If a stoichiometrically equivalent number of moles of acid and base are mixed, both reactants will be completely used up and the amount of heat produced can be predicted from the ratios of both coefficients. If non-stoichiometric amounts of acid and base are used, the limiting reactant will predict the amount of [Select produced and the amount of [ Select) given off. Be sure to select the answers for BOTH blanks before you click
Answers
If non-stoichiometric amounts of acid and base are used, the limiting reactant will predict the amount of product produced and the amount of heat given off.
When non-stoichiometric amounts of acid and base are used, one of the reactants will be in excess and the other will be limiting. The limiting reactant is the one that is completely used up in the reaction, and it determines the amount of product that can be produced. The amount of heat given off in the reaction is directly proportional to the amount of product produced, so the amount of heat given off can also be predicted based on the limiting reactant.
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Related Questions
which of these is a rough approximation of the cogito?
Answers
Given the Latin meaning of the cogito, we can confirm that it is roughly translated and summarized by the phrase "I think, therefore I am".
Cogito, ergo sum or "The Cogito" is an extremely popular, well-known philosophical phrase credited to Rene Descartes. This Latin phrase is roughly translated as "I think, therefore I am", which appeared originally in "The Principles of Philosophy", and was later translated to a variety of languages in an attempt to reach a wider public, most notably into Latin.
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Jocelyn and her friends put some raisins, hazelnuts,
almonds, and peanuts in a bowl to make a snack for their
hiking trip. What does this snack represent?
A. a solution
B. a new element
C. a new compound
D. a mixture
plspslsspslpsl help its revision for exam and i need it quick brainliest for the right answer :D
Answers
Answer: D. a mixture
Explanation: When you mix different types of nuts or snacks together including raisins, hazelnuts, almonds, and peanuts to make some kind of trail mix, then you are creating a mixture, specifically a heterogeneous mixture.
The setup in the diagram is left outside during the day and night . Bubbles are continuously produced regardless of the presence of sunlight.what can you predict of the composition in the bubbles
A. The bubbles are always O2
B. The bubbles are always carbon dioxide CO2
C. During the day the bubbles are CO2 and in the night O2
D. During the day they are O2 and in the night CO2
Answers
Answer:
A
Explanation:
The bubbles formed from the plants are always oxygen. The photosynthetic reaction taking place in the plants release oxygen molecules.
What is photosynthesis ?Photosynthesis is the biochemical process of synthesizing chemical energy by green plants with the aid of light energy. They store this chemical energy in the form of glucose.
In photosynthetic reaction, water and carbon dioxide are combined to produce glucose and oxygen gas. The bubbles formed in the reaction is oxygen gas.
This process is an event in the carbon cycle to balance the amount of carbon dioxide in the atmosphere and in living matter. Photosynthesis provide the sufficient oxygen for respiration for animals. Hence, option A is correct.
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What is the oxidation number of carbon in the compound carbon dioxide, CO2?
A) +3
B)+2
C)-3
D)+4
Answers
Answer:
the oxidation number is 4
What happens to water molecules when they freeze and become solid ice?
Answers
The potential energy of water is decreased when water molecules when they freeze and become solid ice.
Because molecules have energy, they move constantly. Water molecules move more quickly and are essentially in continuous interaction with one another when they are in a liquid state instead of to a solid state.
The potential energy of the liquid decreases as it cools, which causes the molecules to start moving more slowly. The molecules of water bind together at a temperature of about 0°C to produce ice.
Intermolecular hydrogen bonds keep water molecules together, make it a liquid.
Hence, When water molecules freeze and turn into solid ice, their potential energy decreases.
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Explain why copper has a high thermal conductivity.
Explain why copper has a high electrical conductivity.
i just need like a basic explanation for an essay
Answers
Explanation:
So copper is a lattice of positive copper ions with free electrons moving between them.
Identify the combustion reaction
Answers
Answer:
C₄H₁₂ + 7O₂ --> 4CO₂ + 6H₂O
Explanation:
Organic molecules react with O2 to create water and CO2 in combustion processes. C4H12 is an organic molecule that combines with O2 to create water and CO2 as shown in the reactions.
