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nexus9112 [7]
3 years ago
9

write an apology letter to your principal telling him why you were not in the mathematics competition.in 4000 words​

Chemistry
1 answer:
tensa zangetsu [6.8K]3 years ago
3 0
OK now that’s a lot to ask for but if you want someone to actually do that you’re gonna need a lot more points
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Can someone please help me?
andrew11 [14]

Answer:the mass of the gases and ash should be equal the mass of the initial stack of newspapers, there are equal number of atoms on both sides

Explanation:no matter what form the newspaper would take the mass stays the same because all you did is burn it, conserve means that each atom's mass will stay the same no matter what.

6 0
3 years ago
What is the free energy change if the ratio of the concentrations of the products to the concentrations of the reactants is 22.3
snow_lady [41]

The free energy change(Gibbs free energy-ΔG)=-8.698 kJ/mol

<h3>Further explanation</h3>

Given

Ratio of the concentrations of the products to the concentrations of the reactants is 22.3

Temperature = 37 C = 310 K

ΔG°=-16.7 kJ/mol

Required

the free energy change

Solution

Ratio of the concentration : equilbrium constant = K = 22.3

We can use Gibbs free energy :

ΔG = ΔG°+ RT ln K

R=8.314 .10⁻³ kJ/mol K

\tt \Delta G=-16.7~kJ/mol+8.314.10^{-3}\times 310\times ln~22.3\\\\\Delta G=-8.698~kJ/mol

8 0
3 years ago
Please help....... what should I do in order to study effectively?​
Maurinko [17]
1) Find a good studying spot.
2) Stay Away From Your Phone or any other things that distract you.
3) Take a break after about 1-1 hour 30 minutes- break should be about 10 minutes.
4) make sure notes are complete for what you are revising for.
5) watch videos/ use class notes/ your own notes/ revision guides.
6) test yourself by answering exam style questions or by flash cards.
7 0
3 years ago
When combined, two gases have a pressure of 75.54 atm. If one has has a pressure of 2.90 atm, what is the pressure of the second
nataly862011 [7]

Answer:

The pressureof the secondone is 2.5 atm

Explanation:

hope this helps

4 0
3 years ago
The brown solid that formed is zinc copper oxygen iron
horsena [70]

Answer: Copper

Explanation:

Just took it on Edgen

4 0
4 years ago
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