Answer: N2F4
Explanation:
Which of Earth's five spheres is involved when a volcano erupts?
Answer:
[;
Explanation:
Mudflows (geosphere) and flooding may occur downstream from volcanoes and may inundate streamside communities (biosphere).
A skateboarder coasts a distance of 20 meters in 4 seconds. What is the person's speed?
Answer:
5
Explanation:
20/4
calculate how many seconds are in the month of april
How many grams of KCl are produced if 90 g KCIO3 decomposes? *
54.75 g KCI
13.69 g KCI
27.37 g KCI
37 g KCI
What is the relationship between air pressure, density, and altitude?
Answer:
''The relationship between air pressure, air density, or altitude? As altitude increases, pressure increases. As altitude increases, air density increases. Air pressure and density are lowest at sea level.''
Explanation:
I need help with 4, 5, 8, 9, and 6. Quickly I need it before class starts. Worth points!!!!!! HelP
Answer:
4. 264.6J
5. 37.5J
6. 96J
7. 55Watts
8. 77.14m
9. 6s
10. 750Watts
Explanation:
4). Mechanical energy (potential energy) = mass (m) × acceleration due to gravity (g) × height (h)
m = 3kg, h = 9m, g = 9.8m/s²
P.E = 3 × 9 × 9.8
= 264.6J
5). Kinetic energy (K.E) = 1/2 × m × v²
Where;
m = mass (kg) = 3kg
v = velocity (m/s) = 5m/s
K.E = 1/2 × 3 × 5²
K.E = 1/2 × 3 × 25
K.E = 1/2 × 75
K.E = 37.5J
6). Work done (J) = Force (N) × distance (m)
Force = 12N, distance = 8m
Work done = 12 × 8
= 96J
7). Power = work done (J) ÷ time (s)
Work done = 550J, time = 10s
Power = 550/10
= 55Watts.
8). Work done = force (F) × distance (m)
Work done = 540J, force = 7N, distance = ?
540 = 7 × d
540 = 7d
d = 540/7
d = 77.14m
9). Power = work done (J) ÷ time (s)
Work done = 300J, time = ?, Power = 50Watts.
50 = 300/t
50t = 300
t = 300/50
t = 6seconds.
10). Power = work done (J) ÷ time (s)
This means that;
Power = force × distance / time
Force = 300N, distance = 5m, time = 2s
Power = 300 × 5 ÷ 2
Power = 1500 ÷ 2
Power = 750Watts
PLEASE HELP!! i have no idea what this is
Answer:
0.1389mol
Explanation:
no of mol of Al in 7.5g=7.5g/27gmol^-1
=75/270mol
according to tge chemical equation
2mol of Al:1 mol of Al2S3
1mol of Al:0.5mol of Al2S3
therefore 75/270 mol of Al : 0.5*75/270 mol of Al2S3
=0.1389mol
Which of the following are behavioral adaptations? Select all that apply.
A. playing dead
B. migration
C. type of teeth
D. hibernation
E. body coverings
Answer:
The 2 types of behavioral adaptation are migration, and hibernation. Explanation: Adaptation of animal is the fitness towards its environment.
Explanation:
How many grams of hydrogen gas are produced if 3.0 moles of magnesium are reacted with excess hydrochloric acid?
Answer k
Explanation: better luck
Science pls help me having trouble on the third one
Answer:
ijcQwertyjkllmnnbbvcxzssssdttyyjnnnvvcxyj
Type the correct answer in the box. Spell all words correctly. In which system are both energy and matter exchanged with the surroundings? In a(n) system both energy and matter are exchanged with the surroundings.
Answer:
open system
Explanation:
An open system is a system in which both energy and matter are exchanged with the surroundings.
Select the correct answer.
How many electrons does a covalent bond consist of?
A.
one
B.
two
C.
four
D.
eight
Explanation:
A covalent bond can be thought of as a 'shared pair' of electrons, so there are 2 electrons in each bond. That means that a double bond will have 4 electrons in the space between the bonded nuclei, and a triple bond will have 6.
MARK ME AS BRAINLISTI really need help I'm not good with science
Answer:
A!!!!!!!!
Explanation:
what type of lens is shown -covex lens
-this isnt a lens
concave lens
[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]
Actually Welcome to the Concept of the Lens and Ray Optics.
We must understand the Concept that,
1.) When a beam of parallel light pass through a Convex lens, all the rays get deviated and converges to a special point at the axis that is a Focus.
2.) When a beam of light passes through the Concave lens,the light beams diverge from one another forming a virtual focus in the primary side of lens,
Hence the above given diagram beam rays are diverging, it is a CONCAVE LENS
answer is C.) Concave lens
A student is doing an investigation on the movement of objects.
