Answers
The reaction equation is the chemical formula of reagents and product substances
A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.
Transformations :
1. CaO + H₂O⇒Ca(OH)₂
2. CaO + CO₂⇒CaCO₃
3. Ca(OH)₂+ 2HCl⇒CaCl₂+2H₂O
4. Ca(OH)₂+H₂CO₃⇒CaCO₃+2H₂O
5. CaCO₃⇒CaO+CO₂
Related Questions
What is Constituent Element?
Answers
Answer:
hope it helps...
Explanation:
a constituent element, material, etc.; component. a person who authorizes another to act in his or her behalf, as a voter in a district represented by an elected official. Grammar. an element considered as part of a construction. Compare immediate constituent, ultimate constituent.
If this helped please comment...
Consider the balanced equation below.
Upper P Upper C l Subscript 3 Baseline + Upper C l Subscript 2 Baseline right arrow Upper P Upper C l Subscript 5.
What is the mole ratio of PCl3 to PCl5?
Answers
Answer: The mole ratio of [tex]PCl_3[/tex] to [tex]PCl_5[/tex] is 1: 1
Explanation:
According to the balanced chemical equation ,the number of atoms of each element has to be same on reactant and product side. The stoichiometric coefficients of the species represent their number of moles.
[tex]PCl_3+Cl_2\rightarrow PCl_5[/tex]
Thus in the reactants, there is 1 mole of [tex]PCl_3[/tex] and 1 mole of [tex]Cl_2[/tex] molecule. And thus there is 1 mole of [tex]PCl_5[/tex] in the product as well.
Thus the mole ratio of [tex]PCl_3[/tex] to [tex]PCl_5[/tex] is 1: 1
If you want to warm 3.10 g of water from 56.4 C to 82.4 C, how many calories would you need to add to the water?
Answers
Answer: 80.6
Explanation:
q = mcAt
we have the grams of water, temp change, and specific heat of water is 4.186 J/g so we can plug in our numbers to find the heat energy in joules
q = (3.10)(4.184)(82.4-56.4)
q= 337.2304 J
we need our answer to be in calories so divide our answer by 4.184 and we get 80.6 calories
The amount of calorie required to warm 3.10 g of water from 56.4°C to 82.4°C is 80.6 calories.
HOW TO CALCULATE CALORIES:
The amount of calories can be calculated by using the formula as follows:Q = m × c × ∆T
Where:
Q = amount of heat in caloriesc = specific heat capacity (J/g°C)∆T = change in temperature (°C)m = mass (g)According to this question, c = 4.184J/g°C, m = 3.10g, ∆T = 82.4°C - 56.4°C = 26°CQ = 3.10 × 4.184 × 26Q = 337.23JSince 1J = 0.2390057361 calories337.23 J = 80.6calories.Therefore, amount of calorie required to warm 3.10 g of water from 56.4°C to 82.4°C is 80.6 calories.Learn more at: https://brainly.com/question/8097823?referrer=searchResults
Uranium - 235
Atomic #
Atomic mass
# of protons
# of neutrons
# of electrons
Answers
Answer:
# of protons
Explanation:
Which electron notation is incorrect?
1s 2s 2p 3s 3p 10
1s 2s 2p 3s 3p3
1s2 282 2p 3s 3p6
Answers
Un móvil se mueve con movimiento acelerado. En los segundo 2 y 3 los espacios recorridos son 90 y 120 m, Calcula la velocidad inicial y su aceleración
Answers
Answer:
La velocidad inicial es 55 [tex]\frac{m}{s}[/tex]y su aceleración es -10 [tex]\frac{m}{s^{2} }[/tex]
Explanation:
Un movimiento es rectilíneo uniformemente variado, cuando la trayectoria del móvil es una línea recta y su velocidad varia la misma cantidad en cada unidad de tiempo . Dicho de otra manera, este movimiento se caracteriza por una trayectoria que es una línea recta y la velocidad cambia su módulo de manera uniforme: aumenta o disminuye en la misma cantidad por cada unidad de tiempo. Y la aceleración es constante y no nula (diferente de cero).
En este caso la posición del objeto esta dada por la expresión:
[tex]x=x0+v0*t+\frac{1}{2} *a*t^{2}[/tex]
donde x es la posición del cuerpo en un instante dado, x0 la posición en el instante inicial, v0 la velocidad inicial y a la aceleración.