As a result, this is the sole reaction that obeys the general combustion equation.
This is a sign of a chemical reaction that involves the production of bubbles or fizzing
Answers
Answer:
gas production
Explanation:
Answer:
gas formation
Explanation:
frothy bubbles produced by carbon dioxide gas are a sign that a chemical reaction has occurred when a based is mix with acid.
HELP ASAP DUE IN 5 MINUTES
Answers
the second one i think, hope this helps
Answer:
a
Explanation:
When we need to make solutions with multiple concentrations, we usually make up a highly concentrated solution called a "stock solution." This stock solution is then diluted to make other solutions of known concentration, sometimes referred to as "standards." You make a stock solution using 10.73 mg of a dye with a molar mass of 287.4 g/mol and you add water until you reach a volume of 500.0 mL. What is the concentration of the dye in this stock solution?
If you use 14.0 mL of the stock solution (from the previous question) and add water to make a new solution with a total volume of 50.0, what is the concentration of the dye in the new solution (in mM)?
Answers
The concentration of the dye in the new solution is 20.8 µM.
To find the concentration of the dye in the stock solution, follow these steps:
1. Convert the mass of the dye (10.73 mg) to grams: 10.73 mg × (1 g / 1000 mg) = 0.01073 g
2. Calculate the moles of the dye: 0.01073 g / 287.4 g/mol = 3.73 × \(10^{-5\)mol
3. Calculate the concentration (molarity) of the dye in the stock solution: (3.73 × \(10^{-5\) mol) / (500.0 mL × (1 L / 1000 mL)) = 7.46 × \(10^{-5\)M or 74.6 µM
To find the concentration of the dye in the new solution after dilution:
1. Calculate the moles of the dye in 14.0 mL of stock solution: (7.46 × \(10^{-5\) mol/L) × (14.0 mL × (1 L / 1000 mL)) = 1.04 × \(10^{-6\) mol
2. Calculate the concentration (molarity) of the dye in the new solution: (1.04 ×\(10^{-6\) mol) / (50.0 mL × (1 L / 1000 mL)) = 2.08 × \(10^{-5\)M or 20.8 µM
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how do meteror showers happen
Answers
Answer:
A meteor shower happens when Earth passes through the path of a comet. When this happens, the bits of comet debris, most no larger than a grain of sand, create streaks of light in the night sky as they burn up in Earth's atmosphere. Bits of debris which enter Earth's atmosphere are called meteors.
There is a series of nitrogen oxides with the general formula N?O?. What is the empirical formula of one that contains 63.66% nitrogen?
Answers
Answer:
N₂O
Explanation:
Empirical formula is defined as the simplest whole number ratio of atoms presents in a molecule
For a nitrogen oxide that contains 63.66% of nitrogen, the percent of oxygen must be:
100-63.66 = 36.34% Oxygen
This percent is the percent in mass. To solve this question we must convert the mass of each atom to moles in order to find the simplest whole number ratio:
Moles of the atoms:
N = 63.66g * (1mol / 14g) = 4.547 moles N
O = 36.34g * (1mol / 16g) = 2.271 moles O
The ratio N:O is:
4.547 moles N / 2.271 moles O = 2
That means there are 2 atoms of N per atom of O and the empirical formula is:
N₂Omol Of Monatomic Gas A Initially Has 5000 J Of Thermal Energy. It Interacts With 2.6mol Of Monatomic Gas B, Which Initially Has 8500J Of Thermal Energy. Which Gas Has The Higher Initial Temperature? Gas A Or B? 2-What Is The Final Thermal Energy Of The Gas A? 3-What Is The Final Thermal Energy Of The Gas B?
2.3mol of monatomic gas A initially has 5000J of thermal energy. It interacts with 2.6mol of monatomic gas B, which initially has 8500J of thermal energy.
Which gas has the higher initial temperature?
Gas A or B?
2-What is the final thermal energy of the gas A?
