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slavikrds [6]
3 years ago
10

PLEASEEEE HELP WILL MARK BRAINLIEST!!!

Chemistry
2 answers:
nevsk [136]3 years ago
7 0

Answer:

C. One mole of water was produced from this reaction.

Explanation:

  • From the balanced equation:

<em>2H₂ + O₂ → 2H₂O,</em>

It is clear that 2 mol of H₂ react with 1 mol of O₂ to produce 2 mol of H₂O.

  • So, if one mole of hydrogen was used in this reaction:

1/2 mol of O₂ was used in the reaction, and

1 mol of water was produced from this reaction.

  • So, the correct statement is:

<em>C. One mole of water was produced from this reaction. </em>

Simora [160]3 years ago
4 0

Answer:

The correct answer is option C.

Explanation:

2H_2+O_2\rightarrow 2H_2O

If 1 mole of hydrogen is used. For that divide the whole equation with '2'.

\frac{2}{2}H_2+\frac{1}{2}O_2\rightarrow \frac{2}{2}H_2O

H_2+\frac{1}{2}O_2\rightarrow H_2O

When 1 mole of hydrogen reacts with half mole of oxygen it gives 1 mol of water.

So, from the given options the correct answer is option C.

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WILL GIVE BRAINLIEST ANSWER ASAP!!
Margarita [4]

Morphology

Explanation:

The shape and pigment of the hairs are the morphological elements of the two hair strands.

Morphology deals with the study of the form and structure of organisms, plants and their components.

  • The shape, size, color, textures, orientation are all morphological elements that can be used to draw biological comparison between things.
  • It also entails the relationship between the structures with each other.
  • Morphology is an expression of the genotypic make up of an organism.

Learn more:

Traits     brainly.com/question/2908634

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4 0
2 years ago
A piece of wood has a mass of 36g and measures 3cm X 6cm X 4cm. What is the density of the wood? Would the piece of wood float o
Fudgin [204]

Answer:

Explanation:

The density is  

1.1 g c m 3 .

4 0
3 years ago
Please show all of your work! :)
Paladinen [302]

Answer:

A

Explanation:

To answer this, we need to use Gay-Lussac's law, which states that:

\frac{P_1}{T_1}= \frac{P_2}{T_2} , where P is pressure and T is temperature

The initial pressure we're given is 4.5 atm (so P1 = 4.5) and the temperature is 45.0°C; however, we need to change Celsius to Kelvins, so add 273 to 45.0: 45.0 + 273 = 318 K (so T1 = 318).

The final pressure is what we want to find, but we do know the final temperature is 3.1°C. Converting this to Kelvins, we get: 3.1 + 273 = 276.1 K, which means T2 = 276.1.

Plug these values in:

\frac{P_1}{T_1}= \frac{P_2}{T_2}

\frac{4.5}{318}= \frac{P_2}{276.1}

Multiply both sides by 276.1:

P_2 ≈ 3.9 atm

The answer is thus A.

3 0
2 years ago
For a gaseous reaction, standard conditions are 298 K and a partial pressure of 1 atm for all species. For the reaction 2 NO ( g
enyata [817]

Answer:

ΔG = -61.5 kJ/mol (<u>Spontaneous process</u>)

Explanation:

2 NO (g)  +  O₂  (g)   ⇄  2NO₂ (g)

Let's apply the thermodynamic formula to calculate the ΔG

ΔG = ΔG° + R .T . lnQ

We don't know if the gases are at equilibrium, that's why we apply Q (reaction quotient)

ΔG = - 69 kJ/mol + 8.31x10⁻³ kJ/K.mol . 298K . ln Q

How can we know Q? By the partial pressures (Qp)

P NO = 0.450atm

PO₂ = 0.1 atm

PNO₂ = 0.650 atm

Qp = [NO₂]² / [NO]² . [O₂]

Qp = 0.650² / 0.450² . 0.1 = 20.86

ΔG = - 69 kJ/mol + 8.31x10⁻³ kJ/K.mol . 298K . ln 20.86

ΔG = -61.5 kJ/mol (<u>Spontaneous process</u>)

5 0
3 years ago
Explain how a bond forms between sodium and chlorine in sodium chloride (NaCl).
alexandr1967 [171]
Sodium has 1 valence electron and chlorine has 7 valence electrons and the goal is to get t 8 valence electrons then they attract together, forming table salt.
6 0
3 years ago
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