I need help with number 3 please look at the picture!!

Answer:

A process in which a chemical change, especially decomposition, is brought about by passing an electric current through a solution of electrolytes so that the electrolyte's ions move toward the negative and positive electrodes and react with them.

Answer:

a pgsysyyssysyysysyshshshshshshshshshshshshshss

Answer:

its c ma man .

This is the other ray that will make up the angle ∠AYZ and will complete the constructioExplanation:

if your taking the quick check these were my awnsers

1.c

2.b

3.d

4.c

5 .A

for the copying an angle quick check only

Answer:

1406136 grams

Explanation:

Answer:

Buy her food

Explanation:

food always helps bro. trust.

Answer:

Just talk to her , maybe you did something in the past to hurt her ? Remember to think about the baby and if doesn't work out try to be good co parents together.

Explanation:

Stack effect? I'm not totally sure about this...

Explanation:

Large amount of tiny particles of water droplets, dust and smoke are present on a misty day. These tiny particles in the air scatter blue colour of white light passing through it. When this scattered light reaches our eyes, the smoke appears blue.

Answer:

The correct answer is B. Liquids have less energy than solids.  This is false because liquids have more energy than solids; the particles in a liquid are moving whereas the particles in a solid are almost still (they may vibrate slightly).  This increase in speed of particles translates to kinetic energy, showing us that liquids have more energy than solids.

Explanation:

We can also examine the other answer choices and show why they are incorrect.

Solids have a definite volume and shape.  Think about solids in your house; for example, think about a chair or a block.  The shape of these items cannot be changed, and their volume is unchanging.

There are no intermolecular forces between the particles of a gas. This is assumed to be a property of an ideal gas, which makes sense since the particles in a gas are farther from each other than those in a liquid or a solid.'

Sublimation occurs when a solid turns into a gas.  This is also a true statement; when a solid sublimes, it changes into a gas without ever becoming a liquid.

Hope this helps!

Explanation:

Water waves are an example of waves that involve a combination of both longitudinal and transverse motions. As a wave travels through the waver, the particles travel in clockwise circles. The radius of the circles decreases as the depth into the water increases.

Answer: bright red light

Explanation:

im taking edge

Answer:

the four main spheres of the earth are geosphere, hydrosphere, atmosphere and biosphere

Explanation:

geosphere consists of all rocks on Earth

atmosphere which are the gases that surrounds the earth

hydrosphere which is all the water on the earth

biosphere which are the living things on the earth

Answer:

1)[tex]Time \ for \ pendulum \ swing \ left \ and \ right = 2 \times \pi \times \sqrt{\dfrac{Length \ of \ the \ pendulum \ string}{g} }[/tex]

2) The dependent variable = The time it takes for one pendulum swing

3) The independent variable = The length of the pendulum string with weight at the bottom

Explanation:

The relationship between the length of the pendulum string and the time it takes for one pendulum swing is giving as follows;

[tex]T = 2 \cdot \pi \cdot \sqrt{\dfrac{L}{g} }[/tex]

Where;

T = The period of oscillation = The time to complete one oscillation =Two swings of the pendulum

L = The length of the pendulum

g = The acceleration due to gravity

Therefore, the time it takes for one pendulum swing is directly proportional to the square root of the length of the pendulum

The dependent variable = The time it takes for one pendulum swing

Th independent variable = The length of the pendulum string with weight at the bottom.

Answer:

15

Explanation:

it would probably be the same number!

Answer:

Explanation:

15

Answer:

touched touched

Explanation:

rusting can occure

sonority may take place

Answer:

Explanation:

2 H₂(g) + O₂(g) → 2 H₂O(g

2 moles     1 mole      2 mole

50 g of H₂ = 50 /2 = 25 moles of H₂

100 g of O₂ = 100 / 32 = 3.125 moles of O₂

So oxygen is the limiting reagent .

3.125 moles of O₂ will react with 6.25 moles of H₂ to give 6.25 moles of H₂O .

Hence moles of H₂O produced = 6.25 moles .

