Answer:
The reactants for rust are iron ,water and oxygen while the products are hydrated iron oxide
Explanation:
4Fe+3O2+2H2O---->2Fe2O3.H2O
1.37 gram of cupric oxide on reduction with hydrogen gas gives 1.098gram of copper and in next experiment 1.17 gram of copper produce 1.476gram of copper oxide illustrate this satisfy law of definite proportion
Answer: This satisfies the law of definite proportion or constant proportion and it can be proven below.
Explanation:
The law of constant or definite proportion states that all pure samples of the same compound no matter how they are made; are made up of the same elements combined in the same proportion by mass. The can be verified by finding the ratio of copper to oxygen in the both experiment listed above.
In the first experiment:
1.37 g of cupric oxide contains 1.098 g copper therefore oxygen = 1.37 − 1.098
=0.272 g
The ratio of copper to oxygen is=
1.098 ÷ 0.272
= 4:1
In the SECOND or next experiment:
1.476 g of cupric oxide contains 1.17 g copper Therefore oxygen = 1.476−1.17
=0.306g
The ratio of copper to oxygen is =
=1.176 ÷ 0.306
=3.8:1
Which is approximately≃4:1.
In conclusion, despite the different methods of the experiments, composition of copper of copper in the two different samples are the same and the cupric oxide obtained from different sources contain the same elements ( copper and oxygen) combined in the SAME ratio.
Cuál es tejidos conforman el sistema de tejido fundamental
Explanation:
Los tejidos que conforman el tejido fundamental son los siguientes:
-Parénquima
-Colénquima
-Esclerénquima.
El tejido fundamental constituye la parte principal del cuerpo de la planta porque intervienen en funciones tan importantes para el desarrollo y sostenimiento de la planta como el proceso de la fotosíntesis, el almacenamiento de agua y de nutrientes .
El tipo de enlace en los compuestos: NaF , SO2 e I2 ,son respectivamente de acuerdo a sus electronegatividades que son las siguientes: Na = 0.9 F= 4.0 S= 2.6 I =2.7 F=4.0
Respuesta:
NaF: Enlace iónico
SO₂: Enlace covalente polar
I₂: Enlace covalente apolar
Explicación:
El tipo de enlace entre 2 elementos depende de la diferencia de electronegatividad.
Si ΔEN = 0, el enlace es covalente apolar.Si 0 < ΔEN ≤ 1.7 , el enlace es covalente polar.Si ΔEN > 1.7 , el enlace es covalente iónico.NaF
ΔEN = |EN(Na)-EN(F)| = |0.9-4.0| = 3.1
El enlace es iónico.
SO₂
ΔEN = |EN(S)-EN(O)| = |2.6-3.5| = 0.9
El enlace es covalente polar.
I₂
ΔEN = |EN(I)-EN(I)| = |2.7-2.7| = 0
El enlace es covalente apolar.
Between reaction of magnesium powder and lead oxide which is oxidized in the reaction and which is oxidizing agent
Answer:
Mg is oxidized and Pb is the oxidizing agent
Explanation:
Which particles have about the same mass?
O A. Neutrons and protons
O B. Electrons and protons
O C. Electrons and neutrons
O D. Electrons, neutrons, and protons
SUBMI
Answer:
A
Explanation:
Electrons are significantly smaller than neutrons and protons.
Electrons have a diameter of less than 10^-16 centimeters, whereas protons and neutrons have a radius of about 10^-13 centimeters.
PLZ HELL ME WITH MY WORK
Answer:
Ba
Explanation:
can anyone help me in my chemistry homework?
Answer:
what is in your chemistry home work I can try for...
Answer:
1: A substance made by mixing other substances together.
2: Solutions, Suspensions, Colloids and Emulsion.
3: A particular kind of matter with uniform properties.
4: A homogenous mixture is that mixture in which the components mix with each other and its composition is uniform throughout the solution. A heterogenous mixture is that mixture in which the composition is not uniform throughout and different components are observed.
5: A solution is a homogeneous mixture of two or more components in which the particle size is smaller than 1 nm. Common examples of solutions are the sugar in water and salt in water solutions, soda water, etc. In a solution, all the components appear as a single phase.
6: A solution forms when one substance dissolves in another. The substance that dissolves is called the solute. The substance that dissolves it is called the solvent. For example, polar solvents dissolve polar solutes, and nonpolar solvents dissolve nonpolar solutes.
7: Common examples of suspension include the mixture of chalk and water, muddy water, the mixture of flour and water, a mixture of dust particles and air, fog, milk of magnesia, etc. Q2. Give the definition of suspension. Ans: A suspension is a heterogeneous mixture of two or more substances.
