The consequence of the reaction between sulfuric acid and tetrazine is fire. Option D
How does sulfuric acid react with tetrazine?The compound tetrazine is a basic compound that is composed of four atoms of hydrogen and two atoms of carbon. The formula of the compound is [tex]C_{2} H_{2}N_{4}[/tex] . The compound is a six membered ring that could react with acids and become decomposed. In all cases of the decomposition of the tartazine the reaction is a violent one that leads to the evolution of flames.
In this case, we have been told that there is a reaction between sulfuric acid and tetrazine. This is a very violent reaction that would result in the charring of the substrate.
Thus, when there is a chemical interaction between sulfuric acid and tetrazine, the result is fire.
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25.00 cm³ of 0.250 mol dm sodium hydroxide solution is neutralised by 25.0 cm³ of sulfuric acid. Calculate the concentration of the sulfuric acid in mol dm. H₂SO4(aq) + 2NaOH(aq) → Na₂SO4(aq) + 2H₂O(l)
concentration of sulfuric acid is 0.124mol/dm³
Given,
volume of sulfuric acid is 25 cm³
1 dm³ = 1000 cm3.
25.0 cm³ 0.250mol/dm3 NaOH solution contains (25/1000)×0.250 = 0.00625 mol NaOH.
2NaOH + H2SO4 → Na2SO4 + 2H2O
2 moles of NaOH neutralizes 1 mole of H2SO4.
Therefore, 0.00625 moles of NaOH neutralizes 0.00625/2 = 0.00312 moles of H2SO4.
So, the molarity of H2SO4 solution = (0.00312/25) × 1000 = 0.124 mol/dm³.
therefore concentration of sulfuric acid is 0.124 mol/dm³.
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wood needs to be given heat energy to reach the temperatures required for combustion to begin. what property of the wood would you need to know to predict how fast the wood would start to burn? explain
The property of the wood that is to be needed to know to predict how fast the wood would start to burn is combustion.
Combustion is a chemical reaction that occurs between a combustible material, a substance that causes or favors the combustion of other substances that is oxidizer and oxygen, all this accompanied by outgoing energy in the form of heat (exothermic energy) and incandescent energy.In this case, wood is the combustible material, and combustion is generated by separate energy, fire, phosphors, and sparks.Wood combustion is dependent on so many variables e,g. weather, temperature, humidityBut the wood of small size tends to ignite faster than those with larger density.To learn more about combustion visit:
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In the 1800s two scientists, Theodor Schwann and Matthias Schleidern, studied different types of organisms. After many years of studying a great variety of organismns, they drew similar but independent conclusions about their observations. F Schwann studied animal and concuded that all animals are made of cells. What statement was developed most directly from these conclusions and is part of the modern cell theory? Schleiden studied plants and concluded that all plants are made of cells. The functions of living things occur in cells. G Cells exist only in mnulticellular organisms. H Living things are composed of cells. J Cells contain hereditary information.whats the answer?
Complex cells exist only in multicellular organisms and all living things are composed of cells and DNA contain hereditary information
Multicellular organisms are made of more than one cell and are complex organisms and they possess distinct organs and organ systems and they are eukaryotes means they contain membrane-bound structures and modern cell theory that cells are the basic structural, functional, and organizational units of both single-celled and multicellular organisms and cells divide and pass on hereditary information and energy flows within cells here g is the complex cell only exist only in multicellular organisms and h is the all the living things are composed of cells and j means DNA cells contain hereditary information and DNA is responsible for genetic information
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A student is working on creating an experiment. Based on the chart they have started filling out, what section are they on? A. Hazard identification B. Risk Assessment C. Materials and Methods D. Procedure
In a case whereby a student is working on creating an experiment. Based on the chart they have started filling out, B. Risk Assessment .
What is Risk Assessment?Risk assessment can be describe as the overall process or method where the risk is been identified.
It should be noted that this does not only Identify hazards but also look into the risk factors which could bring about potential to cause harm in the process known as the hazard identification.
Therefore, from the case above we can see that there is Analyses and evaluation of the risk associated .
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A mixture weighing 6.200 grams is 28.0% silicon dioxide or sand (SiO2), 36.0% sodium chloride (NaCl), and the rest being sodium bicarbonate, NaHCO3. How many grams of baking soda are present in the sample?
The mass of baking soda, NaHCO₃ present in the sample is 2.232 g
What is the percentage mass of a substance?The percentage mass of a substance is the ratio of the mass of a substance a given mixture or compound to that of the total mass of the compound or mixture expressed as a percentage.