Answer:

Explanation:

False but I could be wrong but I’m pretty sure.

Answer:

False.

Explanation:

 An ion has an imbalanced number of protons and electrons. Hope this helps! =)

Answer:

The reference point is the ground.

Explanation:

•Moves slow that you don't notice hope this helps you :) god loves you :)

Answer:

A solid will retain its shape; the particles are not free to move around. Liquid matter is made of more loosely packed particles. It would take the shape of its container. Particles can move about within a liquid,  they are packed densely enough that volume is maintained.

Explanation:

Explanation:

Distinguish chemical substances from mixtures

Key Points

Matter can be broken down into two categories: pure substances and mixtures. Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components.

A chemical substance is composed of one type of atom or molecule.

A mixture is composed of different types of atoms or molecules that are not chemically bonded.

A heterogeneous mixture is a mixture of two or more chemical substances where the various components can be visually distinguished.

A homogeneous mixture is a type of mixture in which the composition is uniform and every part of the solution has the same properties.

Various separation techniques exist in order to separate matter, including include distillation, filtration, evaporation and chromatography. Matter can be in the same phase or in two different phases for this separation to take place.

Terms

substanceA form of matter that has constant chemical composition and characteristic properties. It is composed of one type of atom or molecule.

elementA chemical substance that is made up of a particular kind of atom and cannot be broken down or transformed by a chemical reaction.

mixtureSomething that consists of diverse, non-bonded elements or molecules.

Answer:

a pure substance made up of only one kind

Explanation:

Answer:

The density of a substance that has a mass of 75 g and a volume of 35 mL is 2.14 [tex]\frac{g}{mL}[/tex]

Explanation:

Density is a characteristic property of a substance that relates to the amount of mass it has per unit volume. In other words, density is the property that matter, whether solid, liquid or gas, has to compress into a given space (it measures the amount of mass in a given volume of a substance). It is calculated as the quotient between the mass of a body and the volume it occupies:

[tex]density=\frac{mass}{volume}[/tex]

In this case, you know:

Replacing:

[tex]density=\frac{75 g}{35 mL}[/tex]

Solving:

[tex]density=2.14\frac{g}{mL}[/tex]

The density of a substance that has a mass of 75 g and a volume of 35 mL is 2.14 [tex]\frac{g}{mL}[/tex]

The density should be2.14 g/ml.

Given that,

Based on the above information, the calculation is as follows:

[tex]Density = mass \div volume\\\\ = 75 \div 35[/tex]

= 2.14 g/mL

Learn more: https://brainly.com/question/15959704?referrer=searchResults

Answer:

[tex]0.016\frac{g}{L}[/tex]

Explanation:

Hello,

In this case, the dissociation of calcium fluoride is:

[tex]CaF_2(s)\rightleftharpoons Ca^{2+}(aq)+2F^-(aq)[/tex]

And the equilibrium expression is:

[tex]Ksp=[Ca^{2+}][F^-]^2[/tex]

Which is useful to compute the molar solubility, symbolized by [tex]x[/tex] as the reaction extent:

[tex]Ksp=(x)(2x)^2[/tex]

In such a way, since the solubility product of calcium fluoride at 25 °C is 3.45x10⁻¹¹, the molar solubility is found to be:

[tex]3.45x10^{-11}=(x)(2x)^2\\\\x=\sqrt[3]{\frac{3.45x10^{-11}}{4} }\\ \\x=2.05x10^{-4}M=2.05x10^{-4}\frac{molCaF_2}{L}[/tex]

And the solubility, considering its molar mass 78.08 g/mol is:

[tex]=2.05x10^{-4}\frac{molCaF_2}{L}*\frac{78.08gCaF_2}{L}\\ \\=0.016\frac{g}{L}[/tex]

Regards.

Answer:

Death in the Water: How Plastic Is Poisoning Our Oceans

Liz Greene February 17, 2017

We live in a society obsessed with convenience, and that obsession has made plastic king. Though humankind has greatly benefited from plastic, the environmental costs of this reigning polymer may bring about our downfall. Traveling from land to sea in the wind or through waterways, plastic pollution is causing extensive damage to our marine life and giving life to one of the greatest ecological disasters of our times.

Plastic has been collecting in the marine environment since plastic production began in the 1950s — in fact, each square mile of the ocean contains more than 46,000 pieces of floating plastic. Eight million metric tons of plastics make their way into the ocean each year, hitching a ride on the currents and reaching the furthest corners of our seas — even turning up in the Antarctic wilderness. Simply put, the world’s oceans are becoming a toxic soup of plastic and other debris, and all life is being negatively affected.

Unfortunately, plastic doesn’t biodegrade — though it does eventually photodegrade (i.e., break down into smaller fragments by exposure to the sun). Photodegradation of plastic continues to the molecular level, yet photodegraded plastic remains a polymer. No matter how minute the pieces, they will always be plastic. Unlike naturally based paper or glass, they are not absorbed into or changed by natural processes — plastic never truly goes away.

Explanation:

This is a really good article I found, hope it helps

cells divide for reproduction

Answer:

Significant Figures

Explanation:

1) Annotation category: ...

2)RULES FOR SIGNIFICANT FIGURES.

3) All non-zero numbers ARE significant. ...

4)Zeros between two non-zero digits ARE significant. ...

5)Leading zeros are NOT significant. ...

6)Trailing zeros to the right of the decimal ARE significant. ...

7)Trailing zeros in a whole number with the decimal shown ARE significant.  8) to make you happy :) hope this helps you :)

Answer:

18 electrons

Explanation:

If you search on Google you get the same answer, so the question gives you your answer.

I uh- I'm a bit confused- W h a t

Answer:

The question did not contain any listed options. However, starch is a common white powder that will give a color change on reacting with iodine molecules

Explanation:

Iodine is a common indicator used in the lab to detect the presence of starch or starchy substances.

Iodine molecules react with amylose in starch to form a complex with a deep blue-black coloration.

Hence, a common white powder which reacts with iodine molecules to give a blue-black color must be a substance that contains starch.

The answer is:

d) cornstarch

Answer:

translate? ill edit this later

Explanation:

i don't really know what you are trying to say here, but what i think you are saying is what sounds like a more impressive job?? in my opinion, pseudoscience sounds more fancy and interesting. Since not a lot of people really knows what that is, it sparks conversation.

Answer:

https://brainly.in/question/5343031 use this link

Explanation:

According to the question;

A student takes notes in class as shown below. A. Uses an objective process Is updated constantly B. Is not objective Does not use a process Resists new information.

So the best titles for circumstances A and B will be :

Option C ;

A) characteristics of science because of the scientific methods used for notes taking

B) limitations of science because of the non scientific method or Science resistive methods used for notes taking

Answer:

The answer is " [tex]122.88 \times 10^{-5}[/tex]"

Explanation:

In the given question some data is missing. so, the correct solution can be defined as follows:

Missing values:

[tex]k= 3.0 \times 10^{-5}\\\\NO_2 =6.4 \ mol / l \\\\CO= 4.1 mol / l \\\\NO= 5.2 mol / l \\\\CO_2= 1.3 mol / l\\[/tex]

Given equation:

[tex]NO_2(g) + CO(g) \longrightarrow NO(g) + CO_2(g)[/tex]

In the above equation, the rate is [tex]=k.[NO_2]^2[/tex] because the above given is the part of the second-order, which relates to [tex]NO_2[/tex]. In the zeros order the Carbon monoxide (CO) its reaction doesn't affect the rate.

Calculating the rate:

Rate [tex]=k.[NO_2]^2[/tex]

        [tex]= 3.0 \times 10^{-5} \times 6.4^2\\\\=3.0 \times 10^{-5} \times 40.96\\\\= 122.88 \times 10^{-5}\\[/tex]

Answer:

The Hydrogen gas produced during its reaction with metal gets oxidised to H2O, hence no hydrogen gas is produced. Instead it evolves nitric oxides such as NO2,NO etc.