To calculate the volume in milliliters of glycerin with a mass of 0.75 lbs, first convert the mass to kilograms, then use the specific gravity of glycerin (1.26) to find its density and divide the mass by this density to get the volume, which is then converted from cubic meters to milliliters.
To calculate the volume of glycerin in milliliters with a mass of 0.75 lbs, we need to use the specific gravity and the relationship between mass, density, and volume. The specific gravity of glycerin is given as 1.26, which means glycerin is 1.26 times denser than water at the same temperature and pressure. The density of water is approximately 1 g/cm³ or 1000 kg/m³.
To find the density of glycerin, we multiply the specific gravity by the density of water: density of glycerin = 1.26 x 1000 kg/m³ = 1260 kg/m³.
Next, we need to convert 0.75 pounds to kilograms, knowing that 1 pound is equivalent to 0.453592 kilograms. Therefore, the mass of glycerin is 0.75 lbs x 0.453592 kg/lbs = 0.340194 kg.
To find the volume in cubic meters, we divide the mass by the density: volume of glycerin = 0.340194 kg / 1260 kg/m³ = 0.00027015 m³.
Finally, to convert cubic meters to milliliters, we use the conversion factor that 1 m³ is equal to 1,000,000 milliliters, resulting in a volume of glycerin of about: 0.00027015 m³ x 1,000,000 mL/m³ = 270.15 mL of glycerin.
If a hydrogen atom gains an electron, then
If you added 1.0 ml of the unknown pb(no3)2 to a test tube, what is the amount of hi in ml
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The blank variable response to changes in the manipulated variable
You wish to calculate the mass of hydrogen gas that can be prepared from 5.06 g of srh2 and 4.34 g of h2o.
How would the results differ if you added sodium p-toluate instead of p-toluic acid to the two-layered mixture of?
A curve showing the relationship between temperature and time for a given amount of liquid heated a constant rate is a __________ curve. a. heating c. liquid b. molar d. energy
which of the following would be the SI unit to use in the measuring the temperature of a hot liquid? A: ampere B: Mole C: Kelvin D: celsius
Hey, I know i'm too late but the answer is
C. Kelvin
Kelvin is the correct SI unit used to measure the temperature of substance.
Hope this somewhat helps! :)
How many molecules are in 2.50 moles of SO2
Every compound or element has a fixed number of molecules per mole. This is given by the Avogadros number which is about 6.022 x 10^23 molecules per mole. Therefore:
molecules = 2.50 moles * (6.022 x 10^23 molecules / mole)
molecules = 1.5055 x 10^24 molecules of SO2
Final answer:
To find the number of molecules in 2.50 moles of sulfur dioxide (SO₂), multiply 2.50 moles by Avogadro's number (6.022 x 10²³ molecules/mole), resulting in 1.506 x 10²⁴ molecules of SO₂.
Explanation:
The question of how many molecules are in 2.50 moles of SO₂ (sulfur dioxide) can be answered by using Avogadro's number, which is a key concept in chemistry. Avogadro's number (6.022 × 10²³) represents the number of entities, in this case, molecules, in one mole of a substance.
Therefore, to find out how many molecules are present in 2.50 moles of SO₂, we multiply the moles of SO₂ by Avogadro's number.
2.50 moles of SO₂ × 6.022 × 10²³ molecules/mole = 1.506 × 10²⁴ molecules of SO₂.
How many xenon atoms are contained in 2.36 moles of xenon? 3.92 x 1024 xenon atoms 2.55 x 1023 xenon atoms 1.42 x 1024 xenon atoms 7.91 x 1025 xenon atoms 1.87 x 1026 xenon atoms?
The number of atoms can be calculated by multiplying the number of moles with the Avogadros number. The Avogadros number is 6.022 x 10^23 atoms / moles, therefore:
number of atoms = 2.36 moles * 6.022 x 10^23 atoms / mole
number of atoms = 1.42 x 10^24 atoms
Answer:
1.42 x 10^24 xenon atoms
Answer:
c
Explanation:
because its c
A 13.2 mL rock weighs 47.6 g. Determine it's density. (Show ALL Work)
Answer: The density of rock is 3.60 g/mL
Explanation:
To calculate density of a substance, we use the equation:
[tex]\text{Density of a substance}=\frac{\text{Mass of a substance}}{\text{Volume of a substance}}[/tex]
We are given:
Mass of rock = 47.6 g
Volume of rock = 13.2 mL
Putting values in above equation, we get:
[tex]\text{Density of rock}=\frac{47.6g}{13.2mL}\\\\\text{Density of rock}=3.60g/mL[/tex]
Hence, the density of rock is 3.60 g/mL
If you add meoh to cocl2(alc)2, the cocl2(alc)2 concentration will change. what are the two reasons for this concentration change?
