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3 years ago

After raining when do rain drops dry away easily on a cloudy day or on a sunny day? explain

Chemistry

2 answers:

padilas [110]3 years ago

4 0

I would tend to think that the amount of sunlight reaching the water is irrelevant.

The color of the surface that the water lies on is more important. A black, matte

surface absorbs more infrared radiation than a light-colored, reflective surface.

Paladinen [302]3 years ago

3 0

On a sunny day the temperature might be above 40°C which will cause the water to vaporize quicker as if it were cloudy and colder

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How much heat is released when 6.00 g of methane is combusted using the reaction below? CH4 + 2O2 ? CO2 + 2H2O ?Hrxn = -890. KJ

goblinko [34]

Answer : The amount of heat released is, -121.04 KJ

Solution : Given,

Enthalpy of reaction, $\Delta H_{rxn}$ = -890 KJ

Mass of methane = 6 g

Molar mass of methane = 44 g/mole

First we have to calculate the moles of methane.

$\text{Moles of methane}=\frac{\text{Mass of methane}}{\text{Molar mass of methane}}=\frac{6g}{44g/mole}=0.136moles$

The given balanced reaction is,

$CH_4+2O_2\rightarrow CO_2+2H_2O$

From the balanced reaction we conclude that

1 mole of methane releases heat = -890 KJ

0.136 moles of methane releases heat = $\frac{0.136moles}{1mole}\times -890KJ=-121.04KJ$

Therefore, the amount of heat released is, -121.04 KJ

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3 years ago

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What do the rows of the periodic table periodic table indicate

Tatiana [17]

Answer:

The rows on the periodic table are called periods. All the elements in a period have valence electrons in the same shell. The number of valence electrons increases from left to right in the period. When the shell is full, a new row is started and the process repeats.

<h2>I hope it helps plz let me know if it is right or wrong.</h2>

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3 years ago

A student finds a rock on the way to school. In the laboratory he determines that the volume of the rock is 22.7 mL, and the mas

kari74 [83]

Answer:

The density will be 1.48 g/ mL.

Explanation:

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2 years ago

What do vaccines simulate the production of?

Aleksandr [31]

Answer:

Vaccines are diluted germs that are injected or otherwise introduced into the body. As a result of getting a vaccine, the person will be protected from developing the disease at a later date

Explanation:

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2 years ago

How many milliliters are in a 3.5 kL

Firdavs [7]

Answer: 3.5e+6 ; 0.0000035

Explanation: Weird question but this is the answer

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3 years ago

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