is 1 g of NaCl equal or not equal to avagadro's number
Answer:
Your answer ,it is not equal to it
7. What is the missing part of this fusion equation?
What is the missing part of this fusion equation?
2 1H+? → 3 2He + 1 0 n
Select the correct answer. Use the periodic table to help you.
1) 3 1 н
2)3 2 Не
3) 2 1 0n
4)2 1 H
Answer:
2 1 H
Explanation:
We must remember that a nuclear equation is only said to be balanced when the mass and charges on both sides of the nuclear reaction equation correspond.
If we look at the nuclear equation; the total mass on the right hand side is 4 units while the total charge on the right hand side is two units.
This implies that the missing particle must be 2 1 H
HELP ME PRETTY PLS PLS HELP ME FAST
Answer:
The producer is the grass, and energy flows from the mouse to both the snake and the owl.
Explanation:
The producer is usually defined as a "Producers, also known as autotrophs, make their own food.". Thus, the grass is the producer of the food web provided.
The energy also flows from the mouse to the snake and the owl, as the mouse has two arrows that lead away from it, leading both to the snake and the owl.
Hope this helps.
where is distillation used
Answer:
During separation of substances with different boiling points, fractional distillation is used.
During separation of substances in an eutectic mixture or azeotropic mixture, steam distillation is used.
A d orbital can
hold ____ electrons.
A. 2
B. 6
C. 10
D. 14
Answer:
10 electrons
Explanation:
Reptiles, amphibians, and fish are all cold-blooded animals. Their body temperatures are determined by their surroundings. How does a cold-blooded animal’s ability to digest food change in colder temperatures?
Si se sabe que el bronce se forma con 60% de cobre y 40% de estaño¿cual sera la masa de cobre contenida en 200 gramos de bronce
Answer:
Mass of copper in 200 g bronze is 120 g.
Explanation:
If it is known that bronze is formed with 60% copper and 40% tin, what will be the mass of copper contained in 200 grams of bronze?
Percentage of copper in bronze = 60 %
Percentage of tin in bronze = 40 %
Mass of bronze = 200 grams
Mass of copper in bronze = 60 % of 200 g
= 0.6 x 200 = 120 grams
Mass of copper in 200 g bronze is 120 g.
i need helpppppppp!!!!!
Answer:
Sorry I want to help but I dont know the answer
Why is NH3 polar but CH4 non polar
Answer:
Explanation:
Nitrogen has a lone pair of electrons. That would mean that NH3 is minus at the left end in this case.
H
:N H
H
Methane has its Hs 90 degrees (approximately apart.
H
H C H
H
The pulling forces on the methane cancel each other out. When that happens the chemical is non polar.
In a titration of hydrobromic acid (HBr) against sodium hydroxide (NaOH), 22.20 mL of 0.150 M NaOH is required to neutralize 36.60 mL of HBr. Calculate the molarity of the HBr. M1V1=M2V2
Answer:
[HBr] = 0.0910 M
Explanation:
NaOH → Strong base
HBr → Strong acid.
This is a titration that involves a strong acid and a strong base, so the recaction is about acid base equilibrium.
Formula for titration in the equivalence point is:
mmoles of acid = mmoles of base
M . Volume of acid = M . volume of base
We replace data:
M . 36.60 mL = 0.150 M . 22.20 mL
M = (0.150 M . 22.20 mL) / 36.60 mL
M = 0.0910 mol/L
Which object was closest to the color blue on the color spectrum?
Select one:
a.
Betelgeuse
b.
Sirius
c.
Spica
d.
Sun
Answer:
The division used by Isaac Newton, in his color wheel, was: red, orange, yellow, green, blue, indigo and violet; a mnemonic for this order is "Roy G. Biv". Less commonly, "VIBGYOR" is also used for the reverse order. In modern divisions of the spectrum, indigo is often omitted.
Explanation:
D
The object was closest to the color blue on the color spectrum will be sun.
What is spectrum?The distinctive wavelengths of given electromagnetic radiation that are released or absorbed by a material, atom, as well as molecule are known as a spectrum.
What is color?The perception of color is based on how the human vision reacts to light and how light interacts with objects.
Isaac Newton's color wheel was divided into the following groups: red, orange, yellow, green, blue, indigo, and violet. The acronym "Roy G. Biv" can be used to remember this arrangement. The reverse sequence can also be referred to as "VIBGYOR" less frequently. Indigo is frequently left out of contemporary spectrum divides.
To know more about the spectrum.
https://brainly.com/question/6836691
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What volume will 8.47 kg of sulfur dioxide gas occupy at a pressure of 89.4 kPa and a temperature
of 40.0 °C?
Answer:
let me know if it is right:)
and I hope it make sense
What is the balanced equation for the
equilibrium reaction where the aqueous
bicarbonate ion, HCO3(aq); decomposes to
form hydrogen ions, H,
(aq), and carbonate
ions, CO2 ?