Why is it important for her to repeat the investigation several times?
well i just had a major PTSD attack how is everyone i need to think about something else
Answer:
Oh so so sorry about that. and thanks for caring for us. anyway we are good wbu
Explanation:
im good. i just ate applesauce lol :)
In which or areas on the image dose salinity of the ocean increases
A.1
B.2
C.3
D.1,2,3
E.none of these
Answer and Explanation:
D I believe..
Answer: The saltiest locations in the ocean are the regions where evaporation is highest or in large bodies of water where there is no outlet into the ocean. The saltiest ocean water is in the Red Sea and in the Persian Gulf region (around 40‰) due to very high evaporation and little fresh water inflow.
Explanation: Sea water salinity is expressed as a ratio of salt (in grams) to liter of water. In sea water there is typically close to 35 grams of dissolved salts in each liter. It is written as 35‰ The normal range of ocean salinity ranges between 33-37 grams per liter (33‰ - 37‰).But as in weather, where there are areas of high and low pressure, there are areas of high and low salinity. Of the five ocean basins, the Atlantic Ocean is the saltiest. On average, there is a distinct decrease of salinity near the equator and at both poles, although for different reasons.Near the equator, the tropics receive the most rain on a consistent basis. As a result, the fresh water falling into the ocean helps decrease the salinity of the surface water in that region. As one move toward the poles, the region of rain decreases and with less rain and more sunshine, evaporation increases.Fresh water, in the form of water vapor, moves from the ocean to the atmosphere through evaporation causing the higher salinity. Toward the poles, fresh water from melting ice decreases the surface salinity once again. Water has a unique property. As the temperature decreases to 40°F (4°C) the molecules slow, water contracts and the density increases. Below 40°F (4°C) the molecules begin to bond to each other and as they do, the water begins to expand again, decreasing the density. At 32°F (0°C) all molecules are locked into a crystalline structure with a resulting nine percent expansion in size. This expansion, and corresponding decrease in density, is the reason ice floats. The amount of salt in sea water also determines the temperature at which sea water freezes. Adding salt to water lowers the freezing temperature. Water with a salinity of 17‰ freezes at about 30°F (-1°C) and 35‰ water freezes at about 28.5°F (-2°C). Yet, despite the saltiness of the ocean, sea ice contains very little salt, about a tenth of the amount of salt that sea water has. This is because ice will not incorporate sea salt into its crystal structure. Therefore, sea ice is actually drinkable. The temperature and salinity of the sea water also help determine its density. As the temperature of sea water decreases the density also increases. Also, as the salt content of sea water increases, so does its density. This makes the density of sea water, unlike fresh water, below the freezing point. So, in situations of sea ice formation, the salinity, and therefore the density of the underlying water continues to increase well after an area is iced over.
In the "Average Salinity" map (below), it shows the lowest salinity in the polar regions. Bear in mind, this image depicts surface salinity only. The surface salinity is lower in the polar regions than in the tropical regions due to melting each summer. However, each winter below the ocean surface, the increased salinity in the water due to ice formation, causes the water below the ice to sink and that sinking motion governs the motion of the ocean's deep-water currents.
How does real-world military CIS compare to its portrayal on television? You can either refer to the agent speaking about it in the video or draw your own conclusions from the video against things you’ve seen on television.
Answer: The video compared to things i've seen on TV seems much more stressful. On TV, they always seem pretty confident in what they are doing, but it never shows the training and how much work you have to go through to get to the end result. They always just take their time walking around and do lots of talking in TV shows when that's not the case at all in this video. It's get in and get out with as much evidence as possible. The TV show always has a successful ending when the hour ends, which is not the case in real life.
In what situation does water undergo a physical change?
Answer:
There are actually two.
Explanation:
When water freezes it turns to ice however it still has the molecular properties of water. Same thing when it evaporates.
Which chemical reaction below demonstrates the combustion of a hydrocarbon?
PLEASE ANSWER IF ITS CORRECT I WILL MARK IT AS BRAINLIEST PLZ??
What do you think would happen if the temperature of a gas is higher than the other when applying Graham's Law? *
A) There will be no effect on the gas
B) The kinetic energy of the gas particles would increase
C) The volume of the gas particles would increase
Answer:
There will not be effect on the gas
Explanation:
I'm sure that it's correct answer
which of the following elements has the largest first ionization energy? PLEASE HELP
Answer:
Boron
Explanation:
Hope it helps you......
