Most of earths fresh water is in glaciers

True or false

PEASE HELPP

Answers

Answer 1

Answer:

True

Explanation:

Answer 2
answer is TRUE!!!

Explanation:
Most of oceans are salt water.
BUT lakes, ponds, springs, glaciers, etc are fresh water

Related Questions

What type of Star is this?

1. Main Sequence

2. Super Giant

3. Giant

4. White Dwarf

Answers

Answer:

#3

Explanation:

not sure but it's close to 5,100

2. The following are representative particles of matter: which among them
represents a covalent compound?
A. atom
B. ion
C. molecule
D. particle unit​

Answers

Huyahehdhdhhdyyrhhr. Hey how did I miss the day how are ya mungu is that app that you have a gd

1. Calculate the energy of interaction between a lithium ion and a magnesium ion at a distance of 4,55/10^-10m

Answers

18837373737738383838384848848484

why do reactions go faster at a higher temperature?

Answers

Answer:

1. Increasing the temperature increases the average speed of the reactant molecules

2. faster moving molecules in the warm reactants hit each other with more energy

Explanation:

Answer:

Explanation: At higher temperatures the particles can collide more often and with more energy. It makes the reaction take place more quickly.

Liquid Mercury has a density of 13.55 g/cm3 at room temperature (20.0 ° C).
You are trying to design a container to hold a 3.40 X 104 mg sample of mercury.
This mercury expands at 1.11 μl (microliter) per degree it is heated.
What is the minimum volume ( in liters) of the container if you want the sample to be able to be heated to 200.0 ° C? (Assume that the sample starts at room temperature.)
If this was in a sealed tube with a diameter of 0.550 cm, how tall(in cm) would the tube need to be to hold the mercury through these temperature changes? [ V= π r2h (cylinder) ] Please show your work!

Answers

Answer:

A long glass tube with one end open and the other end sealed was completely filled with mercury, then it was stood on end with the open end in a container filled with mercury.

 

If the tube is relatively short, it will still be filled with mercury all the way to the top.  If it's long enough, the column of mercury will not reach the top.  The air pressure on the surface of the mercury pool that the tube sits in is what supports the mercury. When the weight of a 1 cm^2 column of mercury is greater than the air pressure per cm^2, it can't be supported by that pressure.  The top of the tube will have an almost perfect vacuum, with only a tiny amount of mercury vapor in it.

 The height of a column of water or mercury that can be supported by air pressure depends on, and is proportional to, the density of the water or mercury.

 

How you're supposed to get the answers depends on what units are used to define 1 bar of pressure. Your textbook or lecture notes should give you the value and units of a bar. If you're supposed to look it up, you'll find a variety of different combinations, including 750.06 mm of Hg or 1019.72cm of H 2 O. That would actually give you the answers directly.    

750.06 m m ≈ 0.75 m of H g

1019.72 c m ≈ 10.20 m of water

 

If you're supposed to calculate everything, you'll need to use 1 bar = 1 x 105 N / m 2. Then you'll have to look up the g r a v i t a t i o n constant and calculate the weight of a column of mercury or water. Note that g rams and k i l o g r a m s are units of mass, not weight, which is a force.  The unit of force in the m e t r i c system is the N e w t o n. This is confusing because we measure weight in pounds, which is a force. Most of the rest of the world measures "weight" in k i l o g r a m s, which is really mass.

 

How is 1 bar defined for you?

If it's m m H g, just multiply that by 13.6 to get the height for a column of water.

If it's a force per unit area:

We can calculate the force (weight) of H. g using the g r a v i t a t i o n constant and the given density, then go from there."

Explanation:

I do not own this information

1. Calculate the resistivity of the given material whose resistance is 2Ω, length and area of cross section are 15 cm and 25cm² respectedly

Answers

Answer:

0.033 Ω . m

Explanation:

This is a typical problem that can be solved with the resistivity formula.

ρ = R . A / l

where R is the resistance, A is the area and l, length of the object.

We have all the data in the statement but firstly, we need to convert the area and length in m² and m, respectively because units of ρ are Ω . m

15 cm . 1 m/100 cm = 0.15 m

25 cm² .  1m² / 10000 cm² = 0.0025 m²

We replace → R = 2Ω . (0.0025 m² / 0.15) ⇒ 0.033 Ω . m

A conductive object will be more or less resistant according to the resistivity, which increases with length and decreases with area. Furthermore, resistivity is also conditioned to temperature, where as T ° increases, resistivity increases too.

what is the molecular formula if the emperical formula C2H5 and the molcuar molar mass is 58.14 g/mol0​

Answers

Answer:

C4H10

Explanation:

Remark

Every periodic table is different. I'm going to use approximate numbers.

