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3 years ago

Calculate the weight of 3.491 into 10 to the power 19 molecules of cl2

Chemistry

1 answer:

Rom4ik [11]3 years ago

4 0

Answer:

The mass of 3.491 × 10¹⁹ molecules of Cl₂ of Cl₂ is 4.11 × 10⁻³ grams

Explanation:

The number of particles in one mole of a substance id=s given by the Avogadro's number which is approximately 6.023 × 10²³ particles

Therefore, we have;

One mole of Cl₂ gas, which is a compound, contains 6.023 × 10²³ individual molecules of Cl₂

3.491 × 10¹⁹ molecules of Cl₂ is equivalent to (3.491 × 10¹⁹)/(6.023 × 10²³) = 5.796 × 10⁻⁵ moles of Cl₂

The mass of one mole of Cl₂ = 70.906 g/mol

The mass of 5.796 × 10⁻⁵ moles of Cl₂ = 70.906 × 5.796 × 10^(-5) = 4.11 × 10⁻³ grams

Therefore;

The mass of 3.491 × 10¹⁹ molecules of Cl₂ of Cl₂ = 4.11 × 10⁻³ grams.

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True or false if an object displaces 50 ml of water the object's volume is 50mL

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Answer:

True

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3 years ago

If a 67.3G rock is dissolved in 2.00L of acid, what is the molar concentration of gold in the acid solution

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Answer:

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Explanation:

For this question, we assume the rock is 100 % gold.

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2 years ago

Consider the reaction. 2c(s,graphite) h2= c2h2(g) Based on the equation and the information in the table, what is the enthalpy o

xxTIMURxx [149]

<h3>The enthalpy of the reaction : C.226.73 kJ</h3><h3>Further explanation</h3>

Delta H reaction (ΔH) is the amount of heat change between the system and its environment

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The change in enthalpy in the formation of 1 mole of the elements is called enthalpy of formation

Delta H reaction (ΔH) is the difference between product enthalpy and reactant enthalpy (Hp-Hr)

Reaction :

2C + H2 -> C2H2

(ΔH) reaction = (ΔH) product - (ΔH) reactants

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From the available data: Hf (kJ / mol) C2 H2 (g)= 226.73

then

(ΔH) reaction = ΔH) C2H2 - ((ΔH) C + (ΔH) H2)

(ΔH) reaction = 226.73 - (0 + 0)

(ΔH) reaction = 226.73 (answer C)

<h3>Learn more</h3>

(ΔH) reaction

brainly.com/question/1889660

Keywords : (ΔH) reaction, C2H2

8 0

3 years ago

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13. How many moles of sodium hydroxide are needed to neutralize 50grams of sulfuric acid?

Phoenix [80]

Answer:

1.02mole

Explanation:

The reaction equation is given as:

2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O

Given:

Mass of H₂SO₄ = 50g

Unknown:

Number of moles of NaOH = ?

Solution:

To solve this problem, we first find the number of moles of the acid given;

Number of moles = $\frac{mass}{molar mass}$

Molar mass of H₂SO₄ = 2(1) + 32 + 4(16) = 98g/mol

Now;

Number of moles = $\frac{50}{98}$ = 0.51mole

From the balanced reaction equation:

1 mole of H₂SO₄ will be neutralized by 2 mole of NaOH

0.51 mole of H₂SO₄ will be neutralized by 2 x 0.51 = 1.02mole of NaOH

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2 years ago

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Ronch [10]

3 to balance the calciums on both sides of the equation, but only if that balances the Cl on both sides of the equation to because you now have 6 Cl and 3Ca

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3 years ago

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Calculate the weight of 3.491 into 10 to the power 19 molecules of cl2​

Calculate the weight of 3.491 into 10 to the power 19 molecules of cl2