How to do this question plz answer me
Answer: Ionic
Explanation: It is a type of chemical bond that generates two oppositely charged ions.
If he soundwave is producing sound with the steady pitch and is vibrating with a frequency of six waves per second then how many ways will be produced in four seconds
Answer:
n = 24 waves
Explanation:
As, the sound is produced with a steady pitch. Therefore, it means that there is no change in the pitch with respect to time. Hence, we can work with the following formula for frequency:
υ = n/t
where,
υ = frequency of sound wave = 6 waves/s
n = no. of waves = ?
t = time interval = 4 s
Therefore, using these values in the equation we get:
6 waves/s = n/4 s
n = (6 waves/s)(4 s)
n = 24 waves
which statement is true of the particles that make up a substance?
a. Particles in a liquid and particles in a solid have the same amount of energy
b. Particles in a solid have more energy than particles in a gas
c. Particles in a gas have more energy than particles in a liquid
d. Particles in a liquid have more energy than particles in a gas.
Answer: particle in gas have more energy than the particles in a liquid
Explanation: this is because the amount of energy is directly proportional to how random the system is. gaseous molecules are in a more constant random motion than the liquid molecules
The chemical equation represents a reaction between ammonia and oxygen to form nitrogen monoxide and water. 4 N H 3 ( g ) + 5 O 2 ( g ) → 4 NO ( g ) + 6 H 2 O ( g ) What is the limiting reagent when a 4.50 g sample of ammonia is mixed with 15.80 g of oxygen?
The limiting reagent : NH₃
Further explanationA method that can be used to find limiting reactants is to divide the number of moles of known substances by their respective coefficients, and small or exhausted reactants become a limiting reactant
Reaction
4NH₃(g)+5O₂(g)⇒4NO(g)+6H₂O(g)
mol NH₃ :
[tex]\tt \dfrac{4.5}{17}=0.265[/tex]
mol O₂ :
[tex]\tt \dfrac{15.8}{32}=0.494[/tex]
mol ratio
NH₃ :
[tex]\tt \dfrac{0.265}{4}=0.06625[/tex]
O₂ :
[tex]\tt \dfrac{0.494}{5}=0.0988[/tex]
Limiting reactants : NH₃ (smaller ratio)
The limiting reagent when a 4.50 g sample of ammonia is mixed with 15.80 g of oxygen is NH₃
Calculation of limiting reagent:The limiting reactant refers to the reactant that gets consumed first in a chemical reaction and thus it limits how much product can be created or developed. A method that can be used to determine limiting reactants that to divide the number of moles by their respective coefficients.
So,
For mol NH₃ :
[tex]= 4.5\div 17[/tex]
= 0.494
For mol O₂ :
[tex]= 15.8 \div 32[/tex]
= 0.494
For mol ratio
NH₃ :
[tex]= 0.265 \div 4[/tex]
= 0.06625
O₂ :
[tex]= 0.494 \div 5[/tex]
= 0.0988
Based on the above calculations we can say that it is NH₃
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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
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 of these are significant problems with bottled water?
Immense plastic use
Fossil fuel used to transport water
Water bottles can leach toxics into water
All of the above
Answer:
All the above
Explanation:
All the above
Compare the viscosity property of solid and liquid.
Answer
There is nothing like viscosity in solid because most of the solids usually have a rigid body. This is due to strong intermolecular forces. And it is due to this strong force between the molecules that they are unable to move and they remain fixed at their position. Some solids such as graphite which have layered structure, don't possess the property of viscosity, because of the strong force between the layers.
Explanation:
Viscosity is the property of a fluid that opposes the relative motion between two surfaces of the fluid that are moving at different velocities. In simple terms, viscosity means friction between the molecules of fluid.
FOR EXAMPLE
water is "thin", having a low viscosity, while vegetable oil is "thick" having a high viscosity
2. Mrs. Matthews went to Edisto beach with her husband and two children. She forgot the
sunscreen and the UV Index was extremely high at a level 10. Her whole family got very sunburnt.
Which energy transfer caused the sunburn?
(20 Points)
Radiation
Conduction
O Convection
Kinetic Energy
Answer:
A; radiation
Explanation:
also, please dont use brainly to copy and paste every answer to get them right, use it when u need help
Classify the triangle based on the side lengths 9, 40, and 41
Answer:
That's a right Triangle
Explanation:
algebra.com
Answer:
scalene triangle
Explanation:
Scalene triangles don't have any equal side lengths.
