Answer:
Alkyne
Explanation:
The homologous series for this compound is the Alkyne because of the presence of the triple bond present between the third and fourth carbon atoms as seen in the picture attached.
Hydrogen has 2 naturally occurring isotopes hydrogen -1 and hydrogen-2. what is the symbol for each of these isotopes?
Answer:
Their nuclear symbols are therefore 1H, 2H, and 3H.
Explanation:
2LiClO+KHSO - Li2SO4 + Cl2 + KOOH
1. How many moles of KOOH is produced, if you started the reaction with 5 moles of
LiCIO?
Answer:
2.5 moles of KOOH are produced.
Explanation:
1)Given data:
Number of moles of KOOH produced = ?
Number of moles of LiClO = 5 mol
Solution:
Chemical equation:
2LiClO + KHSO₄ → Li₂SO₄ + Cl₂ + KOOH
now we will compare the moles of KOOH and LiClO.
LiClO : KOOH
2 : 1
5 : 1/2×5 = 2.5
2.5 moles of KOOH are produced.
define blood circulation brefly
Answer:
blood circulation The circulation of blood refers to its continual flow from the heart, through branching arteries, to reach and traverse the microscopic vessels in all parts of the body, reconverging in the veins and returning to the heart, to flow thence through the lungs and back to the heart to start the circuit.
That is the answer. Your welcome
How many moles are in 265 grams of Na2CO3?
Answer:
The answer is 105.98844.
Explanation:
We assume you are converting between grams Na2CO3 and mole. You can view more details on each measurement unit: molecular weight of Na2CO3 or mol This compound is also known as Sodium Carbonate. The SI base unit for amount of substance is the mole.
Considering the definition of molar mass, 2.5 moles are in 265 grams of Na₂CO₃.
But first you have to know that molar mass is the mass of one mole of a substance, which can be an element or a compound.
In a compound the molar mass is equal to the sum of the weight or atomic mass of its atoms multiplied by their quantity.
In this case, the atomic mass of the elements of the compound are:
Na: 23 g/moleC: 12 g/moleO: 16 g/moleThen the atomic mass of the compound Na₂CO₃ is:
Na₂CO₃= 2× 23 g/mole + 12 g/mole + 3×16 g/mole
Na₂CO₃= 106 g/mole
Then you can apply the following rule of three: if by definition of molar mass 106 grams of the compound are contained in 1 mole, 265 grams are contained in how many moles?
[tex]amount of moles=\frac{265 gramsx1 mole}{106 grams}[/tex]
amount of moles= 2.5 moles
In summary, 2.5 moles are in 265 grams of Na₂CO₃.
Learn more:
https://brainly.com/question/15721168?referrer=searchResultshttps://brainly.com/question/15484208?referrer=searchResultshttps://brainly.com/question/14124542?referrer=searchResultshttps://brainly.com/question/2903329?referrer=searchResultsstructural formula of 1 methyl butane
Answer:
CH(CH3)2C2H5 or C5H12
Explanation:
Methyl butane or isopentane is an hydrocarbon or an alkane hydrocarbon with the formula C5H12. It has five carbons and twelve hydrogens. It is volatile and highly flammable. It has high boiling point and it can boil away at room temperature on a noon day. It is use as refrigerants. It can easily vanishes to the atmosphere when exposed
When temperature increases, the random movement of molecules increases which subsequently increases diffusion rate. If you have the same concentration of each of the following substances and they all have the same molecular weight, predict which substance will have the greatest diffusion rate?
a. substance #3 in aliquid at 64' F
b. substance 14 in a gas at 32 F
c. substance #2 in aliquid at a 32°F
d. substance #5 in a gas at 78' F
e. substance in a semisolid at 78' F
Answer:
d. substance #5 in a gas at 78' F
Explanation:
Diffusion in substances simply has to do with the movement of the particles of a substance from one point to another.
The rate of diffusion varies in gases, liquids and solids. Gas molecules are usually more energetic than molecules of solids and liquids. Gases and are also in constant random motion at high velocities.
Therefore, substance #5 in a gas at 78' F will have the greatest diffusion rate.