What is the ratio of [a–]/[ha] at ph 3.75? the pka of formic acid (methanoic acid, h–cooh) is 3.75?
The formula for pH given the pKa and the concentrations are:
pH = pKa + log [a–]/[ha]
Therefore calculating:
3.75 = 3.75 + log [a–]/[ha]
log [a–]/[ha] = 0
[a–]/[ha] = 10^0
[a–]/[ha] = 1
Answer:
[tex]\frac{[A^-]}{[HA]}=1[/tex]
Explanation:
Hello,
In this case, one state the following relationship among the pH, pKa and the [a–]/[ha] ratio for the formic acid:
[tex]\frac{[A^-]}{[HA]}=\frac{Ka}{[H^+]}[/tex]
In such a way, we compute both the concentration of hydrogen ions and the acid's dissociation constant as:
[tex][H^+]=10^{-pH}=10^{-3.75}=1.78x10^{-4}M[/tex]
[tex]Ka=10^{-Ka}=10^{-3.75}=1.78x10^{-4}[/tex]
Thus, the [a–]/[ha] ratio becomes:
[tex]\frac{[A^-]}{[HA]}=\frac{1.78x10^{-4}}{1.78x10^{-4}}\\\frac{[A^-]}{[HA]}=1[/tex]
Best regards.
Indicate which reaction will occur faster. explain your reasoning. select the single best answer. solvolysis of 1−chloro−2,2−dimethylpropane or tert−butyl chloride in ethanol
The solvolysis of 1−chloro−2,2−dimethylpropane (also known as tert-butyl chloride) will occur faster than the reaction of tert-butyl chloride in ethanol due to the greater stability of the resulting carbocation.
Explanation:The solvolysis of 1−chloro−2,2−dimethylpropane (also known as tert-butyl chloride) will occur faster than the reaction of tert-butyl chloride in ethanol. The reason is because 1-chloro-2,2-dimethylpropane is a tertiary alkyl halide, which means it has a highly substituted carbon atom attached to the halide. This high substitution stabilizes the transition state via hyperconjugation, thereby significantly accelerating solvolysis.
This implies that the rate of reaction is directly proportional to the stability of the carbocation formed during solvolysis; tertiary carbocations are more stable than secondary ones due to hyperconjugation and inductive effect. Therefore, tertiary halides undergo solvolysis more readily than secondary halides.
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G brønsted-lowry proton transfer reaction, hydroxide functions as a/an ______.
In a bronsted lowry proton transfer reaction, the hydroxide functions as a/an proton acceptor.
Bases are the opposite of acids. Bases are basic since they take or accept protons. For example, a Hydroxide ion can accept a proton to form water.
Answer:
Base
Explanation:
A Brønsted-Lowry acid is simply a compound that supplies a hydrogen ion in a reaction. A Brønsted-Lowry base on the other hand, is a compound that accepts a hydrogen ion in a reaction.
Thus, the Brønsted-Lowry definitions of an acid and a base focus on the movement of hydrogen ions in a reaction, rather than on the production of hydrogen ions and hydroxide ions in an aqueous solution.
The hydroxide ion in these compounds accepts a proton (Hydrogen ion) from acids to form water: This means shydroxides functions as a base.
Using the mass of the proton 1.0073 amu and assuming its diameter is 1.0×10−15m, calculate the density of a proton in g/cm3.
Answer : [tex] 3.2 X 10^{15} g/cm^{3} [/tex]
Explanation : To convert amu i.e. atomic mass unit in grams we have the conversion factor as 1 amu = [tex] 1.66054 X 10^{-24} g [/tex]
we know the mass of the proton is 1.0073 amu
So converting it into grams we have to multiply;
1.0073 amu X [tex] 1.66054 X 10^{-24} g/amu [/tex] = [tex] 1.673 X 10^{-24} g [/tex]
Now, Volume = 1/6πd³ as diameter is given as [tex] 1.0 X 10^{-15} m [/tex] converting it to cm will require to multiply with 100
∴ Volume = 1/6π [tex](1.0 X 10^{-15}mX 100 cm / 1 m)^{3} [/tex]
Hence, volume = [tex] 5.236 X 10^{-40} cm^{3} [/tex]
Therefore, Density = mass / volume
∴ Density = [tex] 1.673 X 10^{-24} g / 5.236 X 10^{-40} cm^{3} [/tex]
Therefore, Density will be [tex] 3.2 X 10^{15} g/cm^{3} [/tex].
