Answer:
A. Single replacement - AB + C -> CB + A
B. Decomposition - AB -> A + B
C. Double replacement - AB + CD -> AD + CB
D. synthesise - A + B -> AB
The type of chemical reaction to the general form of reaction is Single replacement - AB + C = CB + A.
What are chemical reactions?Chemical reactions are defined as a procedure where one or more compounds, known as reactants, are changed into one or more new substances, known as products. Reactants are the substance in a chemical equation to the left of the arrow. Products are the substance to the right of the arrow.
For decomposition reaction the simple reaction is AB = A + B. For double replacement reaction the simple reaction is AB + CD = AD + CB and for synthesis reaction the simple reaction is A + B = AB. The reaction which is shown in its simplest forms are known as simple reaction.
Thus, the type of chemical reaction to the general form of reaction is Single replacement - AB + C = CB + A.
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Water (H 2 O) is made of
Answer:
To find out what water is made of, it helps to look at its chemical formula, which is H2O. This basically tells us that the water molecule is composed of two elements: hydrogen and oxygen or, more precisely, two hydrogen atoms (H2) and one oxygen atom (O). Hydrogen and oxygen are gases at room temperature.
Explanation:
Hope it is helpful.....
Answer:hidrogeno
Explanation:etsa se orfmapor un prceso quimico entre elhirogendo
PLEASE HURRY IM TIMED Which of the following are examples of physical changes? (Select all that apply.)
tearing a piece of paper
a nail rusting
crushing a soda can
Answer:
Explanation:
tearing a piece of paper
crushing a soda can
Determine the number of protons, neutrons, and electrons:
Answer:
Hey Mia! This is what I put for my answer.
Explanation:
I hope this helps and have a good day :)
A rock climbing group reached the top of Mount Everest in the Himalayan mountains. Mount Everest is about 29,000 feet above sea level and formed by the interaction of two tectonic plates. The group leader was surprised to find fossilized marine organisms on top of the mountain. Which of the following describes the geologic history of Mount Everest?
answer choices:
A: Two tectonic plates had different densities which caused the denser plate containing fossilized marine organisms to rise above the surface and form the Himalayan mountains.
B: Two tectonic plates had different densities which caused one plate to subduct into the ocean and the other one to rise causing marine organisms to fossilize on top of Mount Everest.
C: Two tectonic plates had the same density which caused one plate to subduct into a transform boundary that fossilized marine organisms before the Himalayan mountains were formed and uplifted.
D: Two tectonic plates had the same density and a collision of the plates pushed the advancing plate that contained fossilized marine organisms upward forming the Himalayan mountains and Mount Everest.
Answer:
Two tectonic plates had the same density and a collision of the plates pushed the advancing plate that contained fossilized marine organisms upward forming the Himalayan mountains and Mount Everest.
In an ecosystem comprising of the Himalayan region,following describes the geologic history of Mount Everest that two tectonic plates had the same density and a collision of the plates pushed the advancing plate that contained fossilized marine organisms upward forming the Himalayan mountains and Mount Everest.
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the ecosystem through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
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Please HELP!!! Automotive airbags inflate when sodium azide decomposes explosively to its constituent elements. How many grams of sodium azide are required to produce 24.4 L of nitrogen gas at standard temperature and pressure? 2NaN3 --> 2Na + 3N2
47.2 g of sodium azide
106.2 g of sodium azide
1.63 g of sodium azide
0.726 g of sodium azide
Answer: 47.2 g of sodium azide
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
To calculate the moles, we use the equation:
[tex]\text{Number of moles of nitrogen}=\frac{\text{Given volume}}{\text {Molar volume}}=\frac{24.4L}{22.4L}=1.09moles[/tex]
The balanced chemical reaction is:
[tex]2NaN_3\rightarrow 2Na+3N_2[/tex]
According to stoichiometry :
3 moles of [tex]N_2[/tex] are produced by = 2 moles of [tex]NaN_3[/tex]
Thus 1.09 moles of [tex]N_2[/tex] are produced by =[tex]\frac{2}{3}\times 1.09=0.73moles[/tex] of [tex]NaN_3[/tex]
Mass of [tex]NaN_3=moles\times {\text {Molar mass}}=0.73moles\times 65g/mol=47.2g[/tex]
Thus 47.2 g of sodium azide are required to produce 24.4 L of nitrogen gas at standard temperature and pressure
Use the following equation:
2 CO (g) + O2 (g) = 2 CO2 (g)
How many moles of CO and O2 are required to produce 10 moles of CO2?