Percentage mass = mass of substance/ mass of mixture or compound * 100%The percentage mass of baking soda, NaHCO₃ = 100 - ( 28 + 36)%
The percentage mass of baking soda, NaHCO₃ = 36%
mass of baking soda, NaHCO₃ = 36/100 * 6.200
mass of baking soda, NaHCO₃ = 2.232 g
In conclusion, the mass of baking soda, NaHCO₃ is obtained from the total mass of the mixture and the percentage mass of baking soda in the mixture.
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there are ____ atoms are in every living thing
Answer:
There are carbon atoms in every living thing
help asap!!!!!!!!!!!!!!
Answer:
D
Explanation:
the particles stick together, it can be covalent compound or ionic compound
Carrie measured mass and another property, X, of three pure samples of the same compound. She recorded her data in the table.
Which of the following best describes property X?
The property X is an extrinsic property.
What is an extensive property?The term extensive property refers to the type of property that depends on the amount of the substance present. We must recall that an intensive property does not in any way depend on the number or the amount of the substance present in the sample.
If we have a good look at the table that is being referred to here, we would see that the mass of the substance tends to increase as a certain un named property of the substance X is increasing. This implies that the property X is affected by the mass of the object which is the quantity of matter in the object. This gives us an idea that the property that we are referring to can not be an intrinsic property since it varies with the mass of the substance that is under study as shown.
We can then conclude that the property X is an extrinsic property.
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Missing parts;
Carrie measured mass and another property, X, of three pure samples of the same compound. She recorded her data in the table. Which of the following best describes property X?
A. X is an intensive property because it does not vary with the size of the sample.
B. X is an extensive property because it does not vary with the size of the sample.
C. X is an extensive property because it varies directly with the size of the sample.
D. X is an intensive property because it varies directly with the size of the sample.
Chemical elements that do not exist in nature but can be created in the laboratory are known as synthetic elements. Flerovium, a synthetic element with atomic number 114, was first synthesized in 1998. A hypothetical mass spectrum for a sample of Fl, containing 10 atoms is shown below.
Using the information in the spectrum, calculate the average atomic mass of Fl in the sample in u.
Write your answer using four significant figures.
The relative atomic mass is 288.60
What is the atomic mass?The relative atomic mass is the sum of the products of the masses of the percentage abundance of each of the isotopes and the mass of that isotope. Recall that an element is composed of isotopes. These isotopes have the same atomic number but different mass numbers.
This implies that the isotopes have different numbers of neutrons. Let us now obtain the relative atomic mass of the element Flerovium.
Percentage abundance of isotope 1 = 2/10 * 100/1 = 20%
Percentage abundance of isotope 2 = 2/10 * 100/1 = 20%
Percentage abundance of isotope 3 = 6/10 * 100/1 = 60%
Then;
(0.2 * 287.2) + (0.2 * 288.2) + (0.6 * 289.2)
= 57.44 + 57.64 + 173.52
= 288.60
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What is an dependent variable? what a scientist changes in an experiment to test their hypothesis what a scientist changes in an experiment to test their hypothesis what happens when you do an experiment what happens when you do an experiment What you keep the same throughout all experimental groups What you keep the same throughout all experimental groups What scientist measure to see if it responded to a change What scientist measure to see if it responded to a change
Answer:
what a scientist changes in an experiment to
Explanation:
scientist measure to see if it responded to a change
Convert 7.6 cm3 to m3
Conversion of 7.6cm^3 to m^3 is 0.0000076m^3
Divide the volume by the conversion ratio to convert a cubic centimeter measurement to a cubic meter measurement. The cubic centimeters divided by 1,000,000 gives the volume in cubic meters.
The same attribute is expressed using a unit conversion, but in a different unit of measurement. For instance, time can be stated in minutes rather than hours, and distance can be expressed in kilometres, feet, or any other measurement unit instead of miles.
We need to convert between units in order to ensure accuracy and prevent measurement misinterpretation. For example, we do not measure a pencil's length in kilometers. In this situation, one must convert from kilometers (km) to centimeters (cm).
Conversion:
1m = 100cm
1m = 10^2cm
1cm = 10^-2m
1cm^3 = (10^-2)^3m^3
1cm^3 = 10^-6m^3
7.6cm^3 = 7.6 x 10^-6m^3
7.6cm^3 = 0.0000076m^3
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What determines the trend in ionization energy as you move DOWN a column on the periodic table.
Elements have a larger radius, electrons are pulled tightly, and have a higher ionization energy.
