Answer:
CH3COOH would be more concentrated
Explanation:
The higher the concentration value, the more concentrated it is.
The relationship between concentration, moles and volume is given by the equation;
Concentration = No of moles / Volume
5.0 grams of HCOOH dissolved in 189 mL of water
Number of moles = Mass / Molar mass = 5 / 46.03 = 0.1086 mol
Concentration = 0.1086 / 0.189 = 0.5746 mol/L
1.5 moles of CH3COOH dissolved in twice as much water
Volume = 2 * 189 = 378 ml = 0.378 L
Concentration = 1.5 / 0.378 = 3.9683 mol/L
Comparing both concentration values;
CH3COOH would be more concentrated
How can you model the movement of a primary wave?
Answer:
P-waves (primary or compressional waves) are longitudinal or compression waves, able to move through solids, liquids, and gases at speeds ranging between 300-5,000 metres per second. As they travel through rock, they move particles back and forth in the same direction that the wave is moving
Explanation:
How many moles of a gas would occupy 22.4 Liters at 273 K and 1 atm?
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Answer:
The following relationship makes this possible: 1 mole of any gas at standard temperature and pressure (273 K and 1 atm) occupies a volume of 22.4 L.
Explanation:
1 mole of any gas would occupy 22.4L of gas at standard temperature and pressure (STP) i.e at 273K and 1 atm.
The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C (or 273 K) are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.
An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases:
P V = n R T
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Can someone please fill in the blanks?
Answer:
g3gegsgehshhwwjwuwuwu2euyeeyeyyy
Answer:
helium formula He
Ammonia formula NH3
methane formula CH₄
chlorine formula Cl-
Explanation:
What is the definition of an Arrhenius acid?
Answer:
increases [H+]
Explanation:
How would you describe the size of our sun compared to a red dwarf and a supergiant?
The sun is the same size as a red dwarf.
The sun is the same size as a supergiant.
The sun is smaller than the red dwarf and the supergiant.
O The sun is larger than a red dwarf but smaller than a supergiant.
Answer:
D is the answer
Explanation:
Cytokinesis happens differently for plant and animal cells. Both separate cytoplasm between two new daughter cells. However, which type of cell cytokinesis looks like a balloon being separated by a string being pulled tightly between them?
Question 4 options:
Plant Cell cytokinesis
Animal Cell Cytokinesis
Both
Neither
Answer:
Animal Cell Cytokinesis
Explanation:
Answer: Animal cell
Explanation:) It refers to the process of cell division, which takes place during mitosis, is known as cytokinesis.
The process of cytokinesis is different for animal cell and plant cell.
Where, in case of plant cell, a separation, known as cell plate is formed along the center of the parent cell, which is responsible for the separation of the cells.
Whereas, in case of animal cell, the plasma membrane contracts itself along the center, until the two daughter cells are separated from each other.
Hence, from the given information of the question,
The correct answer is animal cell.
What is an ecosystem. A.It is a single plant and a single animal that live in given area B. it is a community of plants, animals and their physical surrounding. C it is the members of the same species in an area. D it is one species that lives in a given area GIVE BRANLIYST
Answer:
B. it is a community of plants,animals and there physical surrounding.
At what temperature would a 1.30 m NaCl solution freeze, given that the van't Hoff factor for NaCl is 1.9? Kf for water is 1.86 ∘C/m .
Answer:
-4.59°C
Explanation:
Let's see the formula for freezing point depression.
ΔT = Kf . m . i
ΔT = Freezing T° of pure solvent - Freezing T° of solution
Kf = Freezing constant. For water if 1.86°C/m
m = molality (moles of solute in 1kg of solvent)
i = Van't Hoff factor.
