1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Viktor [21]
3 years ago
10

I did not mean to publish this ;-;

Chemistry
2 answers:
san4es73 [151]3 years ago
6 0

Answer:

dang

Explanation:

Mashutka [201]3 years ago
4 0

Answer:

hi I guess I got free point s

You might be interested in
A cloud type that usually produces precipitation is a(n)
abruzzese [7]
The cloud that produces rain is the cumulonimbus cloud.
5 0
4 years ago
Moraines left by glaciers are different from deposits left by rivers because the rocks left behind are _____.
12345 [234]

Explanation:

unorganized and unsorted i think this is the answer

7 0
3 years ago
Limestone stalactites and stalagmites are formed in caves by the following reaction: Ca2 (aq) 2HCO−3(aq)→CaCO3(s) CO2(g) H2O(l)
Vesna [10]

Answer : The value of \Delta E for this reaction is 36.18 kJ

Explanation :

First law of thermodynamic : It states that the energy can not be created or destroyed, it can only change or transfer from one state to another state.

As per first law of thermodynamic,

\Delta E=q+w

where,

\Delta E = internal energy  of the system

q = heat added or rejected by the system

w = work done

As we are given that:

q = 38.65 kJ

w = -2.47 kJ (system work done on surrounding)

Now put all the given values in the above expression, we get:

\Delta E=38.65kJ+(-2.47kJ)

\Delta E=36.18kJ

Therefore, the value of \Delta E for this reaction is 36.18 kJ

6 0
3 years ago
Balance the following equations:
lesya [120]
<h2>Hey There!</h2><h2>_____________________________________</h2><h2>Answer:</h2><h2>_____________________________________</h2>

(I) N_{2} + 3H_{2} --> 2NH_{3}

(II) P_{4}  + 5O_{2}  --> 2P_{2} O_{5}

(III) 2NaF + Br_{2}  -->2NaBr + F_{2}

(IV) 2ZnS + 3O_{2} --> 2ZnO + 2SO_2

(V) Pb(NO_3)_2 + 2NaCl --> 2NaNO_3 + PbCl_2

<h2>_____________________________________</h2><h2>Best Regards,</h2><h2>'Borz'</h2>

7 0
3 years ago
What volume (in L) of oxygen will be required to produce 77.4 L of water vapor in the reaction below?
Inga [223]

Answer:

90.3 L

Explanation:

Given data:

Volume of water produced = 77.4 L

Volume of oxygen required = ?

Solution:

Chemical equation:

2C₂H₆ + 7O₂  →  4CO₂ + 6H₂O

It is known that,

1 mole = 22.414 L

There are 7 moles of oxygen = 7×22.414 = 156.9 L

There are 6 moles of water = 6×22.414 = 134.5 L

Now we will compare:

                               H₂O           :              O₂    

                               134.5         :              156.9

                                 77.4         :             156.9/134.5×77.4 =90.3 L

So for the production of 77.4 L water 90.3 L oxygen is required.

8 0
3 years ago
Other questions:
  • Calculate the mass-to-mass ratio of 25.0 g of salt in 105 g of water. Work must be shown in order to earn credit.
    5·1 answer
  • Scientist use instruments to record the strength of earthquakes
    9·1 answer
  • For an object that is speeding up at a constant rate, how would the acceleration vs. time graph look?
    14·2 answers
  • Oxygen's electronegativity value is between those of sulfur and fluorine. Which statement correctly describes the relationship b
    7·1 answer
  • Convert 1.76 um to inches
    5·1 answer
  • The functional group for an ester is: RCHO RCOOH RCOOR ROH
    7·1 answer
  • How many neutrons would be in an atom of Selenium if the mass number for this particular isotope is Se-80?
    14·1 answer
  • I need help with this one pls, ty! ASAP
    11·1 answer
  • Convert 26.02 x 1023 molecules of C2H8 to grams. Round your answer to the hundredths place.
    7·1 answer
  • Freezing a candy bar is an example of a physical change. <br> True or false
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!