En este caso, por un lado podes considerar:
x= 90 mx0= 0 mv0= ?t= 2a= ?Reemplazando obtenes:
[tex]90=v0*2+\frac{1}{2} *a*2^{2}[/tex]
[tex]90=v0*2+\frac{1}{2} *a*4[/tex]
[tex]90=v0*2+2*a[/tex]
Y por otro lado tenes:
x= 120 mx0= 0v0= ?t= 3a= ?Reemplazando obtenes:
[tex]120=v0*3+\frac{1}{2} *a*3^{2}[/tex]
[tex]120=v0*3+\frac{1}{2} *a*9[/tex]
[tex]120=v0*3+\frac{9}{2} *a[/tex]
Por lo que tenes el siguiente sistema de ecuaciones:
[tex]\left \{ {{2*v0+2*a=90} \atop {3*v0+\frac{9}{2} *a=120}} \right.[/tex]
Resolviendo por el método de sustitución, que consiste en aislar en una ecuación una de las dos incógnitas para sustituirla en la otra ecuación, obtenes:
Despejando v0 de la primera ecuación:
[tex]v0= \frac{90-2*a}{2}[/tex]
Reemplazando en la segunda ecuación:
[tex]120=\frac{90-2*a}{2} *3+\frac{9}{2} *a[/tex]
Resolviendo:
[tex]120=(90-2*a)*\frac{3}{2} +\frac{9}{2} *a[/tex]
[tex]120=135-3*a +\frac{9}{2} *a[/tex]
[tex]120-135=-3*a +\frac{9}{2} *a[/tex]
[tex]-15=\frac{3}{2} *a[/tex]
[tex]\frac{-15}{\frac{3}{2} } =a[/tex]
-10=a
Reemplazando el valor de a en la expresión despejada anteriormente obtenes:
[tex]v0= \frac{90-2*(-10)}{2}[/tex]
Resolviendo:
[tex]v0= \frac{90+20}{2}[/tex]
[tex]v0= \frac{110}{2}[/tex]
v0=55
La velocidad inicial es 55 [tex]\frac{m}{s}[/tex]y su aceleración es -10 [tex]\frac{m}{s^{2} }[/tex]
Which term means finding ways to describe and explain the natural world
through observations and experiments?
A. Pseudoscience
B. Philosophy
C. Chemistry
D. Science
Answers
Answer:
D. Science i think
Explanation:
Match these solutions with their examples:
Liquid in liquid
Solid in liquid
gas in liquid
gas in gas
solid in solid
liquid in solid
Gas in solid
Examples
A. Air
B. seawater
C. marshmallow
Answers
Answer:
sea water
Explanation:
a sea water can match the following
Being farther from the nucleus and with more electrons shielding the protons results in the valence electrons being held ...
Answers
Answer:
electrons
Explanation:
since they are at the outer part of nucleus
Answer:
Weakly
Explanation:
Being farther from the nucleus and with more electrons shielding the protons results in the valence electrons being held weakly.
The effect of the nuclear pull will not be felt so strongly by the valence electrons. The valence electrons are the outermost electrons that occupies a shell. When the inner orbital electrons are much and the atomic radius is large, the valence electrons are well shielded. This results in electropositivity and a low ionization energy.HELP PLEASE ANSWER ASAP!!!!!
When atoms react, they often lose, gain, or share electrons to form a more stable version of themselves. For example, alkali metals such as sodium (Na) lose their outer shell electron in their reactions to form compounds. The electron configuration of alkali metals would then resemble those of which group of the periodic table in the compounds they form?
a. 7A or group 17
b. 8A or group 18
c. 2A or group 2
d. 1A or group 1
Answers
Answer:
D
Explanation:
A 5.0-mL sample of CO2 gas is enclosed in a gas-tight
syringe (Figure 11.3) at 22 °C. If the syringe is
immersed in an ice bath (0 °C), what is the new gas
volume, assuming that the pressure is held constant?
Answers
Answer:
3.5ML
Explanation:
At the constant pressure, the final volume of the carbon dioxide gas was equal to 4.62 ml at a temperature of 0ºC.
What is Charles's law for volume-temperature relation?Charles's law can be explained as when the pressure of the gas is kept constant, the volume of gas is directly proportional to the temperature of a gas.
The volume of the gas and the temperature of the gas have a direct relationship according to this law.
Therefore, V∝ T
or V₁/T₁ = V₂/T₂ ....................(1)
Given, the initial temperature of the CO₂ gas, T₁ = 22 ºC
T₁ = 22 + 273 = 295 K
The final temperature of the CO₂ gas, T₂ = 0ºC
T₂ = 0 + 273 = 273 K
The initial volume of the gas, V₁ = 5 ml
Substitute the value of V₁, T₁, and T₂ in equation (1 ) to get final volume of CO₂ gas:
5/295 = V₂/273
V₂ = 4.6 ml
Therefore, the final volume of the gas is equal to 4.6 ml at 0 ºC, when there is no change in the pressure.
Learn more about Charles's law, here:
brainly.com/question/16927784
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Populations in the deep-sea vent ecosystem can get energy storage molecules without sunlight. Do you agree or disagree with this claim? Explain your answer.
Answers
Answer:
Agree
Explanation:
The deep-sea vent ecosystem gets energy storage molecules without sunlight. Life in the vent ecosystem relies on alternate energy through the use of hydrogen sulfide present in the water emanating from the vent.
The producers that form the basis of the food chain are bacteria that use the hydrogen sulfide to create energy-rich molecule in a process known as chemosynthesis.
The equation of the chemosynthesis is as below:
[tex]CO_2 + 4H_2S + O_2 --> CH_20 + 4S + 3H_2O[/tex]
Scientists changed the genes of a tomato plant in order to produce a protein which is a natural pesticide. Why would this be classified as a positive mutation?
Answers
Answer:
The plant would be insect-resistant and improve its chances of success.
