Answers
Answer:
1.7 mL
Explanation:
start with formula M1V1=M2V2
then plug in values (3)V1=(100)(.05) and solve for V1
V1= 1.66
According to molar concentration, 1.7 ml of of 3 M NaOH is required to make 100 ml of of 0.05 M NaOH.
What is molar concentration?Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.
The molar concentration depends on change in volume of the solution which is mainly due to thermal expansion. Molar concentration is calculated by the formula, molar concentration=mass/ molar mass ×1/volume of solution in liters.
In terms of moles, it's formula is given as molar concentration= number of moles /volume of solution in liters.
In case of 2 solutions, molarity is determined as, M₁V₁=M₂V₂
Substitution of values gives, V₁=0.05×100/3=1.7 ml.
Thus, 1,7 ml of 3 M NaOH will be required to make 100 mL of 0.05 M NaOH.
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Related Questions
what two factors does thermal energy depend upon
Answers
Answer:
Thermal energy depends on mass and temperature.
Explanation:
The two factors on which thermal energy depends are the mass of an object and temperature.
What is thermal energy?
Thermal energy is defined as a type of energy which is contained within a system which is responsible for temperature rise.Heat is a type of thermal energy.It is concerned with the first law of thermodynamics.
Thermal energy arises from friction and drag.It includes the internal energy or enthalpy of a body of matter and radiation.It is related to internal energy and heat .It arises when a substance whose molecules or atoms are vibrating faster.
These vibrating molecules and atoms collide and as a result of which heat is generated in a substance , more the collision of particles , higher is the thermal energy.There are the three types of thermal energy.
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Which of the following molecules have a dipole moment?
Select one or more:
CS2
SeS2
CINO
ВСІЗ
CClaF2
CO2
PCIE
Com
Answers
Answer:
cs2
Explanation:
Lily is doing a science experiment with a substance in a sealed jar. At first,
the substance's molecules are moving around each other. What will
happen to Lily's substance if she transfers energy into the substance and
causes a phase change? After the phase change, the substance's
molecules will move...'
faster, and the substance will be a liquid.
faster, and the substance will be a gas.
slower, and the substance will be a solid.
slower, and the substance will be a liquid.
Answers
Answer:
Faster, and the substance will be a gas.
Explanation:
I'm quite not sure with it. But, I've tried my best. Since maybe the substance is liquid
rock cycle define
in your own words
Answers
Answer:
Explanation:
The rock cycle basically tell you how the different types of rocks are related to each other and tells how they change over time.
Hope this helped!!!
Answer:
The rock cycle is the process by which rocks of one kind change into rocks of another kind. Metamorphic rock is igneous or sedimentary rock that has been heated and squeezed. It can erode into sediment or melt into a hot substance known as refordium. It is formed under extreme pressure and temperature deep inside mountain chains. For example, sedimentary rock shale becomes slate when heat and pressure are added, thus transforming it into another state of rudementury.
What is the mass of an object with a volume of 2.0 mL and a density of 28.8 g/mL?
Answers
Answer:
your answer is really 308ml
Taking into account the definition of density, the mass of an object with a volume of 2.0 mL and a density of 28.8 [tex]\frac{g}{mL}[/tex] is 57.6 grams.
But first you must know the definition of density. Density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space.
In other words, density is a quantity that allows us to measure the amount of mass in a certain volume of a substance. Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:
[tex]density=\frac{mass}{volume}[/tex]
From this expression it can be deduced that density is inversely proportional to volume: the smaller the volume occupied by a given mass, the higher the density.
In this case, you know that:
Density= 28.8 g/mLVolume= 2 mLReplacing in the definition of density:
[tex]28.8 \frac{g}{mL} =\frac{mass}{2 mL}[/tex]
Solving:
mass= 28.8 [tex]\frac{g}{mL}[/tex] ×2 mL
mass= 57.6 g
In summary, the mass of an object with a volume of 2.0 mL and a density of 28.8 [tex]\frac{g}{mL}[/tex] is 57.6 grams.
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https://brainly.com/question/952755?referrer=searchResultshttps://brainly.com/question/1462554?referrer=searchResultsCan someone help me please
Answers
Answer:
(14)The pH is 8.3 and is basic
(15) pOH = 11.0 The solution is acidic
Explanation:
(14) From the question,
pH = -log[H₃O⁺]............... Equation 1
Given: H₃O⁺ = 5.6×10⁻⁹ M
Substitute the value above into equation 1
pH = -log[5.6×10⁻⁹]
pH = 8.3
The pH is 8.25 and is basic.
