3 years ago

One of the most difficult solar energy design problems to solve is:

Chemistry

2 answers:

Sonja [21]3 years ago

6 0

I'm not sure but i would say C.storing the heat energy.

Zina [86]3 years ago

6 0

Yes the answer is c. Storing heat energy

You might be interested in

What caused light to appear bent when it refracts ?

xz_007 [3.2K]

Answer:

Light refracts whenever it travels at an angle into a substance with a different refractive index (optical density). This change of direction is caused by a change in speed. ... When light enters a more dense substance (higher refractive index), it 'bends' more towards the normal line.

5 0

3 years ago

Read 2 more answers

In a titration of nitrous acid with NaOH, the pH of the solution is 3.14 when the moles of HNO2 and the moles of NO2-- are equal

jonny [76]

Answer:

$Ka=3.98x10^{-4}$

Explanation:

Hello there!

In this case, since the modelling of titration problems can be approached via the Henderson-Hasselbach equation to set up a relationship between pH, pKa and the concentration of the acid and its conjugate base, we can write:

$pH=pKa+log(\frac{[NO_2^-]}{[HNO_2]} )$

Whereas the pH is given as 3.14 and the concentrations are the same, that is why the pH would be equal to the pKa as the logarithm gets 0 (log(1)=0); thus, we can calculate the Ka via:

$Ka=10^{-pKa}=10^{-3.14}\\\\Ka=3.98x10^{-4}$

Best regards!

4 0

3 years ago

Create your own Model of an Atom. You may choose any element you would like to be represented by your model of an atom. Then pho

mart [117]

Here this might help you added the website link:

https://phet.colorado.edu/sims/html/build-an-atom/latest/build-an-atom_en.html

3 0

3 years ago

12) A 17.92 g sample of copper was submerged in water, and the volume reading rose by 2.00 mL. What is the density of the copper

emmasim [6.3K]

Hey there!:

Mass = 17.92 g

Volume = 2.00 mL

Density = ??

Therefore:

D = m / V

D = 17.92 / 2.00

D = 8.96 g/mL

Hope this helps!

3 0

3 years ago

Which type of bonding involves the sharing of electrons, in which the electrons are confined close to the more electronegative e

avanturin [10]

Answer:

metallic bonding

because it ids good conductor of electricity

7 0

3 years ago

Read 2 more answers