Answer:
9.26 LExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question we have
[tex]density = \frac{12.5}{1.35} \\ = 9.259259...[/tex]
We have the final answer as
9.26 LHope this helps you
What is the total number of moles of oxygen atoms present in one mole of Mg(CIO3)2?
1. 5
2. 2
3. 3
4. 6
Answer:
Of oxygen would be 6 moles (4).
Explanation:
Since it is in a bracket you have to multiply 3 and tge 2 to get 6 oxygens.
i need the answer for this
Answer:
need points
Explanation:
How many elements are in NaC2H302?
Which is a method that can be used to separate the components of a solution?
magnetic separation
decantation
filtration
distillation
Answer:
distillation
Explanation:
i did the assignment
Answer:
distillation
Explanation:
Question 14 Multiple Choice Worth 2 points) If we have less power, we most likely have A. the same amount of work being done over a shorter period of time B. more work done over a shorter period of time C. more work done over the same amount of time D. the same amount of work being done over a longer period of time
Answer:
its c
Explanation:
Answer:
A. the same amount of work being done over a shorter period of time
Explanation:
I believe. Sorry if it is incorrect.
Most of the elements in the periodic table can be described as:
A. metalloids
B. halogens
c. non-metals
D. metals
The answer would be metals :)
How many equivalents are in 0.70 mole of Fe 3+?
The number of the ions or the electrons transferable is called the number of equivalents. The number of equivalents of 0.70-mole iron (Fe³⁺) is 2.1 eq.
What is the number of equivalents?The number of equivalents is the property of the atom, molecule, or compound to transfer its ions or electrons in a chemical reaction. The equivalents can be said to be the moles of the ions with a valency of one to neutralize the oppositely charged species.
The number of equivalents is calculated as,
Number of equivalents = number of moles × valence
Given,
Valency of iron (Fe³⁺) = +3
Number of moles of iron = 0.70 moles
Substituting values above to calculate equivalents as
Number of equivalents = 0.7 × 3
Number of equivalents = 2.1 eq
Therefore, there are 2.1 equivalents in 0.70 moles of iron.
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37. Joshua wants to create something to put between a hot pot and a table, so he doesn't burn the table. He
knows he needs to choose a material that does not conduct heat well. Which material would be the best for
him to choose?
A Wood
B. Aluminum
C. Copper
D. Glass
Answer:
A.wood
Explanation:
It is a poor conductor of heat
Describe a chemical property of iron that you observed.
Answer:
Iron can rust in damp conditions. Or, it can dissolve readily in dilute acids.
Explanation:
What is the mass % of acetone in a 1.77 M solution of acetone (MM = 58.08 g/mol) in water? The density of the solution is 0.971 g/mL.
Answer:
[tex]\%m/m=10.6\%[/tex]
Explanation:
Hello!
In this case, since the by-mass percent is defined by:
[tex]\%m/m=\frac{m_{solute}}{m_{solution}} *100\%[/tex]
Thus, since the given 1.77 M solution is given in terms of mol/L, we need to compute the mass of acetone via its molar mass and the volume of solution in L to g via the density:
[tex]\%m/m=1.77\frac{mol}{L}*\frac{58.08g}{1mol}*\frac{1L}{1000mL}*\frac{1mL}{0.971g} *100\%\\\\\%m/m=10.6\%[/tex]
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What is the molecular structure of H2O?
Answer:
A water molecule consists of two hydrogen atoms and one oxygen atom. The three atoms make an angle; the H-O-H angle is approximately 104.5 degrees. The center of each hydrogen atom is approximately 0.0957 nm from the center of the oxygen atom.
Explanation:
which description of salt is a chemical property?
1. white cube crystals
2.odorless
3.product of mixing acids and bases
4. solid does not conduct electricity
Pls answer quickly
You have 3.00 L of a 3.12 M solution of NaCl(aq) called solution A. You also have 2.00 L of a 2.00 M solution of AgNO3(aq) called solution B. You mix these solutions together, making solution C.
Calculate the concentration (in M) of Ag+ ions in solution C.
Answer:
[tex]M=0.8M[/tex]
Explanation:
Hello!
