Answer:
5.98 x 10^14 HZ
Explanation:
just did it
Like DNA, RNA contains four nitrogenous bases.
Three of them are the same as those found in
DNA. The one that is different is called
The five-carbon sugar in RNA is called
Answer:
Uracil, Ribose
Explanation:
The Nitrogenous base found in RNA that is not found in DNA is called Uracil.
While the five-carbon sugar in RNA is called Ribose.
Answer:
Uracil and then Ribose
Explanation:
10) A hydrobromic acid (HBr) solution has a molar concentration of 0.0085 M. Calculate the
[H3O+], [OH-] and pH of the solution.
Answer:
Explanation:
To find the [H3O+] of the solution, we can use the fact that HBr is a strong acid and completely dissociates in water. Therefore, the concentration of H3O+ is equal to the molar concentration of HBr:
[H3O+] = 0.0085 M
To find the [OH-], we can use the equation:
Kw = [H3O+][OH-]
Where Kw is the ion product constant for water, which has a value of 1.0 x 10^-14 at 25°C.
Rearranging the equation to solve for [OH-], we get:
[OH-] = Kw / [H3O+]
[OH-] = (1.0 x 10^-14) / (0.0085)
[OH-] = 1.176 x 10^-12 M
To find the pH of the solution, we can use the equation:
pH = -log[H3O+]
pH = -log(0.0085)
pH = 2.07
Therefore, the [H3O+] of the solution is 0.0085 M, the [OH-] is 1.176 x 10^-12 M, and the pH is 2.07.
hello:) I’m a little confused because the textbook says it forms water but the notes from my school says that it forms salt and water :/
Answer:
Yes, it form Salt and Water
i’m BEGGING you PLEASE help me :(((
Answer:
C.
Explanation:
Since we are trying to find the amount of moles of oxygen, we use the balanced equation to help us out. Since there are 4 moles of Sb for every 3 moles of oxygen, we must use a conversion to let us get rid of the Sb unit and get our desired unit of moles of oxygen. Therefore, C is our best answer.
What is the shape of a molecule of CH4?
O A. Trigonal-bipyramidal
O B. Bent
O C. Trigonal-pyramidal
O D. Tetrahedral
Answer:
D. Tetrahedral
Explanation:
the reason is because four electron pairs are distributed.
How many moles of 0.225 M CaOH2 are present in 0.350 L of solution?
Calculate the number of moles of solute (CaOH2)
( M CaOH2)
(0.350 L
) = mol CaOH2
Answer : The number of moles of solute [tex]Ca(OH)_2[/tex] is, 0.0788 moles.
Explanation : Given,
Molarity = 0.225 M
Volume of solution = 0.350 L
Formula used:
[tex]\text{Molarity}=\frac{\text{Moles of }Ca(OH)_2}{\text{Volume of solution (in L)}}[/tex]
Now put all the given values in this formula, we get:
[tex]0.225M=\frac{\text{Moles of }Ca(OH)_2}{0.350L}[/tex]
[tex]\text{Moles of }Ca(OH)_2=0.0788mol[/tex]
Therefore, the number of moles of solute [tex]Ca(OH)_2[/tex] is, 0.0788 moles.
Answer:
(0.225 M CaOH2) x (0.350 L) = 0.0788 mol CaOH2
Explanation:
edge 2021
For the second question: How many grams of CaOH2 are in this solution?
The molar mass of CaOH2 is 58.093 g/mol.
Answer:
(0.0787 mol CaOH2) x (58.093 g/mol) = 4.57g CaOH2
Explanation:
edge 2021
a reaction between athene and oxygen is used to produce epoxyethane. when silver is combined with ethene, the reaction for producing
Answer:
We'll begin by writing the balanced equation for the reaction. This is given below:
C2H4 + 3O2 —> 2CO2 + 2H2O
Next, we shall determine the masses of C2H4 and O2 that reacted and the mass of H2O produced from the balanced equation. This is illustrated below:
Molar mass of C2H4 = (12x2) + (4x1) = 28g/mol
Mass of C2H4 from the balanced equation = 1 x 28 = 28g
Molar mass of O2 = 16x2 = 32g/mol
Mass of O2 from the balanced equation = 3 x 32 = 96g
Molar mass of H2O = (2x1) + 16 = 18g/mol
Mass of H2O from the balanced equation = 2 x 18 = 36g
Summary:
From the balanced equation above,
28g of C2H4 reacted with 96g of O2 to produce 36g of H2O.
