we dissolve 2.45 g of sugar in 200.0 g water. what is the mass percent of sugar in the solution? we dissolve 2.45 g of sugar in 200.0 g water. what is the mass percent of sugar in the solution? 1.21% 123% 1.23% 2.42% none of the above
Answers
When 2.45 grams of sugar are dissolved in 200.0 grams of water, the mass percentage of sugar in the solution is 1.21%.
Mass Percent-
The concentration of chemical substances in solutions can be stated in a variety of ways. While the molar concentration refers to the quantity of moles of the solute in the solution, the mass concentration refers to the mass of the solute per unit volume of the solution. The mass percent of the solute in the solution is expressed as a percentage. While molar and mass concentrations have units of measurement, mass percent has none.
The total mass is 202.45 gms when 2.45 grams of sugar are dissolved in 200.0 grams of water. According to the definition and idea of the mass percent, such a solution would have a sugar content of (2.45 /202.45) 100 = 1.21% sugar.
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Related Questions
Which statement is true?
Within a human, nearly every cell is identical with a small
number of exceptions.
Within a human, all cells are identical.
All cells share a few features in common, but within a
human there are many types of cells.
I WILL MARK AS BRAINLIEST
Answers
Answer:
All cells share a few features in common, but within a
human there are many types of cells.
Explanation:
Your body has many different kinds of cells. Though they might look different under a microscope, most cells have chemical and structural features in common.
VO2max (ml kg−1⋅min−1)=3.5+483/1.5mi time in minutes - Review GETP 10 page 86 1. Calculate the estimated VO2 Max for a 1.5 mile run/walk field test performed by a 27 year-old man with the following results: 1.5 mile run time: 13 minutes VO2 Max: ml⋅kg−1⋅min−1 Multi-Stage Estimation of VO2Max - b=(SM2−SM1)/(HR2−HR1) - VO2Max=SM2+b(HRmax−HR2) - SM=VO2 of submaximal workload [use ACSM equations] Revicw an example of this equation on page 102 in your Advanced Fitness textbook. 1. Calculate the estimated VO2 Max for a 40 -year old woman with the following VO2 and heart rate values for two stages of a submaximal test.
Stage 1:
Stage 2:
VO2: 24.5ml/kg/min
VO2: 35.7ml/kg/min
HR: 145bpm
HR: 162bpm
Power [kgm/min]= Force [kg]× Flywheel Distance × RPM "Note: Convert kgm/min to Watts by dividing by 6. Review an example of this equation on page 95 in your Advanced Fitness textbook. 1. Calculate the kgm/min and Watts produced when cycling against 4 kg of resistance with a 6 m/ revolution flywheel at a pedaling rate of 60rpm. Kgm/min : Watts: ACSM Cycling/Leg Ergometry VO2=(Work[kgm/min]/ Mass [kg]×1.8)+3.5+3.5 Review an example of this equation on page 97 in your Advanced Fitness textbook.
Answers
When cycling against 4 kg of resistance with a 6 m/revolution flywheel at a pedaling rate of 60rpm, the power produced is approximately 1440 kgm/min or 240 Watts.
VO2max refers to the maximum volume of oxygen that a person can consume per kilogram of body weight per minute. It is commonly used as a measure of cardiorespiratory fitness. The equation you provided is one method to estimate VO2max based on a 1.5-mile run/walk field test and heart rate data.
To calculate the estimated VO2max for the 27-year-old man who completed the 1.5-mile run in 13 minutes, we need to substitute the given values into the equation:
VO2max (ml kg−1⋅min−1) = 3.5 + 483 / (1.5 mi time in minutes)
Substituting the values:
VO2max = 3.5 + 483 / 13
Simplifying the equation:
VO2max = 3.5 + 37.15
Calculating the sum:
VO2max ≈ 40.65 ml kg−1⋅min−1
Therefore, the estimated VO2max for the 27-year-old man is approximately 40.65 ml kg−1⋅min−1.
Regarding the second question, we can use the given VO2 and heart rate values for two stages of a submaximal test to estimate the VO2max for the 40-year-old woman. To do this, we need to use the formula:
b=(SM2−SM1)/(HR2−HR1)
VO2Max=SM2+b(HRmax−HR2)
Let's calculate the values step by step:
Substituting the given values:
b = (35.7 - 24.5) / (162 - 145)
Calculating the value of b:
b = 11.2 / 17
Substituting the values into the second part of the equation:
VO2Max = 35.7 + (11.2 / 17) * (HRmax - HR2)
To proceed further, we need the value of HRmax. Since it's not given in the question, we cannot provide an accurate estimation for the VO2max of the 40-year-old woman. I apologize for any inconvenience.
For the third question, we can calculate the kgm/min and Watts produced when cycling against 4 kg of resistance with a 6 m/revolution flywheel at a pedaling rate of 60rpm.
To calculate kgm/min:
Power [kgm/min] = Force [kg] × Flywheel Distance × RPM
Power [kgm/min] = 4 kg × 6 m × 60 rpm
Simplifying the equation:
Power [kgm/min] = 1440 kgm/min
To convert kgm/min to Watts, we divide by 6:
Watts = Power [kgm/min] / 6
Watts = 1440 kgm/min / 6
Calculating the value:
Watts ≈ 240 W
Therefore, when cycling against 4 kg of resistance with a 6 m/revolution flywheel at a pedaling rate of 60rpm, the power produced is approximately 1440 kgm/min or 240 Watts.
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5 pts Question 5 In order to determine the entropy of the dissolving process, we measure what thermodynamic value using calorimetry? A. Free EnergyB. Enthalpy C. Temperature
Answers
Enthalpy is measured using calorimetry to determine the entropy of the dissolving process. (B)
In calorimetry, the enthalpy change (ΔH) of a system is measured as the heat transfer that occurs when a substance dissolves. The entropy of a substance can be calculated from the enthalpy change using the equation ΔS = ΔH/T, where T is the temperature.
Free energy (G) and temperature are not directly related to the entropy of a substance, although they are both important thermodynamic quantities. The free energy is a measure of the maximum amount of useful work that can be extracted from a system, and temperature is a measure of the average kinetic energy of the particles in a system.
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does anyone know how to do this??????
Answers
Answer:
you have to answer about what Emmy Noether was known for and how she accomplished her goal! For example Dr. Martin Luther King was known for his peaceful protests and his famous "I Have a Dream". He accomplished this goal by never giving up and sticking to his morals! I hope this helped!! ♡♡ (BTW love your profile picture)
2. If an eagle is flying at a constant speed, it is accelerating. True or
False
Answers
Answer:
False
Explanation:
Answer:
:0
Explanation:
Write the complete electron configurations for
(i) copper
(ii) xenon
Answers
Answer:
hello to get it from you and your favouri love your pic
What conclusion did Rutherford draw from his gold-foil experiment? A. Almost all the mass of an atom is concentrated in the nucleus. B. Atoms contain three different subatomic particles. C. Electrons are tiny particles that carry a negative charge. D. The mass of a proton is nearly equal to the mass of a neutron.
Answers
Answer:
A. Almost all of the mass is concentrated in the nucleus.
Explanation:
Because when he shot the alpha particles towards the atoms, most passed through (which meant atom is mostly empty space), but some bounced back and such (which meant mass is concentrated in the nucleus.)
The reason they bounced is because alpha particles are postive and nucleus is positive as well, and we know positives don't attract, rather they repel thus they bounced.
carbon dioxide fire extinguishers are designed for which types of fuels
Answers
Answer:
Carbon Dioxide is a non-flammable gas that extinguishes fire by displacing oxygen
CO2s are designed for Class B and C (flammable liquid and electrical) fires only.
Which compound is impossible?
A. Zns
B. Na2O
C. Ca3P2
D.LiCl2
Answers
Explanation:
what minimum mass of hcl in grams would you need to dissolve a 2.8 g iron bar on a padlock?
Answers
The minimum mass of HCl in grams needed to dissolve a 2.8 g iron bar on a padlock is 3.65 g. This is because the molar ratio of HCl to Fe in the reaction is 2:1, and the molar mass of HCl is 36.5 g/mol.
The reaction for the dissolution of iron in HCl is as follows:
Fe (s) + 2HCl (aq) → FeCl2 (aq) + H2 (g)
As you can see, for every mole of Fe that is dissolved, 2 moles of HCl are required. Therefore, if we have 2.8 g of Fe, we need 2.8 g / 55.85 g/mol = 0.05 moles of Fe. Since the molar ratio of HCl to Fe is 2:1, we need 0.05 moles * 2 = 0.1 moles of HCl. The mass of 0.1 moles of HCl is 0.1 mol * 36.5 g/mol = 3.65 g.
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Which kind of sampling system uses a pump to draw air over a sorbent material?
Active
Passive
Dynamic
Constant-pressure
Answers
The type of sampling system that uses a pump to draw air over a sorbent material is an active sampling system.
Active sampling systems use a pump to draw air over a sorbent material in order to collect a sample. The pump creates a vacuum to draw air from the environment and then passes it over a sorbent material such as activated charcoal or silica gel. The sorbent material collects particles, gases and vapors from the air, which can then be analyzed. This type of system is ideal for measuring short-term, intermittent exposure to pollutants and is often used to monitor workplace air quality.
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If the mass of an object is 2 g and the volume is
4 mL, will the object sink or float in water?
a.Float
b. Sink
Answers
Answer:
The answer is option AExplanation:
To find out if the object sink or float in water we must first find the density of the object
\(density = \frac{mass}{volume} \\ \)
From the question
mass of object = 2 g
volume = 4 mL
The density is
\(density = \frac{2}{4} = \frac{1}{2} \)
We have the answer as
0.5 g/mL
The object will float on water since it's density is less than that of water which is
1.0 g/mL
Hope this helps you
Column A
1
Integumentary
Muscular
2
3
Skeletal
4.
5.
6.
7
Circulatory/Cardiovascular
Respiratory
Nervous
Lymphatic/immune
Urinary/Excretory
Endocrine
Reproductive
Digestive
8
Column B
a, Breaks down food into nutrients for the
body
b. Produces hormones and cells to make
offspring
C. Gives body support and shape, movement,
and makes red blood cells
d. Sends messages throughout the body
e, Glands that produce hormones
f. Makes white blood cells, protects body
against invaders
g. Transports blood, nutrients, and waste
throughout the body
h. Protects body, regulates temperature,
provides sense of touch
i. Filters and removes waste from the blood
j. Provides movement for the body, attach to
bones
k. Supplies the blood with oxygen, removes
carbon dioxide waste from the body
9
10
11
Answers
Explanation:
carbon dioxide waste from the body, is a result of
cellular metabolism. Through exhalation, a body gets rid of CO2. (the lungs), are most important in removal of co2.
10) cellular transport through the lungs.
11) o2 (inhalation) lungs, oxygenate cells to deliver o2 through the bloodstream to perform proper function. plus the pulmonary arteries renew and release CO2 from the body..
I NEED HELP ASAP!!!!!!!!!!!!!!
Answers
Answer:
A
Explanation:
N2 is nonpolar and has a triple covalent bond
1s2 2s2 2p6 3s2 3p6 4s1 3d5 is the electronic configuration of
a. Cr2+
b. Cu
c. Cu2+
d. Cr
Answers
1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵ is the electronic configuration of Cr. the correct answer is D.
There are 24 electrons in all, according to the electron arrangement. A neutral atom will contain 24 protons if it has 24 electrons. The element is determined by its proton count. Chromium, symbol Cr, is the 24th element.
Since Cr contains 24 protons and the +2 charge would result in the nucleus having 26 protons, Cr²⁺ is invalid. Cu is made up of 29 protons. The copper would be Cu⁵⁺ as there are only 24 electrons. Cu²⁺ was rejected for the same reason.
Therefore, 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵ is the electronic configuration of Cr.
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Consider the following balanced equation:H₂SO4 (aq) + 2LiOH (aq) --> 2 H₂O (1) + Li₂SO4 (aq)A 33.98 mL sample of H₂SO4 is completely titrated with 18.19 mL of 1.35 M LIOH. What is the molarity of the H₂SO4?
Answers
1) Write the chemical equation.
\(H_2SO_{4(aq)}+2LiOH\rightarrow2H_2O+Li_2SO_4\)2) List the known and unknown quantities.
Sample: H2SO4
Volume: 33.98 mL.
Concentration: unknown
Titrant: LiOH
Volume: 18.19 mL = 0.01819
Concentration: 1.35 M
3) Find moles of LiOH
3.1- Set the equation
\(M=\frac{moles\text{ }of\text{ }solute}{liters\text{ }of\text{ }solution}\)3.2- Plug in the values
\(1.35\text{ }M=\frac{moles\text{ }of\text{ }solute}{0.01819\text{ }L}\)\(moles\text{ }of\text{ }solute=1.35\text{ }M*0.01819\text{ }L\)\(moles\text{ }LiOH=0.0245565\)The number of moles of LiOH in the reaction is 0.0246.
4) Find moles of H2SO4
The molar ratio between H2SO4 and LiOH is 1 mol H2SO4: 2 mol LiOH.
\(mol\text{ }H_2SO_4=0.0246\text{ }mol\text{ }LiOH*\frac{1\text{ }mol\text{ }H_2SO_4}{2\text{ }mol\text{ }LiOH}\)\(mol\text{ }H_2SO_4=0.01228\text{ }mol\text{ }H_2SO_4\)5) Molarity of H2SO4
Sample: H2SO4
Moles: 0.01228
Volume: 33.98 mL.
5.1- Convert mL to L.
1 L = 1000 mL
\(L=33.98\text{ }mL*\frac{1\text{ }L}{1000\text{ }mL}=0.03398\text{ }L\)5.2- Set the equation to find molarity.
\(M=\frac{moles\text{ }of\text{ }solute}{liters\text{ }of\text{ }solution}\)\(M=\frac{0.01228\text{ }mol\text{ }H_2SO_4}{0.03398\text{ }L}\)\(M=0.3614\text{ }M\)The molarity of the sample is 0.3614 M H2SO4.
Submit a picture of the answer to this question: Draw an atom. State the name of all 3 subatomic particles, label them on the atom AND state whether it is positively charged, negatively charged, or ne
Answers
The three subatomic particles that make up an atom are protons, neutrons, and electrons. Atoms are neutrally charged because the number of protons and electrons are equal. However, atoms can lose or gain electrons, which makes them positively or negatively charged ions.
An atom is the smallest unit of an element that still has the properties of that element. It is made up of three subatomic particles: protons, neutrons, and electrons.
Protons are positively charged particles that are found in the nucleus of the atom.
Neutrons are uncharged particles that are also found in the nucleus of the atom.
Electrons are negatively charged particles that orbit the nucleus of the atom.
To draw an atom, follow these steps:
Draw a circle to represent the nucleus of the atom.Inside the circle, draw two smaller circles side by side to represent protons and neutrons. Label one circle "P+" for proton and the other "N" for neutron.Draw several smaller circles around the nucleus to represent electrons. Label each circle "e-" for electron.To indicate the charge of each subatomic particle, label the protons as "+" for a positive charge, label the electrons as "-" for a negative charge, and label the neutrons as "0" for a neutral charge.Make sure your diagram is clear and all subatomic particles are labeled correctly and accurately representing the atom.Thus, the three subatomic particles that make up an atom are protons, neutrons, and electrons. Atoms are neutrally charged because the number of protons and electrons are equal. However, atoms can lose or gain electrons, which makes them positively or negatively charged ions.
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How many mL of 0.608 M HCl are needed to dissolve 9.17 g of MgCO3?
2HCl(aq) + MgCO3(s) = MgCl2(aq) + H2O(l) + CO2(g)
Answers
The term mole concept is used here to determine the volume of HCl. The volume of HCl in 0.608 M HCl is 357 mL.
What is a mole?One mole of a substance is defined as that quantity of it which contains as many entities as there are atoms exactly in 12 g of carbon - 12. The formula used to calculate the number of moles is:
Number of moles (n) = Given mass / Molar mass
The molar mass of MgCO₃ = 84.31 g/mol
n = 9.17 / 84.31
= 0.1087 mole
0.1087 mol MgCO₃ × 2 mol HCl / 1 mol MgCO₃ = 0.2174 mol HCl
Molarity = mol / L
L = mol / Molarity
= 0.2174 / 0.608
= 0.357 L
0.357 L × 1000 mL / 1 L = 357 mL.
Thus the volume of HCl is 357 mL.
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A customer is traveling to a branch office static ip.
Answers
Answer:
A customer is travelling to a branch office, and the network administrator provides her with a static IP address for her laptop
Explanation:
I hope this helps!!!...
Brainliest please???
A sample of nitrogen gas contains 9.46x10^23 atoms of nitrogen. How much nitrogen is expressed in grams? round your answer to the nearest whole number.
Answers
We know
\(\boxed{\star{\sf No\;of\:atoms=No\:of\: moles\times Avagadro's\: number}}\)
\(\\ \rm\Rrightarrow No\:of\;moles=\dfrac{No\:of\:atoms}{Avagadro's\:no}\)
\(\\ \rm\Rrightarrow No\:of\:moles =\dfrac{9.46\times 10^{23}}{6.022\times 10^{23}}\)
\(\\ \rm\Rrightarrow No\:of\:moles=1.6mol\)
Again
\(\boxed{\star{\sf Mass=Molar\:mass\times No\:of\:moles}}\)
\(\\ \rm\Rrightarrow Mass=1.6(14)\)
\(\\ \rm\Rrightarrow Mass=22.4g\)
24. A hypothesis cannot be considered a
a. possible explanation,
b. preliminary conclusion.
c. good guess.
d. concept
Answers
Answer:
B. Preliminary conclusion
Explanation:
The answer is B because a hypothesis is really an educated guess you make in regards to a question, usually before performing an experiment, so it can't be a preliminary conclusion because you don't really have any solid evidence to support your hypothesis, you only have background information. You will either be able/not be able to support your hypothesis after your expirement has concluded.
why carbon nanotubes are ao strong?
Answers
The half-life of a first-order reaction is 30.0 seconds. what is the rate constant k for the reaction?
Answers
The rate constant of the first-order half-life reaction is 0.023 / sec or ln(2)/30 sec.
The formula for a first-order half-life reaction is t = (1/k) [ ln (initial concentration/final concentration)].
For determining the rate constant k, we can easily substitute the given t=30.0s to the formula. As for the initial and final concentration, we will be using 1/2 of the initial concentration as the final concentration. With this, the ratio of initial and final concentration would be equal to 1/(1/2) or 2. The exact value of the concentration is not important for this problem.
t= (1/k) * ln(2)
30.0 seconds = (1/k) * ln(2)
k = (ln (2)) / 30 seconds
k = ln (2) / 30 or 0.023/sec
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the overall take away of an experiment’s results is the______. A. hypothesis B. introduction C. conclusion
Answers
Answer:
conclusion
Explanation:
it can't be a hypothesis since tests are carried out to verify so it is not a theory
an introduction to an experiment only gives the basis of what we are investigating therefore nothing has been proven and the question is still unanswered
The overall takeaway of an experiment’s results is the conclusion. Hence, option C is correct.
What is a hypothesis?A hypothesis is a testable statement about the relationship between two or more variables or a proposed explanation for some observed experiment.
The overall takeaway of an experiment’s results can't be a hypothesis since tests are carried out to verify so it is not a theory
An experiment only gives an idea about the investigation therefore nothing has been proven and the question is still unanswered.
Hence, the overall takeaway of an experiment’s results is the conclusion.
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which statement describes the behavior of a strong acid in aqueous solution? (select all that apply.) multiple select question. the keq of the reaction will be greater than 1. it dissociates to a small extent. it dissociates completely. the keq of the reaction will be less than 1.
Answers
The behavior of a strong acid is that it it dissociates completely in aqueous solution, while weak acids partially dissociate in aqueous solution.
WHAT AN ACID IS:
Acids are chemicals that, when dissolved in water, split into protons (H+). Acids have a sour taste and have the capacity to color blue litmus paper red.
An acid can be classified as either weak or powerful, though. When in an aqueous solution, a strong acid entirely dissociates into hydrogen ions.
Strong acid is an acid that totally separates into ions in water.
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help, also brainly dont be mean and delete this.
if you steal my points, please dont i need genuine help
Answers
Answer:
I dont understand what is the question you need help on-
Explanation:
PLEASEEE HELPP ! WILL MARK BRAINLIEST !
Why do you think oil and water produce different cooking results? *HINT: Think about the nature of the molecules in the oil and water and how this affects the way they are used for cooking.
Answers
Answer:
The temperature of the cooking liquid. Oil will generally be a lot hotter and will cook faster, resulting in different texture. Well it's because the highest temperature possible in cooking in water is 100 C. With cooking in oil temperature can reach to as high as 230 - 240 C.
HOPE IT HELPS!!!!!What's the meaning of love?
Answers
Answer: Love is when you feel like you can touch the sky when your around that person, when your at your best self or that person and when you put their needs before yours because your needs just don't matter. When you feel like you can't stop thinking about that person or you can stop smiling when you think of them. Its when you feel this warm, safe feeling when your around them. And if you really love them then my answer should be true for you.
Explanation:
because iv'e felt and have been in love before....
Answer:
Love is an intense, deep affection for another person. Love also means to feel this intense affection for someone. Love can also refer to a strong like for something or to like something a lot. Love has many other senses both as a verb and a noun
which of the following best describes the formation of the bond shown in figure 1 ? responses an ionic bond is formed between a carbon atom of one amino acid and the nitrogen atom of the other amino acid. an ionic bond is formed between a carbon atom of one amino acid and the nitrogen atom of the other amino acid. an ionic bond is formed when the negative charge of an oh oh group is balanced by the positive charge of a hydrogen ion. an ionic bond is formed when the negative charge of an o h group is balanced by the positive charge of a hydrogen ion. a covalent bond is formed between a carbon atom and a nitrogen atom along with the formation of h2o h 2 o . a covalent bond is formed between a carbon atom and a nitrogen atom along with the formation of h 2 o . a covalent bond is formed that replaces the hydrogen bond between the oh oh group and the h
Answers
Together with the creation of H2O, a covalent bond is created between a carbon and a nitrogen atom.
When two amino acids come together, a peptide bond is created.
It entails the release of water together with the fusion of the carboxyl group of one amino acid (COOH) with the amino group of another amino acid (NH2) (H2O).
Because a carbon atom (C) and a nitrogen atom (N) share electrons, a peptide bond is a sort of covalent link (N).
Hence, along with the creation of H2O, the reaction depicted in the graphic attached also results in the development of a covalent bond between a carbon atom and a nitrogen atom.
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K + Li2O what is the product
Answers
Answer:
2K + Li2O → 2Li + K2O