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vlada-n [284]
3 years ago
13

What is the hardest subject u ever taking, mine is chemistry

Chemistry
1 answer:
artcher [175]3 years ago
7 0

Answer:

Mine is language arts brainliest?

Explanation:

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What is the charge of the hydride ion?​
Semenov [28]

Answer:

Negative 1.

Explanation:

Negative 1:-  H-.

Examples of Hydrides are KH, NaH and LiAlH4.

6 0
3 years ago
When 52 grams of O2 react with excess C3H8, how many grams of CO2 would be produced?
denis23 [38]

Answer:35.1g of CO2

Explanation:

C3H8+5O2------=3CO2+4H2O

5 0
3 years ago
What is the number of solute particles dissolved in water
iVinArrow [24]
It’s a big amount of it
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Methane, CH4, burns in oxygen gas to form water and carbon dioxide. What is the correct balanced chemical equation for this reac
maks197457 [2]

The correct balanced chemical equation which occur when methane burn in oxygen gas is

CH4 + 2O2 --> 2H2O +CO2 (answer D)

when methane is burned in presence of oxygen gas it produces carbon(IV) oxide and water and energy,that is 1 mole of CH4 reacted with 2 moles of O2 to form 2 moles of water and 1 mole of CO2 and enegy. This energy make the methane to be used as fuel.

5 0
3 years ago
Read 2 more answers
A gaseous fuel mixture stored at 747 mmHg and 298 K contains only methane (CH4) and propane (C3H8). When 11.1 L of this fuel mix
Alisiya [41]

Answer:

M_f=38.8\%

Explanation:

From the question we are told that:

Pressure P=747mmHg

Temperature T=298K

Volume V=11.1

Heat Produced Q=780kJ

Generally the equation for ideal gas is mathematically given by

 PV=nRT

 n= (747/760) *11.1/ (0.0821*298)

 n=0.446mol

Therefore

 x+y=0.446

 x=0.446-y .....1

Since

Heat of combustion of Methane=889 kJ/mol

Heat of combustion of Propane=2220 kJ/mol

Therefore

 x(889) + y(2220) = 760 ...... 2

Comparing Equation 1 and 2 and solving simultaneously

 x=0.446-y .....1

 x(889) + y(2220) = 760 ...... 2

 x=0.173

 y=0.273

Therefore

Mole fraction 0f Methane is mathematically given as

 M_f=\frac{x}{n}*100\%

 M_f=\frac{1.173}{0.446}*100\%

 M_f=38.8\%

7 0
3 years ago
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