Answers
Based on the volume and concentration of the solutions given;
Molarity of KBrO3 = 0.02 MMolarity of Na2S2O3 = 0.05 MMolarity of KBrO3 = 0.02 MMolarity of Na2S2O3 = 0.05 MWhat is molarity?Molarity of a solution is the concentration of the solution given as number of moles of solute in a given volume of solution in litres.
Molarity = number of moles/volume in LitresThe molarity of each of the solutes in the solution are as follows:
Flask A:
Total volume = 15 mL = 0.015 L
moles of KI = 0.01 M × 0.005 L = 0.00005 moles
moles of Na2S2O3 = 0.001 M × 0.005 = 0.000005 moles
Molarity of KI = 0.00005 moles/0.015 L
Molarity of KI = 0.0033 M
Molarity of Na2S2O3 = 0.000005 moles/0.015 L
Molarity of Na2S2O3 = 0.00033 M
Flask B:
Total volume = 10 mL = 0.001 L
moles of KBrO3 = 0.04 M × 0.005 L = 0.0002 moles
moles of HCl = 0.1 M × 0.005 = 0.0005 moles
Molarity of KBrO3 = 0.0002 moles/0.01 L
Molarity of KBrO3 = 0.02 M
Molarity of Na2S2O3 = 0.0005 moles/0.01 L Molarity of Na2S2O3 = 0.05 M
Learn more about molarity at: https://brainly.com/question/17138838
Related Questions
PLEASE HELP FAST!!!!
fill in the coefficients for the reactants and predict the products (with coefficients and formulas) for the following double replacement reaction: _MgS+_CaSO4>_Product1+_Product2
Coefficient for MgS:
Coefficient for CaSO4:
Product 1:
Product 2:
Answers
let's see, oh I get it let me give you a hint. You need to do something with _Mgs+_ and _CaSO4>_ in order to get product 1 and product 2
What is the relationship between covalent bonding and the chemical and physical properties of the molecules
Answers
Answer:
Compounds that contain covalent bonds exhibit different physical properties than ionic compounds. Because the attraction between molecules, which are electrically neutral, is weaker than that between electrically charged ions, covalent compounds generally have much lower melting and boiling points than ionic compounds.DESCRIBE THE FINAL TEMPERATURE AFTER DIFFUSION
Answers
Answer:
Simple Diffusion
In basic terms, diffusion can be defined as the process by which particles spread out. This is generally from an area where they are high in concentration to an area where they are in a lower concentration. This can be understood by thinking of a pan with onions cooking in it. The smell given off by the onions is very concentrated in the top of the pan, above the cooking onions. The molecules, therefore, move into an area when they are in lower concentration, such as the surrounding air. Eventually, the smell spreads throughout the kitchen or even the entire home.
Mixing Diffusion
If two different gases or liquids are close to each other, the process of diffusion causes them to mix together. Imagine two gases separated by a partition. The free-moving gas molecules bounce off the central partition as they whirl around in their container. If the partition is removed, the gases mix as the molecules move around. This is related to the second law of thermodynamics, which states that in a closed system, all things tend toward entropy. “Entropy,” for this purpose, can simply be defined as disorder; therefore, unmixed particles in a closed system tend to mix, or diffuse.
For each question, determine the type of reaction, then balance the reaction.
Problems 1-4: 2 points each
1.
Al +
H, Te →
Al, Tez +
H
a. Type:
2.
_C12H26 +
O2 →
H2O +
CO2
a. Type:
3.
Au +
CuSO4 →
Cu +
AuSO4
a. Type:
4.
H₂O →
H2 +
a. Type:
Answers
Answer:
i know the answer but i dont have time bro
What mass will 33.6 L of chlorine gas (Cl2) have at STP?
35 g
53 g
71 g
106 g
Answers
106g is the answer to ur question
How many moles are there in 3.612 x 1024 molecules of CaO?
Answers
The number of moles in 3.612 x 10²⁴ molecules of CaO is 6 moles.
Number of moles in the molecules
The number of moles in 3.612 x 10²⁴ molecules of CaO is calculated as follows;
6.02 x 10²³ molecules = 1 mole
3.612 x 10²⁴ molecules = ?
= (3.612 x 10²⁴ ) / (6.02 x 10²³ )
= 6 moles
Thus, the number of moles in 3.612 x 10²⁴ molecules of CaO is 6 moles.
Learn more about number of moles here: https://brainly.com/question/15356425
What is the volume (in liters) of 1.51 x10^24 molecules of Argon gas at STP?
Answers
Answer:
Explanation:
The molar volume of a gas at STP (Standard Temperature and Pressure), which is equal to 22.4 liters.
There are 6.02x10^23 molecules in 1 mole of Argon.
So for 1.51x10^24 molecules of Argon, the volume at STP should be
(1.51x10^24 / (6.02x10^23)) * 22.4
= 56.19 liters
Moles of Argon:-
No of molecules/Avagadro's constant1.51×10^24/6.022×10^23=2.5molNow
1mol of gas contains 22.4L2.5mol contains:-[tex]\\ \rm\Rrightarrow 2.5(22.4)=56L[/tex]
20. Given the reaction at equilibrium:
2 502(8) + O2(g) + 2 SO,(8)
+
As the pressure is increased at constant temperature, the
number of moles of S03(g) produced will
1) decrease
3) remain the same
2) increase
Answers
If pressure increases, so will moles.
The answer is 2) Increase.
1. Electricity is the energy that alters physical state.
True
False
Answers
Use the given relationship to calculate the ionization energy of a thallium atom, given that radiation of 58.4 nm produces electrons with a speed of 2310 km⋅s−1. Note that 1 J=1 kg⋅m2⋅s−2.
Answers
The ionization energy is 1 × 10^-18 J
What is ionization energy?The ionization energy is the energy required to remove an electron from an atom.
We have the following information;
wavelength of the photon = 58.4 nm
Speed of the electron = 2310 × 10^3 m/s
Since;
hv = I + 1/2mv^2
v = c/λ
hc/λ = I + 1/2mv^2
I = hc/λ - 1/2mv^2
I = (6.6 × 10^-34 × 3 × 10^8/58.4 × 10^-9) - (1/2 × 9.11 × 10^-31 × (2310 × 10^3)^2)
I = 1 × 10^-18 J
Learn more about ionization energy: https://brainly.com/question/16243729
When 22.0 g NaCl and 21.0 g H, SO4 are mixed and react according to the equation below.
2 NaCl + H2SO4 → Na2SO4 + 2 HCI
how much Na2SO4 was actually made?
O 26.5 g Na2SO4
O 30.4 g Na2SO4
O 53.5 g Na2SO4
O 14.4 g Na2SO4
Answers
Taking into account the reaction stoichiometry and limiting reagent, 26.72 grams of Na₂SO₄ are formed when 22 grams of NaOH reacts with 21 grams of H₂SO₄.
Reaction stoichiometryIn first place, the balanced reaction is:
2 NaCl + H₂SO₄ → Na₂SO₄ + 2 HCI
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
NaCl: 2 moles H₂SO₄: 1 mole Na₂SO₄: 1 mole HCI: 2 molesThe molar mass of the compounds is:
NaCl: 58.45 g/mole H₂SO₄: 98 g/moleNa₂SO₄: 142 g/moleHCI: 36.45 g/moleThen, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:
NaCl: 2 moles ×58.45 g/mole= 116.9 grams
H₂SO₄: 1 mole ×98 g/mole= 98 grams
Na₂SO₄: 1 mole ×142 g/mole= 142 grams
HCI: 2 moles ×36.45 g/mole= 72.9 grams
Limiting reagentThe limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.
Limiting reagent in this reactionTo determine the limiting reagent, it is possible to use a simple rule of three as follows: if by stoichiometry 116.2 grams of NaCl reacts with 98 grams of H₂SO₄, 22 grams of NaCl reacts with how much moles of H₂SO₄?
[tex]mass of H_{2} SO_{4} =\frac{22 grams of NaClx98 grams of H_{2} SO_{4} }{116.2 grams of NaCl}[/tex]
mass of H₂SO₄= 18.55 grams
But 18.55 grams of H₂SO₄ are not available, 21 grams are available. Since you have less moles than you need to react with 22 grams of NaCl, H₂SO₄ will be the limiting reagent.
Mass of Na₂SO₄ producedThe following rules of three can be applied, considering the limiting reagent: if by reaction stoichiometry 116.9 grams of NaCl form 142 grams of Na₂SO₄, 22 grams of NaCl form how much mass of Na₂SO₄?
[tex]mass of Na_{2}S O_{4} =\frac{22 grams of NaClx142 grams of Na_{2}S O_{4}}{116.9 grams of NaCl}[/tex]
mass of Na₂SO₄= 26.72 grams
Then, 26.72 grams of Na₂SO₄ are formed when 22 grams of NaOH reacts with 21 grams of H₂SO₄. The correct answer is first option.
Learn more about the reaction stoichiometry:
brainly.com/question/24741074
brainly.com/question/24653699
How might the puppy’s new environment affect its growth and development?
Answers
Answer:
New environments for puppies may make them excited, fearful, aggressive, or confused.
Explanation:
"When your dog first experiences a new location or environment, there's no way of knowing how they'll react. New sights, sounds, and smells could make them fearful, aggressive, or over-excited, but with the proper training and introduction, most dogs will quickly adapt and start taking every new location in stride." - Excerpt from *Puppy training textbook*
New environments are also a good thing in puppy growth, to teach them how to learn and adapt to new surroundings.
Hope this helps :)
State whether the following ionic solids are soluble or insoluble when placed into water.
Answers
Answer:
NaNO3 - soluble in water
NH4Br - soluble in water
BaSO4 - insoluble in water
write name of a plant having aquatic habitat
Answers
Answer:
Cattail
Explanation:
Cattail is the plant which have aquatic habitat.
What is aquatic habitat?An area with water that directly supports a particular species, population, as well as the community is referred to as an aquatic habitat.
What is Cattail?Cattails were also perennial upright plants that grow from rhizomes which creep. The long, tapering petals seem to be slightly spongy and even have smooth borders.
Cattail is a plant which has aquatic habitat.
To know more about cattail
https://brainly.com/question/15224375
#SPJ3
At standard temperature and pressure. 0.500 mole of xenon gas occupies
Answers
Answer:
0.500 mole of Xe (g) occupies 11.2 L at STP.
General Formulas and Concepts:
Gas Laws
STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 KStoichiometry
Mole ratioDimensional AnalysisExplanation:
Step 1: Define
Identify.
0.500 mole Xe (g)
Step 2: Convert
[DA] Set up: [tex]\displaystyle 0.500 \ \text{mole Xe} \bigg( \frac{22.4 \ \text{L Xe}}{1 \ \text{mole Xe}} \bigg)[/tex][DA] Evaluate: [tex]\displaystyle 0.500 \ \text{mole Xe} \bigg( \frac{22.4 \ \text{L Xe}}{1 \ \text{mole Xe}} \bigg) = 11.2 \ \text{L Xe}[/tex]Topic: AP Chemistry
Unit: Stoichiometry
Q is a solution of HCl containing 0.12 mol.dm^-3. P is a solution of Na2CO3 of unknown concentration. Solution Q was titrated against 25.0cm^3 portions of solution P and an average titre of 26.25cm^3 was obtained. Calculate the concentration of solution P in mol.dm^-3. Na2CO3 +2HCl = 2NaCl +CO2 + H2O.
Answers
In which orbital below would an electron (on average) be farthest from the nucleus?
a. 1s
b. 2p
c. 4f
d. 3s
e. 3d
Answers
Answer:
4f its the last orbital of the above
According to the Aufbau principle and electronic configuration, orbital which is farthest from the nucleus is 4f.
What is electronic configuration?Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.
Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.
Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.
Learn more about electronic configuration,here:
https://brainly.com/question/13497372
#SPJ2
Choose all of the options that demonstrate how humans are impacting the water cycle.
options:
a) Air pollutants wash onto land and water bodies from precipitation
b) Developed areas prevent soil from absorbing rainwater
c) Storm water runoff carries pollution
d) Volcanoes emit carbon dioxide into the atmosphere.
PLEASE answer quick thank you so much
Answers
Answer:
A.) Air pollutants wash onto land and water bodies from precipitation
C.) Storm water runoff carries pollution
I hope I helped! ^-^
26. What type of wave is this?
a. mechanical wave
b. sound wave
C. electromagnetic wave
d. surface wave
Answers
Answer:
option d is correct
Explanation:
mark as brainiest
Correlate What type of stress caused the
fault shown in the image?
Answers
directions - sliding motion causes rock
to break or change shape
1.What are the different properties of solids?
2.What happens when energy is removed from liquid sample?Solid sample?
3.What are the two general categories of solids?
Answers
1. 1) A solid has a definite shape and volume. 2) Solids in general have higher density. 3) In solids, intermolecular forces are strong. 4) Diffusion of a solid into another solid is extremely slow
3.Solid is one of the fundamental states of matter which has fixed shape and volume. Upon the application of external force, solids do not undergo deformation and are incompressible.
Examples: diamond, wood, stone, and metals
Which of the choices below is an empirical formula
Answers
Answer: It's the a12o3
Explanation: It is because I know it...
HEY I NEED A ANSWER RIGHT NOW IT'S MISSING AND MY TEACHER ARE GRADING THEM NOW YOU WILL BE MARKED BRAINLIEST
Answers
Answer:
Explanation:
See the attached picture with answers filled in.
Note:- For tabular way solution refer to the first one .Here I do a simple way to let you understand better
Let's do
Balanced equation is given by
[tex]\\ \rm\Rrightarrow 4Fe+3O_2\longrightarrow 2Fe_2O_3[/tex]
3mols of O_2 produces 2 mol Fe_2O_31 mol O_2 produces 2/3=0.6mol Fe_2O_3Moles of O_2:-
17/32= 0.5molMoles of Fe_2O_3
0.5(0.6)=0.3Mass of Fe_2O_3
159.7(0.3)=47.91g24. A laboratory chemist wants to produce 25.0 g NO2 by the following reactions. If the
percent yield on both steps is 82%, how much N20s must he start with?
N205 2 NO +
02
2 NO + 02 → NO2
Answers
The amount of N2O5 to start with would be 35.79 grams
Stoichiometric calculations
From the balanced equation of the reactions:
[tex]2N_2O_5 --- > 4NO_2 + O_2[/tex]
Mole ratio of N2O5 and NO2 = 1:2
Since the reaction's actual yield is 82%, the theoretical yield would be: 25 x 100/82 = 30.49 grams
Mole of 25 g NO2 = 30.49/46
= 0.66 mole
Equivalent mole of N2O5 = 0.54/2 mole
= 0.33 moles
Mass of 0.27 mole N2O5 = 0.33 x 108.01
= 35.79 grams
More on stoichiometric calculations can be found here: https://brainly.com/question/8062886
The greenhouse effect is occurring because Group of answer choices the ozone layer is being depleted by carbon dioxide the amount of carbon dioxide in the atmosphere is increasing the ionosphere reflects low frequency radiation more ultraviolet radiation is penetrating the atmosphere the crystalline structure of the ice in the high clouds is acting like a glass ceiling, keeping the heat in
Answers
convert 15 mL to liters
Answers
Answer:
0.015 Liters
Explanation:
What does wave frequency have to wave lengths?
Answers
Answer:
Here ya go
Explanation:
Wavelengths are determined by the frequency of the waves. If it is a high frequency you will have a short wavelength. If it is a low frequency you will have a long wavelength.
In this experiment we will be using a 0.050 M solution of HCl to determine the concentration of hydroxide (OH-) in a saturated solution of calcium hydroxide. The initial volume of "filtered" calcium hydroxide solution used in this example will be 36.0 mL. If it takes 16 mL of the HCl solution to reach the equivalence point of the titration, how many moles of OH- were present in this sample of calcium hydroxide?
How many moles of Ca2+ ?
Recall, the values used to determine Ksp values are concentrations. Considering the initial volume of calcium hydroxide was 36 ml, the concentration of OH- is
, and the concentration of Ca2+ is
Using these values, what is the Ksp of calcium hydroxide according to this data?
Report all your answers in scientific notation.
Answers
Based on the definition of equivalence point and the data provided;
the moles of OH- present is 0.0008 molesthe moles of Ca2+ present is 0.0004 moles.The Ksp of calcium hydroxide 5.324 × 10^-8What is equivalence point of a reaction?The equivalence point of a reaction is the point at which equal amounts of both acid and base have reacted.
Equation of the reaction is as follows:
HCl + Ca(OH)2 ---> CaCl2 + 2 H20
Moles of HCl reacted = molarity × volume in L
Moles of HCl reacted = 0.05 M × 16/1000 = 0.0008 moles
Therefore, moles of OH- present = 0.0008 moles
Also, moles of Ca2+ present = 0.0008/2 = 0.0004 moles
The molar solubility product Ksp of calcium hydroxide is calculated as follows.
Ksp = [Ca2+]^2 × 2 × [OH]volume of solution = 36 mL = 0.036 L
[Ca2+] = 0.0004 / 0.036 = 0.011 M
[OH] = 0.0008 / 0.036 = 0.022 M
Ksp = (0.011)^2 × 2(0.022)
Ksp = 5.324 × 10^-8
Therefore, the moles of OH- present is 0.0008 moles and the moles of Ca2+ present is 0.0004 moles.
The Ksp of calcium hydroxide 5.324 × 10^-8
Learn more about equivalence point at: https://brainly.com/question/24584140
Based on shape, what is the predicted relative solubility of 1-butanol, isobutanol, and tert-butanol? Based on size,
what is the predicted relative solubility of 1-butanol and 1-pentanol
Answers
The solubility of an alcohol depends on the length of the alkyl chain in the molecule.
What is an alcohol?An alcohol is an organic compound that contains the -OH group. We have to note that the shape of an alcohol have a profound impact on its solubility. tert-butanol is the most soluble of the three because of its small surface area.
Based on size, 1-butanol is relatively more soluble than 1-pentanol because solubility of alcohols decreases as the length of the alkyl chain increases.
Learn more about alcohol: https://brainly.com/question/14229343
give the IUPAC name for the organic compound
Answers
Answer:
methanide
Explanation:
not sure
