Add more chlorine so that chlorine is in excess in the reaction will be the most effective way to decontaminate the water from legionnaires disease.
Define chlorine?With the atomic number 17 and the chemical symbol Cl, chlorine is a class of element. In the periodic table, it is the second-lightest halogen, situated between fluorine and bromine, and most of its properties fall somewhere in the middle of the two. In its natural state, chlorine is a yellow-green gas.The production of rubber, solvents, and pesticides (insect killers) also employ it.However, its primary usage is as a bleach in the creation of paper and textiles. In order to eradicate hazardous bacteria, chlorine is added to swimming pool and drinking water.The weight of chlorine gas is 2.5 times that of air, and it is extremely dangerous. It also has an extremely unpleasant, suffocating odor.To learn more about chlorine refer to:
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What volume of gold would be equal in mass to a piece of copper with a volume of 116 mL?
The density of gold is 19.3 g/mL; the density of copper is 8.96 g/mL.
The volume of gold that will be equal in mass to a piece of copper with a volume of 116 mL would be 53.8528 mL.
Density-related problemThe density of a substance is given by:
Density = mass/volume
Mass of 116 mL copper (the density of copper is given as 8.96 g/mL)
= density x volume = 8.96 x 116 = 1039.36 grams
Now, we are looking for the volume of gold that would be equivalent to 1039.36 grams. The density of gold is given as 19.3 g/mL
Volume = mass/density
= 1039.36/19.3
= 53.8528 mL
In other words, the volume of gold that would be equal in mass to a piece of copper with a volume of 116 mL is 53.8528 mL.
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POSSIBLE PO
11.11 g of urea (NH₂CONH₂) was dissolved in 100 g of water.
Calculate the molarity and molality of the solution. Given N = 14,
H = 1, C = 12, O = 16.
The molarity of the given solution is 1.852 M.
What is moles ?
Chemists use the mole as a key unit of measurement. In the same way that having a dozen eggs means you have twelve eggs, having a mole of anything means you have 602,214,076,000,000,000,000,000 of that specific object. Mole units are used by chemists to quantify extremely small substances, such as atoms, molecules, or other particles.
What is molarity ?
The amount of solute in one mole per liter of solution is known as molarity. For instance, when table salt is dissolved in water, the solute is salt, and the solution is water. 58.44 grams make up one mole of sodium chloride. One molar solution, often known as 1M, is created when 58.44 grams of sodium chloride are dissolved in one liter of water.
Moles of solute(urea) = mass/molar mass
= (11.11 g) /(60g/mol)
= 0.18517 mol
and volume = mass/density = (100 g)/(1 g/ml) = 100 ml = 0.1 L
Hence, molarity = moles of solute/volume(L)
= 0.18517/0.1
= 1.852 M
Therefore, the molarity of the given solution is 1.852 M.
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What percent of the offspring will have green stems in the brassica plant
If the parent plants are both homozygous for yellow stems (gg), then none of the offspring will have green stems (0%).
What is offspring?Offspring is a term used to refer to the children, grandchildren, and other descendants of a person. It is derived from the Latin offsprire, which literally means "to sprout". Offspring are the product of both biological and social relationships, and their characteristics are determined by a combination of genetic and environmental factors. Offspring can have a significant impact on a person's life, both emotionally and financially. They can provide companionship, support, and a sense of continuity for the parent. As such, it is important to nurture and care for offspring with love and respect, and to provide a secure and loving home for them to grow up in.
The percent of offspring with green stems in the brassica plant will depend on the parent plants and the alleles that are present in the offspring. If the parent plants are both homozygous for green stems (GG), then all of the offspring will also have green stems (100%). If the parent plants are heterozygous (Gg) for green stems, then approximately 50% of the offspring will have green stems and 50% will have yellow stems. If the parent plants are both homozygous for yellow stems (gg), then none of the offspring will have green stems (0%).
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If the molecules of a sample speed up what else happens?
If the molecules of a sample speed up, then there will be a corresponding increase in the average speed and kinetic energy of the gas molecules thereby leading to an increase in the reaction rate.
What is Reaction rate?This is referred to as the speed at which a chemical reaction takes place and it is dependent on different types of factors such as temperature, pressure etc.
In a scenario where the molecules of a sample speed up, the kinetic energy of the gas molecules increases and leads to an increase in the pressure which ensures that the reactants are converted to products faster and is therefore the reason why it was chosen as the correct choice.
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A student was asked how to convert the number of particles of a substance to its mass in grams. The student provided the following explanation: To convert the number of number molecules of Bismuth(III) nitrate to moles divide by the molar mass of Bismuth(III) nitrate. Do you agree with the student's explanation? Why or why not?
If a penguin has to walk 70 miles at a rate of .75 meters per secound how many days does it take to make the trip
If a penguin has to walk 70 miles at a rate of .75 meters per second, 66 days do it take to make the trip.
What do you mean by speed ?The term speed is defined as the rate of change of position of an object in any direction. Speed is calculated as follows: speed = distance × time.
The distance traveled in relation to the time it took to travel that distance is how speed is defined. Since speed simply has a direction and no magnitude, it is a scalar quantity.
