_________________ is an energy resource harnessed from flowing water.

Answer:

pH = 14

Explanation:

pOH = -log[OH-] = -log1,0 = 0

pH + pOH = 14

pH = 14 - pOH = 14 - 0 = 14

Answer:

Explanation:

hope it helps

it is not table salt

Explanation:

Table salt dissolves in water.

Answer:

One way an animal may adapt to the environment and change characteristics is for example lizards. Lizards are preyed on by birds and other small mammmals. To avoid this some lizards have adapted to color changes or camofaluge.

Explanation:

Answer:

take a octopus for example, they change thw color of their skin to match their environment to stay hidden.

Explanation:

or take a decomposing plant for example, they mimik the process of decomposing to draw animals away

Answer:

[tex]V_{CuCl_2 }= 43.6mL[/tex]

Explanation:

Hello there!

In this case, according to this titration problem, it is possible to note there is a 1:3 mole ratio of CuFeS2 to CuCl2; it means that we can use the following equation:

[tex]3*n_{CuFeS_2}=n_{CuCl_2 }[/tex]

Thus, by introducing the mass and molar mass of the former and the volume and concentration of the latter, we write:

[tex]3*0.20gCuFeS_2*\frac{1mol}{183.51g} =V_{CuCl_2 }*0.075\frac{mol}{L} \\\\V_{CuCl_2 }=\frac{0.00327mol}{0.075mol/L}*\frac{1000mL}{1L} \\\\V_{CuCl_2 }= 43.6mL[/tex]

Regards!

Answer:

the sample is a homogeneous mixture

Explanation:

i hope this is correct SO sorry if it is wrong

Answer:

th answer is the sample is homoheneous mixture.

Explanation:

sorry if it,s wron.

Answer:

k = [F2]² [PO]² / [P2] [F2O]²

Explanation:

In a chemical equilibrium, the equilibrium constant expression is written as the ratio between the molar concentration of the products over the molar concentration of the reactants. Each species powered to its reaction coefficient. For the equilibrium:

P2(g) + 2F2O(g) ⇄ 2PO(g) + 2F2(g)

The equilibrium constant, k, is:

k = [F2]² [PO]² / [P2] [F2O]²

Answer:

A. 20.866%

Explanation:

First, we calculate molar mass of Li3PO3

Molar mass of Li3PO3 = 6.9 (3) + 31 + 16(3)

= 20.7 + 31 + 48

= 99.7g/mol

To calculate the percent composition of Lithium, we say:

Mass of lithium in compound/mass of compound × 100

% composition = 20.7/99.7 × 100

= 0.208 × 100

= 20.8%.

Answer:

E_a = 103.626 × 10³ KJ/mol

Explanation:

Formula to solve this is given by;

Log(k2/k1) = (E_a/2.303R)((1/T1) - (1/T2))

Where;

k2 is rate constant at second temperature

k1 is rate constant at first temperature

R is universal gas constant

T1 is first temperature

T2 is second temperature

We are given;

k1 = 2.8 × 10^(-3) /s

k2 = 4.8 × 10^(-4) /s

R = 8.314 J/mol.k

T1 = 60°C = 333.15 K

T2 = 45°C = 318.15 K

Thus;

Log((4.8 × 10^(-4))/(2.8 × 10^(-3))) = (E_a/(2.303 × 8.314))((1/333.15) - (1/318.15))

We now have;

-0.76592 = -0.00000739121E_a

E_a = -0.76592/-0.00000739121

E_a = 103.626 × 10³ KJ/mol

Coal is extracted by mining.

Once coal has been extracted, it can be used directly  for heating and industrial processes or to fuel power plants for electricity.

Benefits are:

Coal energy is an affordable energy source because of the coal's stable price compared to other fuel sources.

Coal is easy to burn.

Coal produces high energy upon combustion.

Coal energy is inexpensive.

Answer:

Exothermic reaction

Explanation:

An exothermic process releases heat, causing the temperature of the immediate surroundings to rise

The potential energy diagram for a reaction starts at 180 kJ and ends at 300 kJ. the type of reaction does the diagram best represent exothermic reaction.

An exothermic reaction would be one in which heat energy is emitted. Exo stands for "evolve out." The term "thermos" refers to a container that holds heat. The term "exothermic" refers to a process in which heat is produced. In general, an exothermic reaction is one in which heat is released as a byproduct.

Therefore, the reaction diagram will represent exothermic reaction.

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Answer: A planet from a rain forest would not survive in a desert home, for the fact they depend on water and as these live from water, without it, this leads to dehydration and with loss of water with plants, nothing is able to survive when it comes to a rain forest plant being in a desert home. Another reason is the high trees and leaves that are providing the plants enough sunlight or shade to grow, it guarantees to help keep the temperature normal. Being in a deserted area would mean that there would be a temperature change, something the plant is not used to. Without that needed shade and avoiding the scorching sun, they will die out from how different the temperature is, and how hot it is.

Explanation: I hope this helped you.

okay, the answer should be simple and easy, plants from a rainforest would not survive in a desert because the plants in the rainforest do get water, sunlight and air whereas the plants in the desert have Sunlight which is very hot. so if a plant in the rainforest was transferred to the desert it will hard to survive and it will eventually die because they will not get water that will be needed and the plant can get sunburns with the too hot temperature.

