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Answer:

They both orbit the sun

Explanation:

They are both celestial bodies orbiting our Sun.

Answer:

5 gsk

Alei

Explanation:

Bonjour comment tu

Answer:

20.93%

Explanation:

The percent by mass (%mass) of water in the following compound can be calculated thus:

%mass of H2O = mass of 2H2O/mass of compound × 100

Where;

Ca = 40

S = 32

O = 16

H = 1

Hence, the molar mass of CaSO4•2H20 = 40 + 32 + 16(4) + 2{ 1(2) + 16}

= 40 + 32 + 64+ 2{18}

= 172g/mol

Molar mass of 2H2O = 2{2 + 16}

2(18)

= 36g/lol

Therefore, the percent by mass of 2H2O in CaSO4•2H20 is as follows:

36/172 × 100

= 0.2093 × 100

= 20.93%

Answer:

V = 22.34 L

Explanation:

Given data:

Volume of O₂ needed = ?

Temperature and pressure = standard

Number of molecules of water produced = 6.0× 10²³

Solution:

Chemical equation:

2H₂ + O₂       →      2H₂O

Number of moles of water:

1 mole contain 6.022× 10²³ molecules

6.0× 10²³ molecules ×  1 mole  /  6.022× 10²³ molecules

0.99 mole

Now we will compare the moles of oxygen and water.

                  H₂O         :            O₂  

                    2            :              1

               0.996         :          0.996

Volume of oxygen needed:

PV = nRT

V = nRT/P

V = 0.996 mol × 0.0821 atm.L/mol.K ×  273.15 K / 1 atm

V = 22.34 L

Answer:

ok

Explanation:

Answer:

Yes it is balanced

Explanation:

You can check by finding the total of each element on both sides so:

Left Hand Side :

Carbons: 6

Oxygens: 6x2 (carbon dioxide) and 6 (water) so there are 18

Hydrogens: 6x2 (carbon dioxide) so 12

Right Hand Side:

Carbons: 6

Oxygens: 6 (glucose) then 6x2 (oxygen) so there are 18

Hydrogens: 12

Answer:

1.25 gram of cesium-137 will remain.

Explanation:

Given data:

Half life of cesium-137 = 30 year

Mass of cesium-137 = 5.0 g

Mass remain after 60 years = ?

Solution:

Number of half lives passed = Time elapsed / half life

Number of half lives passed = 60 year / 30 year

Number of half lives passed = 2

At time zero = 5.0 g

At first half life = 5.0 g/2 = 2.5 g

At 2nd half life = 2.5 g/ 2 = 1.25 g

Thus. 1.25 gram of cesium-137 will remain.

Answer:

Energy Flow in an ecosystem

Explanation:

The sun gives energy to a producer then to consumers

Steel wool rusts faster because more Surface Area is exposed in a steel wool compared to the iron nail and more surface area means faster rusting rates

have a nice day! (^o^)

Answer:

umm whats the question??

Explanation:

Answer:

Darwin's book introduced the scientific theory that populations evolve over the course of generations through a process of natural selection. It presented a body of evidence that the diversity of life arose by common descent through a branching pattern of evolution.

Answer:

Ca(OH)2 + Cl2 → CaOCl2 +H2O.

Explanation:

Updated answer

Answer:

this is balanced equation

Answer: Cesium is more reactive toward water than lithium because the ionization energy decreases down the group reactivity increases down the group.

Explanation: Please mark me as brainliest and i hope that helped!

Answer:

I hope it helps you

Explanation:

As force will be its Weight  hence ,

Force = Weight

Force = m*g

As given ,

m=60kg  and g= 9.8 m/sec^2

hence putt the values in above formula we get,

F=60*9.8

F= 588 N

please  

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F=mg

F = 60 ×9.8

F = 588 N

Explanation:

I hope it's helps you

Answer:

15 moles of hydrogen gas are needed to react with 15 moles of chlorine gas.

Explanation:

The balanced reaction is:

H₂ (g) + Cl₂ (g) → 2 HCl (g)

By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of the compounds participate in the reaction:

Then you can apply the following rule of three:  If 1 mole of Cl₂ reacts with 1 mole of H₂, 15 moles of Cl₂ with how many moles of H₂ does it react?

