timmclark timmclark

10-10-2019
Chemistry

contestada

SiO2 + 4HF = SiF4 + 2H2O, what mass of HF is necessary to produce 12.91g of the SiF4?

Respuesta :

gbustamantegarcia054 gbustamantegarcia054

11-10-2019

Answer:

mass HF = 9.928 g

Explanation:

SiO2 + 4HF = SiF4 + 2H2O

∴ Mw SiO4 = 104.0791 g/mol

∴ Mw HF = 20.01 g/mol

⇒ mol HF = 12.91 gSiF4 * (mol SiF4 / 104.0791 g) * (4 mol HF / mol SIF4) = 0.496 mol

⇒ mass HF = 0.496 mol HF * ( 20.01 g HF / mol HF ) = 9.928 g HF

Answer Link

Otras preguntas

How many protons electrons and neutrons does the following isotopes contain 1H+

Simplify...Urgent pls

What is One tenth of 72?

convert 0.70 hours to minutes round answer to the nearest tenth

Why did coloniats feel the articles of confederation were necessary even though the declaration of independence was aalready written

The relationship between two numbers is described below, where x represents the first number and y represents the second number.The square of the first number i

What is the mass of a bowling ball?

A small software corporation borrowed $ 250,(000) to expand its software line. The corporation borrowed some of the money at 9%, some at 10%, and some at 12%. U

The human body is 0.0040% iron. How many milligrams of iron does a 165 pound person contain?

Personification is used in which of the following statements? A. He was holding in his hands the Holy Grail of card collectors everywhere. B. She flashed him a