8: The Tyndall effect is light scattering by particles in a colloid or in a very fine suspension.
Explanation:
Plz Help I have One more time To retake and I can't fail it..
Answer:
A
Explanation:
I think the answer would be A
In the following acid-base reaction,
Cl- is the
HCI(g) + H2O(l) →H30+(aq) + Cl(aq)
acid
base
conjugate
base
Answer:
conjugate base
Explanation:
The following equation is given in this question:
HCI(g) + H2O(l) → H30+(aq) + Cl-(aq)
In accordance to Brønsted–Lowry acid–base theory, an acid is a substance that loses an hydrogen ion (H+) or proton in an aqueous solution. This theory further indicated that the substance formed after an acid loses its hydrogen ion is called a CONJUGATE BASE.
In the above equation, HCl is the acid because it loses H+ while the substance formed after the loss of H+, which is Cl- is a conjugate base.
. Why a chlorine atom with an atomic number of 17 will be negatively charged when its valance shell gains an electron.
Explanation:
When chlorine bonds and becomes stable, (had a full outer electron shell), because we know that chlorine has 7 electrons in it’s outer shell, it requires 1 to gain noble gas structure. So, when if bonds with an element and then becomes stable, the gaining of an electron means it becomes a negatively charged ion. (an ion being a charged particle.)
what is hard water and soft water
Answer:
Hard water is water that has high mineral content, Soft water is free from dissolved salts of such metals as calcium, iron, or magnesium
Explanation:
1. Necesitas un "cubo concentrado" (de esos que se usan para sazonar las comidas Maggie, ricostilla) dos vasos de vidrio o plástico y agua (caliente y fría). 2.Agrega al vaso con agua fria la mitad de un cubo concentrado y déjala reposar unos minutos. Prepara el segundo vaso con agua caliente y agrégale la otra mitad del cubo. 3. Argumenta tus observaciones en relación con lo observado y con la teoria vista. ¿Como influye la temperatura en este experimento?
How many joules are required to convert 16.5 g g of ice at 0.0 ∘C ∘ C to liquid water at 32.0 ∘C ∘ C ? The heat of fusion of water is 334 J J /g g .
Answer:
5511 J
Explanation:
Applying,
Q = Cm.................... Equation 1
Where Q = amount of heat required to convert ice, C = Heat of fusion of water, m = mass of ice
From the question,
Given: C = 334 J/g, m = 16.5 g
Substitute these values into equation 2
Q = 334(16.5)
Q = 5511 J
Hence, the amount of heat required is 5511 J
Element 'X' forms a chloride with the formula XCl2, which is a solid with high melting point. X would most likely be in the same group of the periodic table as:
I) Si
2) Al
3) Mg
4) Na
pls pls answer fast
Answer:
Mg
Explanation:
Mg forms 2+ ions and mgcl2 has a melting point over 700°C I believe.
plz answer (d) explain
Cu2+ is reduced to Cu.
Change in oxidation state is from +2 to 0
what mass of aluminium is produced from 100g of aluminium oxide?
Answer:
This answer is 108g mass of aluminum is produced from 100g of aluminum oxide
is c10H8 a conductor
Answer:
No
Explanation:
Napthalene cannot conduct electricity
sodium carbonate decahydrate crystals were left exposed on a watch glass for two days
(a)name the property of salts investigated in the above experiment?
I think sublimation because sublimation is the process by which substances change back to gases immediately
the setup below was used to investigate the reaction between metals and water
i.)identify solid X and state its purpose
ii.)write a chemical equation for the reaction that produces the flame
Answer:
I hope it helps you
Explanation:
make me brainlest
Solid X is glass wool and is used to generate the flow of steam .Chemical equation for reaction between metal and water is metal hydroxide and hydrogen gas.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.
Learn more about chemical equation,here:
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where do you write salt and suger why
Answer:
here: "salt and sugar"
Explanation:
I dunno, looks pretty, gives 5 points. even tough any context is missing
but seriously:
salt and sugar look the same. just someone with a split personality
i) Interpret the chemical equation in terms of quantitative aspect.
C3H8(g) + 5O2(g)->3CO2(g) + 4H2O(1/ce)
ii) Then, interpret it in terms of qualitative aspect.
Answer:
Quantitative aspect: one mole of propane reacts with five moles of oxygen ( combustion ) to produce three moles of carbon dioxide and four moles of water.
Qualitative aspect: A colourless gas ( propane ) burns with a blue flame ( combination ) to form a colourless gas that turns lime water milky and drops of colourless liquid that turn anhydrous copper (ii) oxide from blue to white.
