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
IRINA_888 [86]
4 years ago
9

Find the square of (a+b) please answer with method​

Chemistry
2 answers:
nataly862011 [7]4 years ago
5 0
(A^2+b^2)


Hope this helps
olga2289 [7]4 years ago
3 0

Answer:

{a}^{2}  + 2ab \:  +  {b}^{2}

Explanation:

{(a + b)}^{2}

(a + b)(a + b)

{a}^{2}  + ab  \:  +  \: ab \:  +  {b}^{2}

{a}^{2}  + 2ab \:  +  {b}^{2}

You might be interested in
Write the half reactions for 2Li + H2 -> 2LiH.
Ksivusya [100]
<span>Li ----> Li+ + e-(oxidation)
now comes </span>
<span>Reduction: </span>

<span>H2 + 2e- ------> 2H
 now by
</span>Multiplying (1) by 2 and adding in (2)  will give you the required equation..
.. 

<span>2Li + H2 ---------> 2LiH
</span>half reaction are either oxidation or reduction
7 0
3 years ago
Hydrogen is manufactured on an industrial scale by this sequence of reactions:
hichkok12 [17]

Answer:

K=K_1*K_2\\\\K=\frac{[H_2]^3[CO_2][H_2]}{[CH_4][H_2O][H_2O]}

Explanation:

Hello there!

In this case, for the given chemical reaction, it turns out firstly necessary to write the equilibrium expression for both reactions 1 and 2:

K_1=\frac{[CO][H_2]^3}{[CH_4][H_2O]} \\\\K_2=\frac{[CO_2][H_2]}{[CO][H_2O]}

Now, when we combine them to get the overall expression, we infer these two are multiplied to get:

K=K_1*K_2\\\\K=\frac{[CO][H_2]^3}{[CH_4][H_2O]} *\frac{[CO_2][H_2]}{[CO][H_2O]}\\\\K=\frac{[H_2]^3[CO_2][H_2]}{[CH_4][H_2O][H_2O]}

Regards!

6 0
3 years ago
PLEASE HELP
WITCHER [35]
The right answer is high number of offspring produced. asexual reproduction only requires on orgainism and creates an identical copy leaving no room for an increase of intelligence. plus it creates much more offspring and more often than sexual reproduction.
4 0
3 years ago
The molar volume of a certain solid is 142.0 cm3 mol−1 at 1.00 atm and 427.15 k, its melting temperature. the molar volume of th
kotykmax [81]

Answer:

\Delta _{fus}H=3255.3J/mol

\Delta _{fus}S=7.62\frac{J}{mol*K}

Explanation:

Hello,

Clausius Clapeyron equation is suitable in this case, since it allows us to relate the P,T,V behavior along the described melting process and the associated energy change. Such equation is:

\frac{dp}{dT}=\frac{\Delta _{fus}H}{T\Delta _{fus}V}

As both the enthalpy and volume do not change with neither the temperature nor the pressure for melting processes, its integration turns out:

p_2-p_1=\frac{\Delta _{fus}H}{\Delta _{fus}V}ln(\frac{T_2}{T_1} )

Solving for the enthalpy of fusion we obtain:

\Delta _{fus}H=\frac{(p_2-p_1)(V_2-V1)}{ln(\frac{T_2}{T_1})} =\frac{(11.84atm-1.00 atm)(156.6cm^3/mol-142.0cm^3/mol)}{ln(\frac{429.26K}{427.15K} )} \\\\\Delta _{fus}H=32127.3atm*cm^3/mol*\frac{101325Pa}{1atm}*(\frac{1m}{100cm} )^3\\\Delta _{fus}H=3255.3J/mol

Finally the entropy of fusion is given by:

\Delta _{fus}S=\frac{\Delta _{fus}H}{T_1} =\frac{3255.3J/mol}{427.15K}\\ \\\Delta _{fus}S=7.62\frac{J}{mol*K}

Best regards.

5 0
3 years ago
Which of the following describes green design?
mamaluj [8]

Answer: materials and design Techniques that reduce the negative environmental impact of a structure

Explanation:

7 0
4 years ago
Other questions:
  • Please help me I will name brainliest!
    9·2 answers
  • Write a sentence that descrices how to determine the number of moles of a compound in known mass of a
    14·1 answer
  • What is the concentration of hydronium ions after a 100ml solution of 0.02m magnesium hydroxide and 100ml of 0.05m nitric acid?
    6·1 answer
  • Properties of water what makes water so special
    7·1 answer
  • What 2 elements that share the same properties and reactivity as the silicon?
    12·1 answer
  • 2
    8·1 answer
  • I need help with part a and b please
    14·1 answer
  • Where two continental plates collide,
    13·2 answers
  • How many moles are in 64.8 l of f2 gas
    11·1 answer
  • Give the hybridization for the O in H3O+
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!