Answer:
0.409 m
Explanation:
The molarity of the original K₂CO₃ solution given the data from the question is 0.409 M
Balanced equationH₂SO₄ + K₂CO₃ —> K₂SO₄ + CO₂ + H₂O
From the balanced equation above,
The mole ratio of the acid, H₂SO₄ (nA) = 1The mole ratio of the base, K₂CO₃ (nB) = 1How to determine the molarity of K₂CO₃Volume of acid, H₂SO₄ (Va) = 38.4 mL Molarity of acid, H₂SO₄ (Ma) = 0.25 MVolume of base, K₂CO₃ (Vb) = 23.5 mLMolarity of base, K₂CO₃ (Cb) = ?MaVa / MbVb = nA / nB
(0.25 × 38.4) / (Mb × 23.5) = 1
9.6 / (Mb × 23.5) = 1
Cross multiply
Mb × 23.5 = 9.6
Divide both side by 23.5
Mb = 9.7 / 23.5
Mb = 0.409 M
Thus, the molarity of the K₂CO₃ solution is 0.409 M
Learn more about titration:
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How many Liters are in 3 grams of O2? *
Cells come from other cells.
Question 2 options:
True
Never
False
Sometimes
Answer:
True
Explanation:
this is part of the cell theory
From which type of clouds do hail pellets form?
cirrus
cumulonimbus
nimbostratus
stratus
Answer:
cumulonimbus
Explanation:
In an ecosystem, which of the following is NOT an abiotic factor
Ice
Algae
Fire
Pond water
Answer:
algee
Explanation:
(Pleaseeee help me) List 3 things you should talk about in a good conclusion?
Answer:
easy, beging sentenice(dont judge spelling), refer to quotes, final thoughts
Explanation:
HELpPPPPppp!!!!!! will mark brainless
Answer:
A
Explanation:
This is because in the graph shown line A has a quite greater impact of refraction than line B .
Hence, we can conclude that line A has the greater reaction at a faster rate.
Describe how greater distance affects the appearance of an object’s size and brightness
Answer:
Distance also affects the apparent brightness of an object. A distant, but very energetic star can appear dimmer to us than a lower-energy, but closer one. ... Each of their effective temperatures results in a different brightness for the object. The quasar, however, is very far away, and so appears dim.
Explanation:
Fossil fuels are made up of?
Answer:
a
Explanation:
Coal is fossilized animal and plant remains
Contrast the way the conqueror comes with the way the Pilgrims came (stanzas three and four).
Answer:
tbh id k i've never read it so if u could send the link I could help you.
Explanation:
mole equations please help me :(
Answer:
A. 0.48mol O2
Explanation:
The balanced equation is given as follows:
2CH3OH + 3O2 → 2CO2 + 4H2O
This shows that 2moles of CH3OH is required to react with 3 moles of O2
If 0.32 moles of CH3OH are reacted, then;
0.32 × 3/2 moles of O2 is required
= 0.96/2
= 0.48mol of O2
Convert 543 K to degrees Centigrade (Write down equation of conversion
Answer
269.85 C
Explanation:
543k - 273.15 = 269.85 C
abdullah qusai dont cheat in the exam
MgS is the chemical formula for the ionic compound named
Answer:
Magnesium Chloride
Explanation:
Which is the best example of commensalism?
O Honey bees feed on the pollen of cornflowers and help the flowers reproduce.
O Barnacles ride on a gray whale's back to obtain food, and the whale is not harmed.
Squirrels and chipmunks eat the same nuts in a forest where food is scarce.
O Prairie dogs often collect and eat food in groups so they are better protected from enemies.
Answer:
Answer B
Explanation:
The Answer is B got it right on the Test.
Answer:B
Explanation:
i don’t understand this question someone please help
Match the terms to their definition.
1 .
Male gonads
conception
2 .
a body chemical that controls growth and activity
eggs
3 .
The fertilization of a female egg cell with a male sperm cell
fertilization
4 .
The union of the male gamete (sperm cell) and the female gamete (egg cell)
gonad
5 .
gamete-producing organ in animals
hormone
6 .
Female reproductive cells
ovary, ovaries
7 .
The male reproductive cell
sperm
8 .
