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2 years ago

Please help and answer questions 10

Chemistry

1 answer:

kirill115 [55]2 years ago

5 0

The Weight is 140 and the mass is 15 can you give me brainlylist pls
I hope this helps I mean it’s easy

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modern atomic theory is on_____including Dalton's atomic theory and quantum mechanics, Modern atomic theory is built on es -)) A

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D) Previous models

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3 years ago

A hurricane is MOST LIKELY to occur in an area

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Answer:

Western Pacific, such as the Philippines, Guam, southeast Asia (including China and Taiwan) and Japan.

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3 years ago

What is the electronic configuration of the atom x

Fofino [41]

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3 years ago

Saturated liquid water flows steadily into a well-insulated electrical water heater (see Anim. 4-1-1) with a mass flow rate (m⋅)

Otrada [13]

Answer:

a. 2257.7 kW b. 6.057kw/K

Explanation:

Steam existing at 100KPa with t = 20C, we can obtain values of enthalpy and entropy from table

h1 = hf = 417.4 kJ/kg

s1 = 1.302 KJ/kg.K

h2 = hg = 2675.1 kJ/kg

s2 = 7.359 kJ/K

a. Electrical Power consumption of system is given by Wel = mass x Change in Enthalpy

Wel = 1 x (h2 - h1) = 1 x (2675.1 - 417.4) = 2257.7 kw

b . Entropy Generation is given by Change in Entropy = Entropy generation - heat dissipated/temperature, since we have a well insulated system with no losses, q =0, hence

ΔS = Sgen + 0/T = Sgen

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3 0

3 years ago

Which drawing best accounts for the polarity of methanol, CH3OH, and the bond polarities that make a major contribution to the o

Viefleur [7K]

The question is incomplete, the question is;

Which drawing best accounts for the polarity of methanol, CH3OH, and the bond polarities that make a major contribution to the overall molecular polarity?

A) drawing (1) B) drawing (2)

D) drawing (4) C) drawing (3)

Answer:

B) drawing (2)

Explanation:

In Chemistry, the direction of dipole is shown from positive end to negative end.

The image that contains the options in the question asked has been attached.

We can see in image 2 that the oxygen atom was correctly designated as the negative end of the dipole while the carbon and hydrogen atoms were each designated as positive ends of the dipole in accordance with the magnitude of electronegativity difference between the two atoms. The net dipole moment is now taken in the direction shown in image 2. This is the correct answer.

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3 years ago