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Answer:Tungsten is made of tungsten while Nichrome is made of nickel chromium. ... Tungsten is used to make filament of bulbs. Nichrome have high resistivity than tungsten.

Explanation:i hope u have a wonderful night and stay safe

Answer:

is a way of presenting information about the chemical proportions of atoms

Explanation:

Answer:

Barium permanganate | Ba(MnO4)2 - PubChem.

Description: Barium permanganate appears as ...

Synonyms: BARIUM PERMANGANATE7787-3...

Molecular Formula: Ba(MnO4)2 or BaMn2O8

Molecular Weight: 375.2 g/mol

Explanation:

Answer:

Dalton's atomic theory has been modified as

Explanation:

Atoms of same element may not have same atomic mass. For example, some atoms of chlorine have atomic mass 35 amu while others have atomic mass 37 amu. Such atoms of same element having different atomic masses are called isotopes

Answer:

On the basis of new experimental facts, Dalton's atomic theory has been modified as: ... Atoms of same element may not have same atomic mass. For example, some atoms of chlorine have atomic mass 35 amu while others have atomic mass 37 amu. Such atoms of same element having different atomic masses are called isotopes.

Explanation:

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Answer:

10.60 grams of silane gas are formed.

Explanation:

From the reaction:

Mg₂Si(s) + 4H₂O(l) → 2Mg(OH)₂(aq) + SiH₄(g)          

We know that the limiting reactant is Mg₂Si, so to find the mass of SiH₄ formed we need to calculate the number of moles of Mg₂Si:

[tex]\eta_{Mg_{2}Si} = \frac{m_{Mg_{2}Si}}{M_{Mg_{2}Si}}[/tex]

Where:

m: is the mass of Mg₂Si = 25.0 g

M: is the molar mass of Mg₂Si = 76.69 g/mol

[tex]\eta_{Mg_{2}Si} = \frac{m_{Mg_{2}Si}}{M_{Mg_{2}Si}} = \frac{25.0 g}{76.69 g/mol} = 0.33 moles[/tex]

Now, the stoichiometric relation between Mg₂Si and SiH₄ is 1:1 so:

[tex] \eta_{Mg_{2}Si} = \eta_{SiH_{4}} = 0.33 moles [/tex]

Finally, the mass of SiH₄ is:

[tex] m_{SiH_{4}} = \eta_{SiH_{4}}*M_{SiH_{4}} = 0.33 moles*32.12 g/mol = 10.60 g [/tex]

Therefore, 10.60 grams of silane gas are formed.

I hope it helps you!    

Answer:

The offspring will all have red-colored flowers

Explanation:

A dominant character is one that is always expressed when it is present.

A recessive character or trait is one that is only expressed in the absence of the dominant character. Thus, when the dominant and recessive character are both present in an organism, the recessive character will be hidden while the dominant character will be expressed.

According to Menedel's laws of inheritance, in the cross between the dominant (RR) red-flowered plant and the recessive (rr) white-flowered plant, the genotype of the offspring will be as follows:

RR x rr = Rr, Rr, Rr,Rr

The offspring are all heterozygous for flower color. However, since red flower color is dominant over white flower color, all the offspring produced will have red-colored flowers.

Answer:

3.33 L

Explanation:

We can solve this problem by using the equation:

Where the subscript 1 refers to one solution and subscript 2 to the another solution, meaning that in this case:

We input the data:

Thus the answer is 3.33 liters.

Answer:

peanut butter

Explanation:

because you have 10 pieces of bread, 4 tbs of peanut butter, and 20 tbs of jelly, meaning you can make 5 sandwwitches with the bread, 4 sandwitches with the peanut butter, and 10 sandwitches with the jelly. so you dont have enough peanut butter to make all the sandwitches

According to the given scenario,  If one have 10 pieces of bread, 4 tablespoons of peanut butter, and 20 tablespoons of jelly, the limiting reactant will be peanut butter.

What is a limiting reactant?

The reactant that gets consumed first in a chemical reaction and result in limiting the formation of product is referred to as a limiting reactant.

According to the given scenario, the quantity of peanut butter will get consumed first so it will act as a limiting reactant.

