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densk [106]
3 years ago
13

Which of the following statements is true of the corona

Chemistry
2 answers:
frez [133]3 years ago
8 0

Answer:

C. It’s the outermost layer of the suns atmosphere

Katyanochek1 [597]3 years ago
6 0
The answer is C.

Hopefully this helped...
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In a generator, the current changes direction each time the ____ passes the _____ of a magnet.
lubasha [3.4K]

Answer:1.armature 2.pole

Explanation:

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2 years ago
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Calculate the pHpH of a 0.10 MM solution of barium hydroxide, Ba(OH)2Ba(OH)2. Express your answer numerically using two decimal
Maurinko [17]

Answer:

13.301

Explanation:

To calculate the pH of the solution, we must obtain the pOH of the solution as illustrated below:

The dissociation equation is given below

Ba(OH)2 <==> Ba^2+ + 2OH^-

Since Ba(OH)2 dissociate to produce 2moles of OH^-, the concentration of OH^- = 2x0.1 = 0.2M

pOH = - Log[OH^-]

pOH = - Log 0.2

pOH = 0.699

But

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pH = 14 — pOH

pH = 14 — 0.699

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6 0
3 years ago
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Based on the balanced equation 2C2H2 + 5O2 → 4CO2 + 2H2O calculate the number of excess reagent units remaining when 52 C2H2 mol
erica [24]

Answer:

20 molecules of oxygen gas remains after the reaction.

Explanation:

2C_2H_2 + 5O_2\rightarrow 4CO_2 + 2H_2O

Molecules of ethyne = 52

Molecules of oxygen gas = 150

According to reaction, 2 molecules of ethyne reacts with 5 molecules of oxygen gas.

Then 52 molecules of ethyne will react with:

\frac{5}{2}\times 52=130 molecules of oxygen gas.

As we can see that we have 150 molecules of oxygen gas, but 52 molecules of ethyne will react with 130 molecules of oxygen gas. So, this means that ethyne is a limiting reagent and oxygen gas is an excessive reagent.

Remaining molecules of recessive reagent = 150 - 130 = 20

20 molecules of oxygen gas remains after the reaction.

5 0
3 years ago
a sample of water with a mass of 648.00 kg at 298 K is heated with 87 kh of energy. the specific heat of water is 1 J-1 kg K-1.
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q = mCΔT

The correct specific heat capacity of water is <em>4.187 kJ/(kg.K)</em>.

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Tf = Ti + ΔT = 298 K + 0.032 K = 298.032 K


3 0
3 years ago
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Of the elements: b, c, f, li, and na. the element with the highest ionization energy is
padilas [110]
Carbon has the highest ionization energy as its energy 1086KJ\Mol and the rest are between 500 and 800. 
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