brittzabala92 brittzabala92

23-10-2017
Chemistry

contestada

Calculate the number of grams of silane gas, SiH4, formed when 34.9 g of Mg2Si reacts with excess H2O.

Respuesta :

akiyama316 akiyama316

04-11-2017

Mg2Si + 2H2O → 2Mg(OH)2 + SiH4

So, moles of Mg2Si = 34.9 / 76.7 = 0.455

So, mole of SiH4 form = 0.455 (according to the equation)

Mass of SiH4 = 0.455 x 32.12 = 14.6 g

Answer Link

Otras preguntas

hi po pahelp ito pls pls pls pls pls pls pls

The diameter of Mars is approximately 6779 km. The thickness of its atmosphere is approximately 140 km. What is the approximate volume of Mars atmosphere? Round

The four main groups of macromolecules are carbohydrates, lipids, proteins. Identify each type of macromolecule based on its monomer.

34-18-(-23) write as a single number

A line passes through the point (2, 4) and has a slope of -5/2

He overwhelmed the boxer with avalanches of punches metaphor or similes

The daily change in barometic pressure for 4 days are: .05, .09, .04, and .18 inches. What is the mean change?

Hello, I need help with this problem.

what happened after Pocahontas met John smith

1. What is Vernacular? 2. What was the Prince About? 3. Who was Johann Gutenberg? What did he invent?