In this case, since the presence of silver ions is in AgNO3 only, we can compute their moles by using the volume and concentration of the corresponding salt:
[tex]n_{Ag^+}=2.00L*2.00\frac{mol}{L}=4molAg^+[/tex]
Next, since the total volume of solution C is 5.00 L, the required concentration of silver ions turn out:
[tex]M=\frac{4.00mol}{5L} =0.8M[/tex]
Best regards!
.What does the changing the Aperture do when taking a photo? *
4.What effect can you get from using a slow shutter speed? *
5.What effect can you create by using a quick shutter speed?
Answer:
Slower shutter speeds like 1/60 second and slower cause a blurring effect. If you want to take a picture using a slow shutter speed, it is best to mount the camera on a tripod and use image stabilization (such as SteadyShot® technology) to reduce the chance of any unwanted camera movement.
The first big effect of it is motion blur. If your shutter speed is long, moving subjects in your photo will appear blurred along the direction of motion. ... If you use an especially fast shutter speed, you can eliminate motion even from fast-moving objects, like birds in flight, or cars driving past.
Explanation:
Which two molecules are broken down in your cells during cellular respiration? Whoever is correct gets thanks and brainliest
Answer:
glucose and oxygen
Explanation:
Cellular respiration is the aerobic process by which living cells break down glucose molecules, release energy, and form molecules of ATP. Overall, this three-stage process involves glucose and oxygen reacting to form carbon dioxide and water.
what's element on the periodic table has the symbol w
Answer:
W is tungsten on the periodic table
100
80
100 mL
water vapor
Which statement describes what will happen if a student
pushes the plunger
to compress the water vapor?
A. The total number of water particles will increase.
B. The amount of energy in the water particles will decrease.
C. The amount of empty space between the water particles will
decrease.
O D. The total volume of the water particles will increase.
I will mark brainliest
Answer: c (the amount of empty space between the water particles will decrease)
Explanation: i got it right:)
11.
A sample of TNT, C-H5N306, has 7.30 1021 nitrogen atoms. Determine the numbers of
hydrogen atoms in this sample of TNT.
021
Answer:
1.22 × 10^22 H atoms
Explanation:
From this question, TNT has the chemical formula: C-H5N306. The number of nitrogen atoms in the TNT substance is said to be 7.30 × 10^21 atoms.
The number of hydrogen atoms in the same TNT substance can be got using mole ratio. Based on the chemical formula, the mole ratio of hydrogen to nitrogen is 5:3 i.e. H5N3.
This means that;
Number of atoms of hydrogen = 5/3 of the number of atoms of nitrogen.
Hence, number of H atoms = 5/3 × 7.30 × 10^21
number of H atoms = (7.30 × 5/3) × 10^21
number of H atoms = (36.5/3) × 10^21
number of H atoms = 12.1666 × 10^21
number of H atoms = 1.2166 × 10^22 atoms.
Approximately, number of H atoms in TNT is 1.22 × 10^22 atoms.
Write the balanced chemical equation between H2SO4 and KOH in aqueous solution. This is called a neutralization reaction and will produce whater and potassium sulfate. Phases are optional.
0.650 L of 0.430 M H2SO4 is mixed with 0.600 L of 0.240 M KOH. What concentration of sulfuric acid remains after neutralization?
Answer:
0.166M
Explanation:
In a neutralization, the acid, H₂SO₄, reacts with a base, KOH, to produce a salt, K₂SO₄ and water. The reaction is:
H₂SO₄ + 2KOH → K₂SO₄ + 2H₂O
To solve this problem, we need to determine moles of H2SO4 and moles of KOH that reacts to find the moles of sulfuric acid that remains after the reaction:
Moles H2SO4:
0.650L * (0.430mol /L) = 0.2795moles H2SO4
Moles KOH:
0.600L * (0.240mol / L) = 0.144 moles KOH
Moles of sulfuric acid that reacts with 0.144 moles of KOH are:
0.144 moles KOH * (1mol H2SO4 / 2 mol KOH) = 0.072 moles of H2SO4 react.
And remain:
0.2795moles H2SO4 - 0.072moles H2SO4 = 0.2075 moles of H2SO4 reamains.
In 0.650L + 0.600L = 1.25L:
Molar concentration of sulfuric acid:
0.2075 moles of H2SO4 / 1.25L =
0.166MWhich equation best represents the balanced net ionic equation for the reaction that occurs when aqueous solutions of lithium phosphate and magnesium nitrate are mixed?