A. Determination of the limiting reactant. This can be achieved as shown below:
From the balanced equation above,
28g of C2H4 reacted with 96g of O2.
Therefore, 75.8g of C2H4 will react with = (75.8 x 96)/28 = 259.89g of O2.
From the illustration above, we can see that a higher mass i.e 259.89g of O2 than what was given i.e 201g is needed to react completely with 75.8g of C2H4.
Therefore, O2 is the limiting reactant and C2H4 is the excess reactant.
B. Determination of the mass of water, H2O produced from the reaction. This is illustrated below:
In this case the limiting reactant is used because it will give the maximum yield of water as all of it is used up in the reaction. The limiting reactant is O2.
From the balanced equation above,
96g of O2 reacted to produce 36g of H2O.
Therefore, 201g of O2 will react to produce = (201 x 36)/96 = 75.38g of H2O.
Therefore, 75.38g of H2O were produced from the reaction.
A 13.00 g sample of citric acid reacts with an excess of baking soda as shown in the equation.
H3C6H507+3NaHCO3->3CO2+3H20+Na3C6H507
What is the theoretical yield of carbon dioxide? 0.993 g 2.98 g 3.65 g 8.93 g
Answer:2.98
Explanation:
Answer:
D) 8.93 g
Explanation:
How do you write hexasulfur mononitride in covalent formula? What’s Chlorine monoiodide formula?
Answer:
1) S2N
2)ClI
Explanation:
A chemical formula shows the relative ratio of atoms present in a compound. When we write a chemical formula, we have an idea of the ratio in which atoms combine in the compound of interest. This is a great clue when we are attempting to elucidate the structure of the compound.
For hexasulphur mononitride,the formula of the compound must be S6N3, this reduced to lowest terms to give S2N.
Similarly, the formula for chlorine monoiodide is ClI as shown in the answer above.
What is the mass of 0.125 mol of CO2
Answer:
5.50g (corrected to 3 significant figures)
Explanation:
mass = no. of moles x molar mass
molar mass of CO2 = (12.0107 + 15.999x2) =44.0087
Therefore, mass = 0.125 x 44.0087
= 5.50g (corrected to 3 significant figures)
We learned about three career opportunities in the field of pulp and paper in class. Pick one career and find out the education, training, and experience required for this profession. Write about what you found and explain why this profession might interest you
Answer:
Pulp and Paper technology is a specialist field of chemical engineering which involves the study of the processes required for the conversion of raw materials such as wood, into pulp and paper products.
Paper and pulp manufacturing is a growing and dynamic industry so it requires a wide variety of personnel - from unskilled and semi-skilled workers to tradesmen, technicians and engineers - to control all the processes and develop new ones.
I choose to be a chemist in the field of paper and pulp. Requirements and compulsory Subjects: Physical Sciences, Mathematics, Engiineering and Technology.
Chemists are responsible for quality control and they study the influence of various chemicals on pulp and paper. Chemical and mechanical engineers develop new production methods.
I'll like to be a chemist in the field of paper and pulp because they perform the major role in the chemical properties of the paper and pulp.
Explanation:
Hope it helps.
Answer:
PLATO ANSWER
Explanation:
How many grams of NO are produced from 15.8 g of H2O
Answer:
26.33 g of NO.
Explanation:
We'll begin by writing the balanced equation to produce NO from H2O. This is given below:
5N2 + 6H2O —> 4NH3 + 6NO
Next, we shall determine the mass of H2O that reacted and the mass of NO produced from the balanced equation. This is illustrated below:
Molar mass of H2O = (2x1) + 16 = 18 g/mol
Mass of H2O from the balanced equation = 6 x 18 = 108 g
Molar mass of NO = 14 + 16 = 30 g/mol
Mass of NO from the balanced equation = 6 x 30 = 180 g
From the balanced equation above,
108 g of H2O reacted to produce 180 g of NO.
Finally, we shall determine the mass of NO produced by the reaction of 15.8 g of H2O.
This is illustrated below:
From the balanced equation above,
108 g of H2O reacted to produce 180 g of NO.
Therefore, 15.8 g of H2O will react to produce = (15.8 x 180)/108 = 26.33 g of NO.
Therefore, 26.33 g of NO were obtained from the reaction.
Which element's total number of electrons is equal to the number of core
electrons in iron (Fe)?
The Periodic Table
O A. Potassium (K)
B. Argon (Ar)
C. Krypton (Kr)
D. Sodium (Na)
Answer:
i belive its b
Explanation:
what’s the mass of 2.80 mol of ca
Answer:
112.22 g
Explanation:
mass = no. of moles x atomic mass
From the periodic table, we can see the atomic mass of Ca is 40.078.
Therefore,
mass = 2.80 x 40.078
= 112.22g (corrected to 2 decimal places.)
In what way does the shape of a molecule affect how the molecule is involved with living systems?
A. It determines the weight of a molecule
B. it determines what elements are in a molecule
C. it determines oxidation states present in a molecule
D. it determines how the molecule functions
There are two characteristics of molecules, one is geometry and other is shape. Shape is excluding lone pair surrounding the central element and geometry is including the lone pair. Therefore, the correct option is option D.
What is VSEPR theory?VSEPR stands for valence shell electron pair repulsions. VSEPR theory is used to predict the shape and geometry of molecules on the basis of valence electrons pairs that are present around the central element of the molecule.
According to VSEPR theory, Lone pair lone pair repulsion is greater than bond pair bond pair repulsion. There are so many limitations of VSEPR theory. There is a repulsion between bond pair electrons and lone pairs present on the central element. The shape of a molecule affect how the molecule is involved with living systems as it determines how the molecule functions.
Therefore, the correct option is option D.
To know more about VSEPR theory, here:
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Isomers, such as acetic acid and methyl formate, have
A. different empirical formulas.
B. the same chemical formula, arrangement of bonds, and orientation of atoms.
C. the same chemical formula but different arrangements of bonds or atoms.
D. different chemical formulas.
the answer is C given by the definition of isomer compounds
molar mass of c16h19n305s
Answer:
365.212
Explanation:
According to the given situation, the calculation of molar mass is shown below:-
Data provided
[tex]c_{16}\ h_{19}\ n_3\ o_5\ S[/tex]
Molar mass = 16 × 12 + 19 × 1.008 + 3 × 14 + 5 × 16 + 32.06
= 192 + 19.152 + 42 + 80 + 32.06
Molar mass = 365.212
Therefore for determining the molar mass we simply solve the above equation.
So, the correct answer is 365.212
The overall process of photosynthesis has the balanced chemical equation 6CO, +6H,0 CH.0, 60, What does this tell you about the relative amounts of carbon
dioxide and water consumed in this process?
A. For every six moles of carbon dioxide consumed, one mole of water is consumed
B. For every mole of carbon dioxide consumed, one mole of water is consumed
C. For every gram of carbon dioxide consumed, one gram of water is consumed
D. For every six grams of carbon dioxide consumed, one gram of water is consumed.
Answer:
(C)
Explanation:
Because of the physics of it.
According to the overall equation of photosynthesis as follows: 6CO2 + 6H2O = C6H12O6 + 6O2, for every mole of carbon dioxide consumed, one mole of water is consumed.
What is photosynthesis?Photosynthesis is the process by which plants and other photoautotrophs convert light energy into chemical energy.
Photosynthesis makes use of carbon dioxide and water to produce glucose and oxygen as follows:
6CO2 + 6H2O = C6H12O6 + 6O2
This chemical equation suggests that for every mole of carbon dioxide consumed, one mole of water is consumed.
Learn more about photosynthesis at: https://brainly.com/question/1388366
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One mole of any gas at room
temperature and pressure will
occupy liter(s).
A. 10
B. 1
C. 22.4
D. 24
Reset Selection
One mole of any gas at room temperature and pressure will occupy 22.4 liter(s) (option C).
What is an ideal gas?Ideal gas is an hypothetical gas, whose molecules exhibit no interaction, and undergo elastic collision with each other and with the walls of the container.
One mole of an ideal gas contains a volume of 22.414 L at standard temperature and pressure (STP).
According to Avogadro's law, the volume occupied by one mole of a gas must be the same for all gases if the temperature and pressure are the same.
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You would expect magnesium to be most similar in properties to
A. silicon.
B. calcium.
C. potassium.
D. sulfur.
Answer:
Calcium
Explanation:
"Calcium is a mineral that is necessary for life. In addition to building bones and keeping them healthy, calcium enables our blood to clot, our muscles to contract, and our heart to beat. About 99% of the calcium in our bodies is in our bones and teeth. "
Answer:
Calicum
Explanation:
DID THE TEST AND GOT IT RIGHT!!!
A sample of Ne gas has a pressure of 654 mmHg with an unknown volume. The gas has a pressure of 345 mmHg when the volume is 495mL with no change in temperature or amount of gas. What is the initial volume in milliliters of the gas?