3-What is the final thermal energy of the gas B?
Answers
1. Gas B has the higher initial temperature. 2. The final thermal energy of gas A depends on the energy transferred between the gases, and 3. the final thermal energy of gas B depends on the energy transferred from gas A.
To determine which gas has the higher initial temperature, we compare their initial thermal energies. Gas A initially has 5000 J of thermal energy, while gas B has 8500 J of thermal energy. Since gas B has a higher initial thermal energy, it also has the higher initial temperature.
To find the final thermal energy of gas A, we need to consider the energy transferred between the gases. Without additional information about the nature of their interaction or any work done, we cannot determine the exact final thermal energy of gas A. It will depend on the energy transferred during the interaction.
Similarly, to find the final thermal energy of gas B, we need more information about the energy transfer between the gases. The final thermal energy of gas B will depend on its initial energy of 8500 J and the energy it receives from gas A during their interaction.
Without molar specific heat capacity about the energy transfer mechanism, it is not possible to calculate the exact final thermal energies of gas A and gas B. Additional information about the specific conditions and process of their interaction would be required to determine the final thermal energies accurately.
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The Complete question is
2.3 mol of monatomic gas A initially has 5000J of thermal energy. It interacts with 2.6mol of monatomic gas B, which initially has 8500J of thermal energy.
Which gas has the higher initial temperature?
1- Gas A or B?
2- What is the final thermal energy of the gas A?
3- What is the final thermal energy of the gas B?
Sound travels at 340 m/s in dry air at room temperature. What is the
wavelength of sound waves with a frequency of 880 Hz under those
conditions?
Answers
Answer:
Wavelength of sound waves\(\ambda = 386\) millimetres
Explanation:
The speed of any wave is equal to the product of its wavelength and frequency.
This can be represented mathematically as
\(V = f* \lambda\)
Where
V is the speed of sound waves
f is the frequency of sound waves
and
\(\lambda\) is the wavelength of the sound waves.
Substituting the given values in above equation we get -
\(340 = f * \lambda\\\lambda = \frac{340}{880} \\\)
\(\lambda = 0.386\) meters
\(\ambda = 386\) millimetres
How many moles of carbon dioxide (CO2) is produced when 76.9 g of oxygen (O2) is consumed when butane is burned? The balanced equation is 2 C4H10 + 13 O2 → 8 CO2 + 10 H2O. Show all of your work for full credit.
Answers
2 C4H10 + 13 O2 → 8 CO2 + 10 H2O.
in the laboratory, a quantity of i2 was reacted with excess h2 to give 0.530 moles of hi. it is also known that the percent yield of this reaction was 72.0%. how many moles of i2 reacted? (hint: write a balanced equation.)
Answers
Knowing that the percent yield of this reaction was 72.0%, then 0.3681 moles I₂ was reacted with excess H₂.
Percent yield is defined as the ratio of the actual yield to the theoretical yield multiplied by 100.
Percent yield = (actual yield / theoretical yield) x 100
If a quantity of I₂ was reacted with excess H₂ to give 0.530 moles of HI, and the percent yield of this reaction was 72.0%, then the theoretical yield of the reaction should be 0.7361 moles of HI.
Percent yield = (actual yield / theoretical yield) x 100
72 = (0.530 / theoretical yield) x 100
theoretical yield = 0.7361 moles
Then, write a balanced equation for the reaction of I₂ and H₂ to produce HI.
I₂ + H₂ ⇒ 2 HI
From the balanced equation, 1 mole of I₂ requires 1 mole of H₂ to produce 2 moles of HI.
Theoretically, there should be 0.7361 moles of HI.
Let x = moles of I₂
1 mole of I₂ : 2 moles of HI = x mole of I₂ : 0.7361 moles of HI
x = 0.3681 moles I₂
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Which of the following is an electrical insulator? and explain why is that the correct answer
a. copper
b. rubber
c. aluminum
d. iron
Answers
Answer: yo ngl I honestly dont know sry
Explanation:
Answer:
B.sorry the answer is rubber and copper is an example of conductor
What might you expect for the value of S∘ (entropy) for butane, C4H10?