Answer:
2 PO₄³⁻(aq) + 3 Mg²⁺(aq) ⇒ Mg₃(PO₄)₂(s)
Explanation:
Let's consider the molecular equation that occurs when aqueous solutions of lithium phosphate and magnesium nitrate are mixed.
2 Li₃PO₄(aq) + 3 Mg(NO₃)₂(aq) ⇒ 6 LiNO₃(aq) + Mg₃(PO₄)₂(s)
The complete ionic equation includes all the ions and insoluble species.
6 Li⁺(aq) + 2 PO₄³⁻(aq) + 3 Mg²⁺(aq) + 6 NO₃⁻(aq) ⇒ 6 Li⁺(aq) + 6 NO₃⁻(aq) + Mg₃(PO₄)₂(s)
The net ionic equation includes only the ions that participate in the reaction and insoluble species.
2 PO₄³⁻(aq) + 3 Mg²⁺(aq) ⇒ Mg₃(PO₄)₂(s)
What is electrons configuration for arsenic ?
Answer:
[Ar] 3d¹⁰ 4s² 4p³
Explanation:
so...... ur welcome
what coefficients used to balance chemical equation below? ___ Ag2O ----> ____ Ag + ___ O2
A 2,4,1
B 2,2,2
C 2,1,2
D 1,1,1
The coefficients used to balance the chemical equation given in the question are 2, 4, 1 (Option A)
What is a chemical equation?Chemical equations are representations of chemical reactions using symbols and formula of the reactants and products.
The reactants are located on the left side while the products are located on the right side.
Reactants —> Products
The balancing of chemical equations follows the law of conservation of matter which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another.
How to balance the equationAg₂O —> Ag + O₂
There are 2 atoms of O on the right side 1 on the left. It can be balance by writing 2 before Ag₂O as shown below
2Ag₂O —> Ag + O₂
There are 4 atoms of Ag on the left side and 1 atom on the right side. It can be balance by writing 4 before Ag as shown below
2Ag₂O —> 4Ag + O₂
Now, the equation is balanced.
Thus, the coefficients are: 2, 4, 1
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Aqueous solutions of lithium hydroxide (LiOH) and acetic acid (HC2H3O2) will react to yield lithium acetate and water. In the balanced equation for this reaction, what is the lowest possible whole number coefficient for water?
Answer: The lowest possible whole number coefficient for water is 1.
Explanation:
A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble water and remain in solid form are represented by (s) after their chemical formulas.
The balanced chemical reation for aqueous solutions of lithium hydroxide and acetic acid react to yield lithium acetate and water is:
[tex] LiOH(aq)+CH_3COOH(aq)\rightarrow CH_3COOLi(aq)+H_2O(l)[/tex]
Thus the lowest possible whole number coefficient for water is 1.
In the balanced equation for given reaction, the lowest possible whole number coefficient for water is one.
What is the stoichiometry?Stoichiometry of any reaction will tells about the relative amount of species presents before and after the chemical reaction.
Reaction between the lithium hydroxide and acetic acid is a neutralization reaction, as here lithium hydroxide is a base and acetic acid is a acid as a result of which it produces water molecule and lithium salt of acetate. And balanced equation for this will be represented as:
LiOH(aq) + CH₃COOH(aq) CH₃COOLi(aq) + H₂O(l)
In the above equation all entities are present in equal amounts on both the sides and from the stoichiometry of the reaction it is clear that coefficient of water is 1.
Hence, 1 is the whole number coefficient for water.
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Two waves were analyzed with some high-tech instrumentation. The first wave was found to have a wavelength of 3 x 10 m and the second wave had a wavelength of 3 x 10 m. Which wave would have a higher frequency? Explain
Explanation:
The first wave was found to have a wavelength of 3 x 10⁵ m and the second wave had a wavelength of 3 x 10⁴ m
We need to find which wave have a higher frequency.
The relation between frequency and wavelength is given by :
[tex]c=f\lambda[/tex]
Let f₁ and f₂ be the frequency of wave 1 and wave 2.