Female gonads
testes, testicles
Answer:
2
Explanation:
Answer:
1. Sperm - The male reproductive cell
2. Fertilization - The union of the male gamete (sperm cell) and the female gamete (egg cell)
3. Conception - The fertilization of a female egg cell with a male sperm cell
4. Testes, Testicles - Male gonads
5. Ovary, Ovaries - Female gonads
6. Gonad - Gamete-producing organ in animals
7. Eggs - Female reproductive cells
8. Hormone - a body chemical that controls growth and activity
Explanation:
Hope this helped!
pls answer need it NOW
Answer: Cotton
Explanation: Yes
Al(s) + NiSO4(aq)
Balance
Answer:
[tex]2Al(s) + 3NiSO4 --> Al2(SO4)3 + 3Ni[/tex]
Explanation:
This reaction type is a single replacement. The format of a single replacement is:
[tex]A+BC --> B+AC[/tex]
A= Al
B= Ni
C= SO
The coefficient 3 for Ni would become a subscript for AC. After you plug those into the reaction you need to count how many of each are on the left side and try to get the same number on the right side. Both sides must be equal to have a balanced equation.
Which is the best method of obtaining pure water from lemonade?
Answer:
filtration is the answer
Explanation:
Conodonts in a sedimentary rock layer change color from dark to translucent-white. How will
the sedimentary rock layer be affected if the burial continues?
Answer:
The heat and pressure from the burial will cause the sedimentary rocks containing conodont fossils to form igneous rocks slowly.
Explanation:
don´t need one for common sense
Question 17
Which type of renewable energy uses the sun’s energy as a source of power?
a. wind energy
b. biomass energy
c. geothermal energy
d. solar energy
Answer:
d. solar energy
Explanation:
Areas in Mexico and Central America are known as
The majority of Canada’s manufacturing takes place in the provinces of Ontario and __________.
A.
Alberta
B.
Nova Scotia
C.
Quebec
D.
Saskatchewan
Answer:
other guy is correct. it is C Quebec.
Explanation:
got it right on the unit test review, edge 2021
Which rate law is consistent with the mechanism?
What group on the periodic table has the fewest valance electrons
Answer:
Alkali metals
Explanation:
The lowest number of valence electrons is found in the alkali metals (group 1), which have only one valence electron per atom.
Answer:
Alkali metals:) im 100% sure because i just got done learning everything in the periodic table:)
Explanation:
6. Changing a SOLID to a LIQUID to a GAS requires
Answer:
Energy (latent heat)
Explanation:
Latent heat of fusion for solid to liquid
Latent heat of vaporization for liquid to gas.
Answer:
it requires the present of heat
Explanation:
when there is heat the solid will melt into liquid and from liquid when it is heated for example when water is heated it evaporate into vapor which is gas
Answer the following question for this equation: 2H2 + O2 → 2H2O
What is the O2 to H2O molar ratio?
Answer:
B. 1:2
Explanation:
Molar ratio depicts the relationship between the number of moles of two substances. The chemical equation in this question is as follows:
2H2 + O2 → 2H2O
This question is asking to identify the molar ratio of O2 to H2O in the equation. Since 1 mole of oxygen gas (O2) produces 2 moles of water (H2O). Hence, the O2 to H2O molar ratio is 1:2.
CAN SOMEONE ANSWER ME!! 5-6
Answer:
As the axial tilt increases, then the seasonal contrast increases so that winters are colder and summers are warmer in both hemispheres. The northern hemisphere is tipped away from the Sun, producing short days and a low sun angle. What kind of effect does the earth's tilt and subsequent seasons have on our length of daylight (defined as sunrise to sunset). Over the equator, the answer is not much.
how do i get my skin perfect without expensive products? I'm asking bc my face and neck have been massively breaking out with pimples and sweat bumbs. i can go out in public its so bad plsss help
Answer:
if you are a teen then its pretty normal as during the age of adolescent sweat gland become active and pimples take place on you face , no need to worry at this your face will become beautiful again .
but if you are above 25 then it is a time to worry , you should consult a doctor or you can use alovera jel or any other home remedies. :)
highest energy level for lithium
QUESTION :
highest energy level for lithiumANSWER :
There are 2 electrons on the first energy level and 1 electron on the second. Explain that the first energy level can only have 2 electrons so the next electron in lithium is on the next (second) level. Explain that neon has 10 protons and 10 electrons.Order these stars from dimmest to brightest: supergiant, yellow dwarf, giant, and red dwarf.(2 points)
red dwarf, yellow dwarf, supergiant, giant
yellow dwarf, red dwarf, giant, supergiant
supergiant, giant, yellow dwarf, red dwarf
red dwarf, yellow dwarf, giant, supergiant
Answer:
red dwarf, yellow dwarf, giant, supergiant
Explanation:
Super giants and giants tend to be the brightest of the bunch while the yellow dwarf is in its main sequence which is like the sun while the red dwarf is a low mass main sequence meaning low mass= low brightness