I GIVE BRAINLIEST TO WHO EVER GETS IT RIGHT!
which two scientist proposed an atomic model with a nucleus?
A.) Thomson
B.) Bohr
C.) Dalton
D.) Rutherford
Answer: B. Bohr and D. Rutherford
How many molecules are there in 8.25 moles of CaHia?
The number of molecules : 4.967 x 10²⁴
Further explanationA mole is a number of particles(atoms, molecules, ions) in a substance
This refers to the atomic total of the 12 gr C-12 which is equal to 6.02.10²³, so 1 mole = 6.02.10²³ particles
Can be formulated :
N = n x No
N = number of particles
n = mol
No = 6.02.10²³ = Avogadro's number
8.25 moles of C₈H₁₈
The number of molecules :
[tex]\tt 8.25\times 6.02\times 10^{23}=4.967\times 10^{24}[/tex]
How much energy would be needed to raise the temperature of a 5kg block of concrete by 10°C?
Answer:
5 x 10 x 3200 = 170 000J or 170kJ
Explanation:
i searched it lol
The energy needed to raise the temperature of a 5 kg block of concrete by 10° C is 170 000J or 170kJ.
What is energy?Energy is defined as a quantitative property that is transferred to a body or to a physical system. It can also be defined as capacity of doing work.
There are basically five forms of energy
Electrical energyChemical energyMechanical energyThermal energyNuclear energyHeat energy = mass x heat capacity x raise in temperature
= 5 x 3200 x 10
= 170000 J or 170 kJ
Thus, the energy needed to raise the temperature of a 5 kg block of concrete by 10° C is 170 000J or 170kJ.
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how would one convert 36 yd to centimeters?
Answer:
3291.84 cm
Explanation:
you would multiply the amount of yards you have by 91.44, since that's how many centimeters there are in 1 yd.
Answer: it’s D
Explanation:
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?
Answer:
calcium chloride oxide
Answer:
He did not multiply the chlorine and oxygen atoms by the coefficient 4
Explanation:
I just took the quiz
which atom or ion is the largest?
A. K
B. K^+
C. Ca
D. CA^2+
E. Li
Answer:
A
Explanation:
Which formula represents a tetrahedral molecule?
LiBr
CO2
H₂
SIF4
um this is kinda weird I am take a guest SIF4
The formula that represents a tetrahedral molecule is SiF₄. The correct option is the fourth option - SIF4
From the question,
We are to determine which of the given formulae represents a tetrahedral molecule
In order to determine the molecule that represents a tetrahedral molecule, we will determine which of the molecules has a tetrahedral molecular geometry.
A tetrahedral molecular geometry has a central atom located at the center with four substituents that located at the corners of a tetrahedron
Among the given options, the molecule that has four substituents is SiF₄. Si is the central atom and the F atoms are the substituents.
Hence, the formula that represents a tetrahedral molecule is SiF₄. The correct option is the fourth option - SIF4
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how is oxidation of copper seen on the statue of liberty similar to flammability and how is it different from flammability?
Answer:
Flammability and oxidation of copper are both chemical properties of a substance.Chemical properties are the properties that tells us how a substance can react with others.Flammability, oxidation of copper, rusting of iron, precipitation e.t.c are chemical properties of a substance.Flammability is one important chemical property of hydrocarbons.Oxidation reaction is peculiar to copper.
Explanation:
How do I do an energy profile diagram
Answer:
first u have to like draw like a number line uk how dey do in math but instead of num u add wht eva da question askin u
Explanation:
What will happen to a salt water fish if placed in freshwater?
Answer:
they will die because they need to be in salt water
Identify the number of electrons
Atomic mass: 24
Atomic number: 12
-2 charge
Answer:
24 is the answer of this question
asthenosphere
OA.
oceanic continental convergent boundary
B.
oceanic-oceanic convergent boundary
O c.
divergent boundary
D.
transform boundary
Awnser I know if ur right I’ll mark brainlesst
Answer:C
Explanation:The samples are composed of different proportions of copper and zinc
What does it mean when there is a physical change?
Question 1 options:
A new substance has been formed.
Matter has changed size, shape or form.
Matter has changed from one substance into another.
Matter has changed on the molecular level.
Answer:
The matter has changed size, shape, or form.
Explanation:
A new substance that is formed is creation.
if the matter changed from one substance to another this is called a chemical reaction.
Surely not. It won't change the molecular level.
Hope that helps.
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?
Answer:
The plant would be insect-resistant and improve its chances of success.
Explanation:
explain why particles of colloidal solution donot settle down when left undisturbed , while in the case of suspensions they do .?
