CHEMISTRY HIGH SCHOOL

Select all of the answers that apply. The Doppler radar can tell you many things about the weather, like _____.
a) wind direction
b) wind speed
c) humidity
d) temperature
e) intensity of precipitation
f) location of precipitation
g) air pressure

Answers

Answer 1
Answer:

Answer:

The correct answers are options a, b, e and f

Explanation:

Hello!

let's solve this!

Doppler radar is a radar that uses the Doppler effect. Use speed radiation, the speed return echoes.

Doppler radar can say things about the weather like precipitation intensity

and precipitation location

The correct answers are options a,b, e and f
Answer 2
Answer:

Windspeed,locationofprecipitation,intensityofprecipitation,winddirection.

Isyouranswers

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Considering the law of conservation of mass, if 56 g samples of solid iron (Fe) reacts with 24 g of oxygen (O2), how many grams of Iron Oxide (FeO) are obtained?

Answers

Answer:

62_grams of FeO

Explanation:

Molar mass of Fe = 55.845_g/mol

Molar mass of O2 = 15.999_g/mol

From law of conservation of mass

2 moles of Fe combines with one mole of O2 to form 2 moles of FeO

Number of moles of Fe and O2 present = mass/(molar mass) = 56/55.845~1

and 24/16 = 1.1.5

Therefore

1 part of Fe will react with 0.5 part of one mole of O2

which is 54_g of Fe reacts with 8_g to form 54+8 = 62_grams of FeO

How do molecules in a solid differ from those in a liquid or gas

Answers

Molecules in solids are packed a lot closer together than molecules in liquids and gases, so there is far less space between solid particles. Because of this, solid particles cannot move around quickly and freely like liquids and gases, instead they only vibrate so are fairly 'locked' into the same place, so solids have fixed volume and space.

You take an ice cube (mass = 18g) from the freezer (T=-10°C) and place it on the table. Later that day, you notice a puddle of water on the table that has reached ambient room temperature (20°C). How much heat must have been absorbed to make this happen? A) 1867.0 J B) 2260.4 J C) 7897.0 J D) 42657.0 J

Answers

The amount of heat absorbed or released by the system can be determined by the equation:

U = mCpΔT
where:
m = mass of material
Cp = specific heat capacity of material; in this case, Cpwater = 4.186 J/(g-°C)
ΔT = change in temperature of material

U = 18(4.186)(20-(-10)) = 2260.44 Joules or B.
A positive term means energy was absorbed.

the correct answer is 7897.0 Joules

Which element would release the most energy while adding an electron to a neutral atom in the gas phase? The choices are the following: Na. . Al. . Br. . S

Answers

Br would release the most energy while adding anelectron to a neutral atom in the gas phase.

 

Bromine is a chemicalelement with symbol Br and atomic number 35. It is a halogen. The element wasisolated independently by two chemists, Carl Jacob Löwig and Antoine JérômeBalard.

 

The correct answer between allthe choices given is the third choice. I am hoping that this answer hassatisfied your query and it will be able to help you in your endeavor, and ifyou would like, feel free to ask another question.

Answer: Br

Explanation:

Br:35:[Ar]3d^(10)4s^24p^5

Br^-:36:[Ar]3d^(10)4s^24p^6:[Kr]

Na:11:[Ne]3s^1

Na^-:12:[Ne]3s^2

Al:13:[Ne]3s^23p^1

Al^-:14:[Ne]3s^23p^2

S:16:[Ne]3s^23p^4

S^-:17:[Ne]3s^23p^5

As Bromine is short of only 1 electron to attain noble gas configuration, it will release energy as more stable species have less energy. Thus bromine would release most energy while adding an an electron to a neutral atom in the gas phase.

All other species Na, Al and S would not attain stable configuration on addition of electron and hence no energy would be released.

Your sense of touch is based in your _____.
bones
muscles
skin
tissues

Answers

umm tissues , because it is caused by receptors .

Answer:

Skin

Explanation:

Hope this helps   :)

In the doorbell configuration, describe what is initiated when someone presses the button outside your home.

Answers

Answer:

When the bell is rung the switch closes allowing electricity to flow making the hammer hit the bell, making the sound to alert people in the house.

Explanation:
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