The density of a proton in g / cm₃ = 3.19.10⁻¹⁵
Further explanationAtoms are composed of 3 types of basic particles namely protons, electrons, and neutrons
the mass of the basic particle is expressed in units of atomic mass
This atomic unit uses the standard atomic mass, that is, the C-12 isotope
1 atom C-12 = 12 atomic mass units
1 atomic mass unit = 1/12 x mass 1 C-12 atom
1 unit of atomic mass = 1.66.10 ⁻²⁴ g
the basic particle mass in atomic mass units is:
electron mass = 9.11.10⁻²⁸ g
proton mass = 1.6726.10⁻²⁴ g
neutron mass = 1,675.10⁻²⁴ g
The proton mass is considered to be equal to 1 atomic mass unit and is also considered to be equal to 1 atomic mass unit
1 unit of atomic mass = 1.6726.10⁻²⁴ g = 1.6726.10⁻²⁷kg
Density is a quantity derived from the mass and volume
density is the ratio of mass per unit volume
The unit of density can be expressed in g / cm³ or kg / m3³
Density formula:
[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]
ρ = density
m = mass
v = volume
Assume protons as spheres
with a diameter of 1.0 × 10⁻¹⁵m = 1.0.10⁻¹³ cm
then the volume = 4/3 π r³ or 1/6πd³
proton volume = 1 / 6π(1.0 × 10⁻¹³)³
proton volume = 5.23.10⁻⁴⁰
density becomes:
density = mass: volume
density = 1.6726.10⁻²⁴: 5.23.10⁻⁴⁰
density = 3.19.10⁻¹⁵ g/cm³
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When scientists looked at the polarity of bands of rock on either side of the mid-ocean ridges, what did they find? A. that there was no pattern B. that the patterns were different C. that the polarities were at right angles D. that the patterns of polarity matched up on both sides
Answer:
B. that the patterns were different
Explanation:
When the scientist looked at the oceanic ridges at the surface they found on either side were the polarity of bands of rocks as on either side of the oceanic ridges where the positive and negative anomalies. Being composed of hard and soft rocks, these tend to have been in strips of black and white bands or rocks aligned due to the upwelling of new lava on the sides of the ridges throughout the evolutionary history of the planet. Polarities have also been documented to have been aligned in coordination with earth magnetic poles, Being basaltic these rocks have varying ages as older rocks are found away from the mid-oceanic ridges due to the impact of spreading out of lava or magma.How many moles of n are in 0.163 g of n2o?
First convert 0.163 grams of N2O to mol by dividing it with the molecular weight. The molecular weight of N2O is 44 grams/mol. The answer would be 3,79x10^-3. Then multiply it with 2 since there are 2 Nitrogen in one mole of N2O. Therefore, there are 7.41x10^-3 moles of Nitrogen.
Answer:
[tex]n_N=7.41x10^{-3}molN[/tex]
Explanation:
Hello,
In this case, one develops the following mass-mole relationship, taking into account that [tex]N_2O[/tex] has two nitrogens inside, thus:
[tex]n_N=0.163gN_2O*\frac{1molN_2O}{44gN_2O}*\frac{2molN}{1molN_2O}\\n_N=7.41x10^{-3}molN[/tex]
Best regards.
Which situation would result in a theory being replaced rather than revised?
Advent of new information that poses challenges to existing theories would result in a theory being replaced rather than revised.
What is theory?Theory is defined as a thoughtful explanation which is provided for observations which is constructed using scientific methods.The theory brings together many facts and hypothesis.
It is called as theory as it provides some set of assumptions initially which provide description to the field's approach to the subject.These are elementary theorems of a particular theory.It is a rational type of thinking about a set of observations.
They may be scientific,or non scientific or have no discipline at all.There are three types of theory:1) scientific, 2)philosophical and 3) moral.It provides explanation regarding the underlying mechanisms .
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physical or chemical change. metal surface that becomes dull on exposure to air
how is osmosis different from diffusion?
Which of these activities might involve a chemist?
High-purity silicon is obtained using a three-step process. the first step involves heating solid silicon dioxide, sio2, with solid carbon to give solid silicon and carbon monoxide gas. in the second step, solid silicon is converted into liquid silicon tetrachloride, sicl4, by treating it with chlorine gas. in the last step, sicl4 is treated with hydrogen gas to give ultrapure solid silicon and hydrogen chloride gas. part a write balanced chemical equations for the first step involved in this three-step process. express your answer as a chemical equation. identify all of the phases in your answer.
Use appropriate metric prefixes to write the following measurement without use of exponents 15.7 x 10^3g
Any proposed solution of a rational equation that causes a denominator to equal _______ is rejected.
Any rational equation that the denominator is equal to zero will be rejected. The denominator of the rational equation must never be equal to zero. These are called Extraneous Roots and this must be rejected. The extraneous roots appear when we are solving an equation in a perfectly correct way, because certain operations have more than one solution.