0°C - Freezing T° of solution = 1.86°C /m . 1.30m . 1.9
Freezing T° of solution = - (1.86°C /m . 1.30m . 1.9)
Freezing T° of solution = - (1.86°C/m . 1.30m . 1.9) → -4.59°C
NaCl → Na⁺ + Cl⁻
What happens to that atom of magnesium-24 if it GAINS a PROTON
Answer:
Adding or removing protons from the nucleus changes the charge of the nucleus and changes that atom's atomic number. So, adding or removing protons from the nucleus changes what element that atom is! For example, adding a proton to the nucleus of an atom of hydrogen creates an atom of helium
Explanation:
If 100 ml of a 0.5 M HCI Solution is diluted with water to 1000ml, what is the new concetration?
Answer:
[tex]0.05\ \text{M HCl}[/tex]
Explanation:
[tex]V_1[/tex] = Initial volume = 100 mL
[tex]V_2[/tex] = Final volume = 1000 mL
[tex]M_1[/tex] = Initial concentration = 0.5 M
[tex]M_2[/tex] = Final concentration
We have the relation
[tex]\dfrac{M_1}{M_2}=\dfrac{V_2}{V_1}\\\Rightarrow M_2=M_1\dfrac{V_1}{V_2}\\\Rightarrow M_2=0.5\times \dfrac{100}{1000}\\\Rightarrow M_2=0.05\ \text{M HCl}[/tex]
The new concentration is [tex]0.05\ \text{M HCl}[/tex].
What is the mass of 3.4 moles of NaCl?
Answer: 140.4 grams. One mole would be 58.5 grams, or 23 (the atomic mass of sodium) + 35.5 (the atomic mass of chlorine)
Explanation:
Answer:
3.4 * 58.5 = 198. 9 grams
pls pls pls help im begging
Answer:
1. An incline plane is a flat plan put at a positive angle with the ground (assuming the ground is horizontal)
2. Work equals force times distance. And since the hypotenuse of a triangle (the ramp) is longer than the opposite side (equivalent to lifting an object vertically), the increased distance decreases the force needed to do a certain amount of work.
3. We usually use incline planes to elevate large objects. Since it takes less force to move certain things up inclines rather than picking them up, it is much simpler to move an object up an incline.
4. You could decrease the force by making the plane's angle with the ground smaller.
5. I don't know; I wasn't in your class :)
6. Ramps, wheelchair entrances, inclined rooves etc.
7. No. A plane has to be relatively flat; therefore stairs are neither a plane, nor an inclined plane.
How many bases of RNA represent an amino acid?
Answer:
three bases
Genetic experiments showed that an amino acid is in fact encoded by a group of three bases, or codon.
Explanation:
Hope this helps
In the given question, three bases of RNA represent an amino acid.
RNA (ribonucleic acid) is a molecule that plays an important role in protein synthesis. It carries genetic information from DNA to ribosomes, where it is used to direct the assembly of amino acids into proteins.
The genetic code is the set of rules by which the sequence of nucleotides in DNA or RNA is translated into the sequence of amino acids in a protein. The code is based on the sequence of three nucleotides, known as a codon, which specifies a particular amino acid.There are 64 possible codons, but only 20 amino acids that are used to build proteins. This means that some amino acids are specified by more than one codon. For example, the amino acid leucine can be specified by six different codons: UUA, UUG, CUU, CUC, CUA, and CUG.Therefore, three RNA bases represent an amino acid.
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List and Describe the two groups of clastic sedimentary rock.
Answer:
Clastic sedimentary rocks are formed from rock fragments or clasts; chemical sedimentary rocks precipitate from fluids, and biochemical sedimentary rocks form as precipitation from living organisms.
Sedimentary rock is classified into two groups based on how they form. They are clastic and chemical. Clastic sedimentary rock is formed as bits of weathered rock become cemented together. Because all kinds of rock are subject to weathering many different minerals can make up this group of rocks.
12.
An object with a mass of 3 kg has a momentum of 75 kg•m/s. What is the velocity?