[tex]moles of H_{2} =\frac{15 moles of Cl_{2} *1mole of H_{2}}{1moles of Cl_{2}}[/tex]

moles of H₂= 15

15 moles of hydrogen gas are needed to react with 15 moles of chlorine gas.

Answer:

Energy from different sources leads to different types of rock. Energy inside Earth melts rock into liquid rock, but energy from the sun causes rock to weather into small pieces.

Explanation:

Different sources of energy are required in the formation of rocks. A source of energy like the sun is vital in the facilitation of processes pertaining to rock formation that occur on the surface of the earth. Some of these processes include; erosion and weathering.

The internal heat energy from the earth also facilitate rock formation processes that occur at the core of the earth. Some of them include; melting and subduction. So, energy from different sources result to different types of rocks.

Answer:

Because its like wearing someones hat whom they might have lice.

Explanation:

Answer:

Because it may spread through your body quicker than anything else.

Explanation:

Hope this helps ya-Lily

Answer:

1/16 is the answer.........

Answer:

Explanation:

its the latter C. becuse One of the most fantastic displays of electricity in nature is lightning. Lighting occurs when large amounts of electrostatic energy builds up in clouds from the energy of storms.

Answer:

c.Elements in the compound shares electrons

Explanation:

Because in ionic compounds element lose or gain electrons only

Sharing of electrons is the property of covlant compounds.

Answer:

222

Explanation:

because

2x + 78 = 222

2 (72) + 78

2 x 72 = 144

144 + 78 = 222

Where x is you multiply what x equals by the number on the left of it

reactants because it had other chemicals, when more are mixed it will be more stronger.

It is the correct answer

Answer:

The more hydrogen bonds a molecule can make, the higher the surface tension.

Explanation:

The more hydrogen bonds a molecule can make, the higher the surface tension. Therefore, this statement best describes the relationship between bonding and surface tension.

Surface tension exists property of a liquid surface indicated by its acting as if it existed as a stretched elastic membrane. This phenomenon can be regarded in the nearly spherical shape of small drops of liquids and soap bubbles. Because of this property, specific insects can stand on the surface of the water. A razor blade also can be sustained by the surface tension of water. The razor blade exists not floating: if pushed via the surface, it descends via the water.

Hence, The more hydrogen bonds a molecule can make, the higher the surface tension. Thus, this statement best represents the connection between bonding and surface tension.

Therefore, (C) option is the correct answer.

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Answer:

You said you need Hell

Explanation:

Explanation:

Andrews, 4/15/2019 – Cells and Structure of Life Lab Report. Objective(s): In your own words, what was the purpose of the lab? The purpose of this lab was to explain, show, and gather evidence of the cell theory. Procedure: 1.

2021:  Cells and Structure of Life Lab Report. Objective(s): In your own words, what was the purpose of the lab? The purpose of this lab was to explain, show, and gather evidence of the cell theory. Procedure: 1.

Answer:

The Kelvin temperature scale is the scale that is based on molecular motion and so absolute zero is also called 0K.

Explanation: The Kelvin temperature of a substance is directly proportional to the average kinetic energy of the particles of the substance.

Answer:

98.76 g

Explanation:

Use the formula mass=moles x MM :)

The mass of .89 moles of calcium chloride, used as an ice-melter is 98.76g.

A body's mass is an inherent quality. Prior to the discovery of the atom and particle physics, it was widely considered to be tied to the amount of matter in a physical body.

The amount of matter that makes up every object or body is the greatest way to understand mass. Everything that we can see has mass. Examples of objects with mass include a table, a chair, your bed, a football, a glass, and even air. The mass of a thing determines whether it is light or heavy.

Simply put, mass is a measurement of a body's amount of matter. Matter is everything that has both volume and mass. Although mass cannot be seen, it can be measured or quantified.

mass = moles x MM

= 0.89 × 110. 98 g⋅mol

= 98.76 g

Thus, The mass of .89 moles of calcium chloride, used as an ice-melter is 98.76g.

To learn more about mass, follow the link;

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Answer:

the answer is 1- loses

Explanation:

When water freezes it gives up some of the water's energy.

Answer:

A + B → AB:  

✔ synthesis

AB → A + B:  

✔ decomposition

Hydrocarbon + O2 → CO2 + H2O:  

✔ combustion

AB + CD → AD + CB:   replacement

Explanation: