Answers
Answer:
B is a decomposition reaction
The chemical equation which represents decomposition reaction is 2 NaCl[tex]\rightarrow[/tex] 2 Na + Cl₂.
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.
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Related Questions
A radioactive substance has a half life of 2.5 days. How much of 25.0 z is left after 10 days?
Answers
1.563 g
Further explanationGiven
A half life of 2.5 days ⇒ t1/2 = 2.5 days
initial sample ⇒ 25 g
duration of decay ⇒ 10 days
Required
sample left after 10 days
Analysis
Use decay Formula :
[tex]\tt Nt=No.\dfrac{1}{2}^{T/t1/2}[/tex]
Solution
[tex]\tt Nt=25.\dfrac{1}{2}^{10/2.5}\\\\Nt=25.\dfrac{1}{2}^4\\\\Nt=\boxed{\bold{1.563~g}}[/tex]
Paraphrase
Substance left after 10 days = 1.563 g
What Group would this element be in?
Answers
We’ll I think sorry if wrong .......
Which is an example of potential energy?
Question 7 options:
A fox chasing a mouse
A bowling ball rolling towards the pins
A car sitting at the top of a hill
A kite flying in the air
Answers
A car sitting at the top of a hill
Why does an ionic bond transfer electrons instead of sharing?
Answers
When the electronegativity difference between the two atoms is greater than 2.0, the bond is considered ionic; i.e. there is complete transfer (between the two atoms) of the electrons in the bond. The electronegativity (according to Pauling scale) of chlorine is 3.0, while the electronegativity of sodium is 0.9.
So, electrons are transferred because of a larger electronegativity difference.
When there is a whole transfer of valence electron between the atoms is called an ionic bond. In this type of bond construction, the atoms get contrarily charged.
The ionic bonds are formed due to electronegativity. According to Pauling, the capability of an atom to draw electrons towards itself is called electronegativity.
When there is a huge contrast in electronegativity between the atoms, the electrons are completely transferred between the atoms.
The atom that relinquishes an electron are called a cation and is positive whereas the atom that acquires an electron are called anions and are negatively charged.
Therefore, due to electronegativity, ionic bonds are formed.
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Which element cannot participate in hydrogen bonding?
Answers
Carbon dioxide
Explanation:
because when hydrogen mixes with oxygen carbon dioxide is canceled out
Which is larger potassium or bromine
Answers
Answer:
potassium.
Explanation:
located at start of period 3, will have larger radius
Answer:
bromine
Explanation:
QUESTION 10
Which of the following is not a characteristic of ionic compounds?
A. Contains metals and non metals
B. Ions form a crystal structure
C. Conducts electricity in the solid state
D. High melting point
Answers
Answer: C. Conducts electricity in the solid state
Explanation:
Which word doesn't belong?
period, group, family, eighteen
Answers
Answer:
eighteen
Explanation:
Pls someone help ASAP
Answers
Answer:
i answed it in before
Explanation:
If the statement is true, select True. If it is false, select False.
In a physical change, some of the physical properties of the substance may be altered and the chemical composition remains the same.
True
False
Answers
Answer:
True
Explanation:
Yes this statement is true.
In a physical change, some of the physical properties of the substance may be altered and the chemical composition remains the same.
0.190 moles cesium chloride converted to grams
Answers
Answer:
31.9881055
Explanation:
0.190*168.35=31.9881055
What is the density of laughing gas (N2O) at STP?
Help please
Answers
Answer:
1.977 g/L
Nitrous oxide
Names
Molar mass 44.013 g/mol
Appearance colourless gas
Density 1.977 g/L (gas)
Melting point −90.86 °C (−131.55 °F; 182.29 K)
BCECASE
Why is oxygen spelt o2
Answers
Answer:
it's a diatomic molecule–which is why it is O₂.
Explanation:
Diatomic molecules are molecules composed of only two atoms, of the same or different chemical elements. Only a handful of elements on the periodic table are diatomic such as nitrogen, hydrogen, fluorine, chlorine, bromine, and iodine.
Mass = 35g
Density = 5 g/cm3
∙What is the Volume?
Answers
Answer:
7cm3
.........
A photon has a wavelength of 299 nm. What is the frequency of this photon?
1. 1×10^16 Hz
2. 1×10^15 Hz
3. 6.65 × 10^−37 Hz
4. 6.65 × 10^−28 Hz
5. 0.00100 Hz
6. 1.98 × 10^−31 Hz
7. 8.97 × 10^10 Hz
8. 1×10^6 Hz
9. 6.65 × 10^−18 Hz
Answers
The frequency(f) of this photon : 1 x 10¹⁵ Hz
Further explanationRadiation energy is absorbed by photons
The energy in one photon can be formulated as
[tex]\large{\boxed{\bold{E\:=\:h\:.\:f}}}[/tex]
Where
h = Planck's constant (6,626.10⁻³⁴ Js)
f = Frequency of electromagnetic waves
f = c / λ
c = speed of light
= 3.10⁸
λ = wavelength
A photon has a wavelength of 299 nm.
λ = 299 nm = 299 x 10⁻⁹ m = 2.99 x 10⁻⁷ m
The frequency :
[tex]\tt f=\dfrac{3.10^8}{2.99\times 10^{-7}}\\\\f=\boxed{\bold{1\times 10^{15}~Hz}}[/tex]
2 The polar structure of water allows it to act as a solvent for many substances. Which of the
following statements best explains why water is considered polar?
F The unequal sharing of electrons results in the water molecule having a slightly negative
charge near its oxygen atoms and a slightly positive charge near its hydrogen atom.
G The equal sharing of electrons by the hydrogen and oxygen atoms form weak bonds that are
easily broken during dissociation.
H The unequal sharing of electrons results in the water molecule having a slightly positive
charge near its oxygen atoms and a slightly negative charge near its hydrogen atom.
The equal sharing of electrons by the hydrogen and oxygen atoms create a molecule that is
neutrally charged.
Answers
Whoever answers the question first and right will get brainly
Answers
Answer:
to question two When plant roots grow downwards, it is an example of positive geotropism, because they are growing towards the stimulus, the soil. However, when plant shoots grow upwards, it is an example of negative geotropism as they grow away from the stimulus, the soil.Feb 21, 2018
Explanation:
How much electronic waste does Orlando produce ?
Answers
Answer:
20 to 50 million
Explanation:
MgO + HBr → MgBr2 + H2O
Answers
Answer:
MgO + 2HBr → MgBr2 + H2O
Explanation:
What is the condensation point and freezing point of neon in KELVIN.
Answers
Answer:
-415.5°F (-248.6°C)
Explanation:
Answer: The melting point/condensation point of neon is 24.53888889. Of course, I'm sure you can round that. The freezing point would be 521.74. All of this is in Kelvin
In what eon did single-celled organisms appear?
Answers
Part A Read each sentence. Write the letter of the correct answer on the line.
1. Which of the following would result in a chemical change?
A boiling water
C tearing paper
B burning wood
D melting wax
Answers
Isomers are molecules with the same molecular formula, but different structural formulae.
How many isomers are there in C7H16?
A.6
B.7
C.8
D.9
Answers
Answer:
D 9 is the answer
Explanation:
Hope it helps you
Please mark as brainliest answerHow can you increase the momentum of an object?
(a) by decreasing its velocity
(b) by increasing its friction
(c) by increasing its mass
(d) by decreasing its acceleration
Answers
Answer:
(c) by increasing it's mass
Answer:
(C) by increasing its mass
Explanation: Mass and velocity are both directly proportional to the momentum. If you increase either mass or velocity, the momentum of the object increases proportionally. If you double the mass or velocity you double the momentum.
Which formula represents an ionic bond? 1 NaCl 2 N2O 3 HCl 4 H2O
Answers
Answer:
1 NaCl
Explanation:
NaCl is sodium chloride, and sodium chloride is an ionic compound because it's held together with ionic bonds.If you have 23mg of water, at what temperature will it Boil?
Answers
Answer:
i believe it is in the 200
Explanation:
Contrast the three types of intermolecular forces.
Answers
Answer: The three major types of intermolecular interactions are dipole–dipole interactions, London dispersion forces (these two are often referred to collectively as van der Waals forces), and hydrogen bonds.
Hope this helps............ Stay safe and have a Merry Christmas!!!!!!! :D
Similarities between sliding and fluid friction
Answers
What constitutes a solar system?
Answers
Our solar system consists of our star, the Sun, and everything bound to it by gravity — the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune, dwarf planets such as Pluto, dozens of moons and millions of asteroids, comets and meteoroids.
Goodluck my friend!!
Consider the compound Al(OH)3. What type of solid does it form?
Answers
Answer: crystal lattice
Explanation:
Answer:
A and the next question is c
Explanation:
Edge 2020