Justify the
the importance of solar enengy as on
alternative source of energy in Nepal​

Answers

Answer 1

Answer:

Nepal aims to achieve universal access to clean, reliable and affordable renewable energy solutions by 2030. It is expected to reduce dependence on traditional and imported energy by increasing access to renewable energy. The use of solar energy is more reliable than traditional electricity in Nepal.

Answer 2

According to law of conservation of energy,solar energy is a renewable source of energy as it's heat can be converted to other forms of energy  and can be conserved and is being looked as an alternative in Nepal.

What is law of conservation of energy?

According to law of conservation of energy, it is evident that energy is neither created nor destroyed rather it is restored at the end of a chemical reaction .

Law of conservation of mass and energy are related as mass and energy are directly proportional which is indicated by the equation E=mc².Concept of conservation of mass is widely used in field of chemistry, fluid dynamics.

Law needs to be modified in accordance with laws of quantum mechanics under the principle of mass and energy equivalence.This law was proposed by Julius Robert Mayer in the year 1842.

Learn more about law of conservation of energy,here:

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Related Questions

5. The number of atoms in 9.2 g of Na will be: A. 6.2 x 1023 atoms B. 2.408 x 1023 atoms C. 9.2 x1023 atoms D. 23 atoms E. 9.2 atoms

Answers

Answer:

The answer is "Option B"

Explanation:

Formula:

Na atoms= Na atoms moles \times  NA

               [tex]= \frac{mass}{Na \ Molar\ mass} \times 6.022 \times 10^{23}\\\\= \frac{9.2}{23} \times 6.022 \times 10^{23}\\\\=0.2875 \times 6.022 \times 10^{23}\\\\=2.4 \times 10^{23}\ atoms \\\\[/tex]

                                     

i hate chemistry but someone help please, no links or you’ll be reported

Answers

Answer:

A, D, E

Explanation:

When solid water changes directly to water vapor without first becoming a liquid, the process is called?

Answers

Sublimation. Sublimation is the change of a solid direct to gas or vapour without becoming liquid

Question 1 of 10
Which of these is an advantage of wind energy?
A. It increases greenhouse gas emissions,
B. It generates noise pollution,
c. It generates electricity
0
D. It reduces bird and bat populations.

Answers

I believe the answer is C.

Anyone do this worksheet? Answers?

Answers

Answer:

1. Moles of oxygen required to react with 5 moles of C₈H₁₈ = = 62.5 moles of oxygen

2. Mass of oxygen required = 2000 g of oxygen

3. Moles of CO₂ that will be produced = 40 moles of CO₂

4. Mass of CO₂ that will be produced = 1760 g of CO₂

5. Moles of H₂O that will be produced = 45 moles of H₂O

Explanation:

Balanced equation of the reaction : 2 C₈H₁₈ + 25 O₂ ---> 16 CO₂ + 18 H₂O

1. Mole ratio of Oxygen and C₈H₁₈ = 25 : 2

Moles of oxygen required to react with 5 moles of C₈H₁₈ = 5 × 25/2 moles

Moles of oxygen required to react with 5 moles of C₈H₁₈ = = 62.5 moles of oxygen

2. Mass of oxygen required = number of moles of oxygen × molar mass of oxygen

Molar mass of oxygen = 32.0 g/mol

Mass of oxygen required = 62.5 moles × 32.0 g/mol

Mass of oxygen required = 2000 g of oxygen

3. Mole ratio of CO₂ and C₈H₁₈ = 16 : 2

Moles of CO₂ that will be produced = 5 × 16/2 moles

Moles of CO₂ that will be produced = 40 moles of CO₂

4. Mass of CO₂ that will be produced = number of moles of CO₂ × molar mass of CO₂

Molar mass of CO₂ = 44.0 g/mol

Mass of CO₂ that will be produced = 40 moles × 44 g/mol

Mass of CO₂ that will be produced = 1760 g of CO₂

5. Mole ratio of H₂O and C₈H₁₈ = 18 : 2

Moles of H₂O that will be produced = 5 × 18/2 moles of H₂O

Moles of H₂O that will be produced = 45 moles of H₂O

How many joules are required to melt 80 grams of ice to water at 0 C?