Answer:
B. Nitrogen
&
D . Boron
Explanation:
both are the element has the largest first ionization energy
need done ASAP HELP MEEE
Answer:
1. Heat
2. Temperature
3. convection
4. Conduction
5. Radiation
what is the molarity of 5.63 moles of lithium in 3.25 liters of solution
Answer:
1.73 Molar
Explanation:
The formula is Molarity=moles of solute/liters of solution, which can be written in whatever way you prefer, and examples include: M=N/V or M=mol/L.
M=N/V
M= [tex]\frac{5.63}{3.25}[/tex]
Divide 5.63 by 3.25. When you calculate this, you get 1.73, therefore your answer is 1.73 molar.
Select the correct answer.
Beryllium (Be) and fluorine (F) combine to make the compound BeF2. What is the chemical name for this compound?
A.
beryllium fluoride
B.
beryllium fluorine
C.
beryllide fluoride
D.
beryllide fluorine
Answer:
A number is right I think
Answer:
A.
beryllium fluoride
I hope it is helpful...
If I have 3.45 x 1024 molecules of sucrose, how many moles of sucrose do I have?
Answer:
3532.8
Explanation:
Drag each tile to the correct location.
Classify the elements as diatomic or monatomic. If necessary, refer to the periodic table to help you identify the diatomic elements.
Answer:
Carbon, helium, and sodium are monoatomic elements.
Hydrogen, iodine, and oxygen are diatomic elements.
Explanation:
b. If the initial pressure of gas inside the balloon was 1.65 atm, what is the new pressure?
A sample of gas kept at a constant pressure, is heated from 273 K to 373 K. If the initial volume
is 3.00 L, what is the new volume?
A container of gas is heated from 250 K to 303 K. What is the new pressure if the initial pressure
is 880 kPa?
A sample of gas at 62.0°C occupies a volume of 4.80 L at a pressure of 2.90 atm. How many moles of gas are contained in the sample?
A 0.100 mole sample of gas is at a temperature of 85.0°C and a volume of 3.47 L. What is the pressure of the gas (in mm Hg)?
Question 1 :
V1/T1 = V2/T2
3.0L/273K = V2/373K
To get the value of Z, cross multiply
3.0L x 373K = 273K x V2
1119 = 273V2
Divide both sides by 273
1119/273 = 273V2/273
4.10L = V2
The new volume is 4.10 liters
Question 2 :
P1/T1 = P2 /T2
P1 = 880 kPA= 880 *10^3 Pa
T1 = 250 K
T2 = 303 K
P2 =?
Substituting for P2
P2 = P1 T2/ T1
P2 = 880 kPa * 303 / 250
P2 = 266,640 kPa/ 250
P2 = 1066.56 kPa.
The new pressure of the gas is 1066.56 kPa
Question 3 :
Given that:
Volume of gas V = 4.80L
(since 1 liter = 1dm3
4.80L = 4.80dm3)
Temperature T = 62°C
Convert Celsius to Kelvin
(62°C + 273 = 335K)
Pressure P = 2.9 atm
Number of moles of gas N = ?
Apply ideal gas equation
pV = nRT
2.9atm x 4.8dm3 = n x (0.0082 atm dm3 K-1 mol-1 x 335K)
13.92 atm dm3 = nx 2.747 atm dm3 mol-1
n = 13.92/2.747
n = 5.08 moles
There are 5.08 moles of gas contained in the sample
Question 4 :
Volume of gas V = 3.47L
(since 1 liter = 1dm3
3.47L = 3.47dm3)
Temperature T = 85.0°C
Convert Celsius to Kelvin
(85.0°C + 273 = 358K)
Pressure P = ?
Number of moles of gas N = 0.100 mole
Apply ideal gas equation
pV = nRT
p x 3.47dm3 = 0.10 x (0.0082 atm dm3 K-1 mol-1 x 358K)
p x 3.47dm3 = 0.29 atm dm3
p = (0.29 atm dm3 / 3.47 dm3)
p = 0.085 atm
If 1 atm = 760 mm Hg
0.085atm = 0.085 x 760
= 64.6 mm Hg
The pressure of the gas is 64.6 mm hg
write difference between metallic and non metallic minerals
Metallic Minerals will be minerals in which metal components are available in their crude structure. Non-metallic minerals don't contain any metal substances in them. At the point when metallic minerals are dissolved another item is shaped. Non-metallic minerals are frequently discovered installed in youthful overlay mountains and sedimentary rocks.
Learning Task 4: Read the instructions found on the next page. Answer the
questions. Write your answers in your answer sheet..
Answer:
1. yes because it wants to go back to its original spot.
2. the poetical energy turns into kenotic energy and then moves back to the original position
3. it will go back to the original position just different angle
4. same thing as last time goes back to the original position but different angle because of how you are holding the ruler.
Explanation:
