Hydrogen is placed separately from the other elements in the periodic table because it
A. Is a gas
B. Has atomic number 1
C. Has many unique properties
D. Does not exist as a free element in nature

Wind power and hydroelectric power are renewable resources whereas, steel, gemstones, apple tress coal and oil etc. are non- renewable sources. Hence, they cannot be regenerated when exhausted.

Renewable sources are resources that can used for longer period or eternal. They can be regenerated and reused even after consumption of the existing amount. Wind power, solar power, hydroelectric power etc. are renewable sources and they are nature genuine.

Non- renewable sources are those which cannot be regenerated once they are exhausted. For example,  petroleum, coal, oil, diesel etc. are non-renewable because, once they completed from the earth, they cannot be regenerated or  excavated.

Non-renewable sources are creating pollution by the production of toxic hydrocarbon gases as well. Gemstones are non renewable because, once they consumed, they cannot be generated.

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Answer:

10.875 miles

So 87 minutes

.125 miles per minute

So just multiply int his case

87*.125

You’d get 10.875

Answer:

0.049 mol/L.s

Explanation:

The decomposition of hydrogen peroxide is:

[tex]H_2O_2 \to H_2O + \dfrac{1}{2}O_2[/tex]

[tex]Rate = -\dfrac{\Delta [H_2O_2]}{\Delta t}= \dfrac{\Delta [H_2O_2]}{\Delta t}= \dfrac{ 2 \Delta [H_2O_2]}{\Delta t}[/tex]

The rate of decomposition reaction = the rate of formation of [tex]H_2O[/tex] = 0.098 mol/L.s

∴

Rate of formation of [tex]O_2[/tex] [tex]= \dfrac{ rate \ of \ reaction }{2}[/tex]

[tex]= \dfrac{ 0.098 }{2}[/tex]

= 0.049 mol/L.s

Answer:

diamond and pure sugar.

Explanation:

brainliest?

0.692 mol CaCl₂

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Step 1: Define

4.17 × 10²³ atoms CaCl₂

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

0.692461 mol CaCl₂ ≈ 0.692 mol CaCl₂

Answer:

c. protons

Explanation:

A "proton" is a subatomic particle that is stable and is positively-charged. You will identify the number of protons that is present in the nucleus of a chemical element by its "atomic number." It gives us an identity of the element, therefore, every atom of the same element have the "same" number of protons. For example, the number of protons for "Hydrogen" is 1. This means that even if you have two atoms of Hydrogen, each of them has "1" as the number of proton.

Answer:

Cl is not a compound because compounds are made up of atoms from MORE than one element. Since Cl is a singular element is cannot be a compound

Explanation:

Just think of it as Compounds are always more than one elements are always Single

Answer:

Sodium oxide reacts exothermically with cold water to produce sodium hydroxide solution. A concentrated solution of sodium oxide in water will have pH 14. ... For example, it reacts with dilute hydrochloric acid to produce sodium chloride solution.

Answer:

Mass = 156.195 g

Explanation:

Given data:

Mass of SO₂ = 125 g

Mass of O₂ = 50.00 g

Mass of SO₃ produced = ?

Solution:

2SO₂ + O₂   →     2SO₃

Number of moles of SO₂:

Number of moles = mass/molar mass

Number of moles = 125 g/ 64.1 g/mol

Number of moles = 1.95 mol

Number of moles of oxygen:

Number of moles = mass/molar mass

Number of moles = 50.00 g/ 32 g/mol

Number of moles = 1.56 mol

Now we will compare the moles of SO₃ with SO₂ and O₂

                         O₂         ;          SO₃

                          1           ;            2

                         1.56      :          2/1×1.56 = 3.12 mol

                      SO₂        ;          SO₃

                          2          ;            2

                         1.95       :          1.95

Less number of moles of SO₃ are produced by SO₂ it will act as limiting reactant:

Mass of SO₃ :

Mass = number of moles × molar mass

Mass =  1.95 mol × 80.1 g/mol

Mass = 156.195 g

Answer:

Newton's second law of motion describes the relationship between an object's mass and the amount of force needed to accelerate it.

Explanation:

Answer:

2 combustion

3 combustion

4 decomposition

5 replacement

6 Decomposition

Note:

Im not really sure if those r right.

It may be right actually.

To solve such this we must know the concept of chemical reaction. Therefore, the type of reaction can be given as below. To know the type of reaction we must balance the reaction first.

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

balanced equation         types of chemical reaction.

Ca(OH)[tex]_2[/tex]  [tex]\rightarrow[/tex]CaO + H[tex]_2[/tex]O     decomposition

MgO + H2O [tex]\rightarrow[/tex] Mg(OH)[tex]_2[/tex]  combination

CH[tex]_4[/tex]+ 2O[tex]_2[/tex]  [tex]\rightarrow[/tex]CO[tex]_2[/tex] + 2H[tex]_2[/tex]O  combustion

KCIO[tex]_3[/tex] [tex]\rightarrow[/tex]2KCI+ 3O[tex]_2[/tex]            decomposition

NH[tex]_3[/tex] + H[tex]_2[/tex]O[tex]\rightarrow[/tex] NH [tex]_4[/tex]OH        combination

Zn + 2HCI [tex]\rightarrow[/tex]ZnCl[tex]_2[/tex] + H[tex]_2[/tex]      displacement

Therefore, the type of reaction can be given as above.

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Answer:

Yes because

Explanation:

Answer:yes because the battery's electrical energy will make the wheels turn.

Answer:

#1. single replacement 2 1 2 1

#2. synthesis 1 3 1

#3. combustion 1 5 3 4

Chloroplasts is an important part in the process of photosynthesis in some organisms. The chloroplast absorbs the energy in sunlight and uses it to produce sugars.

The main function of chloroplast in plants is to convert light energy into chemical energy via the photosynthesis process.

Photosynthetic chlorophyll is found in chloroplasts, which catch sunlight and converts it into chemical energy, releasing oxygen from water. All green plants and algae have chloroplasts. Chloroplasts help plants in the formation of food.

Chloroplasts are found in the leaves of the plant's guard cells. Chloroplasts contain a lot of chlorophyll, which helps to trap sunlight.  The chloroplast is capable of reproducing without any help from the rest of the cell.

The primary job of chloroplast is to produce food through the photosynthesis process. Chloroplast has a component called chlorophyll, which traps sunlight and is used for food synthesis or sugar and other organic molecules in all green plants. They also form lipid components and amino acids that are required for chloroplast membranes.

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Answer:

since the temperature is approximate to room temperature at a small pressure of 25atm, carbon dioxide is in gas phase.

Answer:

Explanation:

C. It is in the gas phase.

Tungsten is an element. It is located in the d -block of periodic table. Thus it is a transition metal. Hence, option B is correct.

Tungsten is 74th element in periodic table. It is a transition metal thus, located in the d-block of periodic table. Tungsten has the chemical symbol W. Tungsten was first identified as an element in 1781.

The maximum melting temperature of any known element other than carbon, 3,422 °C, is reached by the unbound element, making its resistance all the more remarkable (which sublimes at atmospheric pressure). Tungsten has a boiling point of around 5930°C.

A few of the many alloys that contain tungsten and have many applications include radiation shielding, X-ray tubes, electrodes in gas tungsten arc welding, superalloys, and incandescent light bulb filaments.

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Answer:

The answer for this question is Cs

Shape Formula Variables

Cube V=s3 s is the length of the side.

Right Rectangular Prism V=LWH L is the length, W is the width and H is the height.

Prism or Cylinder V=Ah A is the area of the base, h is the height.

Answer:

it might be wrong but just copy and paste it

Explanation:

hehe ✋

Answer:

An orbit is the simple planar representation of an electron. An orbital refers to the dimensional motion of an electron around the nucleus in a three-dimensional motion. An orbital can simply be defined as space or the region where the electron is likely to be found the most.

Explanation:

Answer:

An orbital on the other hand is simply the probable area where one can expect to find the maximum density of electron presence within an atom. An orbit on the other hand is simply present in a body with a certain mass, while an orbital exists for an electron as well as an atom.

Thus, these are the simple differences between Orbit and Orbitals. It is important to know the major differences, you can check out the differences between Orbit and Orbitals below:

Differences between Orbit and Orbitals

Orbit Orbitals

An orbit is the simple planar representation of an electron. An orbital refers to the dimensional motion of an electron around the nucleus in a three-dimensional motion.

It can be simply defined as the path that gets established in a circular motion by revolving the electron around the nucleus An orbital can simply be defined as the space or the region where the electron is likely to be found the most.

The shape of molecules cannot be explained by an orbit as they are non-directional by nature. The shapes of the molecules can be found out as they are directional by nature.

An orbit that is well-defined goes against the Heisenberg principle. An ideal orbital agrees with the theory of Heisenberg’s Principles.

Thus, these are the major differences between Orbit and Orbitals.

The molar concentration of the original HF  solution : 0.342 M

Further explanation

Given

31.2 ml of 0.200 M NaOH

18.2 ml of HF

Required

The molar concentration of HF

Solution

Titration formula

M₁V₁n₁=M₂V₂n₂

n=acid/base valence (amount of H⁺/OH⁻, for NaOH and HF n =1)

Titrant = NaOH(1)

Titrate = HF(2)

Input the value :

[tex]\tt 0.2\times 31.2\times 1=M_2\times 18.25\times 1\\\\M_2=0.342[/tex]

Answer: carbon dioxide

Explanation: because it is 1 carbon and 2 oxygen, and two means di-.

That would be 1.0033 meters, hope this helps ^^

Answer:

39.5 in = 1.0033 meter

Explanation:

Answer:

infinite yield woth sentence

Explanation:

this comple3tes sentence bc infinite yield

it does es

Moles of Aluminum needed : 0.8

Given

1.2 moles H₂

Required

moles of aluminum

Solution

The reaction coefficient in a chemical equation shows the mole ratio of the components of the compounds involved in the reaction (reactants and products)

Reaction(balanced equation)

2Al + 6 HCl = 2AlCl₃ + 3H₂

From the equation, mol ratio of Al : H₂ = 2 : 3, so mol Al :

= 2/3 x mol H₂

= 2/3 x 1.2

= 0.8 moles

Explanation:

done

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