Answer: A balanced equation for the equilibrium reaction where the aqueous bicarbonate ion, [tex]HCO^{-}_{3}(aq)[/tex]; decomposes to form hydrogen ions, [tex]H^{+}(aq)[/tex] and carbonate ions, [tex]CO^{2-}_{3}[/tex] is [tex]HCO^{-}_{3} \rightleftharpoons H^{+}(aq) + CO^{2-}_{3}[/tex].
Explanation:
A balanced chemical equation is defined as the equation which contains same number of atoms on both reactant and product side.
Hence, balanced equation for the equilibrium reaction where the aqueous bicarbonate ion, [tex]HCO^{-}_{3}(aq)[/tex]; decomposes to form hydrogen ions, [tex]H^{+}(aq)[/tex] and carbonate ions, [tex]CO^{2-}_{3}[/tex] is as follows.
[tex]HCO^{-}_{3} \rightleftharpoons H^{+}(aq) + CO^{2-}_{3}[/tex]
Here, number of atoms present on reactant side are as follows.
H = 1C = 1O = 3Number of atoms present on product side are as follows.
H = 1C = 1O = 3Since, there are same number of atoms present on both reactant and product side. Therefore, this equation is balanced.
Thus, we can conclude that balanced equation for the equilibrium reaction where the aqueous bicarbonate ion, [tex]HCO^{-}_{3}(aq)[/tex]; decomposes to form hydrogen ions, [tex]H^{+}(aq)[/tex] and carbonate ions, [tex]CO^{2-}_{3}[/tex] is [tex]HCO^{-}_{3} \rightleftharpoons H^{+}(aq) + CO^{2-}_{3}[/tex].
Sodium oxide decomposes to produce oxygen gas and sodium metal
Write and balance the following chemical equation
Answer:
2Na2O (s) → 4Na (s) + O2 (g)
Explanation:
According to this question sodium oxide, Na2O, decomposes to produce oxygen gas, O2, and sodium metal, Na. The following represents the chemical equation;
Na2O (s) → Na (s) + O2 (g)
However, the above chemical equation is not balanced as the number of atoms of each element on both sides are not equal e.g. there are 2 moles of Na on one side and 1 mole on the other.
To balance the equation, we make use of coefficients to ensure that the atoms of each element on the reactant side are the same as that on the product side. The balanced equation is as follows:
2Na2O (s) → 4Na (s) + O2 (g)
Which cell part is responsible for energy release?
A. nucleus
B. ribosome
C. mitochondrion
D. Golgi apparatus E. endoplasmic reticulum
Answer:
mitochondria is responsible for energy
Which represents the correst equilibrium constant expression for Cu(s) +2Ag<------> Cu^2 (aq) +2Ag(s)
Answer:
[tex]Kc=\frac{(Cu2)(Ag)^2}{(cu)(Ag)^2}[/tex]
Explanation:
because it is products / reactants
Hope this helps:)
Why do food scientists need to understand chemistry?
A.They study how to make plants produce certain chemicals
B.They use complicated machines to produce food products
C.They use chemicals as flavorings and preservatives
D.They study the effects of different foods on the body
Answer:
I think it is A
Explanation:
A.They study how to make plants produce certain chemicals
2. Give a "water-wise" alternative to each
activity below.
(a) hosing off a driveway to
clean it
(b) watering outdoor plants with a hose
(c) letting the tap run to get cold water
i’m feeling good today you’ll get 30 points for the questions
Answer:
1. sweep it instead
2.use a wateringcan with a percise nossole to water your plants efectivly 3.keep a jug of water in your frisge
Explanation:
What percentage of the total atomic mass of magnesium bromide (MgBr2) is composed of bromine? Hint - consider the mass of both atoms of bromine in your calculation. A.43% B.87% C.13% D.63%
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(1)
How many moles of iron can be made from 3 moles of Fe2O3?
ANSWER - 6 MOLES OF IRON
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(1)
One moles of Fe2O3 forming 2 moles of Fe
3 moles of Fe2O3 will form 2×3 = 6 moles of iron
The table below gives some characteristics of element Y
what is the identity of Y
Answer:
I doint understand that question resend it again
What mass of methanol (CH3OH) is produced when 140.1 g of carbon
monoxide reacts with 12.12 g of hydrogen?
CO(g) + 2H2(g) → CH2OH()
A. 160.2g
B. 96.12 g
C. 6.06 g
D. 192.2g
Answer:
B. 96.12 g
Explanation:
To solve this question we must convert each reactant to moles. Using the balanced equation we can find limiting reactant. With moles of limiting reactant we can find the moles of methanol and its mass:
Moles CO -Molar mass: 28.01g/mol-
140.1g CO * (1mol / 28.01g) = 5.0 moles CO
Moles H2 -Molar mass: 2.01g/mol-
12.12g * (1mol / 2.01g) = 6.03 moles H2
For a complete reaction of 5.0 moles of CO are required:
5.0moles CO * (2mol H2 / 1mol CO) = 10.0 moles of H2 are required
As there are just 6.03 moles, H2 is limiting reactant.