Object A has a density of 2.0 and a mass of 100 g. Object B a density of 0.8 and a mass of 240 g. Object Ca
density of 5.0
and a mass of 100 g. Which of the objects above (A, B, or C) has the least volume?
cm
To determine which object has the least volume, we can calculate the volume of each object using the formula of density. From this, Object C has the smallest volume of 20 cm³ among Objects A, B, and C.
The formulae of volume:
Volume = Mass / Density
Let's calculate the volumes of objects A, B, and C:
For Object A:
Density = 2.0 g/cm³
Mass = 100 g
Volume of A = Mass / Density
Volume of A = 100 g / 2.0 g/cm³
Volume of A = 50 cm³
For Object B:
Density = 0.8 g/cm³
Mass = 240 g
Volume of B = Mass / Density
Volume of B = 240 g / 0.8 g/cm³
Volume of B = 300 cm³
For Object C:
Density = 5.0 g/cm³
Mass = 100 g
Volume of C = Mass / Density
Volume of C = 100 g / 5.0 g/cm³
Volume of C= 20 cm³
Comparing the volumes, we find that Object C has the least volume, with 20 cm³.
Therefore, Object C has the smallest volume among Objects A, B, and C.
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DEFINITION: ABILITY OF A SUBSTANCE TO BE DISSOLVED
Answer:
Solubility
Explanation:
If its not that the answer is Dissolvable.... you didn't give a word bank.
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Element X has two naturally occurring isotopes, 65X (isotopic mass 65.0457 amu, abundance 20.53%) and 67X (isotopic mass 66.9704 amu, abundance 79.47%). Calculate the atomic mass of element X.
Answer:
66.5753 amu
Explanation:
From the question given above, the following data were obtained:
Isotope A (⁶⁵X):
Mass of A = 65.0457 amu
Abundance of A = 20.53%
Isotope B (⁶⁷X):
Mass of B = 66.9704 amu
Abundance of B = 79.47%
Atomic mass of X =?
The atomic mass of X can be obtained as follow:
Atomic mass = [(mass of A × A%)/100] + [(mass of B × B%)/100]
= [(65.0457 × 20.53)/100] + [(66.9704 × 79.47)/100]
= 13.3539 + 53.2214
= 66.5753 amu
Therefore, the atomic mass of X is 66.5753 amu.
Element X, with an atomic mass of 66.58 amu, has 2 naturally occurring isotopes, ⁶⁵X (65.0457 amu, 20.53%) and ⁶⁷X (66.9704 amu, 79.47%).
What is the average atomic mass?The average atomic mass (atomic mass) of an element is the sum of the masses of its isotopes, each multiplied by its natural abundance.
Element X has 2 isotopes:
⁶⁵X with an isotopic mass of 65.0457 amu and an abundance of 20.53% (0.2053).⁶⁷X with an isotopic mass of 66.9704 amu and an abundance of 79.47% (0.7947).We can calculate the average atomic mass of X using the following expression.
mX = m⁶⁵X × ab⁶⁵X + m⁶⁷X × ab⁶⁷X
mX = 65.0457 amu × 0.2053 + 66.9704 amu × 0.7947
mX = 66.58 amu
Element X, with an atomic mass of 66.58 amu, has 2 naturally occurring isotopes, ⁶⁵X (65.0457 amu, 20.53%) and ⁶⁷X (66.9704 amu, 79.47%).
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The chemical equation below shows the combustion of propane (C3H8).
C3H8 + 5O2 Right arrow. 3CO2 + 4H2O
The molar mass of oxygen gas (O2) is 32.00 g/mol. The molar mass of C3H8 is 44.1 g/mol. What mass of O2, in grams, is required to completely react with 0.025 g C3H8?
0.018
0.034
0.045
0.091
Answer:
0.091
Explanation:
just took test on edg
Answer:
0.091
Explanation:
correct on edge 2021 unit test
Which food does an animal with wide, flat teeth most likely eat?
O A fish
O B. meat
O c. plants
OD. Insects
Answer:
plants
Explanation:
Convert this measurement, 3.2x10-3 mm, from scientific notation to standard notation
Answer:
0.0032mm
Explanation:
Given dimension:
Measurement = 3.2 x 10⁻³mm
Unknown:
Write in standard notation from scientific notation = ?
Solution:
The standard notation is the way we normally write.
For example; standard notation of 1 million is 1000000
Now;
3.2 x 10⁻³ = [tex]\frac{3.2}{1000}[/tex] = 0.0032mm
3.2x10⁻³ mm in standard notation is 0.0032 mm. The normal or generally accepted manner of representing or expressing anything is referred to as standard notation.
Standard notation refers to the conventional or widely accepted way of representing or expressing something. In mathematics, for example, standard notation refers to the commonly used symbols and formats for writing mathematical expressions, equations, or numbers. The use of standard notation ensures uniformity, ease of understanding, and communication among mathematicians and students. Powers of 10 are used in scientific notation to express extremely large or extremely small quantities. 3.2x10⁻³ mm in standard notation is 0.0032 mm.
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A gas mixture consists of 60.0% Ar, 30.0% Ne, and 10.0% Kr by volume. If the pressure of this gas mixture is 80.0 kPa, what is the partial pressure of each of the gases
Answer: The partial pressure of Argon , Neon and krypton are 48 kPa , 24 kPa and 8 kPa respectively.
Explanation:
According to Raoult's Law , the partial pressure of each component in the solution is equal to the total pressure multiplied by its mole fraction. It is mathematically expressed as
[tex]p_A=x_A\times P_{total}[/tex]
where, [tex]p_A[/tex] = partial pressure of component A
[tex]x_A[/tex] = mole fraction of A
[tex]P_{total}[/tex] = total pressure
mole fraction of Ar = [tex]\frac{\text {Moles of Ar}}{\text {total moles}}=\frac{60.0}{60.0+30.0+10.0}=0.6[/tex]
[tex]p_{Ar}=0.60\times 80.0kPa=48kPa[/tex]
mole fraction of Ne = [tex]\frac{\text {Moles of Ne}}{\text {total moles}}=\frac{30.0}{60.0+30.0+10.0}=0.30[/tex]
[tex]p_{Ne}=0.30\times 80.0kPa=24kPa[/tex]
mole fraction of Kr = [tex]\frac{\text {Moles of Kr}}{\text {total moles}}=\frac{10.0}{60.0+30.0+10.0}=0.10[/tex]
[tex]p_{Kr}=0.10\times 80.0kPa=8kPa[/tex]
how does mixture relate to life
Answer:
For example, when we bake a cake, it's a result of a mixture of eggs, flour, sugar, and other ingredients. Any time two or more items are combined, a mixture is formed. Sometimes, the different parts of a mixture can be separated into individual entities. Other times, they're married for as long as they exist.
Explanation:
can u pls help me with this question
Answer:
Explanation:
Answer:
A
Explanation:
Why burning gasoline in a lawnmower is not physical change
Answer:
Burning gasoline in a lawnmower is a chemical change.
Explanation:
Here, a combustion reaction takes place. Freezing water to make ice cubes, melting gold to make jewellery and boiling water for soup are examples of physical change since, only a change in physical state takes place.
A student investigated how much solid was dissolved in sea water.
The student:
1. Measured the mass of an empty evaporating basin.
2. Measured 50 cm3 of sea water and poured it into the evaporating basin.
3. Heated the evaporating basin gently until all of the water had evaporated.
4. Measured the mass of the evaporating basin containing the solid residue.
5. Reheated the evaporating basin and solid residue.
6. Measured the mass of the evaporating basin and solid residue.
7. Repeated steps 5 and 6 until the mass was constant.
Name two different pieces of apparatus that would be suitable for measuring:
• The mass of the evaporating basin
• 50 cm3 of sea water
Equipment to measure the mass of the evaporating basin_______________________
Equipment to measure 50 cm3 of sea water ________________________________
Answer:
weighing balance/analytical balance
Graduated cylinder/buret
Explanation:
The mass of the evaporating basin could be measured using a weighing balance or an analytical balance. Both are classified as weighing scales but the analytical balance can measure the mass of objects up to 4 decimal places, thus, providing better accuracy in measurement than ordinary weighing balance that can only measure up to 2 decimal places.