Answer:
The initial volume of Ne gas is 261mL
Explanation:
This question can be answered using Ideal Gas Equation;
However, the following are the given parameters
Initial Pressure = 654mmHg
Finial Pressure = 345mmHg
Final Volume = 495mL
Required
Initial Volume?
The question says that Temperature is constant;
This implies that, we'll make use of Boyle's law ideal gas equation which states;
[tex]P_1V_1 = P_2V_2[/tex]
Where [tex]P_1[/tex] represent the initial pressure
[tex]P_2[/tex] represent the final pressure
[tex]T_1[/tex] represent the initial temperature
[tex]T_2[/tex] represent the final temperature
[tex]P_1 = 654mmHg\\P_2 = 345mmHg\\V_2 = 495mL[/tex]
Substitute these values in the formula above;
[tex]654 * V_1 = 345 * 495[/tex]
[tex]654V_1 = 170775[/tex]
Divide both sides by 654
[tex]\frac{654V_1}{654} = \frac{170775}{654}[/tex]
[tex]V_1 = \frac{170775}{654}[/tex]
[tex]V_1 = 261.123853211[/tex]
[tex]V_1 = 261mL[/tex] (Approximated)
The initial volume of Ne gas is 261mL
Which is evidence that the reaction below is a redox reaction? 2Na + Cl2 → 2NaCl
Answer:
The correct answer is Two different elements take part in the reaction.
Explanation:
A redox reaction is generally defined as chemical reaction in which oxidation and reduction takes place simultaneously.It is a reaction between two species among which gain and loss of electrons takes place.
What is the name given to the electrons in the highest occupied energy level of an atom? -anions -cations -valence electrons -orbital electrons
Answer:
Valence electrons
Explanation:
Solid zinc is added to aqueous cobalt chloride. Using the metal activity series, which chemical equation reflects this reaction and its outcome?
A. 2Zn (s) + 3CoCI2 (aq) —> 2ZnCl2 (aq) + 3Co (s)
B. 2ZnCl2 (aq) + 3Co (s) —> 3CoCI2 (aq) + 2Zn (s)
C. Zn (s) + CoCI2 (aq) —> ZnCl2 (aq) + Co (s)
D. Zn (s) + CoCI2 (aq) —> NR
Answer:
Option C. Zn(s) + CoCI2(aq) —> ZnCl2 (aq) + Co(s)
Explanation:
The activity series of metals gives a clearer understanding of how metals displaces other metals in solution. Metals higher in the activity series will always displace those lower in the activity series.
Zinc, Zn is higher in the activity series than cobalt, Co. Therefore, zinc, Zn will displace cobalt, Co in any solution.
Considering the options given above, only option C. reflect the reaction and it is also balanced.
Zn(s) + CoCI2(aq) —> ZnCl2(aq) + Co(s)
Suggest why the colour of the copper sulfate solution fades during electrolysis.
Please help! Thank you:)
Answer:
The traces of hydrogen ions are not discharged, so you not see any gas bubbles collecting on the negative cathode electrode. The blue colour fades as more and more copper is deposited, depleting the concentration of the blue copper ion Cu2+ ions in solution.
Explanation:
What causes two different types of molecules to react with each other?
Answer:
Molecular Interactions are attractive or repulsive forces between molecules and between non-bonded atoms. Bonds break and form during chemical reactions. In the chemical reaction called fire, bonds of cellulose break while bonds of carbon dioxide and water form.
Explain the difference between the way a molecule (which does not ionize) dissolves and an ionic compound dissolves, using sugar water and salt water as an example
Answer:
The molecules (which do not ionize) dissolves in water depends on the polarity of molecules while the ionic compounds that dissolve in water depend on the electric charge of the compound.
For example sugar dissolves in water because of the polar nature of sugar which releases energy and form intermolecular bonds with the polar water molecules.
While salt dissolves in water as salt has a net electric charge that attracted by the oppositely charged ions present in the water. The attractive force between salt and water is stronger than sodium and chloride and allow salt to dissolve in the water.
He (Helium) is _________ atomic molecule.
Answer:
Monatomic molecule
Explanation:
Each helium atom has 2 electrons, which is already the maximum no. of electrons that can fit in the first electron shell. When the outermost electron shell is full (2 for the first layer, 8 for others), the atom is stable.
Helium atom itself is already stable, so it doesn't need to combine with another helium atom to form a molecule, hence we call it monatomic.
What would form a solution
how does scientific theory compare to scientific law