Answer:
7.8286e+23
Explanation:
Use Avogadro's number
how molecular structure affects solubility?
Answer:
The molecular structure affects solubility mainly biased on its polarity or bonded ions.
Explanation:
Polar molecules will better interact with the water molecules and will dissolve easier. Nonpolar molecules can dissolve if they are small enough, however they don't interact well with the polar molecules. Bonded ions, such as NaCl split into a cation Na and an anion Cl which the positive charge on the Na will be attracted to the oxygen, and the negatively charged Cl will be attracted to the positive Hydrogen.
**Remember this rule, like dissolves like, meaning nonpolar dissolves nonpolar and polar dissolves polar.
I hope this helps!
What is a mixture ?
How do homogeneous & heterogeneous mixtures differ ?
1st question: A mixture is when the components of a mixture can be easily separated and that the components each keep their original properties.
2nd question:A phase is any part of a sample that has a uniform composition and properties.By definition, a pure substance or a homogeneous mixture consists of a single phase. A heterogeneous mixture consists of two or more phases. When oil and water are combined, they do not mix evenly, but instead form two separate layers.
Heterogeneous mixtures are not uniform in composition. Examples would be wood or blood. Homogeneous mixtures are uniform through out. Typically you can see through them.
Do solar panels use electrical energy or produce electrical?
Answer:
How Does a Solar Panel Generate Power? Solar panels use the photons produced by sunlight to generate direct current (DC) electricity. When the photons hit the panel they are absorbed by the panel's semiconducting silicon material.
Explanation:
Answer:
Solar panels produce electrical energy by absorbing the solar energy from the sun and converting it into electrical energy.
Explanation:
Does this aid in joining the two molecules?
Answer:
yes it does aid in joining the two molecules
Explanation:
Is sweat a chemical? I am curious to know! NO LINKS OR TROLLS
Answer:
no
Explanation:
stop troll hate
001 10.0 points
If you mix 4.5 g of HCl in enough water to
make 0.9 L (900 mL) of solution, what is the
molarity of the solution?
Answer in units of M.
Gasoline has a density of 0.7197 grams per milliliter. Calculate the mass, in grams, of a sample of gasoline with a volume of 48.5 milliliters.
Answer:
34.9103 or 34.9 g
Explanation:
Remember Density is a broken heart: m/v.
In this scenario (Let x = # of grams in the sample of gasoline),
D = 0.7198 g/mL = x g / 48.5 mL
So,
(0.7198 g/mL) * (48.5 mL) = x g
x g = 34.9103 = 34.9 g (Accounting for Significant Figures)
Which statement correctly describes the relationship between molecular structure, the strength of electrostatic forces between
molecules, and the boiling point of a substance? (1 point)
The boiling point of a substance affects the strength of electrostatic forces, which can affect the molecular
structure
The boiling point of a substance affects its molecular structure, which can affect the the strength of
electrostatic forces.
Molecular structure affects the strength of electrostatic forces, which can affect the boiling point of a
substance
Stronger electrostatic forces cause a stronger molecular structure and lower boiling points
Molecular structure affects the strength of electrostatic forces, which can affect the boiling point of a substance is the statement that correctly describes the relationship between these terms.
The molecular structure is the way in which the atoms that are in a molecule are arranged in space, this is defined by a series of forces that hold the atoms together in a specific arrangement.
The boiling point is the temperature at which the vapor pressure of the liquid equals the pressure that surrounds the liquid, when this happens, the liquid transforms into gas.
For a compound to vaporize, the forces that hold the molecules together must be broken, this means that the boiling point of a compound depends on the attraction between the molecules, that is, on the forces that determine the molecular structure.If the molecules are held together by strong electrostatic forces, it will take a lot of energy to push the molecules away from each other and the compound will have a very high boiling point.Therefore, we can conclude that the boiling point depends on the molecular mass of the substance and the type of electrostatic forces present, that is, the bonds that the atoms establish with each other to form the molecule (molecular structure).
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How many grams of potassium sulphate are formed when 49g of sulphuric acid in solution are neutralised by potassium hydroxide?
BRAINLIEST TO BEST ANSWER AND 40 POINTS GRAB QUICK
Why are sodium (Na) and potassium (K) in the same group on the periodic table?
Answer:
They both have 1 valence electron
Explanation:
The diagram shows Earth's position in its orbit around the Sun at the beginning of each season
Which position of Earth shows the Moon located where its shadow may sometimes reach Earth?
The position where the moon is located where its shadow may sometimes reach Earth is position A .
What is an eclipse?We know that in the outer space there are a lot of celestial bodies that can be found. Now we know that a celestial body is one that can be found in the outer space and the moon and the sun are all parts of the celestial bodies that we can find in the solar system.
In this case we are being asked for the position of the moon that could lead to an eclipse where the moon would come between the earth and the sun and that is the position A.
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[EARTH SCIENCE]
Hi, can anyone help please? Thank uuuu!!! :D
The relationship between the average distance of a planet from the sun and the planet’s orbital period is described by the....
A. Law of ellipses.
B. Law of equal areas.
C. Law of motion.
D. Law of periods.
Answer:
c. law of motion
Explanation:
I think I hope it helps
What happens to the atoms in food once animals eat them?
they are destroyed
they are used to make the animal grow
they are released as waste
Answer:
i think
they are used to male the animal grow
Once the animal eats the food, the atoms in food are used to make the animal grow.
What is an atom?An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.
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Help me:) please and thanks! Part 3
Answer:
then this picture 11 Venkat and one person is
Explanation:
join date 20th December is not a problem with the topic of your name and address of the topic of your name and address of the topic of your name and address of the topic of your life in general is not available in the equation is the topic of your name and address
so nothing in this picture .
Find the unit price: 12 eggs for $3. How much is the cost per (one) egg?.
it's 3 dollars per 12 eggs so 3/12
simplify 3/12 by dividing both numbers by 3 so you get 1/4
you should know what 1/4 of a dollar is
or think of it this way 12 eggs are 3 dollars so every 4 eggs is one dollar. divide 1 dollar by 4 eggs
Which statement correctly defines dynamic equilibrium?
At dynamic equilibrium, the rates of forward and reverse reactions are equal.
At dynamic equilibrium, the rate of the forward reaction is higher than the rate of the reverse reaction.
At dynamic equilibrium, the forward and reverse reactions stop.
At dynamic equilibrium, the concentrations of reactants and products are equal.
Answer: at dynamic equilibrium, the rates of forward and reverse reactions are equal.
Explanation:
The correct statement defines dynamic equilibrium "at dynamic equilibrium, the rates of forward and reverse reactions are equal."
What is dynamic equilibrium?The state of a particular system wherein the reversible reaction takes place ceases modifying the ratio of reactants as well as products, but there is still a transfer of substances among the reactants and products is known as dynamic equilibrium.
What is reactions?Chemical reaction can be defined as the a method for creating novel chemicals with unique features.
The correct statement defines dynamic equilibrium "at dynamic equilibrium, the rates of forward and reverse reactions are equal."
Therefore, the correct answer will be option (a).
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the ability to conduct electricity is a characteristic of metallic bonding. this characteristic is best explained by the presence of ________________.
7. Balance the following reaction under basic conditions: Al (s) + Cr2O72- (aq) -> Al3+ (aq) + Cr3+ (aq)
8. What is the ^o of the following balanced redox reaction (use the reduction potentials provided in Table 11.1
below)?
Fe3+ (aq) + Au (s) -> Fe (s) + Au3+ (aq)
9. What is G for the reaction below – calculate it from the ^o ?
Fe (s) + Au3+ (aq) -> Fe3+ (aq) + Au (s)
The free energy change of the reaction; Fe (s) + Au3+ (aq) -> Fe3+ (aq) + Au (s) is calculated to be -443.83KJ/mol.
For the reaction shown in question 7, we can divide it into half equations as follows;
Oxidation half equation;
6 Al (s) -------> 6Al^3+(aq) + 18e
Reduction half equation;
3Cr2O7^2-(aq) + 42H^+(aq) + 18e -----> 6Cr^3+(aq) + 21H2O(l)
The balanced reaction equation is;
6Al(s) + 3Cr2O7^2-(aq) + 42H^+(aq) -----> 6Al^3+(aq) + 6Cr^3+(aq) + 21H2O(l)
The E° of this reaction is obtained from;
E° anode = -0.04 V
E°cathode = +1.50 V
E° cell = +1.50 V - (-0.04 V) = 1.54 V
Given that;
ΔG° = -nFE°cell
n = 3, F = 96500, E°cell = 1.54 V
ΔG° = -(3 × 96500 × 1.54)
ΔG° = -443.83KJ/mol
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a.
Which of the following statements about empirical formulas is incorrect?
An empirical formula represents a molecule.
b. An empirical formula gives the smallest whole number ratio of each type of atom
in a molecule.
c. An empirical formula must be multiplied by an integer to obtain the molecular
formula.
d. The molecular formula can be the same as the empirical formula in some-
situations.
e.
All statements are correct.
Answer:
A
Explanation:
The empirical formula won't always represent a molecule if the molecular formula is not the smallest ratio between elements.
Will Mark Branliest!
How many grams are in 4.1 mole sample of CO?
what makes matter change from one state to another?
Answer: Adding or removing energy from matter
Explanation:
which of the following molecular compounds does NOT need the usage of prefix for the first element
SO2
S2O3
N2S
N2S3
Answer:
SO2
Explanation:
that's my answer
Sana mKatolong
What state is represented by the sign (s)
liquid
gas
solid
dissolved in water
solid.
liquid is (l)
gas is (g)
dissolved in water is (aq)
convert 150 K to degrees F
Answer:
150K is 253.67°F
Explanation:
There is a simple formula to convert from Kelvin to Celsuis;
C° = K - 273.15
C = 150 - 273.15 C = -123.15Then you would convert Celsuis into Fahrenheit using the formula:
[tex]F = \frac{9}{5}C + 32\\[/tex]
[tex]F = \frac{9}{5}(-123.15)+32\\F = 221.67 + 32 \\F = 253.67[/tex]Write the chemical formulas and names for the following ionic compounds. Strontium and hydroxide
Answer:
Sr(OH)2
Explanation:
Strontium hydroxide, Sr(OH)2, is a caustic alkali composed of one strontium ion and two hydroxide ions. ... Sr(OH)2 exists in anhydrous, monohydrate, or octahydrate form.
giving brainly if correct and explained
Answer:
D.
Explanation:
A concentrated solution is one that has a lot of solute (the substance being dissolved) in the solvent (the substance doing the dissolving). When a solution is concentrated, it means it has a high ratio of solute to solvent, so the answer is D.
Hope this helps.
What part of the periodic table does the neutrons tell us about the element?
Answer:
The neutrons tell us if it is an isotope or not, they also hold the atom together.
Explanation:
Which one is the answer?
Answer:
I think 1, 4, and 5 are the answers to this question. I am not sure about 4 though.
Explanation:
You have to have a power source (1), you also have to have a way to get that power somewhere else (5), and the reason for 4 would be that the power has to come back through the power source to remain working.
Match each term in the first column with an example in the second column. On a sheet of paper, write the letter of the answer.
1. physical property
2. chemical property
A ability to burn
3. solid
4. liquid
B rust appears on a nail C a puddle freezes
5. physical change
6. chemical change
D substance that has a definite shape and volume
E temperature or density
F substance that has a definite volume, but no definite shape
Answer:
wait can you go more in detail i can help you because i dont understand whats going on
At the end of seafloor spreading, where does the molten rock solidify?
Answer:
As the two plates move apart from each other, which often occurs at a rate of several centimetres per year, molten rock wells up from the underlying mantle into the gap between the diverging plates and solidifies into new oceanic crust. Spreading centres are found at the crests of oceanic ridges.
Explanation:
I found this answer by taking notes in class
Answer:
0k HI! so the answer is A
Explanation:
hope is helpful