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3 years ago

Which of the following compounds, when dissolved in water, will NOT result in

Chemistry

2 answers:

Paladinen [302]3 years ago

8 0

Answer:

The answer to your question is: letter B, table sugar.

Explanation:

Molecules that dissociate in water are called salts, they can dissociate partially or totally.

a. table salt, NaCl It's a salt, it dissociates

b. table sugar, C12H22011 It's not a salt

c. baking soda, NaHCO3 It's an acid salt, it dissociates

d. Epsom salts, MgSO4 It dissociates

Veseljchak [2.6K]3 years ago

4 0

B. Table sugar hope this helped

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What is the energy of an electromagnetic wave with a frequency of 8•10^12 Hz?

aniked [119]

Hello!

Find the Energy of the Photon by Planck's Equation, given:

E (photon energy) =? (in Joule)

h (Planck's constant) = $6.626*10^{-34}\:J * s$

f (radiation frequency) = $8*10^{12}\:Hz$

Therefore, we have:

$E = h*f$

$E = 6.626*10^{-34}*8*10^{12}$

$E = 53.008*10^{-34+12}$

$E = 53.008*10^{-22}$

$\boxed{\boxed{E = 5.3008*10^{-21}\:Joule}}\end{array}}\qquad\checkmark$

I Hope this helps, greetings ... DexteR! =)

8 0

3 years ago

In a certain industrial process involving a heterogeneous catalyst, the volume of the catalyst (in the shape of a sphere) is 10.

olga nikolaevna [1]

Answer:

a. The second run will be faster.

d. The second run has twice the surface area.

Explanation:

The rate of a reaction is proportional to the surface area of a catalyst. Given the volume (V) of a sphere, we can find its surface area (A) using the following expression.

$A=\pi ^{1/3} (6V)^{2/3}$

The area of the 10.0 cm³-sphere is:

$A=\pi ^{1/3} (6.10.0)^{2/3}=22.4cm^{2}$

The area of each 1.25 cm³-sphere is:

$A=\pi ^{1/3} (6. 1.25)^{2/3}=5.61cm^{2}$

The total area of the 8 1.25cm³-spheres is 8 × 5.61 cm² = 44.9 cm²

The ratio of 8 1.25cm³-sphere to 10.0 cm³-sphere is 44.9 cm²/22.4 cm² = 2.00

Since the surface area is doubled, the second run will be faster.

6 0

3 years ago

If my aunt means degree Celsius or degrees Fahrenheit

JulijaS [17]

If it is 60 Celsius that would conver to fare height by means of this equation; (1.8*60)+32°F
Which would come out to.... 140° Fahrenheit... Hardly seems like chilly conditions.

7 0

3 years ago

Quick question plz . .....Which one of the following is acidic oxide?

dedylja [7]

Answer:

Explanation:

its an acidic oxide, it disolves in water to form carbonic acid which is an acid

8 0

3 years ago

Why is it important for scientists to use the scientific method?

shtirl [24]

I believe the answer is A

3 0

2 years ago