**Answer:**

plant cells and eukroyatic algae

Please help me, I am confused

**Answer:**

B

**Explanation:**

Ionic compound can conduct electricity

Determine the percent yield for the reaction between 98.7 g of

Sb2S3 and excess oxygen gas if 72.4 g of Sb4O6 is recovered along with an unknown amount of sulfur dioxide.

Convert 98.7 g Sb2S3 to mols.

Convert mols Sb2S3 to mols Sb4O6 using the coefficients in the balanced equation.

Convert mols Sb4O6 to grams Sb4O6. (This is the theoretical yield.)

Convert grams Sb4O6 to percent Sb4O6.

%Sb4O6 = [72.4/theoretical yield]*100

So basically your answer is 85.5%

Convert mols Sb2S3 to mols Sb4O6 using the coefficients in the balanced equation.

Convert mols Sb4O6 to grams Sb4O6. (This is the theoretical yield.)

Convert grams Sb4O6 to percent Sb4O6.

%Sb4O6 = [72.4/theoretical yield]*100

So basically your answer is 85.5%

The **percent yield** of the reaction would be **85.64%**

From the balanced equation of the reaction:

[tex]9 O_2 + 2 Sb_2S_3 ---> 6 SO_2 + Sb_4O_6[/tex]

Mole ratio of Sb2S3 to Sb4O6 is 2:1

Mole of 98.7g Sb2S3 = 98.7/339.7

= 0.29 moles

Equivalent mole of Sb4O6 = 0.29/2

= 0.145 moles

Mass of 0.145 Sb4O6 = 0.145 x 583

= 84.535 g

Percent yield = yield/theoretical yield x 100

= 72.4/84.535 x 100

= **85.64%**

More on **percent yield** can be found here: https://brainly.com/question/2506978?referrer=searchResults

how many atoms in 10.0 g of Ar?

**Answer:**

1.51 x 10^23 atoms of Ar

**Explanation:**

Start out with what you're given.

10.0 g of Ar/1 * 1 mol/39.948 g Ar * 6.022*10^23 atoms/1 mol

(It's easier if you write it out.)

You always want to start out w/ what you're given and continue your unit conversions from there. Since you started out with grams of Argon, you want grams of Argon on the bottom to cancel it out. Once you found the unit conversion: 1 mol/39.948 g Ar (molar mass of Ar), now it's time to convert to atoms. Since 1 mol is up on top, put 1 mol on the bottom. Considering you're looking for atoms, use Avagradro's number: 6.022*10^23.

Once simplified, you should get 1.51 x 10^23 atoms of Ar.

***I hope this helps! I also suggest using a mole map, if you're interested.***

Why are scientists worried that climate change will cause these toxic algae blooms to become more frequent?

**Answer:**

I would assume it would kill marine life and or a shift in the climate may possibly create a better environment for the algae to grow Don't quote me on that though I couldn't tell you

**Answer:**

It may kill marine life and or a shift in the climate might make better growth of algae possible.

A rectangular poster is /4 yard wide and / yard tall. What is its area? Solve this problem any way you choose

**Answer:**

Area of rectangular poster = [tex]\frac{3}{16}[/tex] yard²

**Explanation:**

**P.S - The exact question is -**

**Given -** A rectangular poster is [tex]\frac{1}{4}[/tex] yard wide and [tex]\frac{3}{4}[/tex] yard tall.

**To find -** What is its area ?

**Proof -**

We know that ,

The area of rectangle = Length × Breadth

Here,

Given that,

Length of rectangle = [tex]\frac{3}{4}[/tex] yard

Breadth of rectangle = [tex]\frac{1}{4}[/tex] yard

∴ we get

Area of rectangular poster = [tex]\frac{3}{4}[/tex] × [tex]\frac{1}{4}[/tex] yard²

= [tex]\frac{3}{16}[/tex] yard²

⇒Area of rectangular poster = [tex]\frac{3}{16}[/tex] yard²

What does steel classify as?

