How many liters of a 0.26 M solution of K2(MnO4) would contain 75 g of K2(MnO4)?
Answer:
V = 1.46 L.
Explanation:
Hello there!
In this case, according to the given information, it is possible for us to solve this problem based off the definition of molarity, as the moles of solute divided by the volume in liters of solution:
[tex]M=\frac{n}{V}[/tex]
In such a way, we first calculate the moles of K2(MnO4) by using its molar mass of 197.132 g/mol:
[tex]n=75g*\frac{1mol}{197.132g}=0.38mol[/tex]
Next, we solve for the volume in the equation of molarity to obtain:
[tex]V=\frac{n}{M}[/tex]
And plug in as follows:
[tex]V=\frac{0.38mol}{0.26mol/L}\\\\V=1.46L[/tex]
Regards!
JURCES OF
ATION from our class! Make sure to give
definition & explain your answer for each question part. Today's CRQ
Look at the diagram below. What type of bonding (ionic or covalent) does it
represent? Explain your choice by giving the definition of that type of bond. Give
description of that type of bonding by explaining how & why Hydrogen & Chlorine
bond.
H+CI:-HCI :
-
H:CI:
(For Bonus points-if this was Carbon & Fluorine what would be newly formed Compound's
correct name or Chemical Formula)
Answer:
Covalent bond
Explanation:
A covalent bond is formed when two atoms share electrons. The shared electrons are positioned between the nuclei of the bonding atoms.
In the bonding between chlorine and hydrogen, chlorine has seven valence electrons. Hence, it needs one more electron in order for the atom to attain an octet structure. Hydrogen has one valence electron and needs one more electron in order to attain a duplet structure.
The two bonding atoms now share two electrons(provided by each of the bonding atoms) in a covalent bond such that chlorine has a complete octet and hydrogen has a complete duplet.
URGENT!!!
Which statement explains why an increase in molality increases the boiling point of a solution? The addition of solute decreases the solvent’s vapor pressure. A higher temperature must then be applied to overcome the change. The addition of solute increases the solvent’s vapor pressure. A higher temperature must then be applied to overcome the change. The addition of solute increases the solvent’s ability to boil. The solute’s molecules repel the solvent’s molecules, giving them higher binding energy and hence the need for higher temperature.
Answer:
the addition to solute decreases the solvent's vapor pressure. a temperature must then be applied to overcome the change
Explanation:
Answer:
long story short: A
Explanation:
Convert 22 grams of copper Il chloride (Cucl2) to moles.
with work please
What is the radius of this circle if the circumference is 18 pi cm?
Answer: 2.86 inches
Explanation: To find the radius, then, we insert 18 in for the circumference. So 18=2∏r. Solving for r gives 9/∏, or approximately 2.86 inches.
Answer:
2.86 inches
Explanation:
Which statements describe how traits are inherited? Check all that apply.
A. An offspring always
receives different alleles
from each parent.
B. An offspring always
receives the same alleles
from each parent.
C. An offspring can receive
different alleles or the
same
alleles from each parent.
D. Traits are inherited when
proteins are passed from
parents to offspring.
E. Traits are inherited when
genes are passed from
parents to offspring.
please hurry
What are the environment impacts of Coal?
Explanation:
The major disadvantage of coal is its negative impact on the environment. Coal-burning energy plants are a major source of air pollution and greenhouse gas emissions. In addition to carbon monoxide and heavy metals like mercury, the use of coal releases sulfur dioxide, a harmful substance linked to acid rain.
Several principal emissions result from coal combustion: sulfur dioxide, which contributes to acid rain and respiratory illness.
If 10ml of 1.00M HCI(aq) neutralized 30 ml of an NaOH solution. What was the molarity of the Na OH solution?
Explanation:
plz mark as brainlist///////
What is the difference in a transverse and a longitudinal wave?
Group of answer choices
Transverse waves are bigger than longitudinal waves
A transverse wave has crests and troughs and a longitudinal has compressions and rarefactions.
Transverse waves are sound waves and longitudinal waves are light waves.
Answer:
A transverse wave has crests and troughs and a longitudinal has compressions and rarefactions.
Agustina was standing on the edge of a cliff of unknown height holding a bowling ball. She wanted to find the height of the cliff. She worked with Maite to time the how long the bowling took to fall to the bottom of the cliff. Maite timed the drop at 9.4 seconds on each of their 10 trials. The bowling ball started at rest on each of the trials. What distance did the bowling ball fall in each trial?
Answer:
433 m
Explanation:
Since the fall represents motion under gravity, we use the equation
s = ut - 1/2gt² where s = height of cliff or distance bowling ball falls through, u = initial velocity of bowling ball = 0 m/s(since it starts from rest), t = time = 9.4 s and g = acceleration due to gravity = -9.8 m/s².
So, substituting the values of the variables into the equation, we have
s = 0 m/s × 9.4 s - 1/2 × 9.8 m/s² × (9.4 s)²
s = 0 m - 1/2 × -9.8 m/s² × 88.36 s²
s = 1/2(865.928 m)
s = 432.964
s ≅ 433 m
Speed is a ratio of a distance an object moves to
Answer:
Speed is a ratio of a distance an object moves to the amount of time the object moves
Explanation:
Have a good day :)
Somebody please help this is due in 30 minutes! (picture is attached)
44.5 g Al2(SO4)3
Explanation:
# moles Ba(NO3)2 = (0.543M)(0.717 L)
= 0.389 mol Ba(NO3)2
Now we use the molar ratios,
0.389 mol Ba(NO3)2 ×(1 mol Al2(SO4)3/3 mol Ba(NO3)2)
= 0.130 mol Al2(SO4)3
0.130 mol Al2(SO4)3 × (342.15 g Al2(SO4)3/(1 mol Al2(SO4)3)
= 44.5 g Al2(SO4)3
What does a strong nuclear force do in an atom?
It repels electrons from other electrons.
It repels protons from other protons.
It attracts protons and neutrons.
It attracts protons and electrons.
Answer:
It Attracts Protons And Neutrons
Explanation:
The strong nuclear force can be regarded as strong interaction. It is force which is strong enough to overcomes repulsive force that exist between two positively charged protons, and this give room for protons and neutrons to stick together in small space.This strong interaction can as well be regarded as attractive force and it binds elementary particles known as quarks together and it forms the "nucleons " which is (protons and neutrons) . It should be noted that strong nuclear force Attracts Protons And Neutrons in an atom
Answer:
c
Explanation:
edge
Anyone know this question
Answer:
12
my advice is split the equation into 2 and write on each side how many atoms of each element are there and it will be easier to balance.
Which is the correct chemical formula for Pentacarbon Tetraphosphide
Answer:
C5P4
Explanation:
the answer is C5P4 because penta is 5 and tetra is 4
How has the Chesapeake Bay watershed changed over time?
Answer:
The Chesapeake Bay watershed continues to develop as population in the region grows. Development and urbanization at the cost of natural landscapes can lead to increased pollution of nutrients and sediment to the Bay, especially from stormwater runoff.
Explanation:
How many molecules are in 450.0 grams of aluminum fluoride (AIF3)?
Answer:
5.3586262014272155
Explanation:
You have to go from grams --> moles --> molecules. You can find the equation online.
First you have to find the molar mass of AlF3 which is 83.98 g/mol.
To convert it to moles you simply
450.0 grams × [tex]\frac{1 mol}{83.98 grams}[/tex] = 5.358 mol
To convert mol to molecules: (multiply by Avogadros # = 6.022*10^23)
5.358 mol × [tex]\frac{6.022*10^2^3}{1mol}[/tex] = [tex]3.23 *10^{24}[/tex]
Which characteristic cannot be inherited?
A. color of an animal's fur
B. height of a plant
C. knowledge of facts
D. shape of a face
please hurry
Answer:
the answer is c
Which of the following is a property of water? (5 points)
Question 13 options:
1)
It can freeze very fast.
2)
It has low heat capacity.
3)
It exists in all three states on Earth.
4)
It repels other water molecules.
I believe the answer is number 1 but I could be wrong ><
Water is a substance composed of hydrogen and oxygen and exists in solid, liquid and gaseous state in nature.
What is hydrogen?Hydrogen is "a colourless, odourless, tasteless, flammable gaseous substance that is the simplest member of the family of chemical elements".
What is oxygen?Oxygen is "a non-metallic chemical element of Group 16 (VIa) of the periodic table".
What is solid?Solid is a state of matter in which atoms or molecules are tightly packed.
What is liquid?Liquid is a state of matter in which atoms are held loosely and are free to flow.
What is gas?Gas is a state of matter which has no fixed shape and volume.
Hence, water exists in three states of matter.
To learn more about water here
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A salt solution has a concentration of 30 g/L. How many grams of salt are contained in 600 mL of this solution?
Answer:
answer is 18g
Explanation:
acording to mass formula
mass=concentration x volume
How many electrons make up an octet?

How many degrees would the temperature of a 45.0 g piece of iron increase if 7,680 J of energy are applied to it? (The specific heat of iron is 0.449 J/g°C)
Question 10 options:
76.6°C
155,000°C
380°C
0.0130°C
Answer:
380
Explanation:
Q=mco
Q is the energy
M is mass
C is specific heat
O is increased in temperature
Structures and Forces - What is force and external forces.
Question 1) Jacob and Ravleen are moving furniture. They need to move the filing cabinet over 6 feet and it is very heavy. Jacob wants to apply force and push it by putting his hands on point A because he thinks it would be easier to move it from the top as there is less weight on the top. Ravleen says it's better to push at point B because the center of gravity is lower. Which person is correct and EXPLAIN why and what may happen if it is pushed in the wrong spot.
Answer:
The restoring force that prevents the furniture from tipping over when pushing the furniture towards the right, F= W × D
Where;
W = The weight of the furniture
D = The horizontal distance from the center of gravity of the furniture, CG and the to the lower right corner of the furniture
Given that A > D, for the furniture to tip over when pushing above the CG, we have;
F1 × A ≤ W × D
∴ F1 << W or for a force much smaller than W, the weight of the furniture applied above the center of gravity, the furniture will tip over
However when the force F2 is applied, where C < D, we have for no tipping over;
F2 × C ≤ W × D, therefore, given that C < D, when a force much higher than the weight, W, is applied at F2, the furniture will remain upright
Therefore, it is better push at a point lower than or equal to the center of gravity, whereby the point B is lower than the center of gravity, it is better to push at point B, Ravleen is correct and it is better to push at point B because the center of gravity is lower
If the furniture is pushed at the wrong spot it may tip over
Please see attached drawing
Explanation:
2. Which pair of elements does not form an ionic bond?
a. Kand CI
b. O and CI
c. Na and CI
d. Mg and Cl
[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]
Actually Welcome to the concept of Bond Formation.
Answer is :-
B.) O and Cl
These both are Non-Metals with high Electronegativity nature, hence none of them can share electrons to foram any bond to eventually form a Electro valentines Compound.
write down the important difference between physical change and chemical change
Answer:
In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed.
Explanation:
if this helped you should mark this the brainliest answer also you should join a meeting if you like it would be fun
Answer:
physical change is reversible but chemical change is irreveesable4
Cuál es la densidad (g/ml) de un liquido de batería de automóvil, si tiene un volumen de 0,125 L y una masa de 155g¿?
Answer:
nnaaoooo sseeiiiiii!!!!!!!!!
Calculate the molarity of a solution that contains 0.75 moles of lithium fluoride, LiF, in a 65 mL solution.
The molarity (M) of a solution is 11.5 M that contains 0.75 moles of lithium fluoride, LiF in a 65 ml of solution.
What is Molarity ?Molarity (M) is defined as the number of moles of solute dissolved in 1L of solution. Molarity is also known as Molar concentration. The S.I Unit of Molarity is molar (M) or mol/L.
How to find molarity of a solution ?Molarity (M) = [tex]\frac{\text{Number of moles of solute}}{\text{Volume of solution (in liters)}}[/tex]
From the above definition it is clear that the volume of solution is in liter. In question the volume of solution is given in ml.
So, convert 65 ml into l.
65 ml = [tex]\frac{65}{1000}[/tex] = 0.065 l
Now, put the values in above formula, we get that
(M) = [tex]\frac{0.75}{0.065}[/tex] = 11.5 M
Thus, the molarity of a solution is 11.5 M that contains 0.75 moles of lithium fluoride, LiF in a 65 ml of solution.
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You come across two unknown plants and compare their leaves. Plant A has feather like leaves, while Plant B has needles. What type of plant is Plant B? Fern Flowering plant Pine tree Spores
Answer:
The correct answer is - Pine tree.
Explanation:
Coniferous trees or cone-bearing trees normally called conifers adapted their leaves and have needles like leaves that retain more water. Needles do not appear to be leaves but are modified leaves.
Conifer trees adapt this leaf modification to prevent water loss due to transpiration in the case of dry air or atmosphere. Important members of the conifer trees are pine trees, cedars, spruces, and Pines.
Why do you think the Sun is not at the center of Mercury’s orbit?
Answer:
Like Venus, Mercury orbits the Sun within Earth's orbit as an inferior planet, and its apparent distance from the Sun as viewed from Earth never exceeds 28°. This proximity to the Sun means the planet can only be seen near the western horizon after sunset or the eastern horizon before sunrise, usually in twilight.
Explanation:
Cuál es la Masa en Gramos de 3,5 moles de H2O?