In the compound sodium methoxide (naoch3), there is ________ bonding
The phosphate functional group in the non cyclic amp molecule answer
AMP is a nucleotide which stands for Adenosine monophosphate and it is also known as 5'-adenylic acid. It can exist as a cyclic adenosine monophosphate molecule and non cyclic adenosine monophosphate.
Cracking the periodic table code why aren't the elements listed in alphabetical order answer key
The elements in the periodice table are not listed in alphabetical order, because the arragement in rows (periods) and columns (groups or familes), in increasing order of atomic number (number of protons of the atoms) permits to explain similarities among the elements, trend in some properties, and even predict properties of unknown elements.
For example, the elements of the first group (family), called alkaline metals, all have 1 valence electron, have similar physical properties (ductibility, malleability, luster, thermal and electricity conductivity), react in similar way with water, show a trend in the atomic radii and in the ionization energy.
You can tell similar stories for other groups like, alkalyne earth metals, halogens and noble gases.
You can also tell trends in electroneativities, and atomic radii, for a row of elements, as per the order they are in the row.
So, the current array resulted very helpul for chemists to explain and predict the behavior and properties of the elements.
The periodic table of elements is organized based on chemical properties and atomic structure, not in alphabetical order. Elements are arranged in ascending order of their atomic numbers, and elements in the same group have similar chemical properties.
Explanation:The elements on the periodic table are not listed in alphabetical order, but instead they are organized based on their chemical properties and atomic structure. This organization makes it easier to understand and predict how different elements will react with each other. The elements are arranged in ascending order based on their atomic number, which is the number of protons in an atom's nucleus. Elements in the same group (vertical column) have similar chemical properties because they have the same number of electrons in their outer shell.
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Which action is not an example of work
What is the effective nuclear charge experienced by the 2p and 3p electrons of a chlorine atom, respectively?
Effective nuclear charge by 2p = 13.35
Effective nuclear charge by 3p = 6.1
Further explanation
The effective nuclear charge is the nuclear charge which is influenced by the shielding effect of electrons
The effective nuclear charge (Zeff) can be formulated as:
[tex]\large{\boxed{\bold{Z_{eff}\:=\:Z\:-\:S}}}[/tex]
with
Z = nuclear charge = atomic number
S = shield constant
Shielding constants are constants that are generated from the core attraction of electrons in the inner skin
Rules for calculating shield constants
1. Electrons in orbitals are grouped according to skin/ 1s / 2s, 2p / 3s, 3p / 3d / 4s, 4p / 4d / 4f / 5s, 5p / 5d / 5f /
2. Electrons to the right of the electron studied by shield constants = 03. The electron to the left of the electron is studied by its shield constant:* Electrons in the same shell shielding effects = 0.35
* Electrons in the skin have deeper shielding effects = 0.85
* Electrons in the skin are deeper than shielding effects = 1.00
On Cl atom which have electron configurations:
1s² 2s² 2p⁶ 3s² 3p⁵
1. if we view the initial charge at 2p then the configuration1s² 2s² 2p⁶
the electron to the right of 2p does not have a shielding effect
so the shield constant:
S = 0.35. 8 + 0.85.1
S = 3.65
Zeff = Z - S
Zeff = 17 - 3.65 = 13.35
2. if we view the initial charge at 3p then the configuration1s² 2s² 2p⁶ 3s² 3p⁵
because 3p⁵ then only 4 electrons are counted so there are 2 + 4 = 6 electrons in the skin 3
so the shield constant:
S = 0.35 x 6 + 0.85 x 8 + 1 x 2
S = 10.9
Zeff = 17-10.9 = 6.1
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The effective nuclear charge can be calculated from Slater's rules.
According to Slater's rule, the effective nuclear charge is obtained from;
Zeff = Z - S
Zeff = effective nuclear charge
Z = nuclear charge
S = screening
Note that;
Electrons in ns and np orbitals have S = 0.35Electrons in the penultimate shell (n - 1) has S = 0.85Electrons in (n - 2) shell has S = 1.00For a 2p chlorine electron;
Chlorine has electron configuration, 1s2 2s2 2p6 3s2 3p5
S = 7(0.35) + 2(0.85) = 2.45 + 1.7 = 4.15
The total nuclear charge of chlorine Z = 17
Zeff = 17 - 4.15
Zeff = 12.85
For the 3p electron;
S = 6(0.35) + 8(0.85) + 2(1.00)
S = 2.1 + 6.8 + 2 = 10.9
Zeff = 17 - 10.9
Zeff = 6.1
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The rock had a mass of 500g and a density of 10 g/cm3. What is the volume of the rock