A. Compound

B. Mixture

C. Element

D. Electrons

it’s C. Element because Steel is classified into four groups Carbon,Alloy, Stainless, and Tool. Carbon Steels only contain trace amounts of elements besides carbon and iron.

it’s is c because it is c

Convert 15oc to K

(l’ll mark you as brainlister)

15+273.15=288.15K.......

**Answer:**

15oC to K

oC +273

15+273

288K

What term is used by scientists to describe the gradual increase in surface temperature of the earth?

global warming, the gradual increase of the temperature of the earth's lower atmosphere as a result of the increase in greenhouse gases since the Industrial Revolution. Global warming and its effects, such as more intense summer and winter storms, are also referred to as climate change.

How do nuclear reactions

produce energy?

nuclear energy originates from the splitting of urinal atoms a process called fish and degeneracy to produce steam which is used by a turbine generator to generate electricity.

1. Place the following in order from largest amount of water found on Earth to the smallest:

glaciers and ice caps, ground water, ocean

**Answer:**

ocean, glaciers and ice caps,

ground water

**Explanation:**

How many kilograms of water must be added to 6.07 grams of oxalic acid (H2C2O4) to make a 0.025 m solution?

This dilution problem uses the equation

M

a

V

a

=

M

b

V

b

M

a

= 6.77M - the initial molarity (concentration)

V

a

= 15.00 mL - the initial volume

M

b

= 1.50 M - the desired molarity (concentration)

V

b

= (15.00 + x mL) - the volume of the desired solution

(6.77 M) (15.00 mL) = (1.50 M)(15.00 mL + x )

101.55 M mL= 22.5 M mL + 1.50x M

101.55 M mL - 22.5 M mL = 1.50x M

79.05 M mL = 1.50 M

79.05 M mL / 1.50 M = x

52.7 mL = x

59.7 mL needs to be added to the original 15.00 mL solution in order to dilute it from 6.77 M to 1.50 M.

I hope this was helpful.

M

a

V

a

=

M

b

V

b

M

a

= 6.77M - the initial molarity (concentration)

V

a

= 15.00 mL - the initial volume

M

b

= 1.50 M - the desired molarity (concentration)

V

b

= (15.00 + x mL) - the volume of the desired solution

(6.77 M) (15.00 mL) = (1.50 M)(15.00 mL + x )

101.55 M mL= 22.5 M mL + 1.50x M

101.55 M mL - 22.5 M mL = 1.50x M

79.05 M mL = 1.50 M

79.05 M mL / 1.50 M = x

52.7 mL = x

59.7 mL needs to be added to the original 15.00 mL solution in order to dilute it from 6.77 M to 1.50 M.

I hope this was helpful.

Describe the motion of water molecules in a wave.

Lesson 2.13

Question 5 options:

Water molecules move up and forward, down and back, in an overall circular motion.

All of the choices

none of the choices

Water molecules don't move

**Answer:**

Molecules in the water move in a circular motion

**Explanation:**

Because of its circular motion it causes the waves to look like open circles which makes it easy for people to surf on

Water molecules move up and forward, down and back, in an overall **circular motion **in the **wave**. Therefore, option **A **is correct.

**Circular motion **is defined as the **movement **of an object while rotating in a circle. Circular motion can be uniform or **asymmetric**.

The **angular rate **of rotation and speed are constant in uniform circular motion, but the rate of rotation changes in **non**-**uniform **circular motion.

This means that circular motion can occur only if there is a "**center seeking**" force present; otherwise, things will travel in a straight line.

Within the wave, the water molecules move in a **circular motion**. Each water particle moves in a complete circle during a single wave period. The **circle** **traced **by a water particle on the ocean surface as a wave passes a given point has a diameter equal to the height of the **wave**.

Thus, option **A **is correct.

To learn more about the **circular motion**, follow the link;

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Helpp me pretty please

Im pretty sure the answer is distance and mass

Answer : distance and mass !

Sedimentary

Weathering

erosion, transport

deposition

Heat and/or

pressure

Igneous

Metamorphic

The

Rock

Cycle

Intrusion or

eruption

Burial and

extreme heat

Magma

Look at the diagram above.

Which sentence BEST describes a process in the rock cycle?

Igneous rocks can become metamorphic and sedimentary rocks.

Metamorphic rocks can form by the weathering process,

Volcanoes can deposit sedimentary rock to form mountains.

O Sedimentary rocks can melt to become metamorphic rocks.

**Answer:**

I am confident that it is the last answer but if you can find a more verified answer I would go for that.

What is the mass of 0.25 moles of sulphur dioxide

**Answer:**

this is the answer okkkkkkkkkkkkkkkk

A student pushes a box with a force of 20 N to the right and another student pushes the box with a force of 5 N to the left.

What is the net force and direction in which the box moved?

The net force is 15 and the box moves to the right

The net** force** acting on the box is **15 N **which is the difference of the two **acting forces **and the box shifts to the right in the direction in which greater amount of force is applied.

**Force **is defined as a cause which is capable of changing the **motion** of an object. It can cause an object which has mass to change it's velocity. It is also simply a push or a pull . It has both **magnitude **as well as **direction.**Hence, it is a **vector** quantity.

It has **SI units **of **Newton** and is represented by'F'.**Newton's second law **states that force which acts on an object is equal to **momentum** which changes with time. If mass of object is constant,** acceleration **is **directly proportional **to **net force **acting on an object.

The concepts which related to force are **thrust **and** torque** .Thrust increases the velocity of an object and torque produces change in rotational speed of an object.

Learn more about** force,**here:

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HELP PLEASE!!!!!

show work

I’m not sure how to show the work

You should download the app chem balance

It’s great for this kind of homework

You should download the app chem balance

It’s great for this kind of homework

Magnesium hydroxide is 54.87% oxygen by mass.

How many grams of oxygen are in 175 g of the com-

pound? How many moles of oxygen is this?

**Answer:**

hhmxui

**Explanation:**

Why does a basketball deflate when left outside overnight?

**Answer:**

I hope it's help uu

if wrong then sry

What is the density of a sample with a mass of 5250g and a volume of 4.5mL

**Answer:**

1166.67

**Explanation:**

density=mass/volume

density= 5250/4.5

density=1166.67g/mL

If the Moon is in the position shown, what is the view from Earth?

**Answer:**

When the Moon is in the position shown below, how would the Moon look to an observer on the North Pole ... The moon's rotational period is equal to its revolutional period around Earth.

**Explanation:**

word equation for HgO → Hg +O2

I hope this one is helping you

White arctic hares blending in with the white snow in their environment is an example of what type of camouflage?

A. hiding

B. protective resemblance

C. mimicry

D. protective coloration

**Answer:**

The answer to your question is A.

D. Protective coloration. **Protective coloration,** also known as "crypsis," is a defense mechanism used by animals to avoid detection by predators or prey.

An illustration of protective coloration, which is a sort of camouflage, is how **white arctic **hares blend in with the white snow around them. Animals use protective coloration, commonly referred to as "**crypsis**," as a defensive strategy to evade being seen by predators or prey.

In this instance, the white arctic hares' fur is the same **shade** as that of their snowy environment. Their chances of survival are increased by this merging, which enables them to remain unnoticed and effectively hidden from predators like **polar foxes** or birds of prey. They have a better chance of escaping or avoiding detection when they are well-camouflaged, making it difficult for predators to see them against the white background.