Entropies provided (Hint: entropy increases with increasing molecular complexity):
- CH4=186.3(J/mol*K)
-C2H6=229.6(J/mol*K)
-C2H8=270.3(J/mol*K)
Answers
Answer:
310.1 J/mol * K
Explanation:
since entropy increases with increasing molecular complexity The Value of s ( entropy ) for Butane, C4H10 will be
= 310.1 J/mol * K
Given that :
Methane ( CH4 ) = 186.3 J/mol*K
Ethane ( C2H6 ) = 229.6 J/mol*K
propane ( C3H8 ) = 270.3 J/mol*k
Which image depicts the initial atoms when calcium and sulfur form an ionic compound?
A
B
C
D
Answers
The image depicts the initial atoms when calcium and sulfur form an ionic compound is the third number image. Therefore, option C is correct.
What is an ionic compound ?The term an ionic compound is defined as compounds consist of ions that create charged particles when an atom or group of atoms gains or loses electrons.
A cation is an ion charged positively, and an anion is an ion charged negatively.
When calcium atom and sulphur atom reacts there is formation of an ionic compound. In the compound calcium sulphide, Ca acts as a cation, and S acts as an anion.
Thus, option C is correct.
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The Himalayan mountain range of India was formed at a
convergent
divergent
transform
Answers
convert 1.76×10²⁷ atoms of strontium to grams
Answers
On converting 1.76x10²⁷ atoms of Strontium to grams we get 256020g
It is given that the number of atoms of Strontium is 1.76×10²⁷. To convert the number of atoms of Strontium to grams, the following formula is used:
Grams of Strontium= number of atoms of Strontium × Atomic Mass of Strontium/Avagadro number
We know that the atomic mass of Strontium is 87.6g. Its atomic number is 38. Then the number of grams of Strontium in 1.76x10²⁷ atoms is given by
Grams of Strontium= (1.76 x 10²⁷ x 87.6) / 6.022x10²³
= 154.176x10⁴/6.022
= 25.602 x 10⁴
=256020g
In this way, the conversion of atoms into grams can be done easily.
Therefore, 1.76 x 10²⁷ atoms of Strontium on conversion to grams give 256020g.
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cobalt-56 has a half-life of 77.27 days. if we start with a 20 gram sample of co-56, how much will remain after 150 days?
Answers
If cobalt-56 has a half-life of 77.27 days. if we start with a 20-gram sample of co-56, 5.20 grams of cobalt-56 will remain after 150 days.
The given data is as follows:
cobalt-56 has a half-life = 77.27 days
cobalt-56 sample initial mass = 20grams
No of remaining days = 150 days
The exponential decay is used to calculate the given problem.
The general equation used here to calculate here is:
Remaining sample = \(A(\frac{1}{2})^{\frac{t}{h} }\)
= \(20*(\frac{1}{2})^{\frac{150}{77.27} }\)
= \(20*( \frac{1}{2} )^{1.94}\)
= 20 * (0.26)
Remaining sample = 5. 20 grams.
Therefore, we can conclude that 5.20 grams of cobalt-56 will remain after 150 days.
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a mixture of the compounds ferrocene and acetylferrocene was run through a silica column. one compound eluted with a nonpolar solvent, the other needed a polar solvent to elute. draw a tlc plate representing the mixture and label the two compounds.
Answers
Due to its lower polarity and fewer interactions with the adsorbent, ferrocene was the first substance to elute from the column.
Define column chromatography
When doing microscale research, column chromatography is one of the most helpful techniques for the separation and purification of both solids and liquids. The polarity and binding strengths that the constituents of a mixture have for column absorbents are utilised by chromatography. Adsorbents are stationary phase components with a large surface area that bind solute molecules.
Due to its lower polarity and preference for the less polar solvent, ferrocene went along the column more quickly. Based on the same theories, it travelled farther on the TLC plate because it is less polar and has a lesser affinity for the silica gel.
