Type the correct answer in the box. a pharmacist works with a 1.75 m solution of sodium bromide (nabr) and water. the volume of the solution is 84.0 milliliters. if the pharmacist dilutes the solution to 1.00 m, what is the volume of the new solution? express your answer to three significant figures. the volume of the new solution is milliliters.
Answers
Answer: 147 mL
Explanation:
Given:
Molarity of the sodium bromide (NaBr) solution (M1) = 1.75 M
Volume of the solution (V1) = 84 mL
Molarity of the diluted NaBr solution (M2) = 1 M
Using the dilution formula to solve for V2:
\(\begin{gathered}M_{1} V_{1}=M_{2} V_{2} \\V_{2}=(1.75 \mathrm{M} \times 84 \mathrm{~mL}) / 1 \mathrm{M} \\V_{2}=147 \mathrm{~mL}\end{gathered}\)
Therefore, the new volume of the solution is 147 mL
Related Questions
The half-life for the radioactive decay of U-238 is 4.5 billion years. If a sample of U-238 initially contained atoms when the universe was formed 13.8 billion years ago, how many U-238 atoms does it contain today?
Answers
The amount of atoms of U-238 that you have today, given that half-life for the radioactive decay of U-238 is 4.5 billion years is 12.5 atoms
How do i determine the amount of atoms of U-238 remaining?We shall begin by determining the number of half-lives that has elapsed in 13.8 billion years. Details below:
Half-life U-238 (t½) = 4.5 billionTime (t) = 13.8 billionNumber of half-lives (n) =?n = t / t½
n = 13.8 / 4.5
n = 3
Finally, we shall determine the amount of atoms of U-238 remaining. Details below:
Original amoun (N₀) = 100 atomsNumber of half-lives (n) = 3Amount of atoms remaining (N) = ?N = N₀ / 2ⁿ
N = 100 / 2³
N = 100 / 8
N = 12.5 atoms
Thus, we conclude that the amount of atoms of U-238 you have after 13.8 billion years is 12.5 atoms
Learn more about amount remaining:
https://brainly.com/question/28440920
#SPJ4
what is the name of the process most commonly used to grow single crystal ingots of silicon for semiconductor processing?
Answers
The Czochralski method is the process most commonly used to grow single-crystal ingots of silicon for semiconductor processing.
The Czochralski method, also known as the Czochralski process or Czochralski technique, is a method of crystal growth employed to obtain single crystals of semiconductors such as silicon, germanium, and gallium arsenide, metals such as palladium, silver, platinum, gold), salts and synthetic gemstones.
The most important application of this method may be the growth of large cylindrical ingots, or boules, of single-crystal silicon used in the electronics industry to make semiconductor devices like integrated circuits.
Czochralski's method is not limited to the production of metal or metalloid crystals. It is also employed in the production of very high-purity crystals of salts, also used in particle physics experiments, with tight controls on confounding metal ions and water absorbed during production.
To learn more about Czochralski's method; click here:
https://brainly.com/question/28814014
#SPJ4
What volume of carbon dioxide gas is produced at STP when 125 mL of a 0.10 M nitric acid solution reacts with excess calcium carbonate? A. 6.25 ml B. 140. mL C. 280. ml D. 560. mL
Answers
At STP, 280 mL of carbon dioxide gas is created when an excess of calcium carbonate combines with 125 mL of a 0.10 M nitric acid solution. Here option C is the correct answer.
The balanced chemical equation for the reaction between nitric acid and calcium carbonate is:
\(\begin{aligned} \ce{HNO_3 + CaCO_3 &- > Ca(NO_3)_2 + CO_2 + H_2O} \ \end{aligned}\)
From the equation, we can see that one mole of calcium carbonate reacts with one mole of nitric acid to produce one mole of carbon dioxide. To determine the amount of carbon dioxide produced, we need to calculate the moles of nitric acid reacted.
Molarity (M) is defined as moles of solute per liter of solution. We have 0.10 moles of nitric acid in one liter of solution. Since we only have 125 mL of solution, we need to convert mL to L:
125 mL = 0.125 L
The moles of nitric acid reacted, therefore:
moles = M × V = 0.10 mol/L × 0.125 L = 0.0125 mol
Since one mole of calcium carbonate produces one mole of carbon dioxide, the number of moles of carbon dioxide produced is also 0.0125 mol.
