Answer:
CH4 ---> 2
CL2 ----> 4
HCL -----> 8
CO-------> 2
Explanation:
Equation
CH4 + O2 + Cl2 => HCI + CO
we have to balance it
On LHS atoms of oxygen is 2 while on RHS it is 1 atom so lets balance oxygen first
to balance oxygen on RHS we add 2 as coefficient to CO
CH4 + O2 + Cl2 => HCI + 2CO
___________________________________________________
On RHS atoms of Carbon is 2 while on RHS it is 1 atom so lets balance Carbon now
to balance Carbon on LHS we add 2 as coefficient to CH4
2CH4 + O2 + Cl2 => HCI + 2CO
___________________________________
On LHS atoms of hydrogen is 8 so lets balance hydrogen now
to balance hydrogen on RHS we add 8 as coefficient to HCL
2CH4 + O2 + Cl2 => 8HCI + 2CO
______________________________________________
On RHS atoms of Cl is 8 while on LHS atoms of Cl is 2.
To make no of atoms of Cl 8 on LHS we add 4 as coefficient
2CH4 + O2 + 4Cl2 => 8HCI + 2CO
Thus, coefficients are as given below
CH4 ---> 2
CL2 ----> 4
HCL -----> 8
CO-------> 2
21. Which type of reaction is shown below?
BaCl2(aq) + K2CO3(aq) → BaCO3(s) + 2 KCl(aq)
A)Decomposition
B)Double replacement
C)Single replacement
D)Combustion
To solve such this we must know the concept of double displacement reaction. The correct option is option B that is double displacement reaction.
What is chemical reaction?Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.
In double displacement reaction the two compounds react with each other. The cations of each compound exchange their places with ne another. Ba²⁺ of BaCl[tex]_2[/tex] is displacing K⁺ ion from the compound K[tex]_2[/tex]CO[tex]_3[/tex].
Therefore the correct option is option B that is double displacement reaction.
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The temperature of a sample of liquid water changes from 50°C to 30°C. Which statemen
happen at the molecular level?
The molecules move more quickly and their average kinetic energy increases
The molecules move more slowly and their average kinetic energy decreases.
The molecules move more quickly and their average kinetic energy decreases
The molecules move more slowly and their average kinetic energy increases
Answer:
The molecules move more quickly and their average kinetic energy decreases
Which of the following would have the best thermal conductor properties?
A. A thick mug
B. A plastic cup
Ос. A paper cup
D. A cup made of metal
Answer:
D
Explanation:
metal is a major cunductor of heat
A cup made of metal would have the best thermal conductor properties.
The answer is option D.
Is a metal cup a good conductor of heat?Metals have unfastened electrons that are not bounded to the atoms. those electrons are unfastened to move around within the metal, colliding with the metal atoms and shifting heat to them successfully. This makes metals higher conductors of warmth than maximum other materials.
Which of the following would have a high-quality thermal conductor?Diamond is the leading thermally conductive material and has conductivity values measured 5x better than copper, the maximum synthetic metallic inside the united states of America. Diamond atoms are composed of a simple carbon spine this is a really perfect molecular structure for an effective heat switch.
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Describe the behavior of electrons in single, double, and triple bonds. Compare and contrast their properties, listing an example of each.
Answer:
A single bond contains two electrons between two atoms. Each bond following also contains two electrons, so a triple bond has six electrons shared in the bonding.
Explanation:
Some properties are...all foods made from meat, poultry, seafood, beans and peas, eggs, processed soy products, nuts, and seeds are considered part of the Protein Foods Group. Beans and peas are also part of the Vegetable Group. For more information on beans and peas, see Beans and Peas Are Unique Foods.
A student touches a freshly baked cake that was taken out of the oven. Which best explains why the cake feels hot? Options: Molecules in the skin are moving faster than molecules in the cake. Molecules in the cake are moving faster than molecules in the skin. The kinetic energy of molecules in the cake is more than the energy in the baking tray. The kinetic energy of molecules in the baking tray is more than the energy in the cake.