Emperical Formula Mass

2C   =   2 * 12 =  24

H5   =   5     1       5

Emperical Formula Mass = 29

Solution

To get the molecular Molar Mass, you use

Molecular Molar Mass = number of mol of each constituent * empirical molar mass

Molecular mass = 58.14 rounded to 58

empirical mass =  29

moles = constitutent = ?

58 = 29 * mols constituent     Divide by 29

2 = moles constituent

Answer

(C2H5)_2

C4H10

A 0.25 mol sample of neon gas at 18 °C and 0.799
atm is heated to 49 °C. The new gas pressure is 1.11
atm. What is the change in volume of the neon gas?

Answers

Answer: The change in volume is 1.52 L

Explanation:

According to ideal gas equation:

[tex]PV=nRT[/tex]

P = pressure of gas = 0.96 atm

V = Volume of gas = ?

n = number of moles

R = gas constant =[tex]0.0821Latm/Kmol[/tex]

T =temperature =[tex]18^0C=(18+273)K=291K[/tex]

[tex]V=\frac{nRT}{P}[/tex]

[tex]V=\frac{0.25mol\times 0.0820 L atm/K mol\times 291K}{0.799atm}=7.47L[/tex]

The combined gas equation is,

[tex]\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}[/tex]

where,

[tex]P_1[/tex] = initial pressure of gas = 0.799 atm

[tex]P_2[/tex] = final pressure of gas = 1.11 atm

[tex]V_1[/tex] = initial volume of gas = 7.47 L

[tex]V_2[/tex] = final volume of gas = ?  

[tex]T_1[/tex] = initial temperature of gas = [tex]18^0C=(18+273)K=291K[/tex]

[tex]T_2[/tex] = final temperature of gas = [tex]49^0C=(49+273)K=322K[/tex]

Now put all the given values in the above equation, we get:

[tex]\frac{0.799\times 7.47}{291}=\frac{1.11\times V_2}{322}[/tex]

[tex]V_2=5.95L[/tex]

The change in volume = (7.47 - 5.95)L=1.52 L

The space occupied by the substance, solution or particle in a system is called volume. The change in volume of the neon gas is 1.52 L.

What is the ideal gas equation?

The ideal gas equation is the equation that states the relation between the pressure, volume, temperature, moles and gas constant of the hypothetical gas.

The ideal gas equation of a hypothetical ideal gas can be given as,

[tex]\rm PV = nRT[/tex]

Where,

Pressure (P) of the gas = 0.96 atmThe volume of the gas = VNumber of moles (n) = 0.25 molGas constant (R) = 0.0821 Latm/ KmolTemperature (T) = 291 K

From the above equation volume can be calculated as,

[tex]\begin{aligned} \rm V &= \rm \dfrac{nRT}{P}\\\\&= \dfrac{0.25 \times 0.0820 \times 291}{0.799}\\\\&= 7.47 \;\rm L\end{aligned}[/tex]

The combined gas equation can be shown as,

[tex]\rm \dfrac{P_{1}V_{1}}{T_{1}} = \dfrac{P_{2}V_{2}}{T_{2}}[/tex]

Where,

The initial pressure of the gas [tex]\rm (P_{1})[/tex] = 0.799 atmThe final pressure of the gas [tex]\rm (P_{2})[/tex] = 1.11 atmThe initial volume of gas [tex]\rm (V_{1})[/tex] = 7.47 LThe final volume of gas [tex]\rm (V_{2})[/tex] = ?The initial temperature of the gas [tex]\rm (T_{1})[/tex] = 291 KThe final temperature of the gas [tex]\rm (T_{2})[/tex] = 322 K

Substituting values in the above equation:

[tex]\begin{aligned}\dfrac{0.799 \times 7.47}{291} &= \rm \dfrac{1.11 \times V_{2}}{322}\\\\&= 5.95 \;\rm L\end{aligned}[/tex]

Volume change of the gas is, [tex](7.47 - 5.95)\;\rm L = 1.52\;\rm L[/tex]

Therefore the change in the volume of the neon gas is 1.52 L.

