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Kazeer [188]
3 years ago
10

How many grams of water are needed to react with 44.9 grams of li2o?

Chemistry
1 answer:
german3 years ago
4 0
The  grams  of  water   needed  to  react  with  44.9  grams  of Li2O  is  calculated as  follows 

write  the  equation  for  reaction
Li2O  +H2O  = 2LiOH

find  the  moles  of  Li2O  =  mass/molar   mass
=  44.9/29.9  =  1.5  moles

by  use  of  reacting  ratio  between   Li2O to  H2O  which  is  1:1  the  moles  of  H2O  is  therefore =  1.5  moles

mass  is  therefore  =  moles  x molar  mass
= 1.5 mol  x 18 g/mol  =  27  grams

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Explanation:

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3 years ago
what is the limiting reactant when 1.50g of lithium and 1.50 g of nitrogen combine to form lithium nitride, a component of advan
PSYCHO15rus [73]
<h3>Answer:</h3>

Limiting reactant is Lithium

<h3>Explanation:</h3>

<u>We are given;</u>

  1. Mass of Lithium as 1.50 g
  2. Mass of nitrogen is 1.50 g

We are required to determine the rate limiting reagent.

  • First, we write the balanced equation for the reaction

6Li(s) + N₂(g) → 2Li₃N

From the equation, 6 moles of Lithium reacts with 1 mole of nitrogen.

  • Second, we determine moles of Lithium and nitrogen given.

Moles = Mass ÷ Molar mass

Moles of Lithium

Molar mass of Li = 6.941 g/mol

Moles of Li = 1.50 g ÷ 6.941 g/mol

                   = 0.216 moles

Moles of nitrogen gas

Molar mass of Nitrogen gas is 28.0 g/mol

Moles of nitrogen gas = 1.50 g ÷ 28.0 g/mol

                                     = 0.054 moles

  • According to the equation, 6 moles of Lithium reacts with 1 mole of nitrogen.
  • Therefore, 0.216 moles of lithium will require 0.036 moles (0.216 moles ÷6) of nitrogen gas.
  • On the other hand, 0.054 moles of nitrogen, would require 0.324 moles of Lithium.

Thus, Lithium is the limiting reagent while nitrogen is in excess.

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The region where an electron is most likely to be is called an orbital
6 0
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Answer:

Either Carnivores or Heterotrophic.

Explanation:

Carnivorous organisms are the more obvious answers in this, but if you want a bit of pizazz, throw in Heterotrophic Fungi.

7 0
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