1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nana76 [90]
4 years ago
12

____ Na +____ I2 -----> ____ NaI

Chemistry
1 answer:
astraxan [27]4 years ago
7 0
2Na + I2 —> 2NaI

No. of mol of 4.0g I2 = 4/(35.5x2) = 0.0563

No. of mol of NaI = 2 x 0.0563 = 0.113

No. of molecules of NaI = 0.113 x 6.02 x 10^23 = 6.78 x 10^22
You might be interested in
Name some Changes in matter...
frutty [35]

Answer:

Solid, Liquid, Gas.

Explanation:

Quick gg search.

5 0
2 years ago
Read 2 more answers
Calculate the number of sodium ions, perchlorate ions, Cl atoms and O atoms in 17.8 g of sodium perchlorate. Enter your answers
Degger [83]

17.8 g of sodium perchlorate contains 8.73 × 10²² Na⁺ ions, 8.73 × 10²² ClO₄⁻ ions, 8.73 × 10²² Cl atoms and 3.49 × 10²³ O atoms.

First, we will convert 17.8 g of NaClO₄ to moles using its molar mass (122.44 g/mol).

17.8 g \times \frac{1mol}{122.44g} = 0.145 mol

Next, we will convert 0.145 moles to molecules of NaClO₄ using Avogadro's number; there are 6.02 × 10²³ molecules in 1 mole of molecules.

0.145 mol \times \frac{6.02 \times 10^{23}molecules  }{mol} = 8.73 \times 10^{22}molecules

NaClO₄ is a strong electrolyte that dissociates according to the following equation.

NaClO₄ ⇒ Na⁺ + ClO₄⁻

The molar ratio of NaClO₄ to Na⁺ is 1:1. The number of Na⁺ in 8.73 × 10²² molecules of NaClO₄ is:

8.73 \times 10^{22}moleculeNaClO_4 \times \frac{1 ion Na^{+} }{1moleculeNaClO_4} = 8.73 \times 10^{22}ion Na^{+}

The molar ratio of NaClO₄ to ClO₄⁻ is 1:1. The number of ClO₄⁻ in 8.73 × 10²² molecules of NaClO₄ is:

8.73 \times 10^{22}moleculeNaClO_4 \times \frac{1 ion ClO_4^{-} }{1moleculeNaClO_4} = 8.73 \times 10^{22}ion ClO_4^{-}

The molar ratio of ClO₄⁻ to Cl is 1:1. The number of Cl in 8.73 × 10²² ions of ClO₄⁻ is:

8.73 \times 10^{22}ion ClO_4^{-} \times \frac{1 atomCl }{1ion ClO_4^{-}} = 8.73 \times 10^{22}atom Cl

The molar ratio of ClO₄⁻ to O is 1:1. The number of O in 8.73 × 10²² ions of ClO₄⁻ is:

8.73 \times 10^{22}ion ClO_4^{-} \times \frac{4 atomO }{1ion ClO_4^{-}} = 3.49 \times 10^{23}atom O

17.8 g of sodium perchlorate contains 8.73 × 10²² Na⁺ ions, 8.73 × 10²² ClO₄⁻ ions, 8.73 × 10²² Cl atoms and 3.49 × 10²³ O atoms.

You can learn more Avogadro's number here: brainly.com/question/13302703

8 0
2 years ago
Which of the following statements is true about taste bud preferences?
Dafna1 [17]
It seems that you have missed the necessary options for us to choose from, but anyway, here is the answer. The statement that is considered true about taste bud preferences would be this: The taste buds are located within the papillae of the tongue. Hope this answers your question.
6 0
3 years ago
Elements and compounds are 2 types of what?
GalinKa [24]
I think the answer is atoms.
3 0
3 years ago
Read 2 more answers
29) The antimony in a sample of alloy weighing 0.250 g is converted to Sb2O5 and this substance is ignited to Sb2O4. If the Sb2O
emmainna [20.7K]

Answer:

I think it just h sur rn of sb

6 0
3 years ago
Read 2 more answers
Other questions:
  • A sample of gas contains 6.25 × 10-3 mol in a 500.0 mL flask at 265°C. What is the pressure of the gas in kilopascals? Which var
    13·2 answers
  • Suppose that the pressure of 0.66 L of gas is 424.9 mm Hg when the temperature is 261.2 K. At what temperature is the volume 7.6
    5·2 answers
  • List 3 sedimentary rock structures, and explain how they record geologic processes
    14·1 answer
  • Write the balanced nuclear equation for β− decay of silicon−32. Include both the mass numbers and the atomic numbers with each n
    13·1 answer
  • Heat energy is the transfer of _______ energy.
    15·1 answer
  • The principle of lateral continuity states that rocks are initially laid down flat in all directions. When erosion happens, this
    14·1 answer
  • Chemical weathering processes do not alter the chemical structure of minerals in rocks. *
    10·1 answer
  • Which structure is the naturally occurring form of glucose?
    14·1 answer
  • Which of the following is not true about a nuclear power plant
    5·1 answer
  • What is the valency and symbol of peroxide?​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!