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10. Which of these elements is the most electronetative?
(10 Points)
Nitrogen
Calcium
Bromine
O Aluminum

Answers

it would be nitrogen
Out of the four Nitrogen is the most electronegative. Electronegative is basically determined by whichever atom is closest to F (the most electronegative)

Nitrogen is only a few electrons difference than Fluorine. Bromine is still quite electronegative but it has whole extra valence shells making it not as electronegative as nitrogen

Using the amount of each element you calculated in part A, calculate the ratios of the elements to each other to determine the empirical formula.

Select the correct answer from each drop-down menu to complete the empirical formula.

Answers

Answer:

C2H6O1

Explanation:

Divide the number of moles of each element by the smallest number of moles, which is 9.69 moles.

Divide the number of moles of carbon by 9.69:

19.3 mol/ 9.69 mol ≈ 2.

Divide the number of moles of hydrogen by 9.69:

57.5 mol/ 9.60 mol ≈ 6.

Divide the number of moles of oxygen by 9.69:

9.69 mol/ 9.69 mol = 1.

So, the empirical formula of the unknown compound is C2H6O.

please answer fast! Which of the following statements are false?
A: In a chemical change, atoms are rearranged to make new compounds.
B: The same element is present before and after a chemical change.
C: A physical change does not produce an entirely new substance.
D: A chemical property can be observed without changing the identity of the substance.



Answers

I believe it is C.

Hope this helps!

Describe what happens inside a CD
player when you listen to an audio CD.

Answers

Inside your CD player, there is a miniature laser beam (called a semiconductor diode laser) and a small photoelectric cell (an electronic light detector). When you press play, an electric motor (not shown in this diagram) makes the disc rotate at high speed (up to 500rpm). The laser beam switches on and scans along a track, with the photocell, from the center of the CD to the outside (in the opposite way to an LP record). The motor slows the disc down gradually as the laser/photocell scans from the center to the outside of the disc (as the track number increases, in other words). Otherwise, as the distance from the center increased, the actual surface of the disk would be moving faster and faster past the laser and photocell, so there would be more and more information to be read in the same amount of time.

The thing that happens inside a CD player when you listen to an audio CD is that laser beam turns on and scans along a track with the photocell from the CD's center.

What are semiconductors?

The electrical conductivity of a semiconductor material is between that of a conductor, such as metallic copper, and that of an insulator, such as glass.

A small photoelectric cell and a smaller laser beam (called a semiconductor diode laser) are found inside your CD player (an electronic light detector). When you hit play, the disc is rotated at a high speed by an electric motor (not visible in this figure) (up to 500rpm).

The laser beam turns on and scans along a track with the photocell from the CD's center to its edge (in the opposite way to an LP record). As the laser/photocell scans from the center to the periphery of the disc, the motor gradually slows it down (as the track number increases, in other words).

Hence laser beam turns on and scans along a track with the photocell from the CD's center.

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I need filling the blank spots ​

Answers

Answer:

have you tried c

Explanation:

the chicken and I don't know if you can make it

PHET Simulator

2. Add a slice of cheese, How many products are made? What are the leftovers?​

Answers

Answer:

there is 1 leftover because your adding to 1... I think

Explanation:

What gas is taken in by animals in the oxygen cycle?

Answers

Answer:

oxygen-carbon dioxide cycle

Animals and plants are connected to each other by the oxygen-carbon dioxide cycle. Plants need the carbon dioxide from animals to live and animals must have the oxygen from plants to survive.

Explanation:

hope this helped !

someone help please????

Answers

Answer:

A

Explanation:

Your answer is A

Answer:

A is the answer

Explanation:

What is the balanced equation of Na2S+CuSO4=CuS+Na2SO4?​

Answers

what you were given is the balanced chemical equation

which scientist made the most important discovery concerning indemnifying the sun as a star

Answers

Isaac Newton was the one who made that important discovery

Answer: Isaac Newton

Isaac Newton, an English scientist, lived from 1642 to 1727. In 1665 he realized that it was gravity that held the solar system together.

Explanation:

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Directions: Fill in the blanks with the correct term to complete the statements.

1. Seismic waves are also known as__________

2. When the seismic waves travel deeper into the crust, the quake will__________

3. The waves that travel the fastest are_____________

4. The type of wave that travels only in solid medium is known as______________

5.______________waves, also known as L waves are the slowest waves.
6.____________releases energy that travels through and around the earth
seismic waves.

7._____________are of lower frequency than body waves.