Answers

Explanation:

Its value is 6.02 kj/mol. This means for every mole of ice we melt we must apply 6.02 kj of heat. We can calculate the heat needed with the following equation:

q

=

n

×

Δ

H

where:

q

= heat

n

= moles

Δ

H

= enthalpy

In this problem we would like to calculate the heat needed to melt 35 grams of ice at 0 °C. This problem can be broken into three steps:

1. Calculate moles of water

2. multiply by the enthalpy of fusion

3. Convert kJ to J

Step 1: Calculating moles of water

35

g

×

(

1

m

o

l

18.02

g

)

=

1.94

m

o

l

s

Step 2: Multiply by enthalpy of fusion

q

=

n

×

Δ

H

=

1.94

×

6.02

=

11.678

k

J

Step 3: Convert kJ to J

11.678

k

J

×

(

1000

J

1

k

J

)

=

11

,

678

J

Finally rounding to 2 sig figs (since 34°C has two sig figs) we get

q

=

12

,

000

J

One last note, if the temperature were not 0 °C then the ice would have to be heated in addition to melted. This would be a phase change problem combined with a heat capacity problem.

In which period is an element that has the electron configuration 152 252
2p6 352 3p6 3d10 452 4p1 ? *

Period 4
Period 1
Period 2
Period 3​

Answers

Answer:

Period 4

Explanation:

Given the electronic configuration of the element;

= Is²  2s²  2p⁶  3s²  3p⁶  3d¹⁰   4s²    4p¹

The period of the element is determined by the highest coefficient in the electronic configuration.

For this given configuration (Is²  2s²  2p⁶  3s²  3p⁶  3d¹⁰   4s²    4p¹), "4" is the highest coefficient and the element will certainly belong to period 4 in the periodic table.

To test if the prediction is correct:

Total number of electrons in the given element = 2+2+6+2+6+10+2+1 = 31

The element with atomic number of 31 = Gallium (Ga). (This element belong to period 4).

Calculate the pH at the equivalence point for titrating 0.200 M solution of benzoic acid with 0.060 M NaOH. Ka for benzoic acid is 6.3 x10^-5

Answers

Answer:

[tex]pH=8.43[/tex]

Explanation:

Hello there!

In this case, since the reaction between benzoic acid and sodium hydroxide is carried out in a 1:1 mole ratio, it is possible to calculate the moles of sodium benzoate salt that are produced due to the neutralization as show below:

[tex]n_{salt}=0.2mol/L*1L=0.2mol[/tex]

We can assume that the volume of benzoic acid is 1 L and therefore the used volume of NaOH is:

[tex]V_{NaOH}=\frac{0.200M*1L}{0.060M}=3.33L[/tex]

Which means that the total final volume is 4.33 L and the concentration of the resulting basic salt is:

[tex][salt]=\frac{0.2mol}{4.33L}=0.046M[/tex]

Next, since the salt is C6H5COONa, we can see it is ionized in Na+ cations and C6H5COO- anions, but just the latter is able to react with the water in the solution in order to undergo the following reaction:

[tex]C_6H_5COO^-+H_2O\rightleftharpoons C_6H_5COOH+OH^-[/tex]

Whose equilibrium expression, it terms of Kb, due to the release of OH- ions, is:

[tex]Kb=\frac{[C6H5COOH][OH^-]}{[C6H5COO^-]}[/tex]

And can be written in terms of x, Kw and Ka:

[tex]\frac{Kw}{Ka} =\frac{x*x}{0.046M-x} \\\\\frac{1x10^{-14}}{6.3x10^{-5}}=1.59x10^{-10}= \frac{x^2}{0.046M-x}[/tex]