If you know how far something has traveled and how long it took to get there, you can calculate its average speed.
Time = distance / speed
distance = 0.75 meters
speed = 70 miles = 112.654 kilometres
Substitute this value in above formula
Time = 0.75 / 112.654
= 0.66
Thus, If a penguin has to walk 70 miles at a rate of .75 meters per second, 66 days do it take to make the trip.
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suggest reasons for potential positive and negative effects that a decrease in the kelp density could have on the local abalone shellfish industry.
Unfortunately, commercial kelp harvesting, pollution, and climate change are all threats to kelp forests today.
Why did the kelp population decrease?During 2014-2016, a massive multi-year marine heatwave in the North Pacific was quickly followed by an unusually strong El Nio Southern Oscillation event, resulting in unusually warm ocean conditions that limited nutrients essential for kelp growth.
Many species would be deprived of habitat and protection if kelp forests did not exist. This could result in critically low populations of many fish, invertebrates, birds, and even large mammals.
Thus, The disappearance of the kelp forests affected the populations of many other organisms.
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1) If you had 500 H2 molecules and 1000 O2 molecules, how many water molecules could you produce?
2) If you had 500 H2 molecules , how many O2 molecules would you need to completely react all of the H2 prime?
3) Do not solve the following problem, but explain how it could be answered. 500 g of H2 and 1000 g of O2 are placed in a reaction vessel. How many grams of water could be produced ?
two moles of hydrogen gas produces 2 moles of water. Then 500 molecules of hydrogen will produce 500 molecules of water. Similarly, 500 molecules of hydrogen gas needs 250 molecules of oxygen gas to react.
What is one mole ?Any substance containing 6.02 × 10²³ atoms is called one mole of the substance. This number is called Avogadro number.
The reaction of hydrogen and oxygen giving water can be written as :
[tex]\rm 2H_{2} + O_{2} \rightarrow 2 H_{2}O[/tex]
As per this reaction, two moles of hydrogen gives two moles of water. 2 moles of each contains 2 × 6.02 × 10²³ molecules.
Thus, 500 molecules of hydrogen gives 500 molecules of water.
2 × 6.02 × 10²³ molecules of hydrogen needs 6.02 × 10²³ molecules of oxygen, Then, 500 molecules of hydrogen needs 250 oxygen molecules.
Similarly, 2 moles or 4 g of hydrogen produces 2 moles or 36 g of water. Then 500 g of hydrogen will produce 4500 g of water.
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Please Help ASAP - 100pts + Brainliest!
Answer:
see below
Explanation:
we need to write the formula of aluminium oxide . As we know that the valency of aluminium is 3 and that of oxygen is 2 , therefore we can find its formula by criss cross multiplication as ,
( see attachment)
[tex] Al_2 O_3[/tex]
__
Related info:
1 aluminium atom loses 3 electrons to attain octet configuration, so 2 aluminium atoms will lose 6 electrons. and one oxygen atom gains 2 e- to complete it's octet . So 3 oxygen atoms gain 6 e- from 2 aluminium atoms and form ionic bond.
Which of the following terms means that one inherited allele is dominant and one is recessive? a Codominant b Heterozygous dominant c Homozygous dominant d Polygenic
Heterozygous dominant means that one inherited allele is dominant and one is recessive.
What is heterozygous dominant trait?A pair of alleles is also referred to as being "heterozygous." When you are heterozygous, you have two distinct alleles as opposed to being homozygous. Each parent gave you a different version of themselves. The dominant allele in a heterozygous genotype prevails over the recessive one. As a result, the dominant characteristic will manifest.Even if an individual only possesses one copy of a dominant allele, this condition is still referred to as heterozygosity. For instance, because the gene for brown eyes is dominant, having brown eyes only requires one copy of the 'brown eye' allele (although, with two copies you will still have brown eyes).Learn more about heterozygous dominant refer to :
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Arrange the following atoms (ions) in order of increasing atomic size.
a) Mg2+, Ne, Na+ ,F- ,C4- ,N3- ,O2- ,S2- ,Cl- , Ar
Answer:
Ne < F < O < N < C < Ar < Cl < S < Mg < Na
Explanation:
See pic below for the periodic trend.
Calculate the moles in 7.65x10^23 molecules of O2
The number of moles in 7.65×10²³ molecules of oxygen gas, O₂ is 1.27 mole
How do I determine the number of mole?To obtain the answer to the question above, it is important that we understand the relationship between number of mole and number of molecules. This is given below:
From Avogadro's hypothesis, we understood that
6.02×10²³ molecules = 1 mole of substance.
This implies that
6.02×10²³ molecules = 1 mole of oxygen gas, O₂
With the above information, we can obtain number of moles in 7.65×10²³ molecules of oxygen gas, O₂. Details below:
6.02×10²³ molecules = 1 mole of oxygen gas, O₂
Therefore,
7.65×10²³ molecules = (7.65×10²³ × 1 mole) / 6.02×10²³
7.65×10²³ molecules = 1.27 mole of oxygen gas, O₂
Thus, we can conclude from the calculation above that the number of mole is 1.27 mole
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What is the nature of soil if pH value of soil is 6?
