Answer:
52.5 g
Explanation:
Density= mass/volume
Rearranging the equation gives us m= d(V)
m= d(V)
m= (10.5 grams/cm^3)(5 cm^3)
m= 52.5 g
How many grams of molecular chlorine will be required to completely react with 0.0223 moles of sodium iodide according to the following reaction?
2Nal + Cl2 ---> 2NaCl + I2
A. 1.57 104 grams
B. 3.16 grams
C. 0.0112 grams
D. 0.791 grams
The amount of chlorine will be 0.791 gram required to completely react with 0.0223 moles of sodium iodide .
The given chemical reaction is :
2Nal + [tex]Cl_{2}[/tex] → 2NaCl + [tex]I_{2}[/tex]
It is given that:
Amount of sodium iodide = 0.0223 mol.
Atomic mass of chlorine = 35.45 g.
The amount of chlorine can be calculated as:
0.0223mol. NaI × (1mol. Cl₂/2mol. NaI) × (35.45g/1mol. Cl2)
=0.791 grams
Therefore, the correct answer will be option (D).
To know more about sodium chloride.
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How many atoms can be found in 6.7 moles of Bromine (Br)
Question 7 options:
4.03 x 10^24
9.13 x 10^-24
8.99 x 10^22
3.31 x 10^24
Answer:
The first one is correct, 4.03 x 10^24.
Which change in pH represents a hundredfold increase in the concentration of hydronium ions
in a solution?
(1) pH 1 to 2
(2) pH 1 to 3
(3) pH 2 to 1
(4) pH 3 to 1
Answer:(4) pH 3 to 1
Explanation:
im 95% sure its the right answer
hi help plz .........
Answer:The answer is C) The total mass of C and D only.
In an ecosystem, which of the fcHlowing is NOT a trait of living organisms?
Contains DNA
Can reproduce
Made of cells with membrane
Responds to stimuli
Answer:
responds to a stimuli or made of cells with membrane
Explanation
What group on the periodic table has the fewest valance electrons
Answer:
Alkali metals
Explanation:
The lowest number of valence electrons is found in the alkali metals (group 1), which have only one valence electron per atom.
Answer:
Alkali metals:) im 100% sure because i just got done learning everything in the periodic table:)
Explanation:
What is the most likely oxidation state of nitrogen?
O A. -2
OB. +3
O C. +4
O D.-3
D is the answer -3 m
True or False. Physical changes result in the formation of a new substance.
True or False. A major clue to a chemical change is the formation of a new
substance.
Answer:
1. false
2. true
Explanation:
I hope this helps
What does the poitof incidence mean?
Answer:
Point of incidence: The point on the surface where the incident ray strikes the surface is called the point of incidence. Reflected ray: The ray of light that bounces back from the surface of an object is called a reflected ray of light.
Explanation:
Search
If 2.50 grams of ethane is allowed to react with 5.00 grams of oxygen how many grams of water would be expected?
Answer:
The mass of water produced is 4.29 g.
Explanation:
Given;
reacting mass of ethane, C₂H₆ = 2.5 g
reacting mass of oxygen, O₂ = 5.0 g
The balanced combustion reaction is given as follows;
2C₂H₆ + 7O₂ ----------------> 4CO₂ + 6H₂O
Based on the balanced equation above;
requires
7.0 moles of oxygen -----------------------> 2.0 moles of ethane
requires
5.0 g of oxygen --------------------------> x gram of ethane
x = (2 x 5) / 7
x = 1.43 g
Ethane is in excess of 1.07g (2.5 g - 1.43g)
Now, determine the mass of water produced by 1.43 g of ethane;
requires
2.0 moles of ethane -----------------------> 6.0 moles of water
requires
1.43 g of ethane --------------------------> y gram of water
y = (6 x 1.43) / 2
y = 4.29 g
Therefore, the mass of water produced is 4.29 g.
Kevin is working on a model that shows the positions of Earth, the Moon, and the Sun during the phases of the Moon. How should he position them to show a New Moon?
If the moon is full on January 16, on approximately what date will it be full in February?
A. February 10
B. February 22
C. February 1
D. February 12
Answer:
February 12th.
Explanation:
Trust me.
HELPP ILL GUVE YOU LOTS OF POINTS EVERYTHING U WANT I REALLY NEED HELP
Answer:
finally found
31th July 2000
Sound Wave, Ripple in water, Guitar String, TV Signal, Which one does not belong? Why?
Answer:
The TV signal.
Explanation: Hope this is right! :)
Areas in Mexico and Central America are known as
Which statement is true? a. Energy is capability of doing work b. A cup of water has kinetic energy c. Kinetic energy is stored energy in substances. d. Potential energy is enery in motion. e. Heat and electricity are different forms of energy
Answer:
Option A an E.
Explanation:
Energy can be described as the capability to do work. It is what has to be transferred to an object in order to get this object to do work. Energy can be in various forms such as heat energy, kinetic, potential, electrical, chemical, nuclear etc.
It takes energy to do quite a number of things, from cooking food to driving and also in engaging in exercises.
Which rate law is consistent with the mechanism?
Match the terms to their definition.
1 .
Male gonads
conception
2 .
a body chemical that controls growth and activity
eggs
3 .
The fertilization of a female egg cell with a male sperm cell
fertilization
4 .
The union of the male gamete (sperm cell) and the female gamete (egg cell)
gonad
5 .
gamete-producing organ in animals
hormone
6 .
Female reproductive cells
ovary, ovaries
7 .
The male reproductive cell
sperm
8 .
Female gonads
testes, testicles
Answer:
2
Explanation:
Answer:
1. Sperm - The male reproductive cell
2. Fertilization - The union of the male gamete (sperm cell) and the female gamete (egg cell)
3. Conception - The fertilization of a female egg cell with a male sperm cell
4. Testes, Testicles - Male gonads
5. Ovary, Ovaries - Female gonads
6. Gonad - Gamete-producing organ in animals
7. Eggs - Female reproductive cells
8. Hormone - a body chemical that controls growth and activity
Explanation:
Hope this helped!
Chemistry Challenge
Imagine someone who had never seen a city before.
They have lived their entire life alone, in a cave.
Answer
How could you get them to understand a city without
taking them there?
.
Students, write your response!
Pear Deck Interactive Slide
Do not remove this bar
Answer:
I will draw how the city looks like
Which of the following is not an example for electroplating? A Tin cans for storing food
B Chromium used on bath taps to get shiny appearance
C Copper used for making electrical wires
D To protect iron objects used in machineries, from corrosion
If you answer you will get brainiest
Please answer and thank
Answer:
C. Copper used for making electrical wires
Explanation:
When a coating of a particular metal is applied on another metal, the process is termed as electroplating. The process is carried by the process of electro-deposition. This process is carried on in order to enhance the quality of the objects manufactured. The coating helps in resistance and provides an attractive appearance to the object.
Option C. is not an example of electrocoating because on the copper wires no other metal coating is done. In all the other three options, coating has been done on the object.
Describe how greater distance affects the appearance of an object’s size and brightness
Answer:
Distance also affects the apparent brightness of an object. A distant, but very energetic star can appear dimmer to us than a lower-energy, but closer one. ... Each of their effective temperatures results in a different brightness for the object. The quasar, however, is very far away, and so appears dim.
Explanation:
HELLP PLEASE
_ Na+Cl 2 -> _NaCl
reactant side number of atoms?
Na = ?
Cl = ?
Product side number of atoms?
Na = ?
Cl = ?
what is the final equation?