Answer:

false

Explanation:

Inertia is the resistance of any physical object to any change in its velocity, so it can't move by itself. Only by a different entity.

Answer: False

Explanation: In order to understand this, you need to understand what inertia means. In short, inertia is a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.

Explanation:

The location of fossils in rock layers provides evidence of Earth's past landscapes. ... Scientists use a technique called radiocarbon dating to find out the age of the fossils. Once they know the age of the fossil in the rock, they also know that rock itself is about the same age!

Answer:

See Explanation

Explanation:

Evaporation is an endothermic process, an endothermic process is one in which energy is absorbed from the surrounding thereby making the system to be at a lower temperature compared to the environment.

Being an exothermic process, molecules take away energy from the liquid surface as they escape from the liquid surface hence, evaporation causes the temperature of the water to be decreased below room temperature.

The rate of evaporation and cooling depends on the surface area of liquid. The liquid in the wide and shallow container has a greater rate of cooling because it has a greater surface area than the liquid in the narrow and deep container.

Answer:

A the boiling point to increase

Explanation:

That is a colligative property

Answer:

this is your answer.....

Answer:

6 that will be the answer

Answer:

(C) 180.0 g of C6H12O6 dissolved in 500.0 mL of solution

Explanation:

Molarity is mole/volume.

1. Find the mass of C6H12O6 in 1 Liter of 2.0 solution

(2 mol C6H12O6 / L) * (180 g / mol C6H12O6) = 360 g C6H12O6

There are 360 g C6H12O6 in 1000 mL of solution

2. Compare the value you found in step 1 to each of the multiple choice answers.

180.0 g of C6H12O6 dissolved in 500.0 mL of solution is exactly proportional to 360 g C6H12O6 in 1000 mL of solution.

The preparation which produces a 2.0 M solution of C₆H₁₂O₆ is 180.0 g of C₆H₁₂O₆ dissolved in 500.0 mL of solution.

Molarity is defined as the number of moles of solute present in per liter of solution.

Moles of any substance will be calculated as :

n = W/M, where

W = given mass

M = molar mass

In the question given that molar mass of C₆H₁₂O₆ is 180 g/mole, and let we have produced the solution of 2 molarity by these amount in 1 liter i.e.

2 = n/1

n = 2 moles

Now by using these moles we can calculate the required mass of C₆H₁₂O₆ as:
2 = W/180

W = 360g

From this it is clear that for the preparation of 1 liter of solution of 2 molarity 360g of C₆H₁₂O₆ is required. So in 500mL of solution, 180 g of C₆H₁₂O₆ will use.

Hence, option (C) is correct i.e. 180.0 g of C₆H₁₂O₆ dissolved in 500.0 mL of solution.

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Answer:

At STP, 1 mole = 22.4 litres

Now, at STP 22.4 litres N2 gas = 1 mole

Therefore, 1.75 litres N2 gas = 1.75/22.4 = 0.078125 moles

Explanation:

here is your answer

According to the standard temperature and pressure conditions,there are 0.078 moles in 1.75 L of nitrogen gas at STP.

Standard temperature and pressure are defined as a standard set of conditions required for experimental measurements which are established to allow comparison between different sets of data.

Standards which are commonly used are those International Union of pure and applied chemistry and national institute of standards and technology.These are not universally accepted standards but are the ones which are commonly used.

Standard conditions of pressure and temperature are necessary to define standard reference conditions used to express volumes of liquids and gases.

These values are important to physicists, chemists ,engineers ,pilots and navigators.

At STP, 1 mole of nitrogen gas occupies 22.4 L

∴1.75 L will occupy 1.75/22.4=0.078 moles

Thus , there are 0.078 moles in 1.75 L of nitrogen gas at STP.

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Car D

Because it is the heaviest. Kinetic energy is directly proportional to the velocity and mass of the object. All the cars have the same velocity. But Car D has the most mass. So, it has most kinetic energy, because more the mass more the energy.

Answer:

A

Explanation:

H2SO4 name is Sulfuric Acid. I hoped that helped !

Answer:

Non-polar and non-polar molecules do not attract each other.

Explanation:

Dont forget to mark me as brainliest if it helped you ( Seriously you will thank me later)

Some molecules have positive and negative ends, these are called polar molecules. Like ends repel each other and unlike ends attract each other.

Answer:

42.45 L

Explanation:

Using the Charle's law equation as follows:

V1/T1 = V2/T2

Where;

T1 = initial temperature (K)

T2 = final temperature (K)

V1 = initial volume (L)

V2 = final volume (L)

Based on the information provided in this question;

V1 = 46.0 L

V2 = ?

T1 = 12°C = 12 + 273 = 285K

T2 = -10°C = -10 + 273 = 263K

Using V1/T1 = V2/T2

46/285 = V2/263

Cross multiply

285V2 = 46 × 263

285V2 = 12098

V2 = 12098 ÷ 285

V2 = 42.45L

The new volume of the balloon is 42.45 L.

Answer:

the major difference between electricity and magnetism is it presence of magnetism and electricity give you present in a static charge of magnetism president is only felt when they are moving charge as a result of electricity