Answer:
strongly acidic
Explanation:
Soils can be classified according to their pH value: 6.5 to 7.5—neutral. over 7.5—alkaline. less than 6.5—acidic, and soils with pH less than 5.5 are considered strongly acidic.
If your typing this I would recommend that you don't copy this word for word because of plagerism I dont want to be the source for that. You may alternate it and put it in your own words tho :)
4. A scuba tank has a pressure of 19,300 kPa and a volume of 10.3 L. What would be the pressure of the gas if it were transferred to a 50.0 L container?
A scuba tank has a pressure of 19,300 kPa and a volume of 10.3 L. 3975.8 kPa would be the pressure of the gas if it were transferred to a 50.0 L container.
What is Boyle's Law?Boyle's Law is a fundamental chemical principle that describes how a gas behaves when it is kept at a constant temperature. At a certain temperature, the volume of a gas is inversely proportionate to the pressure it exerts, according to Robert A. Boyle's 1662 discovery of this law. Boyle's law explains why pressure and volume for a gas at a certain temperature are always inversely related. Human breathing is subject to Boyle's law. According to Boyle's law, when the lungs expand, their volume and pressure change as a result (volume grows, pressure contracts). Since there is less pressure inside the body, air enters the lungs from the outside.
Given that,
Initial pressure (P₁) = 19,300 kPa
Final pressure (P₂) = ?
Initial volume (V₁) = 10.3 L
Final volume (V₂) = 50.0 L
Now, as we know
P₁V₁ = P₂V₂
19,300 × 10.3 = P₂ ×50.0
or, P₂ = 3975.8 kPa
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The plasma membrane is made up of molecules in two layers which we call the ________________.
The layers are made of molecules called __________________.
They have a _________ and ____________.
Which part of the molecule faces out towards the cytoplasm?________________________________
Explore (pg. 5)
How do molecules get inside and outside the cell?______________________ or ______________________
To bring something inside the cell, it is called________________________
To bring something outside the cell, it is called
________________________________________
Explore (pg. 6)
Two types of transport ___________________________ or ____________________________
Which one does not require energy?_________________________________
In the one that does not require energy, the move across a _______________________________________________________.
They move from _____________ concentration to _____________________ concentration.
The goal is to have the molecules _______________________ over time on both sides of the concentration gradient.
Answer:
The plasma membrane is made up of molecules in two layers which we call the phospholipid bilayer. The layers are made of molecules called phospholipids. They have a hydrophobic (water-fearing) tail and hydrophilic (water-loving) head.
Which part of the molecule faces out towards the cytoplasm? The hydrophobic tail
Explore (pg. 5)
How do molecules get inside and outside the cell? Active transport or passive transport
To bring something inside the cell, it is called endocytosis
To bring something outside the cell, it is called exocytosis
Explore (pg. 6)
Two types of transport: passive transport or active transport
Which one does not require energy? passive transport
In the one that does not require energy, the move across a concentration gradient.
They move from high concentration to low concentration.
The goal is to have the molecules evenly distributed over time on both sides of the concentration gradient.
Explanation:
Hey I think this the answer hope this helps you
When looking through a microscope, which organelles would make it clear that you were looking at a plant cell? Hint: which ones are specific to plant cells :)
__________________________________ and ________________________________________.
When looking through a microscope, which organelles would make it clear that you were looking at an animal cell? Hint: Which ones are specific to animal cells :)
____________________________________________________________________________________.
Cells have _________________________________________ to help it perform specific functions.
______________________________________ is the organelle that converts energy to a useable form for the cell.
This organelle resembles the circulatory system because it carries nutrients to other areas of the cell. What is it?____________________________________________________________________
This organelle provides support to the cell in a plant cell. What is it?_______________________________________________________________________________
If you were a scientist and wanted to learn more about the DNA of a plant or animal cell. Where would you look? Hint: Which organelle would it be within?
________________________________________________________________________________
Answer: Cell Membrane, and Central Vacuole
Microtubules, and Lysosome
Nuclei
Mitochondrion
Cytoplasm
Cell membrane
In the Endoplasmic Reticulum
Explanation:
If you look at the basic cell structure of both an animal and plant cell ou will see that there are many things that are unique to both.
What is the mass of one mole of oxygen gas? Show all calculations
Can someone please help me answer 3 and 5 and then make sure number 4 is correct?
About 2 aluminum cans are needed to make 1 mole of aluminum atoms.
What is 1 mole of aluminum?The mass in grams of one mole of Al atoms is numerically equal to the atomic mass of aluminum. According to the periodic table, the atomic mass of Al (rounded to the second decimal place) is 26.98, so 1 mol of Al atom has a mass of 26.98 g.Mass of 1 mole of aluminum atom = {13 × mass of each electron + 13 × mass of each proton + 14 × mass of each neutron} × Avogadro constant = 3 × mass of each electron × Avogadro's constant.A mole is the amount of matter (10) containing 6.02214 × 1023 particles. 1 mole = 6.02214 × 1023 particles. This number is also called Avogadro's number ...... Note that the definition of mole is the amount of substance.To know more about mole visit:.
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