A) 10 moles of CO and 5 moles O2
B) 5 moles of CO and 10 moles of O2
C) 2 moles of CO and 1 mole O2
D) 2 moles of CO and 2 moles CO2
Answer:
A) 10 moles of CO and 5 moles O2
What are the characteristics of a gas?
A. no definite shape but a definite volume
B. a definite shape but no definite volume
C. a definite volume and definite shape
D. no definite shape or definite volume
Answer:
D. no definite shape or. definite volume
Explanation:
Gases do not have a definite shape or volume because the molecules in gases are very loosely packed, they have large intermolecular spaces and hence they move around. The particles of solid are closely packed and occupy less space while particles of gases are loosely packed and occupy the complete space available.
The number of moles in 75.0 liters of F2 at STP
Which one of the following is a balanced equation?
Sugar
O2
CO2
H2O
What is the name of this energy pathway?
thnxx for free point? ?????????
Where and how does respiration take place
Answer:
Glucose and oxygen react together in cells to produce carbon dioxide and water and releases energy. The reaction is called aerobic respiration because oxygen from the air is needed for it to work. Energy is released in the reaction. The mitochondria , found in the cell cytoplasm, are where most respiration happens.
A spider has several eyes.
What is the main function of these organs?
I’ll give y’all 100 points
Answer:
it is d
Explanation:
Answer: d
Explanation: i think that answer
What are three forms of the element carbon?
Answer:
There are at least eight forms of carbon: amorphous, graphite, diamond, fullerenes, aggregated diamond nanorods, carbon nanofoam, glassy carbon, and linear acetylenic carbon.
Explanation:
So let’s say that u just ate some hot chips and then u ate chicken and macaroni
Answer: oml
Explanation: thats gross
i'd eat the pic below then that
is this right someone please help asap photo attached above
An eccentric chemistry professor (not mentioning any names) stops in every day and orders 250ml of Sumatran coffee at precisely 60.0°C. You then need to add enough milk at 3.00°C to drop the temperature of the coffee, initially at 80.0°C, to the ordered temperature.
Calculate the amount of milk (in ml) you must add to reach this temperature. Show all your work in the provided spaces.
In order to simplify the calculations, you will start by assuming that milk and coffee have the specific heat and density as if water. In the following parts, you will remove these simplifications. Solve now this problem assuming the density is 1.000 g/ml for milk and coffee and their specific heat capacity is 4.184 J/(g ºC).
Answer:
sorry im not intelligent personCalculate acetic acid needed to make a 35 mM solution in 1 L.
Note: 35 mM = 0.035 M = 0.035 mol/L.
1. Calculate how many moles you need for 1L.
2. Calculate how many grams of acetic acid that is.
3. Use the density of the glacial acetic acid, 1.05 g/mL, to calculate how many mL you
will need to use. Show your instructor or TA this calculation in your notebook to make
sure you have the correct answer before going forward.
Answer:
1. 0.035 mole
2. 2.1 g
3. 2 mL
Explanation:
From the question given above, the following data were obtained:
Molarity of acetic acid = 0.035 mol/L.
1. Determination of the number of mole of acetic acid needed.
Molarity of acetic acid = 0.035 mol/L.
Volume of solution = 1 L
Mole of acetic acid =?
Molarity = mole /Volume
0.035 = mole / 1
Mole of acetic acid = 0.035 mole
2. Determination of the mass of acetic acid, CH₃COOH.
Mole of CH₃COOH = 0.035 mole
Molar mass of CH₃COOH = 12 + (3×1) + 12 + 16 + 16 + 1
= 12 + 3 + 12 + 16 + 16 + 1
= 60 g/mol
Mass of CH₃COOH =?
Mole = mass / Molar mass
0.035 = Mass of CH₃COOH / 60
Cross multiply
Mass of CH₃COOH = 0.035 × 60
Mass of CH₃COOH = 2.1 g
3. Determination of the volume.
Mass = 2.1 g
Density = 1.05 g/mL
Volume =?
Density = mass / volume
1.05 = 2.1 / volume
Cross multiply
1.05 × volume = 2.1
Divide both side by 1.05
Volume = 2.1 / 1.05
Volume = 2 mL
Can a chemical reaction be both exothermic and endothermic? Explain.
Explanation:
reaction cannot be both endothermic and exothermic at the same time.
you have a sample of 23.8 g of C2H6. how many moles of C2H6 are in the sample?