The chemical equation in quantitative aspect can be interpreted as 1 mole of propane reacts with 5 moles of oxygen to give 3 moles of carbon dioxide and 4 moles of water and in qualitative aspect a colorless gas is released which burns with blue flame.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.
Learn more about chemical equation,here:
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Nồng độ mol của 200ml dung dịch Nacl chứa 0,5 mol chất tan là :
Answer:
Explanation:
2,5M
Answer:
2,5m
Explanation:
c=n:v
How many Calcium (CA) atoms are in carbon tetrachloride
Answer:
5
Explanation:
Carbon tetrachloride has molecular formula as CCl4 , so from this it is evident that there are 4 atoms of Chlorine & 1 atom of carbon is present, in total 5 molecules are present in carbon tetra
Answer:
its 5
Explanation:
What volume of 0.200 M Na2CO3 (Mm = 106 g/mol) solution contains 53.0 g of Na2CO3?
Question 1 options:
0.200 L of solution
0.400 L of solution
0.500 L of solution
1.60 L of solution
2.50 L of solution
Answer:
volume in Liter = 2.50 L
Explanation:
Given:
Na2CO3 = 0.2 M
Molar mass of Na2CO3 = 106 g/mol
Mass of Na2CO3 solution = 53 gram
Find:
Volume of Na2CO3
Computation:
Number of mol of Na2CO3 = (53 g) / (1.06 x 10² g/mol)
Number of mol of Na2CO3 = 0.5 mol
M = Number of mol / volume in Liter
0.2 = 0.5/ volume in Liter
volume in Liter = 0.5 / 0.2
volume in Liter = 2.50 L
The concentration of hydronium ions is greater than 1 × 10–7 for acidic solutions. True False
The concentration of hydronium ions (H₃O⁺) is generally greater than 1 × 10⁻⁷ for all acidic solutions: True.
What is an acidic solution?An acidic solution can be defined as a type of aqeous solution that has a high concentration of hydrogen ions (H⁺), which is typically greater than that of pure water.
As a result of the fact that an acidic solution has a power of hydrogen ions (pH) below 7, the concentration of hydronium ions (H₃O⁺) derived from the protonation of water would be greater than 1 × 10⁻⁷ for all acidic solutions.
In conclusion, we can deduce that a property of all acidic solution is a concentration of hydronium ions (H₃O⁺) that is greater than 1 × 10⁻⁷.
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Jack was camping. He put a can of baked beans on his campfire, without opening the lid. The can exploded. What happened?
Answer:
Too much steam expands within the can, causing it to explode
Explanation:
Beans contain water, and when water is heated, steam is created. As the steam increases, there's less and less room for it to go. The built up pressure causes the can to explode.
name the carboxylic acid used to make this compound:
Answer:
propanoic acid is used because of the number of carbon atoms before the functional group
What is an ideal gas?
O A. A substance whose molecules do not take up space or interact
with one another
O B. A substance that can exist in either the gaseous state or the liquid
state
C. A substance that simultaneously has properties of a liquid, gas,
and solid
D. A substance that expands to fill a container, creating pressure and
heat
Answer:
A substance whose molecules do not take up space or interact with one another
A substance whose molecules do not take up space or interact with one another, hence option A is correct.
What are molecules?Molecules are defined as the lowest fundamental unit of a chemical molecule that can participate in a chemical reaction is a group of bound atoms. The smallest identifiable unit into which a pure substance may be divided while retaining its composition and chemical properties is a molecule, which is a collection of two or more atoms.
A theoretical gas known as an ideal gas is made up of several randomly moving point particles with no interparticle interactions. Because it abides by the ideal gas law, a condensed equation of state, and is amenable to statistical mechanics analysis, the ideal gas concept is helpful. The relationship between pressure and volume in an ideal gas is described by the Ideal Gas Law.
Thus, a substance whose molecules do not take up space or interact with one another, hence option A is correct.
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Cavendish’s name for hydrogen gas was "inflammable air." The word inflammable means "to burn." (Note that in is not a prefix in this word.) Why did Cavendish use this name?
Answer:
The gas formed in the experiment could catch fire easily. So, he named the gas inflammable air.
This was the answer straight from Plato. I hope that this helped you, please mark me the brainiest, like and rate my answer if it did! :)
Explanation:
This was the answer straight from Plato. I hope that this helped you, please mark me the brainiest, like and rate my answer if it did! :)
Answer:
The gas formed in the experiment could catch fire easily. So, he named the gas inflammable air.
Explanation: your welcome
A roller coaster approaches a hill,
traveling at 40 m/s. The roller
coaster has a mass of 800 kg.
When it reaches the top of the hill,
it has exactly zero velocity. What
is the height of the hill?
Answer:
the height of the hill is 30 feet tall