To know more about **arctic**:

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Hey. Answers to this?:

I set off on a journey from the Earth to our nearest galaxy - ________. It will take me around 2 million ______ ______ before I reach my destination. As my space shuttle ascended it went through the Earth’s atmosphere in a great display of glowing lights. I reached the _______ __________ zone and started to float in my cockpit. The spacecraft went farther away, making the Earth look much smaller. I saw the bright light of our ________ _________ - the Moon. I speeded up, crossing the orbit of our ________ _______ - Mars. It took a great deal of skill to safely manoeuvre my spacecraft through the area of giant, rocky pieces of cosmic rubble, known as an _____ ______. As I accelerated, I entered the region of our ________ _______. I went zooming past Jupiter, Saturn and ________. I took a glimpse of our poor demoted dwarf planet - _______. Eventually, I was far enough to reach the outer edges of our ______ _______, with our star _________ in the centre. From that point on I accelerated rapidly, zooming out of our galaxy - ________ _____. What a spectacular view it was to see all the ____ ______ stars spinning in a giant whirlpool of light. Soon I reached the outer edges of our galaxy and went zooming away through the unknown towards Andromeda.

Missing words: the Sun, natural satellite, Uranus, asteroid belt, the Milky Way, outer planets, light years, Pluto, 400 billion, the Andromeda, inner planet, Solar System, zero gravity,

Milky Way

Light years

Zero gravity

Natural satellite

Inner planets

Asteroid belt

Outer planets

Uranus

Pluto

Solar system

The sun

The andromeda

400 billion

Think this is correct

Light years

Zero gravity

Natural satellite

Inner planets

Asteroid belt

Outer planets

Uranus

Pluto

Solar system

The sun

The andromeda

400 billion

Think this is correct

Which condition would have resulted from the functions of prokaryotes on early Earth?

Question 2 options:

Earth's oceans grew larger

less oxygen gas became present in the atmosphere

less carbon became present in Earth's soil

more oxygen gas became present in the atmosphere

the 1 one and the last one

Please help me on this.

Answer is Scandium hope this helps!

a.

1. You touch a shopping cart in the grocery store parking lot. What type of heat

transfer is happening between your hand and the handle?

Conduction

b. Convection

C. Radiation

d. Thermal Equilibrium

The answer is conduction

The transfer of **energy **between systems through work is the expansion of gas in a steam engine. By doing work or by transferring heat, energy can be transferred. Therefore, **option A** is correct option.

**Energy **transfer is a phenomenon in which energy transfer from one **matter **to another matter. Energy requirement is necessary to move any object so work has to be done by the gas to the piston.

**Heat **can be transferred by three ways radiation, convention or conduction. In conduction, direct contact of two body is necessary for transfer of molecules. When we touch a shopping cart in the grocery store parking lot, then **conduction **is the process by which heat is transferred between our hand and the handle.

Therefore, the **option A **is correct option that is **conduction**.

Learn more about **energy transfer**, here:

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Which could cause topsoil to be lost?

wind and water erosion

lack of use

compaction

desertification

**Wind** and **Erosion** lead to Washing away of **top soil**.

**Erosion** is the process that lead to the washing away of **top soil** leading to loss of nutrient, holes and many more.

The agents of **erosion** include **wind**, **water** and so on.

Strong **wind** will lead to the **top soil** to be remove when it is blowing. **Water** also when is is flowing turbulently maybe when rain fall can lead to loss of **top soil**.

Therefore, **Wind** and **Erosion** lead to Washing away of **top soil**.

Learn more about **Erosion** from the link below.

https://brainly.com/question/17905503

In a chemical reaction

1 point

The atoms of the reactants unbond, rearrange and then rebond to form the products

Some atoms disappear while others multiply to form the products

The atoms of the reactants always stay together to form the products

New atoms are formed which combine to make the products

**Answer:**

A) The atoms of the reactants unbond, rearrange and then rebond to form the products

**Explanation:**

Using method of elimination:

A) The atoms of the reactants unbond, rearrange and then rebond to form the products

**This is the correct option.** Chemical reactions involves breaking and forming of new bonds.

B) Some atoms disappear while others multiply to form the products

This option is incorrect. Atoms do not disappear

C) The atoms of the reactants always stay together to form the products

This option is incorrect. The bonds between the atoms in the reactants must first be broken before products can be formed.

D) New atoms are formed which combine to make the products

This option is incorrect. Atoms do not just form out of nowhere.

what makes sherbet fizzy

**Answer:**

The chemical reaction between the citric acid and sodium bicarbonate

**Explanation:**

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