Answer:
the velocity is 25 m/s
Explanation:
The computation of the velocity is shown below:
As we know that
Magnitude of Momentum = (mass) × (speed)
75 kg. m/s = 3 kg × speed
So, the speed is
= 75 ÷ 3
= 25 m/s
hence, the velocity is 25 m/s
increase food supplies in an ecosystem decrease competition because the competing organsims would
How many moles of gas would be present in a gas trapped within a 37.0 L vessel at 80.00C at a pressure of 2.50 atm
go here is the answer key
http://msschmidly.weebly.com/uploads/2/6/2/0/26201624/gases_review___calculations.pdf
According to ideal gas equation, there are 271472.7 moles of gas present in a gas trapped within a 37.0 L vessel at 80.0°C at a pressure of 2.50 atm.
What is mole?Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.
It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.
It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons .Molar mass has units of gram per mole . In case of molecules, where molar mass in grams present in one mole of atoms is its atomic mass.
Substitution of values in ideal gas equation gives,n= 2.5×37/8.314×353=271472.7 moles.
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Atomic masses of element
Hydrogen and carbon
Answer:
Atomic mass of Hydrogen is 1.00784 u
Atomic mass of Carbon is 12.0107 u
Explanation:
Can someone help me?
Answer:
b
Explanation:
I don't know that is what the outcome is I think
Assignment Prompt
In this assignment, you will research the relationship between different types of energy when energy is
being transformed. You will present your findings in the form of bar graphs or pie charts that show the
forms of energy at different times in the process. You will then create a poster to display your findings.
Your poster should include a title, a brief description of the energy transformation you are showing, your
graphs, and works cited.
Assignment Instructions
Step 1: Gather materials and necessary information.
a) You will choose an energy transformation to show. Some of the ones you have learned about
include those that occur in a burning bonfire and a wind turbine.
• Do research to find out about an energy transformation that affects your daily life.
• Find out what the starting types of energy are and what the ending types of energy are.
• Decide how many steps in the process your poster will show.
• Create bar graphs or pie charts to show the relationship between the different types of
energy at different steps in the transformation process.
b) Be sure to keep a list of your references so you can cite them later.
Step 2: Decide on a title.
a) Begin by deciding on a title for your poster and writing it neatly at the top.
b) The title should identify the energy transformation you are showing.
Step 3: Create your graphs.
a) Decide how many graphs you will need to show the energy transformation.
b) You should have at least 3 graphs so that the steps of the transformation will be clear.
c) Each graph should be clearly labeled.
d) Careful use of color on your graphs will make them easy to read and understand.
Step 4: Decide on the descriptive words to include on your poster.
a) People looking at your poster may need more information than just the title and the
graphs. Decide on how you want to present the information your viewers need.
b) Keep the information as short as possible while still including what you need. Remember that
when people look at a poster, they focus on the graphics.
Step 5: Decide on the best layout for your poster.
a) You want to incorporate your text and visuals in a way that is attractive and attention-getting.
b) Keep your graphics as large as possible.
Step 6: Put your poster together.
Step 7: Cite your sources.
a) In the lower right-hand corner of your poster, create a section titled Works Cited.
b) List the resources you used to create your poster. A simple list of website titles and
addresses (URLs) is acceptable. If you used print sources, list the title, author, publisher, city,
and date. The print for this section can be small; it needs to be readable close-up.
Step 8: Identify yourself as the creator of the poster.
a) Place your name in the lower right-hand corner of the poster.
b) On the back, write your teacher’s name and the due date for the poster.
Step 9: Evaluate your poster using this checklist.
If you can check each criterion below, you are ready to submit your presentation.
Yes No Evaluation Question
Does your poster have a title that grabs interest and tells what your subject is?
Are the graphs clearly labeled?
Are the graphs bright and colorful?
Is the text on the poster clearly written so that the viewer understands what you are trying
to show?
Is it free from misspellings?
Is your poster laid out in a way that invites people to look at it?
Have you included your name and works cited?
Is your entire poster neat and attractive?
Step 10: Revise and submit your poster.
a) If you were unable to check off all the requirements on the checklist, revise your poster
before submitting it.
b) Ask your teacher for further instructions about presenting your poster to an audience of your
peers.