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a balloon contains 0.76 mol n2, 0.18 mol o2, 0.031 mol he and 0.026 mol at 739 mm hg. what is the partial pressure of o2?
Answers
Assume that every gas in the list will act perfectly. Using the mole fraction of O2 and the specified pressure, the partial pressure of O2 may be computed (P).
What is specified?
The following diagram illustrates the mathematical link between partial pressure of oxygen (P1) and oxygen mole fraction (X1):
P₁=X₁P
By dividing the total number of moles of gases (0.76 + 0.18 + 0.031 + 0.026) by the number of moles of O2 (0.18 mol), it is possible to determine the mole fraction of O2 as follows:
X₁= 0.18 / (0.76+0.18+0.031+0.026)= 0.1805
In this manner, the partial pressure of O2 (P1) is determined:
P1=0.1805x739mmHg, or 133.4mmHg
According to the estimate above, the partial pressure of oxygen is almost equal to 130 mm Hg. As a result, option C is the best one.
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describe what you would see if you dropped a piece of magnesium ribbon into some copper sulphate solution in a test tube. write the word equation and chemical equation for the reaction.
Answers
When a piece of magnesium ribbon is dropped into Copper Sulfate Solution, magnesium is reactive metal than copper in Copper sulfate and Copper Metal it will displace copper forming magnesium Sulphate and copper metal.
Magnesium + Copper Sulphate ⇒ Magnesium Sulphakt Copper
My (s) + Cuso4 (aq) ⇒ Mg so4 lag + Cu(s).
When magnesium is put into a copper sulfate solution an oxidation-reduction reaction occurs, forming copper metal on the magnesium, and the dark blue color of the solution disappears. After a few minutes, hydrogen gas bubbles form on the surface usually with coils of magnesium ribbon floating on it.
The solution becomes lighter during the reaction and the blue color of the copper sulfate solution does not darken. Therefore option C is the correct answer. It should be noted that the reaction taking place here is a substitution reaction in which a more reactive metal displaces a less reactive metal.
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Here is the answer
I hope it helped you
What is the balanced equation to Fe(OH)3 + H2SO4 yields H2O + Fe(SO4)3
Answers
The balanced chemical equation for reaction between iron (III) hydroxide and sulfuric acid is 2 Fe(OH)₃ + H₂SO₄ \(\rightarrow\) 6 H₂O + Fe₂(SO₄)₃.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.
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Atoms of two different elements must have different
Answers
Answer:
Atoms of two different elements must have different atomic numbers.
Explanation:
Fill in a word that correctly completes the sentence.
The nucleus is a large, oval organelle in a cell. It contains the cell's genetic material in the form of
and controls many of the cell's activities.
Answers
A large oval organelle found in cells that stores DNA, the cell's genetic material, and regulates a number of its activities.
Describe an organelle:Like an organ in the body, an organelle is a subcellular structure that serves one or more specific duties for the cell. Some of the more important cell organelles are the nucleus, which contains genetic information, the mitochondria, which provide energy stored, and the ribosomes, which assemble proteins.
What is an example of organelle?The nucleus, mitochondria, endosomal, the endoplasmic, and the Golgi apparatus are a few of the important organelles. Chloroplasts, which are involved in photosynthesis, are also present in plant cells.
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If the density of mercury is 13.6g/ml, what is the mass in grams of 3426 ml of the liquid?
A copper cylinder, 12.0 cm in radius, is 44.9 cm long. If the density of copper is 8.90 g/cm^3, calculate the mass in grans of the cylinder. (Assume pi=3.14
Answers
Answer:
Explanation:
Mass=density×volume
Mass=13.6g/ml×3426ml
Mass=46,593.6 g
1.Which Statement best describes the use of a catalyst in a fuel cell?
A.It reduces waste
B.It lowers energy requirements
C.It reduces toxic exhaust
D.It increases reaction rates
Answers
Answer: D. It Increases reaction rates.
Explanation:
Answer:
D. It Increases reaction rates.
Explanation: