How many moles are in 3.57 x 10^32 particles?​

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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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:

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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That would be 1.0033 meters, hope this helps ^^

Answer:

39.5 in = 1.0033 meter

Explanation:

Answer:

Helium

Explanation:

Helium has the smallest atomic radius. This is due to trends in the periodic table, and the effective nuclear charge that holds the valence electrons close to the nucleus.

Answer:

Q = 1672.84 j

c = 0.898 J/g.°C

Explanation:

1) Given data:

Mass of water = 23.0 g

Initial temperature = 25.4°C

Final temperature = 42.8° C

Heat absorbed = ?

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

Specific heat capacity of water is 4.18 J/g°C

ΔT = 42.8°C - 25.4°C

ΔT = 17.4°C

Q = 23.0 g ×  × 4.18 J/g°C × 17.4°C

Q = 1672.84 j

2) Given data:

Mass of metal = 120.7 g

Initial temperature = 90.5°C

Final temperature = 25.7 ° C

Heat released = 7020 J

Specific heat capacity of metal = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 25.7°C - 90.5°C

ΔT = -64.8°C

7020 J = 120.7 g ×  c ×  -64.8°C  (Negative sign shows heat is released)

7020 J = 7821.36 g.°C ×  c

c = 7020 J / 7821.36 g.°C

c = 0.898 J/g.°C

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.

Answer:

84130.44698 and 8.413044698*10^4

Explanation:

The __ increases by 1 as you go left to right across the periodic table.

A. Atomic mass

B. Atomic number

C. Number of neutrons

D. Number of ions

Answer C

Answer:

#1. single replacement 2 1 2 1

#2. synthesis 1 3 1

#3. combustion 1 5 3 4

Answer:

true and b are the answers I think

Answer:

true/precipitation

Explanation:

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:

Explanation:

the model assumes that the electron is a wave and tries to describe the regions in space orb orbitals where most likely to be found

Answer:

174.2 grams

Explanation:

This compound is also known as Potassium Sulfate.

The SI base unit for amount of substance is the mole.

1 mole is equal to 1 moles K2SO4, or 174.25 grams.

Answer:

krypton

bromine

selenium

Answer:

Yes because

Explanation:

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

Answer:

665

Explanatio

Answer:

$665

Explanation:

5 hours per week × $7 per hour = $35 per week

$35 per week × 19 weeks = $665

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:

The answer for this question is Cs

Answer:

Nitrogen has one lone pair of electrons

Explanation:

The above two dots in picture are lone pair

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: Hydrogen - 18.286%( mass present)

              Carbon - 81.714%(mass present)

Explanation:

Mass percentage does not have any unit as numerator and denominator contains the same unit. Therefore, the percent composition of C and H in C[tex]_3[/tex]H[tex]_8[/tex] is 81.8% and 18% respectively.

Mass percentage represents the the percentage of each element that is making a particular compound.

Mathematically,

Percentage of mass = (component’s mass ÷ total mass) x 100%

Atomic weight of different element of calcium phosphate

C= 12g/mol , H=1g/mol

Total mass of Carbon element in C[tex]_3[/tex]H[tex]_8[/tex] = 12 × 3 = 36

Total mass of hydrogen atom in C[tex]_3[/tex]H[tex]_8[/tex] = 1 × 8 = 8

Total molar mass of  C[tex]_3[/tex]H[tex]_8[/tex] =36 + 8 =44 g/mole

Percentage of carbon in C[tex]_3[/tex]H[tex]_8[/tex] =36/44× 100  =81.8%

Percentage of hydrogen in C[tex]_3[/tex]H[tex]_8[/tex] =(8÷44)×=18%

Therefore, the percent composition of C and H in C[tex]_3[/tex]H[tex]_8[/tex] is 81.8% and 18% respectively.

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Answer:

2:8

Explanation:

The reaction equation is a given as:

         2C₄H₁₀   +    130₂   →    8CO₂     +     10H₂O  

From the reaction equation, the mole ratio is 2:8

Butane is C₄H₁₀

Carbon dioxide CO₂

From the reaction;

       2 moles of butane will produce 8 moles of carbon dioxide

Answer:

A) 2:8

Explanation:

Took the quiz and was right

Answer:

200 m

Explanation:

Given data:

Speed of larry = 2 m/s

Time taken = 100 s

Distance travelled = ?

Solution:

Formula:

d = st

d = distance

s = speed

t = time

by putting values,

d = 2 m/s× 100 s

d = 200 m

Answer: carbon dioxide

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

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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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]