And because Kb<<<<<1 we can neglect the x on the bottom to get:

[tex]1.59x10^{-10}= \frac{x^2}{0.046M}[/tex]

Whereas x is computed as follows:

[tex]x=\sqrt{1.59x10^{-10}*{0.046M} =2.7x10^{-6}M[/tex]

Which is actually equal to the concentration of OH- ions so that we can calculate the pOH prior to the pH:

[tex]pOH=-log(2.7x10^{-6})=5.57[/tex]

And therefore the pH as shown below:

[tex]pH=14-5.57\\\\pH=8.43[/tex]

Which makes sense since this sodium benzoate is a basic salt.

Regards!

Will mark brainliest!!!
Can someone please help me with this???

Answers

sorry I can’t help you with this question

Que nombre recibe la división del sistema nervioso que se encarga de la acciones y los procesos involuntarios del cuerpo

Answers

Answer:

Sistema Nervioso Autónomo

Explanation:

El Sistema Nervioso es el encargado de enviar señales (impulsos nerviosos en su mayoría) a órganos y partes del cuerpo, para que ejerzan su función. En general, se compone de 3 divisiones o subsistemas:

Sistema Nervioso Central (cerebro y encéfalo)Sistema Nervioso Perisférico (nervios y ganglios)Sistema Nervioso Autónomo (impulsos involuntarios)

De éstos, el encargado de acciones y procesos involuntarios es el Sistema Nervioso Autónomo (SNA), que a su vez se divide en simpático y parasimpático. El SNA se encarga de los movimientos involuntarios de órganos, como el corazón, el sistema digestivo, etc., y de regular procesos como la secreción de hormonas y la regulación de la temperatura corporal.

A sample of aluminum has a density of 2.7g/cm3. the mass of the aluminum is 11g. what would be the volume of the aluminum sample?​

Answers

Question:-

A sample of aluminum has a density of 2.7g/cm³. The mass of the aluminum is 11g. What would be the volume of the aluminum sample ?

Answer:-

Given:-

Density of a sample of aluminium is 2.7g/cm³.

The mass of the aluminium is 11g.

To Find:-

The volume of the aluminium sample.

Solution:-

We know,

[tex] { \boxed{\bf{\rm \red {Volume \: = \frac{Mass}{Density}}}}} [/tex]

So, [tex] \bf Volume \: = \frac{11}{2.7} [/tex]

[tex] \bf Volume \: = \: 4.07 \: cm³ [/tex]

The volume of the aluminium sample is 4.07 cm³. [Answer]

11. A 30-kg box is 0.2 m long and 0.15 m wide. What pressure does it exert on the floor?

Answers

Answer:

P = 9800 Pa

Explanation:

Given that,

The mass of a box, m = 30 kg

Length of the box, l = 0.2 m

The width of a box, b = 0.15 m

We need to find the pressure it exerted on the floor. Pressure is equal to force acting per unit area. So,

[tex]P=\dfrac{F}{A}\\\\=\dfrac{mg}{lb}\\\\=\dfrac{30\times 9.8}{0.2\times 0.15}\\\\P=9800\ Pa[/tex]

So, 9800 Pa of pressure is exerted on the floor.

How many atoms are in an oxygen molecule?

Answers

Answer:

two atoms

Explanation:

In its stable molecular form, oxygen exists as two atoms and is written O2. to distinguish it from an atom of oxygen O, or ozone, a molecule of three oxygen atoms, O3. Even though each of these is all oxygen, combining atoms of the same element may give very different properties to the molecule.

Which change happens when a fan is turned on?
A. Electrical energy is changed into light energy
B. Heat energy is changed into mechanical energy
C. Mechanical energy is changed into sound energy
D. Electrical energy is changed into mechanical energy

Answers

Answer:

D. Electrical energy is changed into mechanical energy

Explanation:

When you turn on the fan, the electricity that is given through the power outlet allows the fan to have the available energy to spins the fan blades. By the fan's blades spinning, this is a movement that can be described as mechanical energy.


