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grandymaker [24]
3 years ago
8

Which of the following did you include?

Chemistry
1 answer:
natulia [17]3 years ago
5 0

Answer:

The formula of ammonium fluoride is NH4F.

Explanation:

1 The atoms in each ion are bonded together covalently to form a single unit.

Wrong!

⇒ The atoms in an ion compound are linked together by an ionic bond.

2 The charge is distributed over the entire ion.

Wrong!

Ions have taken in or given up electrons. This happens in the atomic shell.

3 The formula of ammonium fluoride is NH4F.

Right!

4 The formula of potassium sulfate is K2SO

Wrong!

The formula for potassium sulfate is K2SO4.

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olga2289 [7]

Answer:

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Explanation:

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3 years ago
What is the velocity of a electron whose wavelength is 100 pm?
Anni [7]

Answer:

v = 7.3 × 10⁶ m/s

Explanation:

Given data:

Velocity of electron = ?

Wavelength = 100 pm

Solution:

Formula:

λ = h/mv

λ = wavelength

h = planck's constant

m = mass

v = velocity

Now we will put the values in formula.

100 ×10⁻¹² m = 6.63 × 10⁻³⁴ j.s / 9.109 × 10⁻³¹ kg ×  v

v = 6.63 × 10⁻³⁴ kg.m²/s /  9.109 × 10⁻³¹ kg ×100 ×10⁻¹² m

v = 6.63 × 10⁻³⁴ m/s /910.9 × 10⁻⁴³

v = 0.0073  × 10⁹ m/s

v = 7.3 × 10⁶ m/s

5 0
3 years ago
Calculate the mass percent composition of lithium in Li3PO4.
tino4ka555 [31]

Answer:

B) 17.98 %

Explanation:

3 Li =21  P = 31     4O  64  == 116

21/116=18.1%  

Closest 17.98

4 0
3 years ago
Which of the following is a property of water a. polar molecule b. regulates temperature c.universal solvent d. all of the above
Vladimir [108]
The answer is the letter c
3 0
2 years ago
Read 2 more answers
Most of the sulfur used in the United States is chemically synthesized from hydrogen sulfide gas recovered from natural gas well
Harlamova29_29 [7]

Answer: Rate of production of Sulfur dioxide is 0.15kg/s to 2 significant digits

Note: The question is incomplete. The complete question is as follows:

<em>Most of the used in the United States is chemically synthesized from hydrogen sulfide gas recovered from natural gas wells. In the first step of this synthesis, called the Claus process, hydrogen sulfide gas is reacted with dioxygen gas to produce gaseous sulfur dioxide and water Suppose a chemical engineer studying a new catalyst for the Claus reaction finds that 198. liters per second of dioxygen are consumed when the reaction is run at 186. °C and 0.69 atm. Calculate the rate at which sulfur dioxide is being produced. Give your answer in kilograms per second. Round your answer to 2 significant digits.</em>

Explanation:

The balanced equation of the reaction between hydrogen sulfide gas and dioxygen gas to produce sulfur dioxide and water is as follows:

2H₂S(g) + 3O₂(g) ---> 2SO₂(g) + 2H₂O(g)

<em>From the equation above, 3 moles of dioxide yields 2 moles of sulfur dioxide.</em>

Using the ideal gas equation to determine the number of moles of dioxygen present in 198 litres of the gas at 186. °C and 0.69 atm;

PV = nRT,

where P = 0.69atm, V = 198Litres, R (molar gas constant) = 0.082atmLK⁻¹mol⁻¹, T = 186. °C = 459K

<em>n = PV/RT</em>

n = 0.69*198*/(0.082*459)

n =  3.63moles of dioxygen

Therefore, 3.63 moles of dioxygen are consumed per second

Using the mole ratio from the equation of reaction,

<em>number of moles of sulfur dioxide produced will be 3.63moles * 2/3 = 2.42moles</em>

Therefore, the number of moles of sulfur dioxide consumed is 2.42 moles per second.

Converting to kilograms per second,

1 mole of sulfur dioxide weighs 64g (molar mass of sulfur dioxide)

<em>2.42 moles weighs 2.42*64g =154.88g or 0.15488Kg which is approximately 0.15Kg</em>

Therefore, rate of production of Sulfur dioxide is 0.15kg/s to 2 significant digits

8 0
3 years ago
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