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marta [7]
4 years ago
6

Isotopes of the same element have different _____

Chemistry
1 answer:
joja [24]4 years ago
6 0

Answer:

The answer is 1.

Explanation: Isotopes are the elements that have the same atomic number but different mass number. The atomic number is the total number of protons that each atom of that element has. This number gives identity to the element, that is, that each chemical element has its atomic number. And the periodic table is ordered in increasing order of atomic number. If in the isotopes the atomic number does not change, they have the same position in the periodic table.

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Match each molecular formula to the corresponding empirical formula.
lawyer [7]

Explanation:

C₄H₈O₂                      C₂H₄O

C₄H₁₂O₄                       CH₃O

C₂H₁₀O₂                      CH₅O

The empirical formula is that which expresses the composition of a compound in the simplest whole number ratio of the atoms of the different elements that makes up a compound.

The molecular formula is the true formula of the compound. It expresses the actual number of moles of atoms of the different elements present in a molecule of the compound.

C₄H₈O₂                      C₂H₄O

4: 8 : 2 divided by 2 gives 2: 4 : 1

C₄H₁₂O₄                       CH₃O

4: 12: 4  divided by 3 gives 1: 3: 1

C₂H₁₀O₂                      CH₅O

2: 10: 2 divided by 2 gives 1: 5: 1

learn more:

Empirical formula brainly.com/question/2774727

#learnwithBrainly

5 0
4 years ago
11. As early as 1938. the use of NaOH was suggested as a means of removing CO2 from the cabin of a spacecraft according to the f
vagabundo [1.1K]

For a (unbalanced) reaction: NaOH +CO2-Na2CO3 + H2O, the moles of NaOH and moles of each product are formed are mathematically given as

a) Moles of NaOH =44.05

b)   Moles of Na2CO3=21.0

  • Moles of H2O= 21.0

<h3>What is the moles of NaOH and what moles of each product are formed?</h3>

Generally, the equation for the Chemical reaction  is mathematically given as

2 NaOH(aq)+ CO2(g)------> Na2CO3(aq)+ H2O(l)

Therefore

Moles of CO2= 925/44

Moles of CO2=21.0

Hence

Moles of NaOH = 2 x Moles of CO2

Moles of NaOH = 2x925/44

Moles of NaOH =44.05

In conclusion

Moles of Na2CO3 925/44

Moles of Na2CO3=21.0

And

Moles of H2O= 925/44

Moles of H2O= 21.0

Read more about Chemical reaction

brainly.com/question/16416932

3 0
2 years ago
If the temperature changes by 100 K, by how much does it change in °C?
m_a_m_a [10]
The temperature changes by <span>#-173 ^(o) C#</span>
5 0
4 years ago
Read 2 more answers
Carbon dioxide and water vapor help to prevent _______ from escaping from Earth
kotykmax [81]
Heat. Energy in a more general way.
8 0
4 years ago
Read 2 more answers
The air bags in automobiles were once inflated by nitrogen gas generated by the rapid decomposition of
Basile [38]

Answer:

1.57 mol NaN₃

Explanation:

  • 2 NaN₃ (s) → 2 Na (s) + 3 N₂ (g)

First we <u>use PV=nRT to calculate the number of N₂ moles that need to be produced</u>:

  • P = 1.07 atm
  • V = 53.4 L
  • n = ?
  • R = 0.082 atm·L·mol⁻¹·K⁻¹
  • T = 23.7 °C ⇒ 23.7 + 273.16 = 296.86 K

<u>Inputing the data</u>:

  • 1.07 atm * 53.4 L = n * 0.082 atm·L·mol⁻¹·K⁻¹ * 296.86

And <u>solving for n</u>:

  • n = 2.35 mol N₂

Finally we <u>convert N₂ moles into NaN₃ moles</u>, using <em>the stoichiometric coefficients of the balanced reaction</em>:

  • 2.35 mol N₂ * \frac{2molNaN_3}{3molN_2} = 1.57 mol NaN₃
4 0
3 years ago
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