Answer:
Molecules in the cake are moving faster than molecules in the skin.
Explanation:
When a cake is baked, the energy is absorbed. This is known as an endothermic reaction. When things are hot, it means that the molecules are in motion. When the cake is taken out from the oven, the molecules are continuously moving and absorbing energy. When the student touches the cake, the heat is flown into the student's body. This happens because of the difference in the temperature between the two.
B. Molecules in the cake are moving faster than molecules in the skin.
Consider the reaction below.
Answer:
B.
Explanation:
Oxidation - losing electrons. It is Zn, and it is losing 2 electrons.
[tex]Zn^{0} --> Zn^{2+} +2e^{-}[/tex]
Initial temperature of metal =
С
Initial temperature of water =
°C
Final temperature of both =
Answer:
52.0 °C
Explanation:
Once an action plan is in place, it should not be changed.
Please select the best answer from the choices provided.
ОТ
OF
Answer:
F = False
Explanation:
An action plan is a plan that an individual or a firm creates, that contains their objectives, aims, strategies , which they require to achieve their specific goals.
An action plan is very detailed, streamlined and straight to the point. It contains a series or a number of steps or tasks that an individual must embark on in other to achieve their end goal.
WHEN AN ACTION PLAN AS BEEN PUT IN PLACE OR SET IN MOTION, IT CAN BE CHANGED OR ALTERED. This is because the aim of a action plan is to achieve the end goal of an individual or a firm. As long as the changes made in the action plan does not hinder the achievement of those goals then the action plan can be changed.
Some of the very common reasons why action plans are changed or modified includes:
a) To make the action plan more flexible.
b) To track and monitor your progress in achieving your end goal. If there is a delay, you can easily track it out on your action plan and modify it.
In other to create an action plan, it is very important that the goals of such that individual or firm is very well defined and clear from the beginning. Action plans must always be monitored, and updated regularly.
Answer:
F, false
Explanation:
i took the quiz on edge
Atoms are very small. Approximately how many atoms would it take to
make a stack as thick as a potato chip?
A. Thousands
B. Hundreds
C. Billions
D. Millions
Reset Selection
Answer:
Billions
Explanation:
A full stop contains almost trillion of atoms.
Billions of atoms would it take to make a stack as thick as a potato chip. Hence, option C is correct.
What are atoms?An atom consists of a central nucleus that is usually surrounded by one or more electrons.
Billions of atoms would it take to make a stack as thick as a potato chip. Hence, option C is correct.
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Find the final concentration of NO3- in a solution made by combining 0.954 L of 0.140 M Al(NO3)3 with 0.652 L of 0.430M LiNO3. A) 0.026 M B) 0.052 M C) 0.160 M D) 0.320 M E) 0.639 M
Answer:
C
By using the equation V1M1=V2M2
41. Which pair of compounds could combine to produce an ester?
I. CH3- CH2 - CH2 - CH3
II. CH3- CH2 - CH2-CH2-OH
III. CH3- CH2 - CH2-COOH
IV. CH3- CH2- CH2- COH
a. I and II
b. II and III
c. II and IV
d. III and IV
Answer: b. ii and iii
Explanation:
The ester, Butyl Butanoate is formed when Butanol reacts with Butanoic acid
as seen below;
CH3-CH2-CH2-CH2-OH + CH3-CH2-CH2-COOH ---->
Butanol Butanoic acid
CH3-CH2-CH2-COOCH2-CH2-CH2-CH3 + H2O
Butyl Butanoate Water
Which of the following is a combustion reaction?
O A. CO2 + H2O + H2CO3
O B. CzHg + 502 → 3002 + 4H20
O C. MgSO4 + Ba → BaSO4 + Mg
D. NaOH + HCl → NaCl + H2O
29. Which of the following substances are soluble in water? Select all that apply.
A)Nacl
B)AgNO3
C)Agel
D)KNO
Answer:
A, B, and D
Explanation:
I'm not too sure about D, but both Nacl and AgNO3 are both definitely soluable in water
The substances that are soluble in water are NaCl, AgNO3, and KNO. The correct option are A, B, and D.