8. One of the types of surface waves is___________which creates more shaking.

9. Primary waves can travel a velocity of
10.___________is the velocity of secondary waves.

who can answer this question correct answer please...get chance point.. and brainlest..​

Answers

Answer:

1) secondary waves

2)

3) P waves

4)surace waves

If A is the symbol for an element, which of the following is an isotope of 15
7 A?

Is A correct ??

Answers

Answer: No It's B

Explanation:

13 = 7 so 15 = ? b because 7 + 8 = 15

Using the average atomic masses given inside the front cover of this book, calculate the number of atoms present in each of the following sample. a. 1.50 g of silver, Ag
b. 0.0015 mole of copper, Cu
C. 0.0015 g of copper, Cu
d. 2.00 kg of magnesium, Mg
e. 2.34 oz of calcium, Ca
f. 2.34 g of calcium, Ca
g. 2.34 moles of calcium, Ca

Answers

Answer:

c. 0.0015 g of coopet, cu

Explanation:

Tori completed an experiment to see what happens to differently charged objects when they come close to each other. Based on the observations that she collected, her teacher told her there is an error in her table. How can Tori correct her table?

A table with two columns. The first row is the headings of the table. The first column is labeled electrically charged objects and the second column is labeled attract or repel. In the first column, second row, there is an image of a beach ball with a negative charge on it and a dress with a positive charge on it. In the second column, second row, is attract. In the first column, third row, there is an image of a t shirt with a negative charge on it and a beach ball with a negative charge on it. In the second column, third row, is attract. In the first column, fourth row, there is an image of a t shirt with a negative charge on it and a glove with a negative charge on it. In the second column, fourth row, there is repel. In the first column, fifth row, is an image of a chair with a positive charge on it and a dress with a positive charge on it. In the second column, the fifth row is attract.

Answers

Answer:

A negatively charged T-shirt and a negatively charged beach ball will repel each other, so Tori should change "attract" to "repel" for these objects.

Explanation:

What is the name for the layer of electrically charged particles that allows radio waves to travel across the country and which atmosphere layer is it found in?

Answers

Answer:

Electrons are the electrically charged particles u r looking for

Think of the different types of reactions you have learned about. How can you tell if they absorb energy or release energy, and at the molecular level, how are they different?​

Answers

Answer:

Absorbed will be harder to spot than releasing because take this as it's like a tire. A tire will go smaller when it has no air compared to when it has air. But absorbed it the opposite. It gets bigger with more air and etc.

Explanation:

My answer don't copy and paste change it a little.

Helpppppppppppppppppppppppppppppppppppppp

Answers

Answer:

Time and Distance

Explanation:

The equation needed to calculate speed is distance ÷ time.

It’s time and distance

The list shows five processes that occur during digestion.
1. Tearing
II. Grinding
III. Mixing
IV. Churning
V. Rolling
Where do these processes most likely occur?
A
in the mouth
B
in the esophagus
С
in the stomach
D
in the colon

Answers

I think the answer is B.

BCL PART
<
10 of 25
Fill in the coefficients with the correct numbers to create a balanced equation,
Al + _ Brg _M1Brz
0 1,21
2,3,2
4,6,4
34,3

Answers

Answer:

im not sure sorry

Explanation:

According to the Bohr model, what period and group would the element be in on the Periodic Table?

Answers

Answer:

Group: 16 Period: 2

Explanation:

There are 8 protons, which determine that the element is Oxygen. Oxygen is in group 16 and Period 2.

A reversible reaction is a reaction that takes place in the ___________________
. If the reaction were to _________________, the rate of the forward reaction would equal that of the reverse reaction.

Answers

Answer:

A reversible Reaction is a reaction that takes place in the (Reactants)

If the reaction Were to (Equal), the rate of the forward reaction would equal that of the reverse reaction

Explanation:

A reversible reaction is a reaction that takes place in the both direction.

If the reaction were to equilibrium, the rate of the forward reaction would equal that of the reverse reaction.

What is reversible reaction?

A reversible reaction can be identified as one in which the reactants, , as well as products, react together to return the reactants to their previous form.

What is equilibrium?

The phase of chemical equilibrium occurs if both reactants, as well as products, products, are occupied in concentrations that do not alter with time.

Therefore, A reversible reaction is a reaction that takes place in the both direction. If the reaction were to equilibrium, the rate of the forward reaction would equal that of the reverse reaction.

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How many oxygen atoms are in diiodine heptoxide?​

Answers

Answer:

there are seven oxygen atoms

Explanation:

look look at the prefix hept- to help you answer this question

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