What is one disadvantage of hydroelectric energy?

Answers

Answer 1

Impact on wild life,carbon and methane emissions,

Related Questions

What is the purpose of a buffer?

Answers

The main purpose of a buffer solution is just to resist the change in pH so that the pH of the solution won't be much affected when we add an acid or base into it. The added acid or base is neutralized.

Answer: A buffer solution is a solution made to prevent the pH level of something from changing when you add a base or an acid to it. For example, if you put a buffer solution in a pool, and then you put chlorine in it, the chlorine's effect on the PH level will be suppressed.

2 C2H6 + 7 O2 → 4 CO2 + 6 H2O How many moles of oxygen gas (O2) are needed to create EXACTLY 6 moles of Carbon dioxide(CO2)?.

Answers

صاحي يخي ب فاق . فخذ بريعهح زين

What is the molarity of a solution where one mole of NaOH is added to 2000mL of water

Answers

Answer:

Molarity of a solution where one mole of NaOH is added to 2000mL of water is 0.0005

Explanation:

Molarity is the equal to number of moles of solute divided by total volume of solvent

Given -

Number of moles of solute i.e NaOH = 1

Total volume of solvent i.e water = 2000 mL

Molarity [tex]\frac{1}{2000} = 0.0005[/tex]

which of the following is true about these diagrams

Answers

Answer:

N/A NO DIAGRAM

Explanation:

N/A NO DIAGRAM

N/A NO DIAGRAM N/A NO DIAGRAM

N/A NO DIAGRAM

N/A NO DIAGRAM N/A NO DIAGRAM

N/A NO DIAGRAM

in which of these compounds are there twice as many oxygen atoms as hydrogen atoms?

Answers

Answer:

G - H2SO4

Explanation:

two hydrogen atoms and 4 oxygen atoms

PLEASE HELP HELP ME. THIS IS DUE TODAY PLEASE

Answers

Answer:

B, C

Explanation:

Hope it helps i read it all

9.49.8 grams of Kl is dissolved in 1.00 kg of solvent. What is the molality?

Answers

Answer:

Molality = 9.498 mol k g − 1

Explanation:

A final way to express the concentration of a solution is by its molality. The molality ( m ) of a solution is the moles of solute divided by the kilograms of solvent. A solution that contains 1.0 mol of NaCl dissolved into 1.0 kg of water is a “one-molal” solution of sodium chloride.

molality = number of moles of solute/ mass of solvent in kg

number of moles of KI = mass of KI / molar mass of KI

number of moles of KI = 9.49.8 g / 1.00 g m o l − 1

number of moles of KI = 9.498 moles

molality = 9.498 moles / 1kg

molality = 9.498 mol k g − 1

Which term identifies a type of intermolecular force?
A.
covalent bonding
B.
hydrogen bonding
C.
ionic bonding
D.
metallic bonding

Answers

Answer: B. Hydrogen Bonding

Explanation: I got it right on castle learning lol

There are different kinds of forces. The term that identifies a type of intermolecular force is hydrogen bonding.

The three known to be types of intermolecular interactions. They are

Dipole–dipole interactions London dispersion forces hydrogen bonds.

Hydrogen bonding is known to be an intermolecular force that takes place between two molecules. That molecule is known to have a hydrogen atom be bonded to a nitrogen, oxygen, or fluorine atom.

Learn more about Bond from

https://brainly.com/question/1420470

. What is the molarity of 5.30 moles of NaCl dissolved in 0.400 L of solution?

Answers

Answer:

13.25 M

Explanation:

Molarity is moles over liters so simply plug your values in as such:

5.30 mol ÷ 0.400 L = 13.25 M

An aqueous solution has a hydroxide-ion concentration of 1.0x10^-3M. What is the pH of the solution?

a.11

b.3

c.-3

d.7

Answers

The answer is C -3 is the correct answer

Explain how the iron pipes change into rust?

Answers

Dissolved oxygen in water causes growth of such rust inside a ferrous pipe that accelerates scale deposition.

What did Rutherford contribute to the model of the atom?

the neutron

the proton

the nucleus

the electron

Answers

Answer:

the nucleus

Explanation:

He proposed that the mass of an atom is concentrated in the nucleus which occupies a small volume in the center .He added that the nucleus comprises the protons and neutrons.where the neutron had no charge while the protons had charge of +1

Answer:

the nucleus

Explanation:

how much heat is required to increase the temperature of 20 grams of water by 26 degrees celsius?

