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4 years ago

Which is most affected by a tropical warm air mass?

2 answers:

7 0

Air mass is defined as the mass of the huge body of air which develops over a specific region over time. Tropical warm air mass forms over the tropical area which is near to equator.

Miami, Florida lie closest to the equator, thus, it is most affected by tropical warm air mass.

Since, other three i.e. Charlotte, North Carolina; New York City, New York; Denver, Colorado are not closest to the equator. Thus, they are not most affected by the tropical warm air mass.

emmainna [20.7K]4 years ago

3 0

The answer is B) Miami, Florida.

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Enter your answer in the provided box. To make use of an ionic hydrate for storing solar energy, you place 409.0 kg of sodium su

alex41 [277]

Answer:

409.0 kg of sodium sulfate decahydrate will produce 4.49×10⁵ kJ

of heat energy.

Explanation:

CHECK THE COMPLETE QUESTION BELOW

To make use of an ionic hydrate for storing solar energy, you place 409.0 kg of sodium sulfate decahydrate on your house roof. Assuming complete reaction and 100% efficiency of heat transfer, how much heat (in kJ) is released to your house at night? Note that sodium sulfate decahydrate will transfer 354 kJ/mol

EXPLANATION

Here we were asked to calculate the amount of heat will be generated by 409.0 kg of sodium sulfate decahydrate at night assuming there Isa complete reaction and 100% efficiency of heat transfer in the process

The molecular weight of sodium sulfate decahydrate (H₂₀Na₂O₁₄S) is needed here, so it must be firstly calculated.

The molecular weight of sodium sulfate decahydrate (H₂₀Na₂O₁₄S)

( 1*20) + (22.98*2) + (16*14)+ (32*14)= 322.186 g/mol.

Thus 409.0 kg of H₂₀Na₂O₁₄S will have a value which is equivalent to = (409000g)/(322.186 g/mol.)

=1269.453mol of H₂₀Na₂O₁₄S.

But it was stated in the the question that per mole of H₂₀Na₂O₁₄S will transfer 354 kJ heat.

Therefore, 1269.453mol will transfer 1269.453× 354 kJ = 4.49×10⁵ kJ of heat.

Hence, 409.0 kg of sodium sulfate decahydrate will produce

4.49×10⁵ kJ of heat energy.

6 0

4 years ago

5. What is the mole fraction of NaOH in an aqueous<br> solution that contains 31.0 % NaOH by mass?

Liono4ka [1.6K]

Answer:

16.8%

Explanation:

31% NaOH molar mass 40 gm

69% H2O molar mass 18 gm

1000 gm would be

310 gm NaOH or 310/40 = 7.75 moles

690 gm of H2O or 690/18 = 38.333 moles

7.75 / (7.75 + 38.333) = .168 mole fraction

6 0

2 years ago

For the n = 3 electron shell, which of the following quantum numbers are valid? Check all that apply.

stealth61 [152]

Answer:

The valid quantum numbers are l=0, l=-2 and l= 2.

Explanation:

Given that,

n = 3 electron shell

Suppose, the valid quantum numbers are

l = 3

m = 3

l = 0

m = –2

l = –1

m = 2

We know that,

The value of n = 3

Principle quantum number :

Then the principal quantum number is 3. Which is shows the M shell.

So, n = 3

Azimuthal quantum number :

The azimuthal quantum number is l.

$l=0,1,2$

Magnetic quantum number :

The magnetic quantum number is

$m=-2,-1,0,1,2$

Hence, The valid quantum numbers are l=0, l=-2 and l= 2.

7 0

3 years ago

Read 2 more answers

Looking at the different chemical structures, which one(s) might be able to hold

Romashka-Z-Leto [24]

Answer:

c) Fullerene and carbon nanotubes because they have empty spaces inside the molecules

Explanation:

Fullerene and carbon nanotubes would be the most desired in order to hold the cancer fighting drugs and to carry them through the body safely.

These molecules have empty spaces in them.
The cavities makes it possible for storage.
As they pass through the body, they can be held perfectly well to their target site of action.

3 0

3 years ago

6.285×10^3 mg = _____? _____ kg

TiliK225 [7]

One kilogram is equal to one thousand grams. Further, one gram is equal to 1000 mg. The conversion is as shown below,
(6.285 x 10³ mg) x (1 g / 1000 mg) x (1 kg / 1000 g)
The numerical value of the operation above is 0.006285 kg.

6 0

4 years ago

Read 2 more answers