(15)
pOH = -log[OH⁺]................ Equation 2
Given: [OH⁺] = 8.34×10⁻¹² M
Substitute into equation 2
pOH = -log[8.34×10⁻¹²]
pOH = 11.0 Hence the solution is acidic
What does evaporation produce?
a precipitation
brain or snow
С
water vapor
d condensation
Answers
Answer:
C. Water Vapor
Explanation:
Hope this helps! Have an Amazing day!!
Answer: Hewo, there! your answer is Below
c. water vapor Is the correct answer.
Explanation:
The molecules move and vibrate so quickly that they escape into the atmosphere as molecules of water vapor.
Hope this helps you!
Have a great day!!
-August-
can someone help me with 5?
Answers
Answer:28 g
Explanation:
please help me and dont send me a bitly link its a scam
Answers
Answer:
Explanation:
4)6.27x10^20/(6.02x10^23)(u should have this number on your formula sheet)=0.001 mol
5)7.4x6.02x10^23=44.548x10^23atoms
6)molar mass for K is 39.10g/mol
3.27x39.10=127.86g
Im bad at sig figs. Just do it urself(:p
The relation between molarity and normality is expresses as: a) M = N x g.e.w/g.m.w
b) M = N x g.m.w/ g.e.w
c) M = N x no. of equiv./mole
d) M = N x no. of g.m.w/mole
Answers
Answer: [tex]Molarity=Normality\times \frac{gew}{gmw}[/tex]
Explanation:
Molarity is defined as the number of moles dissolved per liter of the solution.
[tex]Molarity=\frac{\text {moles of solute}}{\text {Volume in L}}[/tex]
[tex]{\text {moles of solute}=\frac{\text {given mass}}{\text {Molar mass}}[/tex]
Normality is defined as the number of gram equivalents dissolved per liter of the solution.
[tex]Normality=\frac{\text {gram equivalents of solute}}{\text {Volume in L}}[/tex]
[tex]{\text {gram equivalents of solute}}=\frac{\text {given mass}}{\text {Equivalent mass}}[/tex]
Thus [tex]Molarity=Normality\times \frac{\text {Equivalent mass}}{\text {Molar mass}}[/tex]
"The sun was setting behind the mountain when Isaiah reached the first fields of crops, bordered by low white stone walls. At the end of the road was the village, built on a slope, whose houses sank with all their weight into the ground, as if in fear of sliding further down. Roofs of overlapping slates peered down on the tiny, lifeless windows. The tall wooden chimneys, shaped like truncated pyramids, smoked quietly in the evening. This place was the extreme point where men had dared to plant a shelter and sow the grain. But, on the rough, rocky soil, even the rye did not grow well. The old men died without having saved anything, and the young, one after the other, fled from this corner of bad earth that the snowfalls isolated from the world for six months of the year. Once prosperous and populated to the rim, the village now had barely eighteen fires. And above it there were only shelters lost in the mountains for summer climbers. "
1.This description allows us to identify the village of the two brothers as being mainly
a. An isolated high mountain village in which the inhabitants work hard and see their efforts rewarded.
b. A quiet high-altitude village in which many courageous young farmers live.
c. A village in total harmony with the wilderness that still can't feed its children.
d. A pleasant village in the heart of the rugged mountains that welcomes many climbers in summer.
Answers
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This is bob. If you brainliest him. He will reward you with a certain script.
Radium-222 undergoes radioactive decay to produce radon-218. Which
particle needs to be added to this equation to show that the total numbers of
neutrons and protons are not changed by the reaction?
22 Ra
21°Ra + ?
88
86
A. He
B. o
tie
c. Le
D. He
Answers
Answer:
2/4 HE
Explanation:
Ape.x
An electron in a hydrogen atom moves from level 3 to level 1. In a second hydrogen atom, an electron drops from level 2 to level 1. Which statement describes the most likely result?
Answers
Answer:
An electron in a hydrogen atom moves from level 3 to level 1. In a second hydrogen atom, an electron drops from level 2 to level 1. Which statement describes the most likely result? The first atom emits light with more energy.
The isomerization reaction, ch3nc → ch3cn, is first order and the rate constant is equal to 0.46 s-1 at 600 k. what is the concentration of ch3nc after 7.0 seconds if the initial concentration is 0.30 m?
Answers
Answer:
y=meme3squared
Explanation:
YEEEEEEEEEEEEEEEE
How are ionic compounds named?
Answers
Answer:
Ionic compounds are neutral compounds made up of positively charged ions called cations and negatively charged ions called anions.
Explanation:
For binary ionic compounds (ionic compounds that contain only two types of elements), the compounds are named by writing the name of the cation first followed by the name of the anion.
The pressure of an ideal gas stays constant at 2.57 atm.
This ideal gas has a volume of 45.8 mL when it is at a
temperature of 37.0°C. What temperature will this ideal gas
be at when it contracts to 32.5 mL?
Answers
Answer:
[tex]T_2=-53.15\°C[/tex]
Explanation:
Hello there!
In this case, in agreement to the Charles' law which states that the volume and temperature relate to each other via a directly proportional relationship at constant pressure, we can write:
[tex]\frac{T_2}{V_2} =\frac{T_1}{V_1}[/tex]
Thus, given V1, V2 and T1 (310 in Kelvin), we can solve for the final temperature as shown below:
[tex]T_2=\frac{T_1V_2}{V_1} \\\\T_2=\frac{310K*32.5mL}{45.8mL}\\\\T_2=220 K-273.15K\\\\T_2=-53.15\°C[/tex]
Best regards!
Did you hear the one about a chemist who was reading a book about helium?
Answers
Answer: I had that before it's a riddle. Here lemme find it and give you the answer.
Explanation:
1.H
2.E
3.C
4.O
5.U
6.L
7.D
8.U
9.T
10.P
11. N
12.T
13.I
14.T
15.D
16.O
17.N
18.W
Helium is a type of chemical element which is a noble gas that does not have odor, color, taste and does not contain toxicity. It's atomic number is 2 and is chemically represented with "He"
As a result of this, there are some unique characteristics of the Helium element which includes:
Low boiling pointLow densityHigh thermal conductivityLow solubility, etcPlease note that your question is disjointed so I gave you a general overview to help you understand the concept
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Which of the following is not the name of an amino acid?
A. Lysine
B. Valine
C. Methane
D. Phenylalanine
(Edge)
Answers
Answer:
C. Methane
Explanation:
Hopefully this isnt too late!
Answer:
C. Methane
(Photo for proof at the bottom.)
Explanation:
All amino acids contain an amino group, a carboxyl group, and an R group. An amino group consists of NH2. A carboxyl group consists of COOH. And an R group usually consists of a hydrogen or carbon atom bonded to the amino acid. Methane only consists of CH4, which clearly does not meet the criteria of an amino acid.
Here's a photo of Edge incase you're doubtful.
Please click the heart if this helped.
I REALLY NEED HELP ITS DUE TODAY TY IN ADVANCE <3
Answers
chemistry in formula of water
Answers
Answer: Unbalanced : H2O
Balanced : 2H2O
Explanation:
plzz mark as brainliest
H2O
Explanation:
Water (chemical formula: H2O) is a transparent fluid which forms the world's streams, lakes, oceans and rain, and is the major constituent of the fluids of organisms. As a chemical compound, a water molecule contains one oxygen and two hydrogen atoms that are connected by covalent bonds.
Write a balanced half-reaction for the reduction of bismuth oxide ion to bismuth ion in basic aqueous solution. Be sure to add physical state symbols where appropriate.
Answers
Answer:
[tex]3H_2O+(Bi^{5+}O_3)^-\rightarrow Bi^{3+}+6OH^-[/tex]
Explanation:
Hello there!
In this case, according to the required half-reaction, we start by setting it up from bismuth (V) oxide ion to bismuth (III) ion:
[tex]BiO_3^-\rightarrow Bi^{3+}[/tex]
Thus, next realize that the oxidation state of Bi in BiO3^- is 5+ because oxygen is 2- (-2*3+x=-1;x=-1+6;x=+5), so we obtain:
[tex](Bi^{5+}O_3)^-\rightarrow Bi^{3+}[/tex]
Thereafter, we realize three water molecules are needed on the right in order to balance the oxygens and consequently 6 hydrogen atoms on the left to balance hydrogen:
[tex]6H^++(Bi^{5+}O_3)^-\rightarrow Bi^{3+}+3H_2O[/tex]
Now, since the balance is is basic media, we add six molecules of hydroxide ions in order to produce water with the hydrogen ones:
[tex]6OH^-+6H^++(Bi^{5+}O_3)^-\rightarrow Bi^{3+}+3H_2O+6OH^-\\\\6H_2O+(Bi^{5+}O_3)^-\rightarrow Bi^{3+}+3H_2O+6OH^-\\\\6H_2O-3H_2O+(Bi^{5+}O_3)^-\rightarrow Bi^{3+}+6OH^-[/tex]
Then, we accommodate the waters to obtain:
[tex]3H_2O+(Bi^{5+}O_3)^-\rightarrow Bi^{3+}+6OH^-[/tex]
Best regards!
Which of the following equations correctly describes how to calculate net income? a. net income = (cost of goods sold) - (net sales) - (operating expenses) b. net income = (operating expenses) - (cost of goods sold) - (net sales) c. net income = (operating expenses) + (cost of goods sold) - (net sales) d. net income = (net sales) - (cost of goods sold) - (operating expenses) Please select the best answer from the choices provided A B C D Mark this and return
Answers
Answer:
The answer is D. net income= (net sales) - (cost of goods sold)- (operating expenses).