What is solubility?The maximum amount of a substance that will dissolve in a given amount of solvent at a given temperature is defined as solubility.
Solubility is a property of a specific solute-solvent combination, and the solubilities of different substances vary greatly.
The amount of an oil that will dissolve in the water column at a given temperature and pressure is referred to as its solubility in water. The more polar the compound, the more water soluble it is.
Based on the concentration at which they dissolve in a solvent, solutes are classified as highly soluble, sparingly soluble, or insoluble.
One of the critical parameters of solubility is achieving the desired drug concentration in systemic circulation for the desired (anticipated) pharmacological response.
Thus, A, B, and D are the correct options.
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PLEASEEEE HEELLPPPPPP!!!! Electrolysis uses electrical current to break water molecules into oxygen gas and hydrogen gas. How do you know that this is a chemical change? A)Chemical bonds in the water molecule are broken. B)There is a phase change from liquid to gas. C)Electrical current always causes a chemical change. D) It is a single replacement reaction.
Answer:
The answer is A) Chemical bonds in the water molecule are broken.
Explanation:
A physical change is defined as a change in which there is alteration in shape, size etc. No new substance gets formed in these reactions.
A chemical change is defined as a change in which a change in chemical composition takes place. A new substance is formed in these reactions.
As we know, water is made of hydrogen and oxygen. Thus, if an electric current is applied, it breaks the compound down to its individual elements. This is a chemical change.
I hope I helped, please correct me if I'm wrong!
ASAP need answer
When is a scientific theory formed?
Answer:when a hypothesis is given a repeated exposure to experimentation and is not falsified it increases the confidence of biologist's on that hypothesis such hypothesis form the basis of formulating further hypothesis which are then experimentally proved.The hypothesis that stand the test of time often tested and never rejected are called theory.A theory can be denied by further observations.
Which statement is accurate about mass or weight?
Answer:
Mass is a scaler quantity while weight is a vector quantity
Explanation:
Hope it helps
Answer:
mass helps it
Explanation:
they can't change the mass only it can
Most gases ______________ .
A.are dense
B.Have a definite volume
C.Have a definite shape
D.are compressible
A solar panel converts
energy to
energy
A. potential, electrical
B. electrical, light
O C. light, electrical
OD. chemical, kinetic
Reset Selection
Answer: C. light, electrical
Explanation:
The solar panel contains photovoltaic cells that absorb sunlight, which it then converts to DC electricity. From DC electricity, it is converted to AC electricity, which is used in our homes to power our appliances.
Which of these objects has the largest volume? A) a cube of metal with a volume of 10 cm3 B) a spherical balloon with a volume of 0.05 m3 C) a sample of water with a volume of 1,000 mm3
B. a spherical balloon with a volume of 0.05 m^3
Answer:
B.)
Explanation:
Isotopes of the same element have different _____. numbers of neutrons numbers of protons numbers of electrons atomic numbers
Answer:
number of neutrons
Explanation:
Answer:
neutrons
Explanation:
i just took the test
Mixtures and Solutions
A solution is made by dissolving
9.68 g of potassium chloride
(KCI) in 565 g of water.
What is the molality of the solution?
[?] m KCI
Molarm
Answer:
[ 0.23 ] m KCl
Explanation:
Take a look at the attachment below,
565 grams = 565.1000
=0.565 kg (H20)
molar mass (Potassium Chloride),
mass of Potassium + Mass of Chloride,
39.0983 + 35.453
=74 5513 g 1 mol
Given - 968 grams (Potassium chloride)
{ (9.68 g KCI) }
(74.5513 g KCI mol)
0.565 kg H2O
( 0.23 mol / kg ) - about ,
solution =0.23 in KCI
[0.23] m KCI
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