 grams
  • Cu= 1 mole× 63.55 g/mole= 63.55 grams
  • H₂O: 1 mole× 18 g/mole= 18 grams

Then, it is possible to determine the moles of H₂O necessary by the following rule of three:  If by reaction stoichiometry 79.55 grams of CuO produces 1 mole of H₂O, 240 grams of CuO produces how many moles of H₂O?

molesofH_{2} O=\frac{240 grams of CuOx 1 mole ofH_{2} O }{79.55 grams of CuO}

<u><em>moles of H₂O= 3.02 moles</em></u>

Finally, the quantity of moles of H₂O produced is 3.02 moles.

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3 years ago
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