Resource Suggestions
• Bar Graph
• Pie Chart
please help! you need to make a poster with any kind of paper and no drawing and if you do any drawing on the poster make it the skill of a 6th grader 100 points plus brainly if you get it right
Answer:
give other guy brainliest
Answer:El mercantilismo en Gran Bretaña consistió en la posición económica de que, para aumentar la riqueza, sus colonias serían proveedoras de materias primas y exportadoras de productos terminados. El mercantilismo provocó muchos actos de lesa humanidad, incluida la esclavitud y un sistema de comercio desequilibrado.
Explanation:
PLSSS HELP MEEE!! I don’t get this anyone help me!!
Answer:
B
Explanation:
The other answers dont make any sense.
If the Temperature exerted on a sample of gas is increased from 273K to 410K, and the initial pressure is 1.3317 atm what is the final pressure in atm?
Answer: 2.00 atm
Explanation:
P1/T1 = P2/T2
1.3317/273 = P2/410
P2 = 2.00 atm
SOMEONE HELP WITH THAT THING PLSSS( I also didn’t know what to put as the topic)
Answer:
hope this helps
Explanation:
Water was on earth with the dinosaurs and almost at the very start.
Water starts anywhere from clouds to ponds
I choose ponds, water evaporates from the sun and moves its way through the air being collected into clouds in the atmosphere, clouds are evaporated water molecules, then the water combines to form rain wich then end up on a hill and travel back to a water source or goes into the ground and makes groundwater and if there is enough rain overtime will form a pond.
What is the name of the test used to find out the gas produced when calcium reacts with sulfuric acid? *
1.Lime Water
2.lighted splint
3.litmus paper
4.glowing splint
Answer:
1
Explanation:
calcium react with sulphuric acid to produce carbon dioxide which turns lime water milky
What do weather scientists
do?
What are they called?
questions.
1) The degree of polarity of a bond is indicated by
A. Ionization energy difference
B. The shape of the molecule
C. Electronegativity difference
D. The partial charges of the molecule
2) When electrons are shared unequally, chemists characterize
Answer:
d
Explanation:
the partial charges of the molecule
Write the correct formula for each compound named below. Show the from which it is formed.
Answer:
Explanation:
Sodium Chloride = Na⁺ + Cl⁻ = NaCl
Lithium bromide = Li⁺ + Br⁻ = LiBr
Magnesium fluoride = Mg ⁺² + F⁻ = Mg₂F.
Potassium Oxide = K⁺ + O⁻² = K₂O
Calcium sulphide = Ca⁺² + S⁻² = CaS
Aluminum Iodide = Al⁺³ + I⁻ = Al I₃
Barium bromide = Ba⁺² + Br⁻ = BaBr₂
Aluminum sulphide = Al⁺³ + S⁻ = Al₂S₃
Calcium Phosphide = Ca⁺² + P⁻³ = Ca₃P₂
Lithium Nitride = Li⁺ + N⁻³ = Li₃N
Magnesium Oxide = Mg⁺² + O⁻² = MgO
Aluminum Fluoride = Al⁺³ + F⁻ = AlF₃
Lithium Oxide = Li⁺ + O⁻² = Li₂O
Beryllium iodide = Be⁺² + I⁻ = BeI₂
How many liters of nitrogen would be needed to react with 93.0 liters of hydrogen using the balance
equation below:
N2 + 3H2 → 2NH3
Answer:
7NH
Explanation:
Multiplication & Division
Language of Chemistry
llus
Perform the following
mathematical operation, and
report the answer to the correct
number of significant figures.
0.008 : 51.3
[? ? ] x 100)
Enter
Answer:
0.008 ÷ 51.3 = 0.00015594541910331380.00015594541910331382Round 0.0001559454191033138 → 0.0002 (Sig Figs: 1)
what is the difference b/w combustion and synthesis reaction ?explain with example
Answer:
A synthesis reaction occurs when two or more reactants combine to form a single product in a double replacement reaction two compounds exchange elements. Combustion reaction occurs when a substance reacts quickly with oxygen combustion is commonly called burning. Example'- for synthesis reaction is iron+ oxygen —≥ water . Example:- for combustion reaction is often gaseous products.
may be this was ur answer I hope it might help u