Elements have a smaller radius, electrons are pulled tightly, and have a higher ionization energy.
Elements have more energy levels, cannot pull in the electrons tightly, and have a lower ionization energy.
Elements have fewer energy levels, pull in the electrons weakly, and have lower ionization energy.
Elements have more energy levels, pull in the electrons tightly, and have a lower ionization energy.
Elements have fewer energy levels, pull the electrons tightly, and have a higher ionization energy.
Answer:
Elements have more energy levels, cannot pull in the electrons tightly, and have a lower ionization energy.
Explanation:
Mr. Perez was assigned to determine the density of a sample of nickel metal.
When he finished, he reported the density of nickel as 5.59 g/mL. After looking it
up, he found the true value of nickel is 6.44 g/mL.
The error in the given measurement is determined as 0.85 g/ml.
What is error in measurement?The error in measurement is a mathematical way to show the uncertainty in the measurement.
Error in measurement is difference between the true measurement and the observed measurement.
The error in the given measurement is calculated as follows;
error = true measurement - observed measurement
error = 6.44 g/ml - 5.59 g/ml
error = 0.85 g/ml
Thus, the error in the given measurement is determined as 0.85 g/ml.
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The complete question is below:
Find the error in the measurement
How much water is in this cylinder?
Answer:~13mL
Explanation:
You have to read from the around the middle of the meniscus (which is the curve in the liquid's surface)
HELP ASAP, NO LINKS!!
how do you write 4.13 x 103 in decimal notation?
Answer:
4130
Explanation:
When numbers are multiplied by the 10 raised to a positive power, you want to move the decimal place to the right that many places.
As such, since 4.13 is being multiplied by 10³, you want to move the decimal place to the right 3 places. Keep in mind that there are technically 0's to the right of the "3".
The number in decimal notation is 4130.
Why are carbon atoms the building blocks for life?
their bonds are easily broken and repaired.
they have a negative charge to attract other atoms.
they can freely bond with any other atom.
thier bonds woth hydrogen are very stable.
Answer:
C: They can freely bond with any other atom.
Explanation:
It is said that Because each carbon is identical, they all have four valence electrons, so they can easily bond with other carbon atoms to form long chains or rings
An experiment is repeated five times resulting in five replicate data points. The average deviation of the replicate data point is a measure of:
a Precision
b Accuracy
If 6.000 g of sugar is mixed with 9.000 g of water, what is the
concentration in weight percent?
The percent weight of the solution is 20% sugar solution.
What is the weight percent concentration of the solution?The concentration of a solution is the amount of solute that is present in a given volume or mass of a solution
The concentration of a solution can be expressed as:
molar concentrationmass concentrationpercentage concentrationThe percent weight of the solution is determined as follows:
Mass of sugar = 6.00 g
Mass of water = 9.00 g
Mass of solution = 9.00 + 6.00
Mass of solution = 15.00 g
Weight percent of solution = 6/15 * 100
Weight percent of solution = 20% sugar solution
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Use this information to calculate AGxn-
2C₂H₂(g) +50₂(g) →4CO₂(g) + 2H₂O(g)
AGCH₂=209.2 kJ/mol
AGE.co=-394.4 kJ/mol
AGHO-228.57 kJ/mol
AG
=
DONE
2,453.1
-1,616.7
-2,453.1
kJ
-1,616.7 kJ/mol
2C₂H₂(g) +50₂(g) →4CO₂(g) + 2H₂O(g)
AGC₂H₂=209.2 kJ/mol
AGE.co2=-394.4 kJ/mol
AG H2O-228.57 kJ/mol
AG 5O2 = ?
Now From the above given equation , we have got the enthalpy of no. of moles in reaction
4 moles of CO₂ contains = 4 -394.4 kJ/mol = -1577.6
2 moles of H₂O contains = 2 -228.57 kJ/mol = - 457
2 moles of C₂H₂ contains = 2 209.2 kJ/mol = +418.4
now putting all the values in equation
50₂(g) = 4CO₂(g) + 2H₂O(g) - 2C₂H₂(g)
50₂(g) = -1577.6-457-418
50₂(g) = -1,616.7 kJ/mol
The amount of heat that a system releases or absorbs during a chemical reaction is known as the enthalpy change. The symbol for it is HEnthalpy is measured in the same SI unit as energy, the joule. At constant pressure, the expression known as "enthalpy change" is computed or determined. It is impossible to measure a system's absolute enthalpy. As a result, the enthalpy change is measured. In endothermic processes, the change in enthalpy is positive, while in exothermic reactions, it is negative.To know more about Enthalpy visit : https://brainly.com/question/13775366
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CH3(CH2)12COOH
Write the total number of atoms on of that element in the compound.