Answers

Answer: 2175.68 J heat is required to increase the temperature of 20 grams of water by 26 degrees celsius.

Explanation:

Given: Mass = 20 g

Change in temperature = [tex]26^{o}C[/tex]

The standard value of specific heat of water is [tex]4.184 J/ g^{o}C[/tex]

Formula used to calculate the heat energy is as follows.

[tex]q = m \times C \times \Delta T[/tex]

where,

q = heat energy

m = mass of substance

C = specific heat of substance

[tex]\Delta T[/tex] = change in temperature

Substitute the values into above formula as follows.

[tex]q = m \times C \times \Delta T\\= 20 g \times 4.184 J/g ^{o}C \times 26^{o}C\\= 2175.68 J[/tex]

Thus, we can conclude that 2175.68 J heat is required to increase the temperature of 20 grams of water by 26 degrees celsius.

so2+o2 = so3 método de tanteo

Answers

Answer:

I dont understand

Explanation:

818191919

how many torr is 2.7 atm?
2.7 atm = ? torr

Answers

Answer:

2.7 atm = 2052 torr

I hope this helps you.

Answer:

2052 torr

Explanation:

Multiply 2.7 atm by the conversion factor to torr which is 760 torr = 1 atm

How many calories of heat were added to 167.9 g of water to raise its temperature from 25oC to 55oC?

Answers

Answer:

Q = 5036.9 calories

Explanation:

Given that,

Mass, m = 167.9 g

The temperature raises from 25°C to 55°C.

The specific heat of water,c = 4.184 J/g °C

We need to find the heat added to water. We know that,

[tex]Q=mc\Delta T\\\\=167.9 \times 4.184\times (55-25)\\\\=21074.8\ J[/tex]

Q = 5036.9 calories

So, 5036.9 calories of heat is added.

A 1.0 liter flask contains 90.1 moles of water vapor at 27.0 oC. What is the pressure of the gas?

Answers

Answer:

The pressure of the gas is 224839.8 atm

Explanation:

As we know

PV = nRT

Substituting the given values, we get -

P * 1 L = 90.1 moles * 8.314 4621(75). J K−1 mol−1 * 300

P = 224839.8 atm

The pressure of the gas is 224839.8 atm

100 pointts pls answer quick and no link :In the reaction, Hydrogen + Iodine --> Hydrogen Iodide at equilibrium, some Iodine is is added. What happens to the equilibrium?

Answers

Answer:

the concentration of hydrogen iodide will be higher than it was in the original equilibrium conditions.

HELP!!! WILL MARK BRAINLIEST!!!
picture attached below

Answers

Answer:

0.2 cm

Explanation:

looking at the ruler, you can see that the diameter is 0.4 cm. to get the radius, just divide by two, which gets 0.2 cm as the radius

How many grams of oxygen are present in 10g of H2 SO4?

Answers

H2SO4 molecular weight is 98g/mol.

out of 98g 64g is due to oxygen

one mole of oxygen is 32g

Then 2moles of oxygen in H2SO4.

If you want to know the mass percent of a substance in a compound.

Simple formula:

Mass percent=Mass of the substance×100/Total mass of the compound

Ex:

Mass percent of oxygen in H2SO4=mass of the oxygen ×100/Total mass of the H2SO4

(i.e 16×4×100/98=65.3061%)

Here oxygen mass is multipled by 4 because there are 4 Oxygen atoms in H2SO4.

Which statement explains why carbon-14 dating cannot be used to date ancient rocks?
O Carbon-14 decays at a varying rate.
O Carbon-14 decays quickly leaving the amount too small to measure.
O Carbon-14 can be used only to date the remains of organisms.
O Carbon-14 has a half-life that is much longer than potassium.

Answers

Answer: Carbon-14 decays quickly leaving the amount too small to measure.

Explanation:

Answer:

Explanation:

i did it

State of matter

A gas made up of homonuclear diatomic molecules escapes through a pinhole 3.98 times as fast as oxygen gas. Write the Chemical formula of the gas.