_ Na+Cl 2 -> _NaCl
Answer:
2Na+Cl2 -> 2NaCl
Explanation:
1Na+1Cl 2 -> 1NaCl (i'm assuming they want you to balance it so ill start with 1)
Na = 1
Cl = 2 (it is 2 because it is Cl2, meaning that there are 2; but remember that you cannot change this number only coefficients)
Na = 1
Cl = 1
We need to have 2 Cl on the product side
1Na+1Cl 2 -> 2NaCl
Now we need 2 Na on the reactants side
The final equation is
2Na+Cl2 -> 2NaCl
Now it is balanced
Na = 2
Cl = 2
--
Na = 2
Cl = 2
how do i get my skin perfect without expensive products? I'm asking bc my face and neck have been massively breaking out with pimples and sweat bumbs. i can go out in public its so bad plsss help
Answer:
if you are a teen then its pretty normal as during the age of adolescent sweat gland become active and pimples take place on you face , no need to worry at this your face will become beautiful again .
but if you are above 25 then it is a time to worry , you should consult a doctor or you can use alovera jel or any other home remedies. :)
What is the name of this nuclear process ?
Answer:
Fission
Explanation:
menciona tres ejemplos en los que un cálculo incorrecto en los en ingredientes indispensables para la elaboración de un producto traería consecuencias graves químicamente hablando
Explanation:
Cada producto o servicio, independientemente de su propósito, debe ser seguro de usar y desarrollado de acuerdo con los más altos estándares de calidad y seguridad.
Algunos ejemplos de cálculo incorrecto de ingredientes que tendrían graves consecuencias químicas podrían ser:
Medicamentos y vacunas: Este es quizás uno de los ejemplos que tendría las consecuencias más graves para las personas si hubiera un cálculo incorrecto de ingredientes, ya que la producción de medicamentos y vacunas es una industria que requiere la máxima calidad agregada debido a que se ocupa directamente de la salud y los errores de formulación pueden agravar la enfermedad y causar la muerte. Actualmente tenemos el ejemplo de la vacuna para el control de la pandemia, que antes de ser aprobada tuvo que someterse a una serie de investigaciones, pruebas en humanos y diferentes fases para demostrar su efectividad y no causar daño al organismo humano.
Cosméticos: Existen cosméticos de la industria de la belleza que tienen la función de prevenir el envejecimiento cutáneo, alisar el cabello, etc. Por tanto, un cálculo incorrecto de los ingredientes químicos también podría provocar daños irreversibles a la salud, como quemaduras en la piel, caída del cabello, alergias, cáncer, etc.
Alimentos: La industria alimentaria utiliza componentes químicos con el fin de conservar los productos y aumentar la vida útil, por lo que si se usan en cantidades mayores de las necesarias, dichos compuestos pueden causar enfermedades en las personas como intoxicación alimentaria, cáncer, gastritis, etc.
a car motor running as a car travels down the road.
Kinetic Energy
Potential Energy
Answer:
kinetic energy
Explanation:
force is used
The mass of the Atom is determined mainly by the
a) mass of the neutrons
b) mass of the neutrons and protons
c) mass of the electrons
d) mass of the electrons and neutrons
Answer:
B.mass of the neutrons and protons
Explanation:
hope it's help..
Identify any incorrect formulas. Explain your answer.
a. Mg2(SO4)3
b. Rb3As
c. BeCl3
d. NaF
Wish I could award more points but I'm running low.
The formula of a compound is written based on the valency of each bonded atoms. The formulas Mg₂(SO₄)₃, Rb₃As are incorrect. Such compounds does not exist.
What is chemical formula?The formula of a chemical compound is written based on the number of atoms participated in bonding. Magnesium is second group element having two valence electrons.
Magnesium thus donates its two electrons into the bonding atom or group. The sulphate group SO₄ have a valency of 2 it gains two electrons from Mg when bonded.
Thus the formula of magnesium sulphate being MgSO₄ and not Mg₂(SO₄)₃. Similarly Rb is a second group metal having two valence electrons. Its valency being two. As is a halogen with valency one. Thus they cannot form a compound like Rb₃As.
Hence, option a and b are incorrect formulas.
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is the maximum population that a given area can support.
Carrying capacity
Population growth
Limiting factor
Immigration rate
The carrying capacity is the maximum number of individuals of a species that an environment can support. Population size decreases above carrying capacity due to a range of factors depending on the species concerned, but can include insufficient space, food supply, or sunlight.
What do acids do in solution?