Be sure to show your work and each step is writing out clearly.
Answer:
0.791 moles are present in the sample
Explanation:
To convert mass to moles of a substance you must find the molar mass of the susbtance.
The molar mass of C₂H₆ is:
2C = 12.01g/mol*2 = 24.02g/mol
6H = 1.01g/mol*6 = 6.06g/mol
Molar mass = 24.02g/mol + 6.06g/mol = 30.08g/mol is the molar mass of C₂H₆
And the moles of 23.8g of this substance are:
23.8g * (1mol / 30.08g) =
0.791 moles are present in the sampleWhich of the following is NOT true about wastewater and wastewater treatment?
please provide full questions
name two objects which are hard to touch
Answer:
Name of two hard objects is Brick and Wood.
fire and mercury
i think i am not sure
but pls brainlist
3. Lily is studying the core of Earth. Which sphere is she examining?
biosphere
atmosphere
hydrosphere
lithosphere
Answer:
D: lithosphere
How many atoms are in 2.5mol of sodium
Answer:
1024 sodium atoms.
The vapor pressure of liquid hexane, C_6 H_14, is 40.0 mm Hg at 271 K. A sample of C_6 H_14 is placed in a closed, evacuated container of constant volume at a temperature of 400 K. It is found that all of the C_6 H_14 is in the vapor phase and that the pressure is 74.0 mm Hg. If the temperature in the container is reduced to 271 K, which of the following statements are correct? Choose all that apply. a) Liquid hexane will be present. b) Some of the vapor initially present will condense. c) Only hexane vapor will be present. d) No condensation will occur. e) The pressure in the container will be 50.1 mm Hg.
Answer:
Only Options (c), (d) and (e) are correct.
Explanation:
Without mincing words let's dive straight into the solution to the question above.
The following parameters from the question are given below which are going to aid in solving this question.
=> The vapor pressure of liquid hexane = 40.0 mmHg, Temperature, T1 = 271K.
=> The temperature, T2 = 400 K, the pressure,P2 = 74.0 mm Hg. The reduced temperature,T3 in the container = 271 K.
What is needed now is to Determine the final temperature, T3 = 271/400 × 74 = 50.01 mmHg.
Therefore, we only have the presence of the vapour of Hexane and there is no condensation. Hence, option c, d and e are the only correct options.
How many grams will be needed to make a 1.00 Liter solution of 0.500M
sodium chloride?
Mass of NaCl = 29.25 g
Further explanationGiven
A 1.00 Liter solution of 0.500 M Sodium chloride
Required
Mass of NaCl
Solution
Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution
[tex]\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}[/tex]
Input the value :
n = M x V
n = 0.5 x 1
n = 0.5 mol
Mass NaCl :
= mol x MW
= 0.5 x 58.5
= 29.25 g
what is the formula for the polyatomic ion and name the following compound
Sn(NO2)2
The chemical formula for the polyatomic ion is NO₂⁻ and name of the following compound is tin (II) nitrite.
Chemical formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols of elements. It also makes use of brackets and subscripts.
Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form is called empirical formula.
There are four types of chemical formula:
1)empirical formula
2) structural formula
3)condensed formula
4)molecular formula
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On the illustration above , you have a diagram of paper chromatography . The ink spots are represented at the bottom of the paper and the separated dyes are at different distances towards the top of the paper Why do the components of the dyes move to different heights?
Answer:
The components move towards different height because of their density as the water is being absorbed by the paper the water would take the components which has lower density up and would let the lower density component to remain in its place
Hope it helps
2 H2 + O2= 2 H2O
Determine the moles of o, that would be consumed if 8.0 moles of H2O
are produced
Answer:
the answer is 4.0moles
Explanation:
1mole of O2 produce 2moles of H2O/x mole will produce 8.0moles of H2O then the answer is 4.0moles.
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12 Calculate the volume of concentrated sulphuric acid (density 1.84 g/mL), containing 98.0% H2SO4 by mass, that
would contain 40.0g pure H2SO4.
A 32.2mL B 52.2mL C 22.2mL D 42.2mL
Answer:a
Explanation:
ddk
The planets in the solar system revolve around the sun because the sun is
Answer:
Newton realized that the reason the planets orbit the Sun is related to why objects fall to Earth when we drop them. The Sun's gravity pulls on the planets, just as Earth's gravity pulls down anything that is not held up by some other force and keeps you and me on the ground.