The moles of methanol produced are:
6.03 moles H2 * (1mol CH3OH / 2mol H2) = 3.015 moles CH2OH
Mass CH3OH -Molar mass32.04g/mol-:
3.015 moles CH2OH * (32.04g/mol) =
96.6g CH3OH ≈ B. 96.12 g
which environment would experience more humidity
A: Desert
B: Grassland
C: Mountain
D: Swamp
Answer:
Explanation:
You'r answer should be D
Banda se los agradeceria de corazon si me ayudarian con esta tarea :c
FORMULE LAS SIGUIENTES ECUACIONES QUÍMICAS INDIQUE: ELEMENTO QUE SE OXIDA, REDUCE AGENTE OXIDANTE Y AGENTE REDUCTOR.
a. Cinc + ácido clorhídrico produce cloruro de cinc + hidrógeno molecular
b. Sodio + ácido sulfúrico produce sulfato de sodio + hidrógeno molecular
c. Hidróxido de calcio + ácido carbónico produce carbonato de calcio + agua
Answer:
ver explicacion
Explanation:
Zn (s) + 2HCl (ac) ---> ZnCl2 (ac) + H2 (g)
El zinc se oxida y el hidrógeno se reduce. HCl es el agente oxidante mientras que Zn es el agente reductor.
2Na (s) + H2SO4 (ac) ----> Na2SO4 (ac) + H2 (g)
El Na se oxida y el hidrógeno se reduce. El ácido sulfúrico es el agente oxidante, mientras que el sodio metálico es el agente reductor de tge.
Ca (OH) 2 (ac) + H2CO3 (ac) ------> CaCO3 (s) + 2H2O (l)
Esta no es una reacción redox ya que no hay cambios en el número de oxidación de izquierda a derecha.
(reply if you know the answer or get reported) How many atoms are there in 5 grams of silicon?
Similarly, for one gram atomic weight of silicon with atomic weight of 28 grams, one mole of silicon still contains 6.022 × 1023 silicon atoms.Answer:
Explanation:
hope it helps
What kind of chemical bond exists between two nitrogen atoms to form nitrogen gas? Is this a strong or weak bond? When a chemical bond is formed, is energy absorbed or released?
Answer:
pure covalent bond ( inter atomic bond)
Explanation:
pure covalent exists between atoms of the same kind..two nitrogen atoms have the same electronegativity values hence cancel out making it a pure or non polar covalent bond
Is 22.99 mol of Na equal or not equal to Avogadro's number?
Answer:
It is not equal to Avogadro constant
Explanation:
This is because Avogadro constant refer to the number of molecules or atoms of particles per mile substance and thus is equal to 6.022×10^23 per mile or unit of that substance.
A sinkhole is a depression that forms in the ground as the surface layer slowly or quickly collapses. Rainwater is naturally a weak acid.
Most of the acid in the rainwater is carbonic acid which reacts with limestone and changes it into a new substance. The new substance
dissolves in the water which drains away. This leaves cracks and holes underneath the surface that can collapse. The formation of one
type of sinkhole is shown below.
topsoil
limestone
"hain
rain
pond
Rainwater dissolves some
limestones
and carries some
of the new solution away. This
forms cracks which results in
a small depression
The dissolving of the limestone
makes bigger cracks. The cracks
are fitted with topsoil and a pond
forms
3
Underneath a sinkhole, cracks can lead to other areas where the limestone has been dissolved. A much larger hole is formed by
the same processes of chemical weathering and erosion. What does this most likely form?
O A. a delta
B.
a lake
C.
a cave
D.
a coastline
Answer:
b
Explanation:
I'm guessing don't hold me to it
Answer: 3. C) a cave
Explanation:
A sinkhole is a hole in the ground caused by the decline of water levels and disturbance of the soil. If you'd like to imagine how it looks, search "sinkhole".
If a sinkhole occurs, more cracks form and the hole itself becomes larger, what do you expect would happen?
The formation could become a cave.
The answer is C. A cave.
Hope this helps!
Un gas a una temperatura de 38°C, tienen un volumen de 21 Lts Litros. ¿Qué volumen tendrá si la temperatura sube a 67°C?.
Answer:
. ¿Qué
Explanation:
Hope you have a great day
Se encuentra en los animales marinos, es un gas incloro de olor desagradable muy parecido al del pescado podrido
Answer:
Metilaminas
Explanation:
Las metilaminas a menudo están presentes en los tejidos corporales de organismos marinos como crustáceos, moluscos y en todos los peces marinos como N-óxido de trimetilamina, donde actúan para estabilizar la proteína que se desestabiliza por la presión y también se cree que actúa como un depresor del punto de congelación. en peces polares
Las metilaminas tienen olor a pescado podrido, basura o huevos podridos, de modo que una acumulación de metilamina en el cuerpo da como resultado la liberación de un olor a pescado en la amplitud, el sudor y la orina de un individuo