Answers

Answer:

H₂

Explanation:

To solve this question we must find, as first, find the molar mass of the homonuclear diatomic gas using Graham's law. With the molar mass we can identify this gas

Graham's law:

[tex]\frac{V_a}{V_b} =\sqrt{\frac{m_B}{m_A} }[/tex]

Where V is the speed of the gases and m the molar mass of those:

As Va is 3.98 times Vb (And mB is molar mass of oxygen gas = 32g/mol)

[tex]3.98 =\sqrt{\frac{32g/mol}{m_A} }[/tex]

15.84 = 32g/mol / mA

mA = 2.02g/mol

As is a homonuclear diatomic gas, the molar mass of the atom is 1.01g/mol. Thus, the gas is:

H₂

If you put a link, you will be reported.

Answers

Answer:

5ppm

Explanation:

there are 1 million (1,000,000) µg (micrograms or mcg) per g (gram) ("micro" means millionth). So, 4. 1 part per million (ppm) for a 1g sample is 1 µg or .

I know you said no links, but this is a converter that explained it much better than I know how to

http://www.endmemo.com/sconvert/ppmug_g.php#:~:text=%C2%BB%20Microgram%2Fgram%20Conversions%3A&text=ug%2Fg%E2%86%94ppm%201%20ug%2Fg%20%3D%201%20ppm

heres a screenshot of the site (since i understand links are awful)

Graphene is made of pure _______________.

Answers

Answer:

Graphene is made of pure carbon.

Explanation:

It is a material in which the carbon atoms are arranged in a single layer, creating a honeycomb pattern. It should be stressed that this layer of carbon is only one atom thick, although some authors consider up to ten layers of carbon to be graphene.

please mark me brainliest

made of pure carbon

¿
Que es la materia y qué es el volumen que ocupa la materia?

Answers

Todo en un estado sólido de materia tiene una forma y una longitud distintas. El volumen de un objeto es la cantidad de espacio que ocupa. Un sólido es un bloque de madera que conserva su forma y volumen cuando se coloca sobre una mesa.

Hope that helps!!!

¡Espero que ayude!

answer truthfully:))

Answers

Answer:

Formula: [tex]Velocity \: V = f \lambda \\ Solution: = 5 \times 0.8 \\ = 4 \: {ms}^{ - 1} [/tex]

Answer:

The first guy is correct. That's what I got too

What is the wavelength of spectral line resulted from the electron transition from n=3 to n=2 in a hydrogen atom.

Answers

Answer:

[tex]\lambda=6.56x10^{-7}m[/tex]

Explanation:

Hello there!

In this case, it possible to use the Rydberg equation in order to calculate the wavelength for this transition from n=3 to n=2 as shown below:

[tex]\frac{1}{\lambda} =R_H(\frac{1}{n_f^2}-\frac{1}{n_i^2} )[/tex]

Thus, we plug in the corresponding energy levels and the Rydberg constant to obtain:

[tex]\frac{1}{\lambda} =10973731.6m^{-1}(\frac{1}{2^2}-\frac{1}{3^2} )\\\\\frac{1}{\lambda} =1524129.4m^{-1}\\\\\lambda=\frac{1}{1524129.4m^{-1}} \\\\\lambda=6.56x10^{-7}m[/tex]

Best regards!

A sample of gas is inside of a rigid container with fixed volume of 350mL. The initial pressure of the system is 366kPa, and the initial temperature is 88 degrees Celsius. How would the pressure of the system change if the temperature was increased to 110 degrees Celsius?

Answers

Answer:

457.5kPa

Explanation:

Given data

V1=V2=350mL (fixed volume )

P1=366kPa

T1= 88 degrees Celsius

P2=??

T2= 110 degrees Celsius

For the general gas equation

P1V1/T1= P2V2/T2

V1=V2

P1/T1= P2/T2

Substitute

366/88= P2/110

Cross multiply we have

P2*88=366*110

P2*88= 40260

P2= 40260/88

P2= 457.5 kPa

Hence the pressure will change to 457.5kPa

answer asap pls i give brainliest

Answers

Answer:

B. Revolution is a planet's movement around the sun causing four seasons the occur. Rotation is the spinning of the planet on its axis causing day and night.

Which contains more carbon 4.71 g of C6H12O6 or 5.85 g C2H6O?

Answers

Answer:

5.85 g C2H6O has more carbon

Explanation:

Weight of carbon in 4.71 g of C6H12O6

[tex]4.71 * 12.01\\56.5671\\[/tex] grams

Weight of carbon in 5.85 g of C2H6O

[tex]5.85 * 12.01\\70.259\\[/tex] grams

Hence, 5.85 g C2H6O has more carbon

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