At STP (standard temperature and pressure), one mole of any gas occupies 22.4 L of volume. Therefore, the volume of carbon dioxide produced at STP is:
V = n × 22.4 L/mol = 0.0125 mol × 22.4 L/mol ≈ 0.28 L ≈ 280 mL
To learn more about carbon dioxide gas
https://brainly.com/question/15153008
#SPJ4
Which of the following BEST accounts for the charge in potential energy going from Point B to Point A?As the atoms get closer together, their nuclei begin to repel one another,As the atoms get closer together, the attraction of the nucleus of each atom for the electron(s) of the other gets stronger and stronger,As the molecules get closer, they slow down, converting kinetic to potential energy,The bond is becoming stronger as the atoms approach each other.
Answers
The statement which accounts for the change in potential energy going from Point B to Point A is that as the atoms get closer together, the attraction of the nucleus of each atom for the electron(s) of the other gets stronger and stronger and is denoted as option B.
What is Potential energy?This is referred to as the energy possessed by a body by virtue of its position.
The change in the potential energy is as a result of the atoms getting closer which leads to the attraction of the nucleus of the electron of the other getting stronger.
Read more about Potential energy here https://brainly.com/question/14427111
#SPJ1
Given that work is force x distance, and thatthe SI unit for force is Newton (Symbol N), work will have units that equal:
N
N/M
N.m
N.m2
N/m2
Answers
The units for work are given by force multiplied by distance. Since force is measured in Newtons (N) and distance is measured in meters (m), the units for work will be N.m (Newton-meters). Therefore, the answer is N.m.
The happy to help with your question. Given that work is calculated as force x distance, and the SI unit for force is Newton N, the units for work will be Work = Force x Distance Units N.m So, the correct answer is N.m Newton meters.The SI unit of work is the joule (J). It is defined as the work done by a force of one newton through a distance of one meter. One newton is equal to 1 kilogram meter per second squared. In plain English, 1 newton of force is the force required to accelerate an object with a mass of 1 kilogram 1 meter per second per second.
learn more about Newtons here
https://brainly.com/question/4128948
#SPJ11
What is the name of cells that have the ability to develop into different
kinds of cells?
Answers
Answer:
stem cells
Explanation:
hope it helps
pls i need help with this question
Answers
Answer:
option B is the correct level
Explanation:
PLEASE MARK ME AS A BRAINLIEST.
1.4 Name three properties of discrete Fourier transform (DFT)
Answers
To summarize, the three properties of DFT include periodicity, time-shift, and linearity. The DFT is an important mathematical tool for signal processing, and it is utilized to transform a discrete-time sequence from the time domain to the frequency domain.
The three properties of Discrete Fourier Transform (DFT) are as follows:Periodicity: The discrete Fourier transform has a periodicity that is equal to the length of the data sequence. For example, if the DFT of a sequence of N points is performed, the resulting transform will repeat itself after N points of frequency or spectral information have been computed.Time-shift: The discrete Fourier transform is sensitive to the time shift of a sequence. For instance, the DFT of a time-shifted signal is a complex exponential multiplied by the DFT of the original sequence.Linearity: The discrete Fourier transform satisfies the principle of superposition. It implies that if two separate inputs x(n) and y(n) are given, then the transform of the sum of these two inputs is equal to the sum of the transform of the two inputs.To summarize, the three properties of DFT include periodicity, time-shift, and linearity. The DFT is an important mathematical tool for signal processing, and it is utilized to transform a discrete-time sequence from the time domain to the frequency domain.
To know more about processing visit:
https://brainly.com/question/31815033
#SPJ11
how are waves reflected, absorbed, and transmitted through various materials
Answers
Answer:
Electromagnetic Radiation
Explanation:
When light shines on an object, it is reflected, absorbed, or transmitted through the object, depending on the object's material and the frequency (color) of the light. However, because light can travel through space, it cannot be a matter wave, like sound or water waves.
If the adenine (A) content of DNA is 33%, what is its guanine (G) content. 22% 33% 17% 67% 50%
Answers
If the adenine (A) content of DNA is 33% then the guanine content in this case would be 17%.
If the adenine content of DNA is 33%, the guanine content can be determined using Chargaff's rule. This rule states that in DNA, the amount of adenine is equal to the amount of thymine (T) and the amount of guanine is equal to the amount of cytosine (C). Therefore, if the adenine content is 33%, the thymine content is also 33%.
The total percentage of adenine and thymine combined is 66%. This means that the remaining 34% is composed of guanine and cytosine. Since the amount of guanine is equal to the amount of cytosine, the guanine content can be calculated by dividing the remaining 34% by 2.
To learn more about guanine click here https://brainly.com/question/14300958
#SPJ11
which has the largest atomic size selenium or oxygen?
