Answer:
I believe 83.33 mL is needed. :)
Calculate the molar mass for NaOH
Answer:
39.998 g/mol
Explanation:
Hello, have a periodic table handy!
Molar mass is the molecular weight of a compound; sum of all of the mass in grams (from the periodic table) from each and specific atom.
In the periodic table, the molecular weight of an atom is usually shown on the bottom of the element.
In NaOH, there are three atoms in that compound. Na (sodium), O (oxygen), and H (hydrogen).
For Na, the molecular weight is 22.99g/mol (grams per mole)
For O, the molecular weight is 16.00g/mol
For H, the molecular weight is 1.008g/mol
Add all of those values up together to get the molar mass of NaOH being 39.998g/mol.
How has genetic modification most likely affected the safety and availability of fruits and vegetables?
Answer:
Genetic modification most likely affected the safety and availability of fruits and vegetables by potentially causing infertility, immune problems, and allergic reactions.
What is the melting point of ammonia?
-107.9°F is the melting point
Answer: -107.9°F
Explanation: Hopefully this helped have a blessed and good day!
What is the momentum of a car with a
mass of 1000 kg traveling at the speed of 2 m/s?
Answer:
The answer is 2000 kgm/sExplanation:
The momentum of an object can be found by using the formula
momentum = mass × velocityFrom the question
mass = 1000 kg
speed = 2 m/s
We have
momentum = 1000 × 2
We have the final answer as
2000 kgm/sHope this helps you
what is electron also what is the meaning of civil rights also what is a force
Answer:
what is electron?electrone is a subatomic particle whose electric charge is negative one elementary charge.
what is the meaning of civil rights?civil rights are the rights that people have to equal treatment and equal opportunities.
what is force?in physics, force is an influence that can change the motion of an object.
When referring to bacteria cells, a plasmid
is not naturally occuring.
does not code for proteins.
is the large bacterial chromosome contained in the nucleoid.
is composed of double-stranded RNA.
is a small, circular double-stranded DNA molecule that replicates autonomously.
Answer:
is a small, circular double-stranded DNA molecule that replicates autonomously.
Explanation:
hope this helps
Given the reaction fe o2 right arrow. fe2(3 )o3(2-), what happens to the oxidation states of these elements? fe o
The oxidation state of iron changes from 0 to +3, and of oxygen changes from 0 to -2.
What is oxidation state?Oxidation state of any atom will tells about the number of exchangeable electrons.
Given chemical reaction is:
Fe + O₂ → Fe₂O₃
Initially in the reactant form, oxidation state of iron (Fe) atom and oxygen (O₂) molecule is zero as they are in elemental form. Oxidation state of 2 iron atoms in the product (Fe₂O₃) is +3 as it is combined with the 3 atoms of oxygen whose oxidation state is -2.
Hence, oxidation state of Fe and oxygen changes as we going from reactants to product side.
To know more about oxidation state, visit the below link:
https://brainly.com/question/8990767
Answer:
B and A
Explanation:
How long would a sample of 26g of Nickel-63 take to decay down to
6.5g?
GIVING BRAINLY TO CORRECT ANSWER !!
How would one convert 5 decades to months
HELP ME, HOW? Draw on the graph a line that shows the car decelerating steadily to a stop from point D in 10 s. Mark the point where the car has stopped as point F.
Answer:
There is no deacceleration.
Explanation:
Let's check relation between velocity and acceleration
[tex]\\ \rm\Rrightarrow a=\dfrac{dv}{dt}[/tex]
[tex]\\ \rm\Rrightarrow a\propto dv[/tex]
So as velocity graph is going up acceleration is going up
Those flat lines on graph shows constant acceleration .
Curve lines up shows instantaneous acceleration.
If the graph is going down then it can be deacceleration .
Note :-No F is present in graph
Answer:
Explanation:
The car decelerates steadily to a stop so the line showing the deceleration will be a straight line from point D.
D is at 60s so 10s from D will be 70s. The car stops so velocity will be zero.
Based on the above, the line should look something like in the attached picture.
60 points! please answer will mark brainliest! thank you!
Sunlight shining through a clear window hits Jeremy's face while he does his homework. He uses a large wooden block to cover the
window. What do the wooden block and the clear window demonstrate?
A)
Visible light can be transmitted only through certain materials
B)
Visible light can be completely absorbed by all materials.
C)
Visible light can be transmitted through all materials.
D)
Visible light can be completely reflected by all materials
Answer:
A.Visible light can be transmitted only threw certain materials
Explanation:
Because I had this question on study island and I got it right lol
Answer:
A
Explanation:
Visible light can be transmitted only through certain materials
This is correct I just did the problem
How are compounds with ionic and covalent bonds alike?
