bethHimiche bethHimiche

11-06-2016
Chemistry

contestada

Solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. How many molecules of hydrogen gas are formed when 48.7 g of sodium are added to water? The euation is as follows :- 2Na + 2H2O --> 2NaOH + H2

Respuesta :

kammykoo83 kammykoo83

11-06-2016

2Na + 2H2O ----> H2 + 2Na(OH)

48.7/23 = 2.12 moles sodium
2.12/2 x 24 = 25.44dm^3 hydrogen = 1.06 moles

1.06 X 6.02x10^23 = 1.204x10^24 molecules of hydrogen

Answer Link

Otras preguntas

what is a function equation

A record rotates at a constant velocity of 33rpm. Through what angle will the record rotate.

Which best describes the area of a polygon?

The landing for the steps leading up to a county courthouse is shaped like a trapezoid. The area of the landing is 1500 square feet. The shorter base of the tra

Imagine you are giving a speech to your class about reasons why the United States rapidly formed over a dozen states in the West between 1850 and 1900. Which ev

Hamas has held political power for Palestinians since 2006. Hamas has said it is open to peace talks if Israel removed itself and lifts restrictions on all Pale

Which characteristic describes the antagonist in a story

Why is the concluding statement in this paragraph effective? It explains how text messaging makes a crash twenty-three times more likely to happen. It shows

India is home to many of the world's oldest and most popular religions. Name at least three religions practiced in India, including the most commonly practiced.

Refer to Explorations in Literature for a complete version of this narrative. In "The Light of Gandhi's Lamp," Hilary Kromberg Inglis writes about how she feel