Explanation:
On the line provided, write the formula for the compound made by each of the following. (3 pts each) 20. Mgand NO3-1, 21. CIO3-1 and K 22. Ca and So4-2, 23. NH4+1 and SO4-2, 24. C2H30-1, ' and H 25. Hand CO, t
Answers
Answer:
20. Mg(NO3)2
21. KClO3
22. CaSO4
23. (NH4)2SO4
24. HC2H3O
25. CO is carbon dioxide, which is neutral and would not combine with a hydrogen ion. Did you mean H and CO3(2-)? That would be H2CO3 (carbonic acid)
Explanation:
You have to match the charges of the Cations and Anions.
How many moles of O2 are needed to react with 2.55 mol of C2H2?
Express your answer to three significant figures
Answers
Answer: 6.38 moles of [tex]O_2[/tex] are needed to react with 2.55 mol of [tex]C_2H_2[/tex]
Explanation:
The balanced chemical reaction for the combustion of ethyne is:
[tex]2C_2H_2+5O_2\rightarrow 4CO_2+2H_2O[/tex]
According to stoichiometry:
2 moles of [tex]C_2H_2[/tex] require = 5 moles of [tex]O_2[/tex]
Thus 2.55 mol of [tex]C_2H_2[/tex] require = [tex]\frac{5}{2}\times 2.55=6.38[/tex] moles of [tex]O_2[/tex]
Thus 6.38 moles of [tex]O_2[/tex] are needed to react with 2.55 mol of [tex]C_2H_2[/tex]
An acid of known strength, HA, is used in a titration to determine the concentration of a solution of NaOH. What ions are present in the flask at the equivalence point?
Answers
Answer:
Na+ And A-
Explanation:
Answer: Na + and A-
Explanation:
Complete the following double displacement reactions
KOH + H 2 SO 4
NaOH + HCl
Al 2 (SO 4 ) 3 + NaOH
BaCl 2 + Na 2 SO 4
PbSO 4 + Na 2 CO 3
Answers
Answer:
2 KOH + H₂SO₄ ⇒ K₂SO₄ + 2 H₂O
NaOH + HCl ⇒ NaCl + H₂O
Al₂(SO₄)₃ + 6 NaOH ⇒ 3 Na₂SO₄ + 2 Al(OH)₃
BaCl₂ + Na₂SO₄ ⇒ BaSO₄ + 2 NaCl
PbSO₄ + Na₂CO₃ ⇒ PbCO₃ + Na₂SO₄
Explanation:
In double displacement reactions, both reactants exchange their cations and anions.
2 KOH + H₂SO₄ ⇒ K₂SO₄ + 2 H₂O
NaOH + HCl ⇒ NaCl + H₂O
Al₂(SO₄)₃ + 6 NaOH ⇒ 3 Na₂SO₄ + 2 Al(OH)₃
BaCl₂ + Na₂SO₄ ⇒ BaSO₄ + 2 NaCl
PbSO₄ + Na₂CO₃ ⇒ PbCO₃ + Na₂SO₄
What is the mass of 3.5 x 10 23 molecules of co2
Answers
Answer:
x = 3/6.02 = 0.50.
Explanation:
1 mole of CO2 has 6.02 x 10^23 molecules of CO2.
Say x moles of CO2 has 3.0x10^23 molecules of CO2.
Therefore x = 3/6.02 = 0.50.
(b) What is the frequency of violet light with a wavelength of 433 nm?
Frequency
$
Answers
(A)
We know speed of light is given by the formula-
Speed = wavelength x frequency
Now for the violet light speed of light is 3 x 10^8 m/sec.
We proceed now as follows-
Step 2
(B)
We know 1 nm = 10^-9 m
Now,frequency will be-
3 x 10^8 m /sec / 433 x 10^-9 m = 0.00692 x 1017 sec-1
Thus, the frequency of the violet light of given wavelength is
0.00692 x 1017 sec-1 .
Which of the following compound is most soluble in water a)glycerol b) ethyl alcohol c) ethylene glycol d)ethyl chloride
Answers
Answer:
glycerol
Explanation:
it is thick sweet liquid.It is type of alcohol which has 3 OH groups
d. Explain why hydrogen produces three light in spectrometer
Answers
Answer:
Though a hydrogen atom has only one electron, it contains a large number of shells, so when this single electron jumps from one shell to another, a photon is emitted, and the energy difference of the shells causes different wavelengths to be released. Hence, mono-electronic hydrogen has many spectral lines.
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