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Zina [86]
3 years ago
10

(02.03 LC)

Chemistry
2 answers:
Margaret [11]3 years ago
7 0

Answer:

I was just doing this quiz and got a 100% The answer is age of the earth!!!

Explanation:

OLga [1]3 years ago
3 0
The age of earth I think
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A_________is the distance from one compression to the next compression in a longitudinal wave. (Page 2 Vocabulary)
Marina86 [1]

Answer:

wavelength

Explanation:

4 0
4 years ago
Study the reaction. NO(g) ⇌ 12N2(g) + 12O2(g) ΔH = −90.3 kJ Which statement about the reaction is correct? A) The reverse reacti
lozanna [386]

Answer:

The forward reaction is an exothermic reaction.

Explanation:

An exothermic reaction is one in which energy is released, usually in the form of heat hence the enthalpy of the reaction is negative. When a reaction exothermic, the energy of the reactants is greater than the energy of the products hence the excess energy is given out as heat. The reactants lie at a higher energy level in the reaction profile compared to the products.

When we look at the reaction given in the question, NO(g) ⇌ 12N2(g) + 12O2(g) ΔH = −90.3 kJ , we can easily see from the thermochemical reaction that the forward reaction is exothermic, energy is released by the reaction system as evidenced by the negative enthalpy of reaction.

4 0
3 years ago
How many moles of water are produced from 19.2 g of B2H6
lbvjy [14]
The Balanced chemical equation of reaction of Borane with oxygen is as follow,
                                  B₂H₆ + 3O₂ -----> 2HBO₂ + 2H₂O
According to this equation 27.66 g (1 mole) of B₂H₆ reacts with oxygen to produce 36 g (2 moles) of water.
The amount of water produced when 19.2 g of B₂H₆ reacted is calculated as follow,
\frac{27.66 g B2H6 produced}{19.2 g of B2H6 will produce} = \frac{36 g of H2O}{x g of water}
Solving for x,                       
              x = (36 g of H₂O ₓ 19.2 g of H₂B₆) / 27.66 g of B₂H₆

              x = 24.98 g of H₂O

Result:
           24.98 g 
of water is produced when 19.2 g of B₂H₆ is reacted with excess of oxygen.
5 0
3 years ago
Describe the three possible decisions you can receive from an
NemiM [27]

Answer 2. Accept with minor revisions: Also known as conditional acceptance, this decision means that the paper requires minor changes for it to be ...

wer:

Explanation:

5 0
2 years ago
The overall reaction in a chemical cell is shown below as the reaction takes place (look in image)
Doss [256]
According to provided equation it is clear that Zn metal is oxidized from Zn⁰ into Zn²⁺ which means that Zn metal dissolves and forming Zn²⁺ solution so the correct answer is:

mass of the Zn(s) electrode decreases
7 0
3 years ago
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