Explanation:
which of the metal is suitable to store lead nitrate solution
Answers
Explanation:
The nitrate anion is a univalent (-1 charge) polyatomic ion composed of a single nitrogen atom ionically bound to three oxygen atoms (Symbol: NO3) for a total formula weight of 62.05. Lead Nitrate is generally immediately available in most volumes.
Carl makes the table below to determine the number of atoms of each element in the chemical formula 4Ca(ClO3)2.
A table with 3 columns and 2 rows. The first column labeled element has entries calcium, chlorine, oxygen. The second column labeled calculation has entries 1 times 4 , 1 times 2, 3 times 2. The third column labeled total atoms has entries 4, 2, 6.
What mistake did Carl make?
Answers
Answer:
calcium chloride oxide
Answer:
He did not multiply the chlorine and oxygen atoms by the coefficient 4
Explanation:
I just took the quiz
What is happening in this picture?
Answers
Answer:
in first picture pressure is low and in second picture the pressure is high
2ans in first picture air is
less amount
in second picture air is high amount
A student is attempting to identify an unknown liquid. She places 10 mL of the liquid in a test tube and begins heating it over a burner. She checks and records the temp every minute until it begins to boil. What is the independent variable?
Answers
Answer:
The time of heating
Explanation:
Let us analyse the experiment closely; the temperature of the liquid increases as the time of heating increases. This implies that the temperature of the liquid is dependent on the time of heating of the liquid. The longer the time of heating, the greater the increase in temperature until the boiling temperature is eventually attained.
Hence, the temperature of the liquid is the dependent variable, the time of heating is the independent variable when the heating rate is held constant.
help
if you start with a substance as a solid what will happen to the molecules as you add thermal energy (heat)?
Answers
Answer: One change of state happens when you add energy to the substance. This change of state is called melting. By adding energy to the molecules in a solid the molecules begin to move quicker and can break away from the other molecules.
Explanation: I hoped that helped!
How many molecules of CO2 are contained in 4.40g of CO2
Answers
Answer:
6.02 x 10²²molecules
Explanation:
Given parameters:
Mass of CO₂ = 4.4g
Unknown:
Number of molecules in CO₂ = ?
Solution:
To find the number of molecules in the given mass, we have to find the number of moles in the compound first;
Number of moles = [tex]\frac{mass}{molar mass}[/tex]
Molar mass of CO₂ = 12 + 2(16) = 44g/mol
Insert the parameters and solve;
Number of moles = [tex]\frac{4.4g}{44g/mol}[/tex] = 0.1mol
1 mole of a substance contains 6.02 x 10²³molecules
0.1 mole of CO₂ will contain 0.1 x 6.02 x 10²³molecules
= 6.02 x 10²²molecules
Which container has gas stored at the highest temperature
Answers
Answer: 3
Explanation:
Answer:
kinetic energy
Explanation:
may be iam not sure
Carbon monoxide (CO) burns readily in oxygen (O2), forming
carbon Dioxide (CO2). Which of the follow equations is shows
this reaction and follows the law of conservation of mass?
Answers
Answer:
see attachment......
If 100 yards = 1 football field, what is the length, in meters, of 4.9
football fields?
Answers
——
1 yard = .9144 meters (according to Google)
100 yards= 91.44 meters
——
100*4.9= 490 yards
490 yards = 448.056 meters
* 4.9 Football fields= 448.056 meters *
I hope this helps! :)
Which chemical equation below is balanced to follow the Law of Conservation of Mass?
H2 + Cl2 + HCl
o 2 H2 + Cl2 + 3 HCI
2 H2 + 2Cl2 → 2 HCI
H2 + Cl2 → 2 HCI
Answers
Answer:
Balanced Equation
H₂ + Cl₂ → 2HCI
Answer:
Balanced Equation
H₂ + Cl₂ → 2HCI
Explanation:
i did it and 100%
Which of the following best defines a basic solution?
Answers
Which property do metalloids share with nonmetals?
Answers
Answer:
Both can react to form acidic compunds. Both are brittle.
Explanation:
The #2 discovery was:
a
heliocentrism
0
E=MCP
c
heredity
general relativity
d
Answers
Answer:
bug vfyjovcduvcu Harris's
In geotropism, give examples of a positive and a negative response in a seedling?
Answers
Answer:
I don't know that question answer because I am in 7 class so mind it
Answer:
Positive Geotropism means growth of the plants towards the Gravitational force. e.g.It means When a plant's root grows towards Gravitational force . It is positive geotropism. Negative Geotropism means growth of the plant against the Gravitational force. e.g. When a plant's steam grows towards sunlight.
Explanation:
Ice floats due to its?
Answers
Answer: it floats because it’s less dense than water
Explanation: since it’s less dense it floats
what is carbogen and it's uses
Answers
(10 POINTS PLS ANSWER IF U KNOW)
Is the coloring of the peppered moths an example of competition, differential reproductive success, or inherited variation? Explain why.
Answers
Answer:
Competition
Explanation:
Peppered moths get their color in lieu to become the fittest among all so that they can survive easily. During industrial age, when pollution suddenly became high these moths changed their color through evolution in order to save themselves from their predators.
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