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OleMash [197]
4 years ago
11

How do you solve a combustion reaction

Chemistry
1 answer:
Zinaida [17]4 years ago
3 0
First, balance the carbon and hydrogen atoms on both sides of the equation.Then, balance the oxygen atoms. ...Finally, balance anything that has become unbalanced.
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Which substance increases in solubility as the temperature decreases?
Arlecino [84]
NH₃ would.  This is because of the fact that ammonia is a molecular gas while the other options are ionic crystals.  Crystals increase in solubility when the temperature increases while gases increase in solubility while temperatures deceases.

I hope this helps.  Let me know in the comments if anything is unclear or if you want me to explain anything is more detail.
7 0
3 years ago
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Find the molality of this aqueous solution 15.0% by mass kBr (119g/mol).
Vsevolod [243]

Answer:

we will take a 100g sample of this solution for our convenience

so , there is 15 g kBr in this 100g solution

we know that molality is the number if moles of solute / mass of solvent in kg

we need to find the number of moles in 15g kBr

no of moles = 15/119 s

moles  = 0.126 moles/ 100g

multiplying both the numerator and the denominator by 10 to get 1 kg in denominator

=  1.26 moles / 1 kg

Hence, the molality is 1.26

would appreciate a brainliest

3 0
4 years ago
When you blow dry your hair is it physical or chemical change
viva [34]
When you blow dry your hair you will get a physical change 

8 0
4 years ago
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Use the reaction N2(g) + 3H2(g) 2NH3(g) to answer the following questions
kumpel [21]

Answer:

Explanation:

a ) If N₂(g) and 3H₂(g) is added to the system , 2 moles of additional  ammonia will be produced .

b ) If pressure is decreased , less amount of ammonia will be formed, because forward reaction reduces the pressure. So, reaction will take place in reverse direction.

c ) Keq = [ NH₃ ] ² / [ N₂ ] [ H₂]³

d ) Substituting the given values in the equation ,

Keq = [ 6M ] ² / [ 3M] [ 4M]³

= 36 / 3 x 64 M⁻²

= 18.75 x 10⁻² M⁻² .

6 0
3 years ago
What is the partial pressure of water vapor in an air sample when the total pressure is 1 atm, the partial pressure of nitrogen
vivado [14]
The partial pressure of water in 1 atm is 0.24 atm
5 0
3 years ago
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