A.Both conduct electricity when dissolved in water
B.Both are made up of metals
C.Both have at least some
compounds that can dissolve in water
D.Both have high melting points
Answer:
B
Explanation:
Individual cells do not need to maintain homeostasis.truefalse
Answer:
The answer is
→ False.
Explanation:
Without homeostasis, cells can't build up body systems which require homeostasis. Without homeostasis, body systems can't be created and life on Earth would be impossible without homeostasis.
An old iron battery was discarded in this meadow. The iron in the battery is undergoing a ____ change as it rusts. The rusting is changing the battery's color from black to orange. A) physical B) chemical C) environmental D) none of these changes are occurring
Answer:
chemical
Explanation:
A chemical change is irreversible and leads to the formation of new products.
Rusting occurs as a result of an irreversible chemical reaction between iron, oxygen and moisture. Rusting is the oxidation of iron when exposed to oxygen and moisture.
The rusting of iron is an electrochemical process in which water serves as the electrolyte and iron serves as the anode. The rusting of iron leads to the formation of hydrated iron III oxide (rust) usually seen an brown flakes that surround a rusted iron material.
Which of the following could make a decomposition reaction occur?
heat or light
time
nothing needed for most to proceed
Heat or light could make a decomposition reaction occur. Therefore, option (A) is correct.
What are decomposition reactions?
The decomposition reactions can be described as in which one reactant breaks into one or more products during the reaction.
The decomposition reaction can be represented as the following equation:
AB → A + B
Where AB is the parent molecule that acts as a reactant and gives A and B as products.
A decomposition reaction can be possibly an exothermic reaction or endothermic reaction. Thermal decomposition reactions are those in which the energy is supplied to reactant molecules for the decomposition.
For example, the decomposition of calcium carbonate is a thermal decomposition reaction. In the products, carbon dioxide gas and calcium oxide are produced. The decomposition of ozone gas occurs in the presence of light.
Therefore, heat or light can make the decomposition reaction take place.
Learn more about decomposition reaction, here:
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May someone Please help me with this science question!
Love:
C A I L Y N N
Question 8 of 10
Which is the same as 10 x 10 x 10?
A. 103
O B. 102
C. 10
O D. 1010
We know
a×a=a^2Now
[tex]\\ \sf\longmapsto 10(10)(10)[/tex]
10 is 3times[tex]\\ \sf\longmapsto 10^3[/tex]
Option A
can someone tell me how to differentiate if a given salt is acidic, basic, or neutral?
[tex]\bold{\huge{\underline{ Solution }}}[/tex]
Basic Characteristic of acids Acids are sour in taste Acid turns blue litmus paper or solution into red litmus paper or solution Acids are good conductor of electricity because it dissociate into cation in aqueous solution Acids classified into edible acids and non edible acids. Non edible acids are very hazardous Generally, All acids are soluble in water Acids have PH smaller than 7Arrhenius definition of acids :-
According to Arrehinus,
Acids are those substances which when dissolve in water given H positive ions . Then, this hydrogen ions combine with water to form H30 + ionsSecond definition of Acids was given by Bonsted Lowry :-
According to Bonsted Lowry
Acids are the proton donors that is when acids dissociate into water gives hydrogen ions that is H+ ions3rd definition was given by Lewis
According to Lewis
Acids are those substances which have the ability to accept a pair of electrons .Example of Acids
HNO3 :- Nitric acid H2SO4 :- Sulfuric acidHCl :- Hydrochloric acid Basic characterists of bases Bases are bitter in taste Bases turns red litmus paper into blue litmus paper or solution Bases are also good conductor of electricity because on dissociation it produces anion in aqueous solution Bases are also good conductor of electricity When bases are soluble in water then they are known as alkaline baseBases have PH greater than 7Arrehinus definition of bases :-
According to Arrehinus ,
Bases are those substances which when dissolve in water produce OH negative ions that is hydroxide ionsBonsted Lowry definition
According to Bonsted Lowry
Bases are the proton donors as they produce OH negative ions in dissociation in aqueous solutionLewis definition
According to Lewis
Acids are those substances which have the ability to lose electrons that is they are electron donors.Example of bases
Ca(OH)2 :- Calcium hydroxide NaOH :- Sodium hydroxide KOH :- Potassium hydroxide[ Note :- There are so many Lewis acids and bases but they are not Arrhenius or Lowry acids or bases ]
Basic characteristic of salt Salts are the ionic compounds which are composed of acids and bases that cation and anion Salts are generally found in oceans and seas in the forms of crystals As they are composed of acids and bases so they are neutral in nature but the salt of strong acid or weak base is acidic in nature or vice versa Salts are also good conductor of electricity as they form ionic bond Generally, All salts are soluble in water.The PH of common Salt is 7Example of salts
NH4Cl :- Ammonium chloride CuSO4 :- Copper sulphate NaCl :- Sodium chlorideWhat is the correct name for this compound?
B2H3
Answer:
i hope Boron oxide is the name you're looking for.
Calculate the pH of a 6.3x10-8M solution of H3O+
Considering the definition of pH, the pH of a 6.3×10⁻⁸ M solution of H₃O⁺ is 7.2.
Definition of pHpH is the Hydrogen Potential. It is a measure of acidity or alkalinity that indicates the amount of hydrogen ions present in a solution or substance.
Mathematically, pH is calculated as the negative base 10 logarithm of the activity of hydrogen ions:
pH= - log [H⁺]= -log [H₃O⁺]
The numerical scale that measures the pH of substances includes the numbers from 0 to 14. The pH value 7 corresponds to neutral substances. Acidic substances are those with a pH lower than 7, while basic substances have a pH higher than 7.
pH in this caseIn this case, you know that [H₃O⁺]= 6.3×10⁻⁸ M. Replacing in the definition of pH:
pH= -log (6.3×10⁻⁸ M)
Solving:
pH=7.2
Finally, the pH of a 6.3×10⁻⁸ M solution of H₃O⁺ is 7.2.
Learn more about pH:
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Which statement describes an advantage of asexual reproduction? Asexual reproduction results in variations in DNA. Asexual reproduction causes less Competition for resources. Asexual reproduction is faster than sexual reproduction. Asexual reproduction requires more energy than sexual reproduction.
Answer:
Asexual reproduction is faster than sexual reproduction
Answer:
Asexual reproduction is faster than sexual reproduction which is d
Explanation:
What chemical equations must be balanced to satisfy ?
Answer:
the law of conservation of matter
Explanation:
that states that matter cannot be produced or destroyed in a closed system. The law of conservation of mass governs the balancing of a chemical equation.
Hey guys I'm under a lot of pressure to finish my Chemistry assignment before the term ends, and help will be appreciated even if you answer just one.
1. What is the pressure on a gas at 350. K if the pressure is 2.62 atm at 300. K?
2. The volume of a gas at 298K is 0.346 L when the pressure is 201 kPa, what will the volume be when the pressure is 152 kPa at 298K?
3. In a rigid, 6 L container, the pressure of N2 gas is 0.592 atm at 305 K, what temperature will the gas be if the pressure is 0.891 atm?
4. The pressure of a sample of CO2 was 2.00 atm when the temperature was 30.45 ℃, what will the pressure be if the temperature of the sample is heated to 92.01℃?
Explanation:
Hello
I answered all your questions And I explained it to you in the photo sent.
Good luck
(Will give brainlest if right)Which substance can be broken down chemically ? A) Ammonia B)aluminium C)Argon
Answer:
i believe its b but i could be wrong
Someone Please Help Me out
Answer:
where are u stuck ????
Explanation:
tell us fast
Can somebody try and answer 1 of these questions also for 5 answer in 3 sentences thx!!!!
(Will mark as brainliest) promise
:D
Answer:
Comparative Anatomy:
5. Comparative anatomy is the comparative study of the body structures of different species of animals in order to understand the adaptive changes they have undergone in the course of evolution from common ancestors.
One way whales are different from fish is:
1) Whales actually breathe air with lungs using their blowholes to breath out!. Fish get oxygen directly from the water through their gills.
Hope this helps! :D
Y’all answer as many as u can they just need to be correct thx!!!!
(WILL MARK BRAINLIEST)
(you can use google) it didn’t help me tho :(
Answer:
10. Embryology is the branch of biology and medicine concerned with the study of embryos and their development.
11. I think the answer is, Both humans and whale embryos have a tail and a backbone (I'm not sure).
12. Basilosaurid, any member of the family Basilosauridae, an early group of whales that lived from the middle Eocene to the late Oligocene Epoch (about 41 million to 23 million years ago).
13. Protocetids had long snouts, large eyes, and their nasal opening was farther caudally than in earlier archaeocetes.
14. Two ways we know that Maiacetus was a whale re:
1) Their skeletons have all been found among fossils of sea-creatures which suggests they lived in the sea.
2) Their hip bones were strong enough to walk on land, but their short legs combined with long flat fingers and toes suggest they would have had difficulty walking.
15. The name Maiacetus means Mother Whale. Maiacetus is significant because of how well the skeletons were preserved.
Hope this helps! :D
Several models of atoms are mentioned in this lesson. Plum pudding, planetary and quantum mechanical. Which reason below explains why there are different atom models?
Because atoms have changed their structure over time
Because there are different types of atoms
Because the ideas about the models changed as more discoveries were made about the atom
Because many people came up with models at the same time
Answer:
Because the ideas about the models changed as more discoveries were made about the atom
Explanation:
I know because i took this test and made a 100% on it
hope I was helpful :)
What is the volume of 1 mole of gas at Standard Temperature and Pressure (STP)?
Explanation:
[tex]22.4 lit[/tex]