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Scrat [10]
3 years ago
10

When C3H8 burns completely in an excess of oxygen , the products formed are?

Chemistry
1 answer:
Marizza181 [45]3 years ago
6 0
Water and carbon dioxide respectively

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PLEASE HELP!
Scilla [17]

Answer:

P₂ = 450 kiloPascals

Explanation:

Boyle's law :))

P₁V₁ = P₂V₂

300*75 = P₂*50

P₂*50= 300*75

P₂ = 300*75/50 = 450

P₂ = 450 kiloPascals

<em>The weight has expanded because of pressure of gas.</em>

8 0
3 years ago
Two friends are arguing about the structure of the universe. Caleb says that the universe is made of many galaxies that are made
kiruha [24]
I think that Maria is wrong
6 0
3 years ago
Energy from a reaction was determined to be 3870 J using a water calorimeter, when burning 9.00 grams of H­2. What is the total
Paraphin [41]

Answer:

860 J / mol

Explanation:

Enthalpy = Energy / no. of moles

no. of moles = mass / molar mass

Take the atomic mass of H = 1.0,

molar mass of H2 = 1.0 x 2

= 2.0

no. of moles of H2 = 9.00/2

= 4.5 mol

Hence,

Enthalpy = 3870 / 4.5

=860 J / mol

7 0
3 years ago
Calculate the hydroxide ion concentration in an aqueous solution with a poh of 9.85 at 25°c.
LenaWriter [7]
 The  hydrogen ion concentration  is  calculated  as follows

Ph  +  POh  =14
ph= 14-9.85= 4.15

anti  -H+

=anti (-4.15)  = 7.07 x10^-5  moles per liter
7 0
3 years ago
Read 2 more answers
A sample of gas occupying 350 mL at 25 C is cooled to -25 C. What volume will it occupy if the pressure is held constant?
leonid [27]

Answer:

I hac no ideasghjjbhnn

7 0
3 years ago
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