Answer:
the partial of colloidal are smaller and they are not heavy whereas the partial of suspension are larger but they are heavy and less movement thus they settle down due to gravity
Consider the reaction.
Upper H subscript 2 upper o (g) plus upper C l subscript 2 upper O (g) double-headed arrow 2 upper H upper C l upper O (g).
At equilibrium, the concentrations of the different species are as follows.
[H2O] = 0.077 M
[Cl2O] = 0.077 M
[HClO] = 0.023 M
What is the equilibrium constant for the reaction at this temperature?
0.089
0.26
3.9
11
Answer:
The value of Equilibrium constant for the given reaction is 0.089
Explanation:
The given data shows the following reaction
H2O (g) + Cl2O (g) ⇄ 2 HClO (g)
The above reaction is in equilibrium.
Equilibrium constant K = [tex]\frac{[C]^c*[D]^d}{[A]^a*[B]^b}[/tex]
for the reaction
aA+bB ⇆ cC +dD
so
K = [tex]\frac{[HClO]^2}{[H2O][Cl2O]}[/tex]
= [tex]\frac{[0.023]^2}{[0.077][0.077]}[/tex] = 23*23/77*77 = 0.089
Therefore the value of Equilibrium constant for the given reaction is 0.089
Answer:
The value of Equilibrium constant for the given reaction is 0.089
The mixture in the large beaker still looked clear like water, but when the students, one at a time, carefully touched the outside of the large beaker, it felt warm to the touch.
Why did the large beaker most likely feel warm?
Answer:
A chemical reaction produced a new substance.
Explanation:
I just answered this on the study island quiz.
Answer:
A chemical reaction produced a new substance or "A"
Explanation:
3.04 Quiz: Chemical Reactions
Word bank please help fill.
Answer:
1. Chemical reactions
2.Substances
3. Properties
4. Precipitate
5. Light
6. Temperature
7. Color
8. Gas
Explanation:
During chemical reactions, new substances that possess new properties are formed. During the process of chemical reactions, evidences are found. Some of the evidences are formation of precipitate or light gel, production of gases and changes in colour and temperature.
Chemical reactions start with the substances or compounds which are known as reactants. The reactants react to form new substances known as the products which possess new properties.
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Carbon tetrachloride (CCl4) is
ionic
covalent
Answer:
Covalent
Explanation:
In the carbon tetrachloride molecule, four chlorine atoms are positioned symmetrically as corners in a tetrahedral configuration joined to a central carbon atom by single covalent bonds
Answer:
Carbon tetrachloride (CCl4) is ✔ covalent.
Answers to assignment question:
What properties would you expect for CCl4? Select all that apply.
It is likely a gas or liquid at room temperature.
It is likely soluble in water.
It will likely light up a bulb in a conductivity apparatus.
It will likely have a high melting point.
Calcium oxide (CaO) is ✔ ionic.
What properties would you expect for CaO? Select all that apply.
It is likely a gas or liquid at room temperature.
It is likely soluble in water.
It will likely light up a bulb in a conductivity apparatus.
It will likely have a high melting point.
Explanation:
all correct on edge! :D
when molecules move they react by cooling down.
True or False?
Answer:
false
Explanation:
when molecules move they heat up
Arrange the elements in order of increasing ionization energy. Use the
periodic table to identify their positions on the table.
Drag each tile to the correct box.
Hola
Tiles
chlorine
fluorine
gallium
phosphorus
Sequence
Answer:
Gallium, Phosphorus, Chlorine, Fluorine
Explanation:
Arrange the elements in order of increasing ionization energy. Use the periodic table to identify their positions on the table.
Drag each tile to the correct box.
Tiles
chlorinefluorinegalliumphosphorus
Sequence
Atoms of different element can not have same atomic number because only same type of atoms combine to form element. Atoms belonging to different element can have different atomic number. Therefore, the element arranged in order of increasing ionization energy are Gallium, Phosphorus, Chlorine, Fluorine.
What is element?Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same. Two or more than two atoms with different physical or chemical properties can not combine together to form an element.
For neutral atoms, ionization energy is positive, indicating that ionization is indeed an endothermic process. The higher the ionization energy of an atom, roughly speaking, the nearer the outer electrons are to nucleus. The element arranged in order of increasing ionization energy are Gallium, Phosphorus, Chlorine, Fluorine.
Therefore, the element arranged in order of increasing ionization energy are Gallium, Phosphorus, Chlorine, Fluorine.
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