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3 years ago

Which one has more weight :air containing moisture or hot air

Chemistry

1 answer:

raketka [301]3 years ago

8 0

Answer:

In very hot, humid weather you might feel the air is heavier because moving around seems to take more energy than on dry days. Sticky days probably feel “heavier” because heat and high humidity slows the evaporation of perspiration, your body grows hotter and this saps your strength

Explanation:

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(a) Red light has a wavelength of roughly 700 nm. What is the wavelength in m? ball park 10.10' (b) What is the wavelength of re

joja [24]

Explanation:

a) Wavelength of red light = 700 nm

1 nanometer = $10^{-9} meter$

Wavelength of red light in meter will be:

$=700 nm=700\times 10^{-9} m=7.00\times 10^{-7} m$

b) Wavelength of red light = $7.00\times 10^{-7} m$

1 meter = 39.3701 inches

Wavelength of red light in inches will be:

$7.00\times 10^{-7} m=7.00\times 10^{-7}\times 39.3701 inches$

$=2.7559\times 10^{-5} inches$

Value of distance given = 90.123 km

1 km = 3280.84 feet

$90.123 km=90.123 \times 3280.84 feet=295,679.1433 feet$

1 foot = 0.1515152 chain

$295,679.1433 feet=295,679.1433\times 0.1515152 chain$

$=44,799.88453 feet\approx 4.48\times 10^4 chains$

Value of distance in chains:

$90.123 km=4.48\times 10^4 chains$

3 0

3 years ago

5. If 4 moles of nitrogen gas reacts with excess hydrogen gas, how many moles of NH3 will be produced?

Setler [38]

The answer is A, hope it helps!

8 0

3 years ago

Linolenic acid (C18H30O2 - M.W. = 278.42 g/mol) reacts with hydrogen gas according to the equation: C18H30O2 + 3H2 (g) → C18H36O

Ludmilka [50]

Answer:

2.53 L is the volume of H₂ needed

Explanation:

The reaction is: C₁₈H₃₀O₂ + 3H₂ → C₁₈H₃₆O₂

By the way we can say, that 1 mol of linolenic acid reacts with 3 moles of oxygen in order to produce, 1 mol of stearic acid.

By stoichiometry, ratio is 1:3

Let's convert the mass of the linolenic acid to moles:

10.5 g . 1 mol / 278.42 g = 0.0377 moles

We apply a rule of three:

1 mol of linolenic acid needs 3 moles of H₂ to react

Then, 0.0377 moles will react with (0.0377 . 3 )/1 = 0.113 moles of hydrogen

We apply the Ideal Gases Law to find out the volume (condition of measure are STP) → P . V = n . R . T → V = ( n . R .T ) / P

V = (0.113 mol . 0.082 L.atm/mol.K . 273.15K) 1 atm = 2.53 L

4 0

3 years ago

Help me with this question please like right now

denis23 [38]

Using the gas laws, the volume of nitrogen produced is 6.6 L.

<h3>What is the product of a reaction?</h3>

We know that the product of a reaction is obtained from the balanced reaction equation. The reactants combine together to yield the products hence we have; N2 + 3H2 ----> 2NH3

We know that 1 mole of hydrogen occupies 22.4 L

x moles of hydrogen occupies 25500 L

x = 1 mole * 25500 L/ 22.4 L

x = 1138.4 moles

If 3 mole of hydrogen reacts with 1 mole of nitrogen

1138.4 moles reacts with 1138.4 moles * 1 mole/ 3 moles = 379.5 moles

Mass of nitrogen = 379.5 moles * 28 g/mol = 10626 g

Now 3 moles of hydrogen produces 44.8 L of NH3

1138.4 moles produces 1138.4 moles * 44.8 L/ 3 moles = 17000 L

Now;

P1V1/T1 = P2V2/T2

P1V1T2 = P2V2T1

V2 = P1V1T2/P2T1

V2 = 1 * 17000 * 848/5.5 * 273

V2 =9601 L

2) 2NH4NNO3(s) ---> 4H2O(g) + 2N2(g) + O2(g)

Number of moles = 12g/ 80 g/mol = 0.15 moles

Now;

2 moles of NH4NNO3 produced 2 moles of nitrogen hence 0.15 moles of N2 was produced.

1 mole of N2 occupies 22.4 L

0.15 moles of N2 occupies 0.15 moles * 22.4 L/1 mole = 3.36 L

P1 = 760 torr

V1 = 3.36 L

T1 = 273 K

P2 = 745 torr

T2 = 527 degrees or 800 K

V2 = ?

V2 = P1V1T2/P2T1

V2 = 760 * 3.36 * 527/745 * 273

V2 = 6.6 L

Learn more about gas laws:brainly.com/question/12669509

#SPJ1

3 0

2 years ago

Pollution comes from<br> many small sources.

Digiron [165]

Answer: True

Hope this helps

5 0

4 years ago

Which one has more weight :air containing moisture or hot air​

Which one has more weight :air containing moisture or hot air