Thus, If one have 10 pieces of bread, 4 tablespoons of peanut butter, and 20 tablespoons of jelly, the limiting reactant will be peanut butter.

For more details regarding limiting reactant, visit:

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Answer:

Synthesis reaction~~~~~~~

Explanation:

Answer:

B. Unbalanced force

Explanation:

Answer:

I think its unbalanced force

Explanation:

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Answer:

B.

Explanation:

The atomic model represents the position of the sub-atomic particles. Model A was proposed after Rutherford's scattering experiment where the positive particles were deflected in the middle. Thus, option A is correct.

Rutherford's atomic model proposed the presence of the positive nucleus in the middle of the atom while the electrons surrounded them in their orbitals with a negative charge.

He performed the scattering experiment where alpha particles emitted by the radioactive element were used to locate the positions of the electrons, neutrons, and protons.

According to the experiment, model A, best fits as the nucleus made of protons and neutrons takes the center of the atom with negative electrons surrounding them. The nucleus is small as compared to the entire atom.

Therefore, option A. model A best proposes Rutherford's model.

Learn more about Rutherford's model here:

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Answer:

Hrxn = -241.82 kJ

Explanation:

2H2(g) + O2(g) --> 2H2O(g) Hrxn = -483.64 kJ ............. (i)

The equation for formation of 1 mol of H2O is given as;

H2(g) + 1/2O2(g) --> H2O(g) ................. (ii)

Eqn (ii) is obtained by dividing eqn (i) by 2

That means the heat of reaction for eqn (ii) is given as;

Hrxn = -483.64 kJ / 2

Hrxn = -241.82 kJ

Answer:-241.82 kJ

Explanation:

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Answer:

3.77 moles of Fe contain 2.27 × 10, 24 as an exponent

Answer:

CO2

Explanation:

CO2 or carbon dioxide is produced when iron is extracted from its ore. Carbon monoxide Co is used as reducing agent in iron extraction. In this reaction iron ore is reduced to iron and CO is oxidized to CO2 or carbon dioxide which is released in the process. There extraction of iron is redox reaction.

Answer:

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Answer:

2Mg + O2 → 2MgO

Explanation:

Answer:

Argon can exist freely in nature because it has a full octet of electrons the way its found in the nature is the same way its found in periodic table of element in vast amouts of stabilization.

Answer:

así que busca, pero la respuesta está en por cierto Explanation:

The quantity of heat needed to convert 2.7 moles of ethanol at its boiling  point from liquid to vapor is 104.49 kJ

From the question,

We are to calculate the heat needed to convert 2.7 moles of ethanol from liquid to vapor.

Using the formula

Q = n × ΔHvap

Where Q is the quantity of heat

n is the number of moles

and ΔHvap is the enthalpy of vaporization

From the given information,

n = 2.7 moles

and

ΔHvap of ethanol = 38.7 kJ/mol

Putting the parameters into the formula, we get

Q = 2.7 × 38.7

Q = 104.49 kJ

Hence, the quantity of heat needed to convert 2.7 moles of ethanol at its boiling  point from liquid to vapor is 104.49 kJ

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Answer:

SO2, HCI and NH3

Explanation:

these three compounds vary inversely with the temperature

Answer:

The perimeter of a Rectangle P= 2(l + b)

Area of a Rectangle A = l × b

Answer: The equation represents a neutralization reaction is HNO3(aq) + KOH(aq) → KNO3(aq) + H2O(). The answer is letter C.

Answer:

The answer is C.

Explanation:

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Answer:

Initially Br is in -1 oxidation state and Cl in 0 oxidation state. Finally Cl is in -1 o.s. and Br in 0.

This means that Br has oxidised from -1 to 0 and Cl is reduced from 0 to -1.

KBr is reducting agent as it helps Cl to reduce.

Cl2 is oxidising agent as it helps Br to oxidise.

Explanation:

Answer:

a mixture

Explanation:

Two or more substances combined chemically, are called a compound

Answer:

Explanation:

Weathering occurs fastest in hot, wet climates. It occurs very slowly in hot and dry climates.

Answer:

Fe 2 O3 .

Explanation:

Answer:

the answer is 4

Explanation:

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