How many moles of chlorine are in 100 g chlorine (cl)?

Type the correct answer in the box. Given: SiO2 4HF → SiF4 2H2O In this chemical reaction, how many grams of HF are needed for 1

Tresset [83]

The mass of the substance is the product of the molar mass and the moles of the substance in the compound. The amount of the HF required in the reaction is 242 gm.

<h3>What is the relation of the mass and moles?</h3>

Mass is given as the product of the moles of the substance and of the molar mass of the substance in the compound.

Given,

Molar mass of Silicon dioxide = 60g/mol

mass of Silicon dioxide = 182 g

Molar mass of HF = 20 g/mol

Moles of the Silicon dioxide can be calculated as,

$\begin{aligned}\rm Moles &= \rm \dfrac{mass}{molar\;mass}\\\\&= {182}{60}\\\\&= 3.03\end{aligned}$

The balanced chemical reaction can be shown as,

$\rm SiO_{2} + 4HF \rightarrow SiF_{4} + 2H_{2}O$

From the reaction, it can deduce that,

1 mole of silicon dioxide reacts with 4 moles of HF

So, 3.03 moles of silicon dioxide reacts with 12.12 moles of HF

Mass of HF can be calculated as,

$\begin{aligned}\text{mass of HF} &= \rm moles \times \rm molar \; mass\\\\&= 12.12 \times 20\\\\&= 242 \;\rm g\end{aligned}$

Therefore, the reaction requires 242 gm of HF.

Learn more about mass here:

brainly.com/question/11558651

4 0

2 years ago

A chemist reacted 12.0 liters of F2 gas with NaCl in the laboratory to form Cl2 gas and NaF. Use the ideal gas law equation to d

Vlad [161]

Answer:

The mass of NaCl needed for the reaction is 91.61 g

We'll begin by calculating the number of mole of F₂ that reacted.

Volume (V) = 12 L

Temperature (T) = 280 K

Pressure (P) = 1.5 atm

Gas constant (R) = 0.0821 atm.L/Kmol

Number of mole (n) =?

PV = nRT

1.5 × 12 = n × 0.0821 × 280

18 = n × 22.988

Divide both side by 22.988

n = 18 / 22.988

n = 0.783 mole

Next, we shall determine the mole of NaCl needed for the reaction.

F₂ + 2NaCl —> Cl₂ + 2NaF

From the balanced equation above,

1 mole of F₂ reacted with 2 moles of NaCl.

Therefore,

0.783 mole F₂ will react with = 0.783 × 2 = 1.566 moles of NaCl.

Finally, we shall determine the mass of 1.566 moles of NaCl.

Mole = 1.566 moles

Molar mass of NaCl = 23 + 35.5 = 58.5 g/mol

Mass of NaCl =?

Mass = mole × molar mass

Mass of NaCl = 1.566 × 58.5

Mass of NaCl = 91.61 g

Therefore, the mass of NaCl needed for the reaction is 91.61 g

Explanation:

8 0

2 years ago

Which measurable property of potassium can be used to support this statement: "Matter can be subdivided to the atomic level whil

Trava [24]

C i think is the correct answer

8 0

3 years ago

Chemistry-Griffin

IgorLugansk [536]

Answer:no

Explanation:

5 0

3 years ago

Calculate the wavelength of the first line in the lymen series of hydrogen spectrum

Natali [406]

Since the electron is de-exited from 1(st) exited state (i.e n=2) to ground state (i.e n=1) for first line of Lyman series. Since the atomic number of Hydrogen is 1. λ = 4/3⋅912 A. 1/R = 912 A

3 0

3 years ago