a. Mole to mole ratios relate the number of moles of any substance in a balanced chemical reaction. They are based on the balanced chemical equation.
What is the boiling point of a solution containing 3.75 grams magnesium hydroxide in 100.0 g of water?
What are the safety precaution you must do to avoid contamination of the specimen in microscope?
Answer:
Clean the microscope after each use. ...
Handle glass slides carefully. ...
Turn off the light source when the microscope is not in use. ...
Be aware if your microscope has a mercury lamp. ...
When carrying the microscope, always use two hands with one hand supporting the base and theother hand holding the arm.
Explanation:
:)
Explain solubility of sugar and carbon dioxide in water
Answer:
Sugar and carbon dioxide have different solubilities in water due to their different chemical properties and intermolecular forces.
Sugar (sucrose) is a polar molecule that can form hydrogen bonds with water molecules. This allows sugar to dissolve readily in water, as the water molecules surround the sugar molecules and form a solution. However, the solubility of sugar in water is limited, as the water molecules can only form a certain number of hydrogen bonds with the sugar molecules. This is why, for example, if you add too much sugar to a cup of water, the excess sugar will not dissolve and will settle at the bottom of the cup.
Carbon dioxide (CO2), on the other hand, is a nonpolar molecule that does not have a charge distribution that allows it to interact strongly with water molecules through hydrogen bonding. Instead, carbon dioxide dissolves in water through weak intermolecular forces, such as van der Waals forces, which arise from temporary dipoles that form as the molecules move and interact with each other. These weak interactions make carbon dioxide only moderately soluble in water, and the solubility decreases as the temperature increases or the pressure decreases.
In summary, the solubility of sugar and carbon dioxide in water depends on the chemical properties and intermolecular forces of the substances, with sugar being more soluble due to its polar nature and ability to form hydrogen bonds with water, and carbon dioxide being less soluble due to its nonpolar nature and weak intermolecular interactions with water.
Explanation:
An energy drink contains 106 calories for 8oz. How many calories are in a larger 12oz can of the drink?.
A bigger 12 ounces of something like the drink contains 159 calories, according to the provided statement.
What do food calories mean?Calories are the units of energy used by your body during food digestion and absorption. A meal might provide your body extra energy if it has more calories. Your body stores excess calories and body fat when you consume more nutrients than you need. Even foods without fat might have a number of fat.
The 106 calories per 8 ounces of a clean energy drink are advertised.
Consequently, 106/8 = 13.25
Thus 13.25 calories per ounce.
13.25 * 12 = 159
The drink has 159 calories per 12 ounces.
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The complete question is-
A new energy drink advertises 106 calories for 8 oz. How any calories are in 12 oz of the drink?
PLEASE HELP ASAP 30 POINTS!!!!
Voltage ______
Question 1 options:
causes current
pushes free electrons around a circuit
is measured in Volts
all of the choices
how many moles of CO2 are in 66.0g of CO2
Answer:; 66 g is about 3/2 the value of the molar mass of CO2. It is reasonable that the sample contains 3/2 (1.5) mol.
Explanation:
the third law of thermodynamics describes the entropy of a: select the correct answer below: solid liquid gas all of the above
The third law of thermodynamics describes the entropy of a: solid.
The third law of thermodynamics states that the entropy of a pure crystalline substance approaches zero as the temperature approaches absolute zero (0 Kelvin or -273.15 degrees Celsius). This law implies that at absolute zero, a perfectly ordered and pure crystalline solid will have zero entropy.
The third law of thermodynamics is not specific to liquids or gases but applies to solids. In a solid, the molecules are highly ordered and have fixed positions in a regular lattice structure. As the temperature decreases towards absolute zero, the thermal motion of the molecules reduces, and the system becomes more ordered, resulting in a decrease in entropy.
In contrast, liquids and gases have higher entropy compared to solids at absolute zero because their molecules have more freedom of movement and are not as tightly arranged. Therefore, the third law of thermodynamics specifically addresses the entropy of solids and does not apply to liquids or gases.
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Polarities of analyte functional group increase in the order of hydrocarbon ethers < esters
The correct order of the increasing polarity of the analyte functional group isEthers < Esters.
The given statement is "Polarities of analyte functional group increase in the order of hydrocarbon ethers < esters." The order of polarities of functional groups is the order of their increasing polarity (i.e., less polar to more polar) based on their electron-donating or withdrawing ability from the rest of the molecule.Polarity of analyte: The analyte's polarity is directly proportional to the dipole moment of the functional group, which is associated with a difference in electronegativity between the atoms that make up the functional group.The electronegativity of an element is its ability to attract electrons towards itself. The greater the difference in electronegativity between two atoms, the more polar their bond, and hence the greater the polarity of the molecule.
To find the correct order of the increasing polarity of the analyte functional group, let's first compare the two groups: hydrocarbon ethers and esters. Here, esters have a carbonyl group while ethers have an oxygen atom with two alkyl or aryl groups. The carbonyl group has more electronegative oxygen, which pulls electrons away from the carbon atom, resulting in a polar molecule. On the other hand, ethers have a less polar oxygen atom with two alkyl or aryl groups, making them less polar than esters. Therefore, the correct order of the increasing polarity of the analyte functional group isEthers < Esters.
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Which of these figures correctly illustrates the nature of the bonding of h2o?.
H2O is composed of two hydrogen atoms and one oxygen atom. The central oxygen atom is sp3 hybridized.
H2O is composed of two hydrogen atoms and one oxygen atom. The oxygen atom is bonded to the two hydrogen atoms at a dihedral angle of 104°. There are two lone pairs on the oxygen atom. The molecule has a bent geometry.
The structure of H2O is shown in the image attached to this answer. The central oxygen atom is sp3 hybridized and the shape of the molecule is based on a tetrahedron owing to its electron pair geometry.
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an irregularly-shaped piece of aluminum (al) has a mass of 88.3 grams. what is the volume in cm³ of this piece of aluminum if its density is 2.70 g/cm³?
Therefore, the volume of the irregularly-shaped piece of aluminum is 32.7 cm³
To find the volume of the irregularly-shaped piece of aluminum, we can use the formula:
Density = Mass / Volume
Rearranging the formula to solve for volume, we get:
Volume = Mass / Density
Plugging in the given values:
Volume = 88.3 g / 2.70 g/cm³
Simplifying the equation:
Volume = 32.7 cm³
Therefore, the volume of the irregularly-shaped piece of aluminum is 32.7 cm³.
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PLEASE answer this Quick!! I have to submit this in a HOUR!!!!! -
Describe the relationship between the state of matter of water (gas, liquid, solid) and the motion of the water molecules
I Will give 30 POINTS!!
Answer:
Solid turns to liquid and liquid to gas
Explanation:
ice cube to water, water to carbon
If the concentration of a dilute solution of nitric acid is 0.0001 m, what is the ph of that solution?
if a diluted nitric acid solution has a concentration of 0. 0001 M. The solution's pH value is 4.
What exactly is pH?
The pH scale, which ranges from 0 to 14, is used to determine whether a material is acidic, basic, or neutral.
How can I determine the pH of a solution?
The hydrogen ion is represented to compute the pH. Here it is expressed:
pH = - log[H⁺]
Therefore, in case of the nitric acid(HNO₃) ,the concentration of hydrogen ion = 0.0001 M.
So, pH = - log[0.0001]
⇒pH = -log(1/10000)
⇒pH = -log(10)⁻⁴
⇒pH = -4 x -log(10)
⇒pH = -4 x (-1)
⇒pH = 4
Therefore it is concluded that the pH of the nitric acid solution is 4.
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acid rain falling on seawater has little effect on the ph of the oceans.
true or false
The statement ,"Acid rain falling on seawater has little effect on the ph of the oceans." is: False.
Acid rain falling on seawater can have a significant impact on the pH of the oceans. The pH of the ocean is normally around 8.1, which is slightly alkaline.
When acid rain falls on seawater, it increases the acidity of the water by adding hydrogen ions, which can lead to a decrease in pH. This can have negative impacts on marine life, as many organisms are adapted to live in a specific pH range.
For example, acidification can make it more difficult for some marine organisms to form shells, and can also affect their ability to reproduce and grow.
Acid rain can also lead to the release of toxic metals such as aluminum, which can have harmful effects on marine organisms.
While the effects of acid rain on the ocean are not as well-known as its effects on land, they are still a cause for concern and research in this area is ongoing.
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The atomic mass of iron is 55.85, and oxygen is 16.0. What is the mass of 6.02 × 1023 molecules of Fe2O3?
Answer:159.7grams
Explanation:
(55.85)2+(16)3
159.7grams
Answer:
The correct answer for plato/edmentum is C (159.7g)
Who would be considered an intrapreneur? when they res working in labs. orgarizations, such as sperti foamt. working with members of the Arat Amefican commurity.
An intrapreneur is an individual who exhibits entrepreneurial qualities and behaviors within an established organization.
They are often innovative, creative, and take initiative to develop and implement new ideas, products, or processes within the company. In the context you provided, someone working in labs or organizations, such as Sperti Foamt, and collaborating with members of the Arab American community can be considered an intrapreneur if they are actively seeking opportunities to drive positive change, bring about innovation, and create value within their organization. The practise of acting like an entrepreneur while employed by a huge corporation is known as intrapreneurship. Intrapreneurship is defined as the use of a corporate management style that combines risk-taking and innovative approaches, as well as the rewards and motivating strategies that are more typically associated with entrepreneurship.
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A compound was found to have a Ka value of 1.2 after calculation. Identify this compound
A weak base
B strong base
C string acid
D weak acid
The compound that is found to have a dissociation constant Ka value of 1.2 after calculation is a strong acid. Hence, C is the correct option.
Generally, the acid dissociation constant (Ka) is used for differentiating strong acids from weak acids. Strong acids usually have exceptionally higher values for Ka. Basically the value of the dissociation constant is determined by analyzing the equilibrium constant for the dissociation of the acid. It has been proven that, the higher is the value of Ka, the more the acid dissociates.
Ka or dissociation constant is generally used to estimate the strength of an acid so, if Ka is high, the acid is largely dissociated and therefore the acid is powerful or strong. Therefore, strong acids have a Ka greater than 1. Hence, C is the correct option.
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What is the volume of a rock that has a mass of 50 grams and a density of
5 g/ml?
Explanation:
density = mass/ volume
so,
volume = mass/ density
volume = 50 g/ 5 g/ml³
volume = 10 ml³
4 Part of a human body system is pictured.
-Kidney
Ureter
Bladder
The main function of this system is to
F control reproduction
G transport oxygen
H produce hormones
J remove waste
Kidney in our body functions as a sieve in to remove wastes. Ureter, bladder and kidney as well are part of excretory system in animals. Hence, option J.
What is excretory system?Human body contains a group of organ systems to perform specific functions. Excretory system is an organ system for the excretion or removal of wastes after digestion form the body.
The main component of excretory system is kidney by which the wastes from the circulatory system is removed through urine. Ureter and bladder are extensions of kidney. After absorption of water and other nutrients remaining uric acid or urine is stored in the bladder to remove.
Kidney contains a number of sieve like structures called nephrons they are the filtering units of kidney.Nephrons are microscopic structural units of kidney by which wastes are filtered to produce urine and remove.
Therefore, all the given organs, kidney, ureter, bladder etc are part of excretory system and they plays a role in removing wastes from the body. Hence, option J is correct.
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How many lengths did secretariat win the kentucky derby by
Secretariat won the reactant Kentucky Derby by 31 lengths. This margin of victory is still a record for the Kentucky Derby and is unlikely to be broken anytime soon.
Secretariat's win in the 1973 Kentucky Derby is considered one of the greatest performances in horse racing history. He pulled away from the pack early in the race and continued to increase his lead, winning by an astonishing 31 lengths. This margin of victory is still a record for the Kentucky Derby and is unlikely to be broken anytime soon.
Secretariat, an American Thoroughbred racehorse, competed in the 1973 Kentucky Derby. He won the race by 2.5 lengths, setting a new track record of 1 minute and 59.4 seconds. This remarkable achievement contributed to Secretariat's legacy as one of the greatest racehorses in history.
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Changes in either _______ or _______ can cause a change in the state of matter.
A. Temperature or Pressure
B. Temperature or Matter
C. Matter or Pressure
Answer:
A. Temperature or Pressure
Explanation:
When European demand for a certain solvent declined, Dow Chemical instructed its German plant to switch to manufacturing a chemical that had been imported from Louisiana and Texas. Dow Chemical would be best described as a(n)
Dow Chemical would be best described as a multinational corporation in this scenario.
What is a Multinational corporation?
This is the type of corporation which are involved in controlling production of goods and services in at least one country different from that of residence.
Dow chemical is known to have a plant in Germany and Russia thereby making it a multinational corporation.
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what does le chateliter's principle state
How are science and technology related
There is no answer, science is about empirical knowledge, technology is the sum of techniques, skills, methods, and processes. I do not believe that you will find a answer for that.
which best defines what a mole represents in chemistry?
A mole is defined as 6.02214076 × 1023 of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.
The mole, symbol mol, is the unit of amount of substance in the International System of Units (SI). The quantity amount of substance is a measure of how many elementary entities of a given substance are in an object or sample. The mole is defined as containing exactly 6.02214076×1023 elementary entities.
The name has nothing to do with the animal whatsoever. German chemist Wilhelm Ostwald generally gets the credit for introducing the word. Ultimately, though, the word mole comes not from German but from the Latin word moles, which means “a mass” .
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what special equipment did niels bohr use to develop his atomic model?
Neil Bohr used the fluorescent screen and an alpha particle detector to study the structure of an atom.
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.
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.
The atom as a whole is neutral and stable due to presence of oppositely charged particles.
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please help asap in 10 mins
What are the conditions necessary for electro-chemical corrosion to occur?
Answer:
Presence of an Electrolyte
Metal Surface
Oxygen or Other Oxidizing Agent
Difference in Potential
Electrochemical Pathway
Explanation:
solve this questions please
Answer:
A
Explanation:
A solid that dissolves in water produce alkaline solutions
ex. sodium reacts with water to form sodium hydroxide – caustic soda
naturally occuring element x exists in three isotopic forms: x-28 (27.343 amu, 67.14% abundance), x-29 (28.889 amu, 10.50% abundance), and x-32 (31.993 amu, 22.36% abundance). calculate the average atomic weight of x. please enter your answer to 4 significant figures.
The naturally occurring the element x exists in three isotopic forms. The average atomic weight of x 28.544 amu.
Given that :
x- 28, Abundance % = 67.14 % = 0.6714
The atomic mass = 27.343 amu
x-29, Abundance % = 10.50 % = 0.1050
The atomic mass = 28.889 amu
x- 32, Abundance % = 22.36 % = 0.2236
The atomic mass = 31.993 amu
The average atomic weight = ( 27.343 × 0.6714 ) + ( 28.889 × 0.1050) +
( 31.993 × 0.2236)
= 18.358 + 3.0333 + 7.153
= 28.544 amu
Thus, the average atomic weight of naturally occurring element x exists in three isotopic forms 28.544 amu.
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PLEASE HELP! ILL GIVE 40 PTS I REALLY NEED THIS!
how can codominant traits benefit a population?
And
how can incomplete dominant traits benefit a population?
HELPP
Answer:
Both co-dominance and incomplete dominance produce organisms that are different from the common population. Therefore, the possible benefits associated with co-dominance and incomplete dominance are the increase in the fitness of an individual and in the genetic diversity of a population.
Explanation:
and this is 5 points
Answer:
yes
Explanation:
yes
hi !!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Hahaha hey! What’s up!