Answer:
C 1.0 x 10-14 mol/L
Explanation:
also do you do connections academy?
starting with 500.4 of glucose, what is the maximum amount of ethanol in grams and i'm liters that can be obtained by this process( density of ethanol=0.789 g/mL
Which describes why liquid moves through a straw?
A. The straw allows a method of escape for the liquid in the glass.
B. The liquid inside the straw has a higher pressure than the air outside, so it draws the air in.
C. The air pressure creates a vacuum in the straw that pulls the air into the liquid.
D. The atmosphere pushes down on the liquid in the glass causing it to rise in the straw.
Answer:
C.
The air pressure creates a vacuum in the straw that pulls the air into the liquid.
A liquid has a density of 270 g/L. What would its density be in kilograms per gallon?
Answer:g
Explanation:
g
The Law of Conservation of Energy states that energy cannot be created or _____.
Question 1 options:
destroyed
enlarged
changed
broken
Answer:
Destroyed.
Explanation:
The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another.
PLEASE HELP ME WITH THISSSS!!!
Match its item to its best description
accretion disk- does not spin
solar system- a central star with planets around it
solar nebula- may form after a supernova
Hope this helps!!
Please help I will mark brainlist
- answer & explain how u did that
[ lesson : molarity ]
18) What is the molarity of a bleach solution containing 9.5 g of NaOCI per liter of bleach?
19) How much calcium hydroxide (Ca(OH)2) in grams, is needed to produce 1.5 L of a 0.25M solution
Answer:
Q1) 0,1276 M
Molair mass of NaOCl = 74,44 g/mol
You have 9,5 g/L.
You need to calculate with the molar mass, how many moles 9,5 g are:
9,5 g / 74,44 g/mol = 0,1276 molAR
0,1276 mol / 1 L = 0,1276 M
Q2) 27.78 grams
The mass ca(Oh)2 needed to produce 1.5 l of 0.25 solution is calculated as follows
find moles
=moles = molarity x volume
moles is therefore = 1.5 x 0.25 = 0.375 moles
mass = moles x molar mass
0.375mol x 74.09 g/mol = 27.78 grams
Explanation:
NOW MARK ME AS THE BRAINLIEST
can someone help me pls
Answer:
I dont understand what the question means
Explanation:
A particular beer is 6.50 % ethanol by volume . If a single bottle of beer contains a total of 750.0 mL of beer, what volume, in mL of ethanol (C2H6O), are present in the bottle?
This question involves the simple concept of percent by volume in a solution.
The volume of ethanol present in the bottle is found to be "48.75 ml".
The percent by volume of a solution means the amount of that substance present in the solution, represented as a fraction of the total volume of the solution. Hence, the volume of ethanol present in the bear can be found by using the following formula:
[tex]Percent\ by\ Volume\ of\ Ethanol = \frac{Volume\ of Ehanol}{Total\ Volume\ of\ Beer}(100\ \%)\\\\6.50\ \% = \frac{V}{750\ mL}(100\ \%)\\\\V = \frac{(6.50\ \%)(750\ mL)}{100\ \%}[/tex]
V = 48.75 mL
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Which of the following levels of organization is the largest
•organ
•organ system
•tissues
•atom
Answer:
Organ system
Explanation:
30 points for you if anyone answers with an explained answer ill mark you Brainliest!
Answer:
g/kg
Explanation:
they are both a unit of weight
notice how the others have a unit of weight and then measurement? g/kg are two units of weight
PLEASE GIVE BRAINLIESTAnswer:
Grams/kg
Explanation:
Please help it's due today
Answer:
.
Explanation: man that's okay
What is the pH of a buffer made by combining 10.0mL of 0.51 M CH3NH2 with 10.0 mL of 0.61 M CH3NH3Cl? Kb CH3NH2 = 4.4 x 10-4
Answer:
10.57
Explanation:
pOH = pKb + log(acid/base)
write all of the allowed sét of quantum numbers for a 3p orbital
Answer:
Which of the following is a possible set of quantum numbers for a 3p orbital?
Since you are dealing with a 3p-orbital, your principal and angular momentum quantum numbers will be n=3 and l=1 .
solar radiation process explained
Answer:
Solar radiation is radiant energy emitted by the sun from a nuclear fusion reaction that creates electromagnetic energy. About half of the radiation is in the visible short-wave part of the electromagnetic spectrum. The other half is mostly in the near-infrared part, with some in the ultraviolet part of the spectrum.
Explanation:
Hope it helps
stan twice
PLEASE HELP ME WITH THISSSS!!! Okay
Answer:
1. follow
2. corellation
3.does
Explanation:
i dont know for sure but I think those are the answers cause the two lines look around the same.
“optical fibers can provide people with natural sunlight for free, but what are some disadvantages to using optical fibers to light a room with sunlight?”
Answer:
the UV exposure is my guess
Atoms will ___ electrons so each atom involved will have a Bible gas configuration.
Answer:
Explanation:
where anwser
Please help me I don’t understand this much ://
Answer:
The answers are all small.
Explanation:
They are all small because a asteroid has a small amount of energy and produces a small amount a small crater. A small crater was likely formed by a small asteroid.
Please help me with this it’s really hard to do :/
Answer:
8 is the answer.
Explanation:
100,000,1000
= 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10
= 10^8
The active ingredient in some insect repellents is N,N-diethyl-m-toluamide. How does this
insect repellent work? Which carboxylic acid and amine would be released by the hydrolysis of
this amide? Is this important?
The hydrolysis of N,N-diethyl-m-toluamide yields 3-methylbenzoic acid which easily biodegradable.
The insecticide repellent N,N-diethyl-m-toluamide is used to repel rather than kill insects. It functions by interfering with the ability of the insects to detect body heat and skin chemicals. In a nutshell, it confuses the receptors in the insect.
The hydrolysis of N,N-diethyl-m-toluamide yields 3-methylbenzoic acid and diethylamine as the products. This is important because the 3-methylbenzoic acid is not an environmental concern since it is readily biodegradable and does not accumulate significantly in living organisms. It has also not been found to be mobile in soil and water. Environmental concerns are always a prime consideration in assessing chemicals for use.
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Question 4 of 10
What is gravitational potential energy?
A. Energy stored in atoms
B. Energy from light
C. Energy of motion
ОО
D. Energy stored in height differences
SUBMIT
Answer:
c
Explanation:
because of the law of gravity
Glycerol (molar mass 92.09 g/mol) has been suggested for use as an alternative fuel. The enthalpy of combustion, Δ
H°comb , of glycerol is −1654 kJ/mol. What mass of glycerol would need to be combusted to heat 500.0 g of water from 20.0°C to 100.0°C ? (The specific heat capacity of water is 4.184 J/(g⋅°C). Assume that all the heat released by the combustion reaction is absorbed by the water.)
The mass of glycerol to that would need to be combusted to heat 500.0g of water from 20.0°C to 100.0°C is; 9.32 grams.
We must establish the fact that energy is neither created nor destroyed.
Therefore, the amount of heat absorbed by water is equal to the amount of heat released by the combustion of glycerol.
Total heat absorbed by water, H(water) is;
Q(water) = m C (T2 - T1)
Q(water) = 500 × 4.184 × (100-20)
Q(water) = 167.36 kJ
Consequently, the quantity of heat evolved by the combustion of glycerol is;
Q(glycerol) = 167,360 J = n × ΔH°comb
where, n = no. of moles of glycerol.
167.36 kJ= n × 1654 kJ/mole
n = 167.36/1654
n = 0.1012 moles of glycerol.
Therefore, mass of glycerol combusted, m is;
m = n × Molar mass
m = 0.1012 × 92.09
m = 9.32 g.
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Suggest an alternative to zinc oxide that could react with hydrochloric acid to give you the desirable product.
Answer:
maybe all the basic oxide i guess
Explanation:
cuo + hcl -> cucl2 + h20
...
The reaction of zinc oxide with hydrochloric acid is as follows:
[tex]ZnO + 2HCl[/tex] → [tex]ZnCl_2+ H_2O[/tex]. What type of reaction is this?The reaction of zinc chloride with hydrochloric acid represents an example of a neutralization reaction. This reaction significantly forms zinc chloride which is a salt and water.
According to the context of this question, the desired product of the given reaction forms the salt. In this reaction, zinc oxide acts as a base while hydrochloric acid is the strongest acid.
When acid reacts with bases, the product formed is called a salt, so zinc chloride is a salt. This is because it is one of the characteristic properties of acid.
Therefore, the desired product of the reaction of zinc oxide with hydrochloric acid is well described above.
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Marcar la alternativa correcta en relación a desplazamiento y la distancia
Answer A
Explanation:
Explain mole concept using any real life example
Answer:
for instance :
water , H²O , and hydrogen peroxide . H²O² , are alike
in that their respective molecules are composed of hydrogen and oxygen atomd . hope its helpful . Good luck :)
During oxidation of ethanol to ethanol, the ethanol formed was found to be contaminated with unconverted ethanol, describe how you would obtain ethanal free from ethanol
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According to the excerpt from Nature News above, how are the processes in the water
cycle related to the strength and severity of hurricanes like Katrina in 2005?
Answer:
Because it is!
Explanation:
Hurricanes was the one of the big natural disaster . Yes, it was true and it is in the book of mythology.
What made hurricanes Katrina so powerful ?It was so destructive primarily because levees around New Orleans, Louisiana failed. Levees are water barriers built to prevent flooding (parts of New Orleans have an elevation that is lower than sea level). When the levees failed, huge areas of the cities flooded.
Water is in constant motion, moving from the ocean to the sky to the earth. Flooding is a natural event which occurs when water overflows a stream, river or drain. Floods are caused by rainfall, melting snow or ice, or by the failure of structures such as dams.
There are main four parts of water cycle . i.e. evaporation , convection , precipitation and - collection.
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Plzzzzz help me...This is not my exam paper the is my worksheet and I am preparing for it so without any sus plsss help me
Lab Report
Plasma Membrane
It’s time to complete your Lab Report. Save the lab to your computer with the correct unit number, lab name, and your name at the end of the file name (e.g., U2_ Lab_PlasmaMembrane_Alice_Jones.doc).
Introduction
What was the purpose of the experiment?
To experiment with and learn about the plasma membrane.
What were the independent, dependent, and control variables in your investigation? Describe the variables used in the part of the experiment with the eggs.
Type your answer here:
Write a hypothesis based on observations and scientific principles.
Type your answer here:
Experimental Methods
What tools did you use to collect your data?
Type your answer here:
Write your procedure. List each step so that another student could follow the procedure and repeat your experiment.
Type your answer h
Answer:
I know some of them...
Explanation:
1. What was the purpose of the experiment?
Type your answer here: The purpose of this experiment is to show that a cell membrane is a type of barrier, and is permeable to some substances, but may not be permeable to all substances.
2. What were the independent, dependent, and control variables in your investigation? Describe the variables used in the part of the experiment with the eggs.
Type your answer here: Independent variable / Manipulated variable: Refers to all the variables in an experiment that provoke a response in another variable. This variable is modified during the experiment to analyze how another variable responds to it. The researcher wants to study how the changes in these variables affect the dependent variable. The researcher can change these variables to see what changes it implies in an object, process, trait, or anything that depends on them.
Dependent variable / Responding variable: Its response depends on any change in the independent variable. The dependent variable is the one that is being investigated, studied, and measured. It represents a quantity of something which value depends on how the independent variable is modified. It is usually identified by the letter Y. A change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable. In the exposed example, the dependent variable is the egg circumference.
Constants / Controlled variables: Refers to those variables in an experiment that are controlled and have no influence on the results. These variables do not affect the change in the dependent variable values. In the exposed example the use of the lid to seal the jar and the amount and concentration of vinegar might be considered as a controlled variable. These elements are used but do not provoke any change in the size of the egg.
thats it... CAN SOMEONE ANSWER THE OTHERS?! I NEED ITT