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Nookie1986 [14]
3 years ago
8

Write the complete electron configurations for (i) copper (ii) xenon

Chemistry
1 answer:
balandron [24]3 years ago
8 0

Answer:

hello to get it from you and your favouri love your pic

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What is the specific heat of ethanol if 4650 j are required to raise the temperature of 250.0g of ethanol from 22.0oc to 29.6 de
Alchen [17]

Answer:

C=2.45\frac{J}{g\°C}

Explanation:

Hello there!

In this case, since the thermodynamic definition of heat in terms of mass, specific heat and temperatures is given by:

Q=mC(T_2-T_1)

We are to calculate the specific heat of the ethanol as shown below:

C=\frac{Q}{m(T_2-T_1)}

Thus, by plugging it the given data we can obtain:

C=\frac{4650J}{250.0g(29.6-22.00\°C)} \\\\C=2.45\frac{J}{g\°C}

Regards!

5 0
3 years ago
A blank is scientific knowledge established through direct observation and remains constant. Scientific knowledge can change whe
KIM [24]

The words that complete the blanks are hypothesis and experimentation.

<h3>What is scientific knowledge?</h3>

The process by which scientists obtain information and establish knowledge is;

Observation ---> hypothesis ------> experiments ------> Theory -------> Law.

Thus after the process of observation what we have is merely a scientific hypothesis that needs to pass through the process of rigorous experimentation before it is proven to be true.

Thus the words that complete the blanks are hypothesis and experimentation.

Learn more about scientific knowledge:brainly.com/question/10601194

#SPJ1

4 0
2 years ago
N 2 ( g ) + 3 H 2 ( g ) ⟶ 2 N H 3 ( g ) How many moles of ammonia are produced when 5 moles of hydrogen reacts with excess nitro
Dima020 [189]
The reaction ratio of hydrogen to the ammonia produced is 3:2 hence if 3 moles of hydrogen produce 2 moles of ammonia thus mathematically,
3moleH2=2mole NH3
5moleH2=?
Thus cross-multiplying
(5*2)/3= 3⅓ moles.
4 0
4 years ago
Plz help me asap even faster then asap
iren2701 [21]

Answer:

The answer is D.8 sulfer atoms and 16 oxygen atoms

Explanation:

3 0
3 years ago
Ammonia (NH3) is widely used as a fertilizer
ratelena [41]

Answer:

82.28g

Explanation:

Given parameters:

Number of moles of hydrogen gas = 7.26 moles

Unknown:

Amount of ammonia produced = ?

Solution:

We have to write the balanced equation first.

              N₂    +   3H₂    →    2NH₃

Now, we work from the known to the unknown;

   

                  3 moles of H₂ will produce 2 moles of NH₃

                7.26 mole of H₂ will produce \frac{7.26 x 2}{3}  = 4.84 moles of NH₃

Molar mass of NH₃ = 14 + 3(1) = 17g/mol

Mass of NH₃  = number of moles  x molar mass = 4.84 x 17 = 82.28g

3 0
3 years ago
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