1) For the equation in the picture, write down the molecular formula for each of the following species in the reaction:
a) Acid
b) Base
c) Conjugate Acid
d) Conjugate Base
2) In your own words, what is a Bronsted-Lowry Acid?

Answers

Answer:

yo no ablo inglés amigos jjjj

helpppppppppppppppppppppppppp

Answers

Conductor = Radiator , Frying pan , Ceramic baking dish
Insulator = Winter coat , Oven mitt and ice chest

If the scientist measured the mass of the copper cube after it had been in the furnace for one hour what would the cube’s mass probably be? Explain your answer

Answers

No change mass of copper cube will be the same

Which two statements describe organ systems working together to remove
wastes from the body?
A. The integumentary system gives off thermal energy that comes
from blood vessels.
B. The digestive system breaks down food into molecules that can
move into the blood.
C. The circulatory system carries oxygen-rich blood into muscles in
the legs.
D. The respiratory system exhales carbon dioxide that enters the
lungs from blood vessels.

Answers

I think the answer is D

who will go out with me

Answers

Answer:

i want to see a pic but if you got nice toes all give you my number

Explanation:

Answer:

nah Im good

Explanation:

single forever

1: At which temperature would a reaction withΔH = -102 kJ/mol, ΔS = -0.188 kJ/(mol×K) be spontaneous? 2: At which temperature would a reaction withΔH = 132 kJ/mol, ΔS = 0.200 kJ/(mol×K) be spontaneous?

Answers

Answer:

1: At temperatures below 542.55 K

2: At temperatures above 660 K

Explanation:

Hello there!

In this case, according to the thermodynamic definition of the Gibbs free energy, it is possible to write the following expression:

[tex]\Delta G=\Delta H-T\Delta S[/tex]

Whereas ΔG=0 for the spontaneous transition. In such a way, we proceed as follows:

1:

[tex]0=\Delta H-T\Delta S\\\\T=\frac{-102kJ/mol}{-0.188kJ/mol-K} \\\\T=542.55K[/tex]

It means that at temperatures lower than 542.55 K the reaction will be spontaneous.

2:

[tex]0=\Delta H-T\Delta S\\\\T=\frac{132kJ/mol}{0.200kJ/mol-K} \\\\T=660K[/tex]

It means that at temperatures higher than 660 K the reaction will be spontaneous.

Best regards!

A gas occupies a volume of 500. Milliliters at a pressure of 38.0 kPa and a temperature of 298 K. At what temperature will the gas occupy a volume of 250. Milliliters and have a pressure of 76.0 kPa?

Answers

Answer:

A gas occupies a volume of 250 mL at a pressure of 76 kPa and a temperature of 298 K.

Explanation:

Charles's law states that for a given sum of gas at constant pressure, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases. This mathematical law expresses that the quotient that exists between the volume and the temperature will always have the same value:

[tex]\frac{V}{T} =k[/tex]

Gay-Lussac's law says that when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases. This law mathematically says that the quotient between pressure and temperature is constant:

[tex]\frac{P}{T} =k[/tex]

Finally, Boyle's law says that the volume occupied by a certain gaseous mass at constant temperature is inversely proportional to the pressure. This law is expressed mathematically as

P * V = k

Combined law equation is the combination of three gas laws called Boyle's, Charlie's and Gay-Lusac's law:

[tex]\frac{P*V}{T} =k[/tex]

Analyzing an initial state 1 and a final state 2, it is satisfied:

[tex]\frac{P1*V1}{T1} =\frac{P2*V2}{T2}[/tex]

In this case:

P1= 38 kPaV1= 500 mLT1= 298 KP2= 76 kPaV2= 250 mLT2= ?

Replacing:

[tex]\frac{38 kPa*500 mL}{298 K} =\frac{76 kPa*250 mL}{T2}[/tex]

Solving:

[tex]T2*\frac{38 kPa*500 mL}{298 K} =76 kPa*250 mL[/tex]

[tex]T2=\frac{76 kPa*250 mL*298 K}{38 kPa*500 mL}[/tex]

T2= 298 K

A gas occupies a volume of 250 mL at a pressure of 76 kPa and a temperature of 298 K.

A process used to gain knowledge through observation and investigation is?
science
math
physics
energy
matter

Answers

Answer:matter

Explanation:

matter

make brain

If I plant a green bean seed in the desert, will it grow thick, barrel-shaped stems full of water like a cactus? Why or why not?

Answers

Answer:

No, although the bean crop can grow perfectly in full sun or a little shade in very warm places. It does not mean that they will adopt the growth patterns of the cactus, especially because this plant needs constant watering (in small quantities), very constant. Beans require good drainage for their growth.

Each vegetation have its own characteristics and the power of adaptation. A green bean cannot survive in a desert like a cactus in desert without water. It can only grow thick in soil with proper water content and nutrients.

What is cactus?

Cactus is a type of plant grow in dry regions such as deserts. It can adapt in deserts without water for long time because, the plant have enough water storage in its stem.

Domestic vegetation such as bean, pea, nuts etc ill not grow in dry regions because they cannot adapt in deserts without water. The soil in deserts is dry and have no nutrients.

These conditions prevent the growth of vegetables in desert areas. Moreover, desert have summer season only. The extreme temperature over there will cause the normal plants to diminish.

Therefore, planting green bean in deserts will not make it grow thick like a cactus plant.

To refer more about cactus, refer the link below:

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What is the total volume that you have if you calculated that it weighs 180g?

Answers

For those people looking for the formula for converting volume to weight, and vice-versa, it looks like this (adapted from answers.com): Density = mass/volume (ρ=m/V). So V=m/ρ and has units (kilograms)/(kilograms per cubic meter)=cubic meter.

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

how many electrons does each cl atom gain?

Answers

Answer: 18

Explanation:hope this help

what may happen when two light waves traveling from oposite directoins meet?

Answers

Answer:

The meet

Explanation:

How do I solve this?

Answers

Answer:

The heat contained is 1236 Joules

Explanation:

As we know

[tex]Q = mc\Delta[/tex]T

Where

[tex]\Delta[/tex]T is the change in temperature

m is the mass in grams

c is the specific heat of water (ice) = 2.06 joules/gram

Substituting the given values, we get -

[tex]Q = 20 * (-15+45)*2.06\\Q = 20*2.06*30\\Q = 1236[/tex]Joules

What kind of intermolecular forces between an ammonia molecule and a water molecule? Note: there is more than one type of intermolecular force that acts, be sure to list them all, with a comma between the name of each force

Answers

Answer:

hydrogen bonding

Explanation:

Dipole-Dipole, Dispersion, hydrogen bonding and ion bond

I don't know how to get the volume and it is 10 point removed for it wrong so can someone help me

Answers

16.91


Add all the values for the volume added then divide by 3 because there are three values
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The distribution centers are operated by independent contractors who would be responsible for making their own arrangements to deliver papers to subscribers homes. The 20 drivers retained by the Valley Voice would receive the same hourly rate as they currently earn, and the independent contractors would receive 20 cents for each paper delivered.Required:1. What payroll information does Turkey need in order to make a decision about adopting the alternative distribution method?2. Assume the following information:a. The average driver earns $42,000 per year.b. Average employee income tax withholding is 15 percent.c. The social security tax is 6.2 percent of the first $122,700 of earnings.d. The Medicare tax is 1.45 percent of all earnings.e. The state unemployment tax is 5 percent, and the federal unemployment tax is 0.6 percent of the first $7,000 of earnings.f. Workers compensation insurance is 70 cents per $100 of wages.g. 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