Answers
Answer:
Selenium
Explanation:
selenium has 4 energy levels (think a 4 story building) while oxygen only has 2 (think 2 story building). which one is taller?
The sun's energy influences climate in different ways. For example, the latitudes at the equator receive more intense energy from the sun and therefore have warmer temperatures. How does the sun's energy MOST DIRECTLY influence precipitation in an area?
Answers
Answer:
The Sun's energy is transferred as both light and heat energy, that raises the temperature of an area receiving the Sunlight. The increased temperature results in the evaporation of water from surfaces and water bodies, such that the mass of water vapor rises up into the atmosphere and condenses when it gets away from the ground heat to the cooler and higher altitudes
When there is a situation of low pressure, the wind blows into the low pressure, where, in the equator, comprises of high temperature air which could contain considerable amount of vapor from the neighboring water bodies, resulting in the eventual rise of very moist air, up into the atmosphere, that condenses at low temperature at the high altitudes, accumulate into larger masses of liquid water, and fall as rain
Explanation:
Phytoplankton are a diverse group of unicellular organisms that are neither plants nor animals. Phytoplankton use sunlight, carbon dioxide, and nutrients to live and grow. Do you think phytoplankton are producers, consumers, or decomposers? Explain your reasoning.
Answers
Answer:
They are producers
Explanation:
Phytoplankton are producers and this is because they synthesis their own food and produce energy. They photosynthesized and convert carbondioxide and water in the presence of light energy and chlorophyll to carbohydrates and oxygen. They are producers because they produce their own food.
30. A solid sample contains only CaCO3, and MgCO3.
To completely react the CaCO3 and MgCO3
present in the sample. 42.00 cm of 0.088 M
HCI were required. The anhydrous chloride salts
from the reaction, obtained by evaporation of
the filtrate weighed 0.19 g. The mass of CaCO3
present in the solid sample is (C = 12,0 = 16,
Mg = 24, Ca = 40, CI = 35.5 )
(1) 0.05 g.
(2) 0.07 g
(3) 0.09 g
(4) 0.11g
(5) 0.12 g
Answers
Answer:
Explanation:
Step 1
The mass percent of MgCO3 in the original mixture is calculated as shown,
Step 2
Masses of MgCO3 and CaCO3 is 24g; Moles of carbon dioxide produced from Magnesium carbonate and Calcium carbonate are.
Step 3
Adding and equating the moles of Carbon dioxide results in,
Step 4
Percent mass of MgCO3 in the sample is calculated as,
9. The identity of an element can be determined on the basis of which one of the following?
A) The number of protons in an atom of the element.
B) The number of neutrons in an atom of the element.
C) The mass number of the element.
D) The atomic mass of the element.
Answers
Explanation
With the number of protons you can find the atomic number of the element leading to its identity
I need help with this
Answers
Answer:
26.00 units of Volume.....
what describes the electrons involved in metallic bonding? select one: a. transferred from one atom to another b. free to move between many atoms c. given to nonmetal atoms d. shared between two atoms
Answers
Option (a) is correct. The electrons involved in metallic bonding are transferred from one atom to another.
A metallic bond are formed from delocalized electrons which causes the effective nuclear charge on electrons on the cation to increase in effect making the size of the cation smaller. Metallic bonds are strong and require a great deal of energy to break metals have high melting and boiling points. metal's unique chemical and physical properties. In metallic bond, force that holds atoms together in a metallic substance. Such a solid consists of closely packed atoms. In most cases the outermost electron shell of each of the metal atoms overlaps with a large number of neighboring atoms. the valence electrons continually move from one atom to another and are not associated with any specific pair of atoms.
To learn more about Metallic bonding please visit:
https://brainly.com/question/19023138
#SPJ4
The atomic mass of seven atoms of antimony is ?
Answers
Answer:
Percent composition by element
Element Symbol Atomic Mass
Antimony Sb 121.760
Explanation:
what type of orbitals overlap to form the n-h bond in nh3?
Answers
The three hydrogen atoms in an \(NH_{3}\) hybridization will be centred around the nitrogen atom. Only the s orbitals of the hydrogen atoms overlap those sp3 orbitals.
An sp3 orbital in N crosses over with a s orbital in H to form the N-H bond. The second option is the proper response. This is because the nitrogen atom in \(NH_{3}\) has four electron domains that together create four sp3 orbitals.
An sp3 orbital in N crosses a s orbital in H to form the N-H bond.
Tetrahedral in shape, the nitrogen atom in \(NH_{3}\) contains four hybridised sp3 orbitals that house its four valence electrons. A hydrogen atom's valence electron is situated in a s orbital. The N-H bond is produced when the sp3 hybrid orbital of a nitrogen atom and the s orbital of a hydrogen atom overlap.
This overlap is due to the covalent bond that is created when nitrogen and hydrogen share electrons. Accurate orbital overlap that leads to the formation of the N-H bond in \(NH_{3}\)
To know more about nitrogen atom, click the below link
brainly.com/question/2396742
#SPJ4
be able to interpret chromatograms and determine which peak corresponds to particular components if given formulas/structures.
Answers
Interpreting chromatograms involves identifying and assigning peaks to specific components based on their retention times and characteristics. The use of formulas or structures can aid in determining which peak corresponds to a particular component in the chromatogram.
Chromatography is a technique used to separate and analyze components in a mixture. Chromatograms are graphical representations of the separation obtained through chromatography. To interpret chromatograms and determine which peak corresponds to specific components, several factors are considered.
Retention time is an important parameter in chromatography. It refers to the time taken for a component to travel through the chromatographic system from the injection point to the detector. Components with different physical and chemical properties exhibit different retention times. By comparing the retention times of known components or reference standards, it is possible to identify and assign peaks in the chromatogram to specific components.
The use of formulas or structures can be valuable in interpreting chromatograms. The molecular formula or structural formula of a component provides information about its composition and connectivity of atoms. By comparing the characteristics of peaks in the chromatogram with the expected retention times and properties of components, one can make educated guesses or confirm the identity of specific components in the mixture.
Overall, interpreting chromatograms and determining which peak corresponds to particular components involves considering retention times, comparing with reference standards, and utilizing knowledge of molecular formulas or structural information. These approaches enable the identification and assignment of peaks to specific components in the chromatogram, aiding in the analysis and understanding of complex mixtures.
To learn more about chromatograms Click Here: brainly.com/question/31827270
#SPJ11
Predict whether each of the following molecules is polar or nonpolar.
Answers
Answer
Polar: IF5, PCl3, IF
Non-polar: XeF6, SiCl4, CSe2
Explanation
XeF6 should be non-polar because its molecular geometry is octahedral.
SiCl4 is a non-polar compound because of its linear and symmetrical shape.
IF5 is polar in nature. The molecule has a bent-shaped geometrical structure because of lone pair and bond pair repulsion as per VSEPR theory due to which there occurs an imbalance in charge distribution across the molecule.
PCl3 is a polar molecule because of its tetrahedral geometrical shape having a lone pair on the Phosphorus atom and the difference between the electronegativity of Chlorine(3.16) and Phosphorus(2.19) atoms resulting in unequal sharing of electrons and developing positive and negative poles across the molecule making it a polar molecule.
IF is a polar covalent molecule. Fluorine is more electronegative than iodine due to which dipole moment is generated that makes the IF a polar molecule.
CSe2 is non-polar molecule. This is because the molecular geometry of CSe2 is linear with symmetric charge distribution on the central atom.
How dose nuclear energy can be transform form one form to another form
Answers
Explanation:
Nuclear energy is found in the nucleus of an atom holding nuclear materials in place.
When a nuclear decay or fusion occurs, the energy is released.
Most times, the nuclear energy is transformed into heat energy. The heat energy is used to do other forms of work that converts energy from one form to another. It can be converted to mechanical energy when water is boiled and used to drive turbines. It can be used in heating chambers. this and many more can lead to energy transformationTrue or false: Denaturation of an enzyme increases the rate at which it may catalyze a chemical reaction.
Answers
for each pair of compounds, pick the one with the higher boiling point. explain your reasoning. cs2 or cse2
Answers
Due to the cancellation of the two opposing dipoles within the molecule, CO2 is a nonpolar molecule. Consequently, the modest dispersion forces are its main intermolecular forces.
What are the forces between molecules?
Intermolecular forces are those that exist between molecules. It differs from an intramolecular force—that is, a force that exists within a molecule—because of this. A force within a molecule would therefore resemble a covalent bond. Intermolecular force is the name for the force that exists between molecules.
What are instances of intermolecular forces?
Intermolecular forces operate between molecules. In contrast, intramolecular pressures are produced by molecules themselves. Intermolecular forces are less powerful than intramolecular forces. Intermolecular forces include the London dispersion force, dipole-dipole interaction, ion-dipole interaction, and van der Waals.
To know more about intermolecular force visit:
https://brainly.com/question/9007693
#SPJ4
I need help with a law , I’m the president and need 3 laws and 3 goals explaining how these laws can make a better community etc.
Answers
In the below given ways we can give 3 laws and 3 goals that can make a better community. Law is a system of rules formed and enforced by social or political organizations.
What is law?Law is a system of rules formed and enforced by social or political organizations to regulate conduct, the precise definition of which has long been debated. It has been regarded as a science as well as an art form.
3 laws and 3 goals that can make a better community are:
When enforcing community rules, be fair.
Keep an eye out for anonymous complaints.
Keep community rules as well as terminology as minimal as possible.
Therefore, in the above given ways we can give 3 laws and 3 goals that can make a better community.
To learn more about law, here:
https://brainly.com/question/30149053
#SPJ1
how to deal with gender based violence as an individual
Answers
Answer:
Raise awareness of the dangers of harmful traditions. ...
Tackle violence against girls in school. ...
Challenge and speak out about violence in the home. ...
Transform attitudes towards harmful practices at multiple levels. ...
Listen to girls' experiences of violence - and their solutions.
Which statement describes the Richter scale?
It cannot account for fault movement during an earthquake.
It measures large earthquakes far from the seismograph.
It estimates the total energy released from an earthquake.
It increases in magnitude as amount of damage increases.
Answers
Answer:
It measures large earthquakes far from the seismograph.
Explanation:
It uses a seismograph to measure earthquakes far from the seismograph where seismic waves are used to determine the magnitude of an earthquake.
Answer: d. It increases in magnitude with an increase in size of seismic waves.
Explanation:
carbon in lead(iv) hydrogen carbonate oxidation number
Answers
Oxidation state of carbon is +1 in lead(iv) hydrogen carbonate.
Define Oxidation state
The potential charge an atom would have if every one of its links to other atoms were fully ionic is known as the oxidation state, also known as the oxidation number. It describes how much an atom has oxidized (lost electrons) in a chemical molecule. The oxidation state can theoretically be positive, negative, or zero.
The charge an atom would have if the compound were made up of ions is known as its oxidation number. In a neutral substance with atoms of only one element, the oxidation number of an atom is zero. As a result, the oxidation number of the atoms in O2, O3, P4, S8, and aluminium metal is 0.
Pb(HCO3)4?
HCO3^4-
+1 + x + -6 ⇒ -4
x ⇒ -4 +6 -1
x ⇒ +1
So oxidation state of carbon is +1
Complete question:
Give oxidation number of carbon in lead(iv) hydrogen carbonate
To learn more about Oxidation state use:
https://brainly.com/question/25551544
#SPJ4
Solution of 0. 10 M silver nitrate, AgNO3, is added to a solution of 0. 10 M lithium hydroxide, LiOH. The Ksp of silver hydroxide is 2. 0 x 10-8. What happens to the pH as the silver nitrate is added, AgNO3
Answers
The pH remains unchanged as silver nitrate is added because the reaction between silver nitrate and lithium hydroxide does not involve the release or consumption of protons (H+ ions).
When silver nitrate (AgNO3) is added to lithium hydroxide (LiOH), a precipitation reaction occurs, forming silver hydroxide (AgOH) and lithium nitrate (LiNO3). The balanced equation for the reaction is:
2AgNO3 + 2LiOH -> Ag2OH + 2LiNO3
Since the Ksp (solubility product constant) of silver hydroxide is given as 2.0 x 10^-8, it indicates that silver hydroxide is only slightly soluble in water. As a result, most of the silver hydroxide formed will precipitate out of solution.
The pH of a solution is determined by the concentration of H+ ions. In this reaction, there is no consumption or production of H+ ions. Lithium hydroxide is a strong base that completely dissociates in water, but it does not affect the pH significantly as the concentration is low (0.10 M). Silver nitrate is a neutral salt, so it also does not contribute to any pH changes.
Therefore, the addition of silver nitrate does not have any significant impact on the pH of the solution. The pH remains unchanged throughout the reaction.
learn more about nitrate here:
https://brainly.com/question/5346392
#SPJ11
5. What is a habitat?
a) An area of human development
b) A protected area for endangered species
c) The natural home or environment of an animal, plant, or other organism
d) An area where no species live
It's for science
Answers
Answer:
c) The natural home or environment of an animal, plant, or other organism
Explanation:
Please note that in order to post questions in Science, you must post in Science section, but not in History. You are asking a wrong question in the wrong section.
Thank You! Please Mark Brainliest! :)
a habitat is a place for any organism to live in.
a zoo is a habitat, the woods are a habitat, houses are a habitat.