In order to measure 50 cm3 of the sea water, a graduated cylinder or a buret can be used. Both equipment can measure up to the same decimal places and, thus, have virtually the same accuracy.
Is 4 grams of oxygen bigger than 1 mole of oxygen
Answer:
No, a mole of oxygen is about 16 grams
Explanation:
What did Aristotle believe?
A. That matter did not exist in the physical world
B. That the scientific method should be used to test ideas
C. That all matter was composed of earth, fire, water, and air
D. That all matter was composed of tiny atoms
Answer:
C.) That all matter was composed of earth, fire, water and air
Explanation:
Just took the test
what kind of structure do the cations and anions in table salt form
Answer:
ionic solids
Explanation:
Ionic solids are a regular pattern of cations and anions that arrange themselves into a continuous solid network.
NaCl is composed of sodium ions and chloride ions that are held together by Coulumbic attractive forces to form a large crystal structure.
Such ionic solids have a very high melting point and do not conduct electricity in the sold state. However, the molten substance or a solution of the substance conducts electricity.
Consider the following intermediate chemical equations.
2 equations. First: upper C (s) plus one half upper O subscript 2 (g) right arrow upper C upper O (g). Second: upper C upper O (g) plus one half upper O subscript 2 (g) right arrow upper C upper O subscript 2 (g).
How will oxygen appear in the final chemical equation?
Upper O subscript 2 (g). as a product
Upper O subscript 2 (g). as a reactant
O(g) as a product
2O(g) as a reactant
Answer:
c
Explanation:
got it right on test
Oxygen will appear in the final equation as O2 reactant.
What are chemical equation?A chemical equations shows the interplay between reactants and products. The reactants are on the left hand side while the products are at the right hand side.
Looking at the two equations, we know that oxygen will appear in the final equation as O2 reactant.
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A 25.00 mL sample of H 2SO 4 requires 31.43 mL of 0.110 M NaOH to reach the equivalence point. What is the molarity of the H 2SO 4
Answer:
0.069 M
Explanation:
Equation of the reaction:
H₂SO₄(aq) + 2NaOH(aq) ⇒ Na₂SO₄(aq)+2H₂O(l)
From the equation above, 2 mole of NaOH is required to reach equivalent point with 1 mole of H₂SO₄.
n'CV = nC'V' ........................ Equation 1
Where n and n' = are number of moles of acid and base respectively, C and C' = are molarities of acid and base respectively, V and V' are volumes of acid and base respectively.
make C the subject of the equation
C = nC'V'/n'V.............................. Equation 2
Given: n = 1, n' = 2, C' = 0.11 M, V = 25 mL, V' = 31.43 mL
Substitute into equation 2
C = (1×0.11×31.43)/(25×2)
C = 0.069 M.
Hence the molarity of H₂SO₄ is 0.069 M
5. If two gases are present in a contain the total pressure in the container is equal to
Answer:
Sum of their partial pressures
Explanation:
If two gases are present in a container, the total pressure in the container is equal to the sum of their partial pressures.
This solution is based on the Dalton's Law of Partial Pressures.
Dalton's Law of Partial Pressure states that "the total pressure of a mixture of gases is equal to the sum of the partial pressures of the constituent gases".
A partial pressure is the pressure a gas would exert if it alone occupied the volume of the gas mixture.
what are examples of actinides
Answer:
Neptunium, Protactinium, plutonium and more
Explanation:
Carbon burns in the presence of oxygen to give carbon dioxide. Which chemical equation describes this reaction?
ОА. .
carbon + oxygen + carbon dioxide
ОВ.
carbon + oxygen carbon dioxide
Ос. .
carbon dioxide carbon + oxygen
OD carbon dioxide + carbon - Oxygen
Answer:
(carbon dioxide → carbon + oxygen. (carbon dioxide + carbon → oxygen.
Explanation:
I'm not really sure if this is the answer
What is the electron shielding effect? What is the trend for it? How and why does it happen?
Answer:
See explanation
Explanation:
In an atom, the inner electrons may shield the outer electrons from the attractive force of the nucleus. We, refer to this phenomenon as the shielding effect, It is defined as a decrease in the magnitude of attraction between an electron and the nucleus of an atom having more than one electron shell (energy level).
Shielding effect increases down the group due to addition of more shells but decreases across the period due to the increase in the size of the nuclear charge.
As the magnitude of shielding increases down the group, ionization of electrons becomes easier and the first ionization energies of elements decreases as we move down the group. Since shielding effect decreases across the period, the first ionization energies of elements increases across the period.
Can you please help me it’s due at 3:00 please hurry whoever answers this correct I will mark brainliest
Suppose you have two identical 1.0 L sealed containers. Both containers are kept at exactly 25oC. One vessel contains only neon gas at 1.5 atm, and the other contains only xenon gas at 2.5 atm.
A) Is the average kinetic energy possessed by the neon atoms greater than, equal to, or less than that of the xenon atoms? Explain.
B) What variable must be changed in order to decrease the average kinetic energy of the xenon atoms?
C) Does the vessel with the xenon gas contain more, fewer, or the same number of gas particles as the vessel of neon gas? Explain.
Answer:
See explanation
Explanation:
a) The average kinetic energy of the molecules of a gas depends on the temperature and the molar mass of the gas. However, at the same temperature, all gases have the same average kinetic energy. Hence Xe and Ne atoms have the same average kinetic energy.
b) To decrease the kinetic energy of Xe atoms the temperature must be changed. When the temperature is changed, Xe a lower average kinetic energy due to its larger molar mass.
c) All gases occupying the same volume have equal number of particles at the same temperature and pressure according to Avogadro's law. Therefore, since Xe and Ne occupy the same volume at the same temperature but different pressures they do not contain the same number of particles. Xe gas contains more particles because there are more moles of Xe gas present than moles of Ne gas. The greater the number of moles of gas present, the more the number of gas particles present.
100. mL of 0.100 M HCl aqueous solution is mixed with 200. mL of 0.100 M CaCl2 solution to make a 300.mL solution. Find the molarity of the Cl- and pOH in the mixed solution Question 7 options:
Answer:
Explanation:
HCl ⇄ H⁺ + Cl⁻
HCl is a strong electrolyte so it will ionize completely .
moles of Cl⁻ in 100 mL of .1 HCl = .1 x .1 = .01 gram - ion .
CaCl₂ = Ca⁺² + 2 Cl⁻
1 mole 2 mole
moles of CaCl₂ in 200 mL of .1 M CaCl₂ = .2 x .1 = .02 gram mole .
.02 gram mole of CaCl₂ will give 2 x .02 = .04 gram-ion of Cl⁻ ion .
Total gram - ion of Cl⁻ = .01 + .04 = .05 gram-ion .
Total volume = 300mL = .3 L
molarity of Cl⁻ = .05 / .3 = .167 M .
HCl ⇄ H⁺ + Cl⁻
moles of H⁺ = moles of Cl⁻ = .01 gram-ion .
volume of solution = .3 L
molarity of H⁺ = .01 / .3 = 33.33 x 10⁻³ M .
[ H⁺] [ OH⁻] = 10⁻¹⁴
33.33 x 10⁻³ [ OH⁻] = 10⁻¹⁴
[ OH⁻] = 3 x 10⁻¹³
pOH = - log[OH⁻] = - log3 x 10⁻¹³
13-log3
= 13 - .477
12.52
or ,
pH = - log[H⁺] = - log33.33 x 10⁻³
3 - log 33.33
= 3 - 1.52
= 1.48
pOH = 14 - 1.48 = 12.52
Methanol, or wood alcohol, is the combustible material used in sterno. Write a balanced equation for the complete oxidation reaction that occurs when methanol (CH3OH) burns in air. Use the smallest possible integer coefficients.
Answer:
2CH₃OH + 3O₂ → 2CO₂ + 4H₂O
Explanation:
A complete reaction for when any organic compound burns in air, produces only water and carbon dioxide. It does so by reacting with the oxygen gas (O₂) present in air.
In the case of methanol (CH₃OH) combustion, the balanced reaction is:
2CH₃OH + 3O₂ → 2CO₂ + 4H₂O