The number of atoms of each element in one mole of the given compound is:
Number of C atoms = 7.826 * 10²⁴ C atomsNumber of H atoms = 1.685 * 10²⁵ H atomsNumber of O atoms = 1.204 * 10²⁴ O atomsWhat is the total number of atoms of each element in one mole of the compound, CH₃(CH₂)₁₂COOH?The total number of atoms of each element in one mole of the compound, CH₃(CH₂)₁₂COOH is determined as follows:
Number of atoms in one mole of atoms of an element = 6.02 * 10²³ atoms.
The number of moles of atoms of each element in one mole of the given compound is;
Carbon, C = 1 + 12 + 1 = 13 moles of C atoms
Hydrogen, H = 3 + 2 * 12 + 1 = 28 moles of H atoms
Oxygen, O = 2 moles of atoms of O
Number of atoms in 13 moles of C atoms = 13 * 6.02 * 10²³ atoms.
Number of atoms in 13 moles of C atoms = 7.826 * 10²⁴ C atoms
Number of atoms in 28 moles of H atoms = 28 * 6.02 * 10²³ atoms.
Number of atoms in 28 moles of H atoms of an element = 1.685 * 10²⁵ H atoms
Number of atoms in 2 moles of O atoms = 2 * 6.02 * 10²³ atoms.
Number of atoms in 2 moles of O atoms = 1.204 * 10²⁴ O atoms
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Which groups highlight nonmetals?
O A and B
O A and C
OB and D
OC and D
Answer:
1.) A and B
Explanation:
Elements in group A are nonmetals. Specifically, these elements are called noble gases.
Elements in group B are nonmetals.
Elements in group C are metalloids.
Elements in group D are metals.
Which option represents a group of elements with the same properties? (100 points for brainliest!!)
A.) neon, sodium, magnesiu
B.) calcium, potassium, scandium
C.) fluorine, bromine, chlorine
D.) arsenic, mercury, xenon
Fluorine,chlorine and bromine are elements with same properties.
What are the periodic trends in the periodic table?Properties such as the physical or chemical properties differ significantly across a period in a periodic table as electrons are added to the same valence shell.
Hence, for each successive element in a period there is one more electron in it's valence shell than the preceding element,as a result of which physical properties such as melting and boiling point differ significantly.
But for elements present in a group,as all elements in a group have same number of valence electrons ,hence they have same properties.
Among all the groups given,the group comprising of fluorine,chlorine and bromine have the same properties as they belong to the same group and have same number of valence electrons.
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A flammable gas made up of only carbon is found to effuse through a porous barrier in 1.50min. it takes an equal volume of bromine vapor 4.73min to effuse through the same barrier. Calculate the molar mass of the unknown gas and suggest what
the gas might be
Methane is the unidentified gas since its molar mass is 16 g/mol.
When describing atomic masses and molecular masses, the Dalton (Da) or unified atomic mass unit (u) are two alternative units of mass that are frequently employed. It is known to be 1/12 the mass of a carbon-12 atom and is also referred to as "amu" in older.
We must be aware that a gas's molar mass directly relates to how long it takes to diffuse.
t1/t2 = √M1/M2
Let t1 equal the 1.50 minutes it takes for the combustible gas to disseminate. Let t2 equal the 4.73 minutes it takes for the bromine vapor to disperse.
M1 = the flammable gas's molar mass equals
160 g/mol is the molar mass of the bromine vapor, or M2.
replacing values.
1.50/4.73 = √M1/160
(1.50/4.73) ^2 = M1/160
0.1006 = M1/160
M1 = 0.1006 × 160
M1 = 16 g/mol
Methane is the gas in question.
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How are you going to apply your learning in naming compounds in our daily lives?
Answer:
Compounds in our daily life are salt, water, baking soda, sugar, graphite, etc.
Explanation:
We can use the knowledge of compounds to recognise different compounds such as listed above. We can realise what they're made up of and why they are compounds.
Melting and boiling point of peppermint essential oil
Answer: Melting Point : 42 to 43 °C
Boiling Point : 215 to 216 °C
what is the role of quantum chemistry IRL
Answer:
Quantum chemistry strives to accurately predict chemical and physical properties of molecules and materials, which is useful to many fields of science and engineering. Predicting chemical properties using a first principles approach at the atomic scale is a theoretical and computational challenge.