[tex]f_1=\dfrac{c}{\lambda_1}\\\\f_1=\dfrac{3\times 10^8}{3\times 10^5}\\\\=1000\ Hz[/tex]
And
[tex]f_2=\dfrac{c}{\lambda_2}\\\\f_2=\dfrac{3\times 10^8}{3\times 10^4}\\\\=10000\ Hz[/tex]
Hence, the wave having less wavelength will have higher frequency. The wave having wavelength 3 x 10⁴ m will have higher frequency.
Determine the number of hydrogen atoms in an alkyne with one carbon–carbon triple bond and 4 carbon atoms.
number of hydrogen atoms: ?
Answer:
There are 6 hydrogen atoms.
Explanation:
The formula for an alkyne that has only one triple bond is as follows:
CₙH₂₍ₙ₎₋₂Where n is any natural number greater than 2.
For this problem, n=4. This would mean the formula is:
C₄H₂₍₄₎₋₂Thus
C₄H₈₋₂C₄H₆Thus the answer is 6, there are 6 hydrogen atoms.
7. A. How many moles of Calcium hydroxide (CaOH2) are needed to completely react with 14.5 mol of Phosphoric acid (H3PO4)?
2 H3PO4 + 3 Ca(OH)2 → 6 H(OH) + Ca3(PO4)2
a. How many moles of water (HOH) will be produced?
b. How many moles of Calcium Phosphate (CaOH2) will be produced?
Answer:
moles of calcium hydroxide= 21.75 mol
a) 43.5 mol
b) 7.25 mol
Explanation:
Please see the attached picture for the full solution.
what is Brownian motion
Answer: the erratic random movement of microscopic particles in a fluid, as a result of continuous bombardment from molecules of the surrounding medium. Brownian motion, or pedesis, is the random motion of particles suspended in a medium. This pattern of motion typically consists of random fluctuations in a particle's position inside a fluid sub-domain, followed by a relocation to another sub-domain. Brownian motion, also called Brownian movement, any of various physical phenomena in which some quantity is constantly undergoing small, random fluctuations. It was named for the Scottish botanist Robert Brown, the first to study such fluctuations (1827).
Hope this helps...... Stay safe and have a Merry Christmas!!!!!!!!! :D
Explanation:
Answer:
to and fro motion is called brownian motion
Identify each of the following:
most metallic Ge or Sb
largest atomic radius Sn or Bi
highest ionization energy Cl or Sb
Which of the following observations would be the expected indication that a reaction has taken place when a solution of cesium sulfate is mixed with strontium perchlorate.
Bubbling
Formation of percipitate
Formation of soluble salts
Formation of a gas
Answer:
Formation of precipitate
Formation of soluble salts
Explanation:
Let's consider the molecular equation that takes place when an aqueous solution of cesium sulfate is mixed with an aqueous solution strontium perchlorate.
Cs₂SO₄(aq) + Sr(ClO₄)₂(aq) ⇒ 2 CsClO₄(aq) + SrSO₄(s)
According to the solubility rules:
CsClO₄ is a soluble salt.SrSO₄ is an insoluble salt that precipitates as a solid.For a double displacement reaction to occur, at least one of the products must be insoluble or volatile.
Answer:
It's b) Formation of a precipitate
Explanation:
I took the quiz and got it right.
What is the empirical formula for a compound that is comprised of 54.0% sodium, 8.50% boron, and 37.5% oxygen by mass?
A) Na2B2O3.
B) Na3BO3.
C) Na3B2O2.
D) Na4BO4.
Answer:
B) Na3BO3.
Explanation:
Hello!
In this case, since percent compositions are used to identify the empirical formula of an unknown compound, we can assume we have 54.0 g of sodium, 8.50 g of boron and 37.5 g of oxygen, and we compute the moles of each one:
[tex]n_{Na}=54.0g*\frac{1mol}{23g} =2.35mol\\\\n_B=8.50g*\frac{1mol}{11g}=0.773mol\\\\n_O=37.5g*\frac{1mol}{16g}=2.34mol[/tex]
Now, we divide by the moles of boron as those are the fewest:
[tex]Na:\frac{2.35}{0.773}=3\\\\B:\frac{0.773}{0.773}=1\\\\O=\frac{2.34}{0.773}=3[/tex]
Thus, the empirical formula is B) Na3BO3.
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