Explanation:
Initially, 0.880 mol of A is present in a 3.00 L solution.
2A(aq)↽−−⇀2B(aq)+C(aq)
At equilibrium, 0.150 mol of C is present. Calculate K.
The value of the equilibrium constant, K of the reaction is 0.055 M
What is the value of the equilibrium constant, K of the reaction?The value of the equilibrium constant, K of the reaction is determined as follows:
Equation of reaction: 2 A (aq) ⇄ 2 B (aq) + C (aq)
Initial moles of A present = 0.88 mol
Volume of solution = 3.00 L
At equilibrium,
moles of C present = 0.150 moles
moles of B present = 2 * 0.150 moles
moles of B present = 0.300 moles
moles of A present = 0.880 - (0.300 + 0.150)
moles of A present = 0.430 moles
Concentration of C = 0.15/3 = 0.050 M
Concentration of B = 0.45/3 = 0.150 M
Concentration of A = 0.43/3 = 0.143 M
K = (0.050 * 0.150²)/0.143²
K = 0.055 M
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Write an equation for the reaction of ammoniacal silver nitrate with phenylethyne. What is the role of ammonia in the reaction?
Equation for the Reaction is C2H2+2AgNO3+2NH4OH→C2Ag2+2NH4NO2+2H2O
Phenylethyne is a type of acetylene. Phenylethyne reacts with ammoniacal AgNO3 and the reaction is known as Tollens’s Test. In the following Tollens test, we get a white precipitate. A white precipitate known as silver acetylene (C2Ag2) is produced.We know that the Tollens reagent can be used to determine whether an aldehyde or ketone functional group is present. We are aware that the Tollens reagent is made up of a silver nitrate, ammonia, and sodium hydroxide solution.A triple bond makes up acetylene, and as silver acetylide also has a triple bond in its structure, the reaction with ammoniacal AgNO3 will result in silver acetylide. Role of ammonia is that it forms silver oxide, but with the addition of more ammonia, this solid precipitate will dissolve and yield a transparent solution of the diamminesilver(I) complex ([Ag(NH3)2]+).Learn more about tollen's test here:
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1. Using the periodic table and your knowledge of patterns and trends on the table, which of the following elements is the best conductor of electricity?
A. Titanium **
B. Silicon
C. Oxygen
D. Argon
2. Using the periodic table and your knowledge of patterns and trends on the table, which of the following elements is the most reactive?
A. Titanium **
B. Silicon
C. Oxygen
D. Argon
3. Using the periodic table and your knowledge of patterns and trends on the table, which of the following elements has the highest electronegativity?
A. Titanium
B. Silicon
C. Oxygen **
D. Argon
From the periodic table as well as the patterns and trends on the table, the correct option are:
the best conductor of electricity is Titanium; option Athe most reactive element is oxygen; option Cthe elements that has the highest electronegativity is oxygen; option CWhat is the periodic trends in the periodic table?Periodic trends in the periodic table refers to the variation in character which is observed in the periodic table as one moves across the periodic table from left to right across a period or down a group in the periodic table.
The periodic trend observed is that reactivity of metals increase down a group and from right to left across a period.
For non-metals, reactivity of non-metals increase from down to top in a group and from left to right across a period across a period.
Considering the given questions;
1. From the periodic table as well as the patterns and trends on the table, the best conductor of electricity is Titanium since it is the only metal in the list.
2. The most reactive element is oxygen because it is a non-metal found to the top-left of the periodic table.
3. The elements that has the highest electronegativity is oxygen because it is a non-metal found to the top-left of the periodic table.
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100 points!
A metal (M) forms a compound with the formula MCl4 . The compound contains 54.43% Cl by mass. Identify the metal in the compound? Give the symbol of the metal
Symbol is [Sn]
Atomie weight of cl is 35.45 Hence, in the compound MCl4, contribution of a atomic weight in 35.45 4 =141.8Now, the compound contains (100-54.43)
= 45.57% of metal by mass.
Now, 54.43% by mass is related to 141.8 atomic weight
hence, 45:57% by mass is related to
=1418 x 45.57/54.43 = 118.718 atomic weight
Atomic weight of Tin (sn) is 118.71
Hence, the metal is Tin, Symbol is [Sn]
The compound is SnCl4 (Stannic chloride)
A compound is a formula that occurs in a certain ratio of a specific formula, for as carbon dioxide, which is present everywhere but only in carbon 1 and oxygen 2.To know more about compound visit : https://brainly.com/question/14658388
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