Answers
Answer:
H^+(aq) + OH^-(aq) —> H2O(l)
Explanation:
We'll begin by writing the balanced equation for the reaction.
2HCl(aq) + Ca(OH)2(aq) —> CaCl2(aq) + 2H2O(l)
Ca(OH)2 is a strong base and will dissociates as follow:
Ca(OH)2(aq) —> Ca^2+(aq) + 2OH^-(aq)
HCl is a strong acid and will dissociates as follow:
HCl(aq) —> H^+(aq) + Cl^-(aq)
Thus, In solution a double displacement reaction occurs as shown below:
2H^+(aq) + 2Cl^-(aq) + Ca^2+(aq) + 2OH^-(aq) —> Ca^2+(aq) + 2Cl^-(aq) + 2H2O(l)
To get the net ionic equation, cancel out Ca^2+ and 2Cl^-
2H^+(aq) + 2OH^-(aq) —> 2H2O(l)
H^+(aq) + OH^-(aq) —> H2O(l)
Related Questions
Local winds can be caused by______heating of the earth's surface.
equal
ground
uneven
super
Answers
1 Srcl (aq) + 1 H,60,(aq) → 2 HCl(aq) + 1 Srso (s)
What is the mass of strontium chloride that reacts with 300.0 g of sulfuric
acid?
Answers
Answer:
Mass = 245.72 g
Explanation:
Given data:
Mass of SrCl₂ react = ?
Mass of H₂SO₄ = 300.0 g
Solution:
SrCl₂ + 2H₂SO₄ → 2HCl + Sr(HSO₄)₂
Number of moles of H₂SO₄:
Number of moles = mass/molar mass
Number of moles = 300.0 g/ 98.079 g/mol
Number of moles = 3.1 mol
Now we will compare the moles of SrCl₂ and H₂SO₄.
H₂SO₄ : SrCl₂
2 : 1
3.1 : 1/2×3.1 = 1.55 mol
Mass of SrCl₂:
Mass = number of moles × molar mass
Mass = 1.55 mol × 158.53 g/mol
Mass = 245.72 g
can metal be recognised as a good heat shield? why or why not??
Answers
Answer:
In summary, because of metal's unique properties, it can be an excellent heat shield (such as when aluminum foil is wrapped around warm food) or an excellent heat sink (such as when metals fins are attached to computer chips).
how many miligrams are in 75 nanogram?
Answers
Answer:
7.5e-5 that's the answer
Explain how electron microscopes work and why some scientists might prefer to use electron microscopes instead of light microscopes.
Answers
Answer:
Electron microscopes differ from light microscopes in that they produce an image of a specimen by using a beam of electrons rather than a beam of light. Electrons have much a shorter wavelength than visible light, and this allows electron microscopes to produce higher-resolution images than standard light microscopes.
Explanation:
What frequency does a photon of wavelength 4.5 x 10-4 m have?
A. 6.67 x 1011 Hz
B. 1.47 x 10-30 Hz
C. 2.98 x 10-37 Hz
D. 1.35 x 105 Hz
SUBMIT
Answers
Answer:
6.67* 1011 Hz
Explanation:
a p e x
Answer:
Awnser above is correct
Explanation:
a. 6.67
How many kilojoules of heat are needed to raise the temperature of 10g of aluminum from 22 degrees C to 55 degrees C, if the specific heat of aluminum is .901 j/gc?
Answers
Answer:
name four agricultural inputs are subsidized by the government
0.297 kJ of heat is needed to raise the temperature of 10g of aluminum from 22 degrees Celsius to 55 degrees Celsius.
The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius.
It is a measure of how much energy it takes to raise the temperature of a substance. It is the amount of heat necessary to raise one mass unit of that substance by one temperature unit.
It is given by the formula -
Q = mcΔT
where, Q = amount of heat
m = mass
c = specific heat
ΔT = Change in temperature
Given,
mass = 10g
c = 0.901J/g⁰C
Initial temperature (T₁) = 22⁰C
Final Temperature (T₂) = 55⁰C
Q = mcΔT
= 10 × 0.901 × (55 -22)
= 297.33 J = 0.297 kJ
Learn more about Specific heat, here:
https://brainly.com/question/31608647
#SPJ1
Use the dropdown menus to complete the following statements explaining the concept of freezing point depression.
Hint: It may be helpful to review the introduction section of FPD in your lab manual.
In a pure solvent ____
The presence of solute ___
The solvent's freezing point ___
Answers
In a pure solvent, the freezing point is a constant. The presence of solute causes the freezing point of the solvent to decrease. The solvent's freezing point is depressed.
A solution's freezing point is lower than that of the pure solvent's. This indicates that freezing can only take place when a solution is lowered to a lower temperature than the pure solvent. Road salting in water is a relatively prevalent example of this occurrence in daily life. At 0°C, pure water freezes. In a pure solvent, the freezing point is the temperature at which the solvent will form a solid. The presence of solute particles interferes with the ability of the solvent molecules to form a solid, causing the freezing point to decrease. The solvent's freezing point is thus lowered or "depressed" by the addition of solute particles.
To learn more about solvent click here https://brainly.com/question/30452436
#SPJ4
1. In the simple cubic unit cell, the centers of ____________ identical particles define the ____________ of a cube. The particles do touch along the cube's ____________ but do not touch along the cube's ____________ or through the center. There is/are ____________ particle per unit cell and the coordination number is ____________ .
2. In the body-centered cubic unit cell, the centers of ____________ identical particles define the ____________ of the cube plus ____________ particle at the ____________ of ____________ . The particles do not touch along the cube's ____________ or faces but do touch along the cube's ____________ . There is/are ____________ particles per unit cell and the coordination number is ____________ .
3. In the face-centered cubic cell, the centers of ____________ identical particles define the ____________ of the cube plus ____________ particle in the ____________ of ____________ . The particles on the ____________ do not touch each other but do touch those on the ____________ . There is/are ____________ particles per unit cell and the coordination number is ____________ .
Answers
Answer:please see below for answers in the spaces given.
Explanation:
There are three types of cubic-unit cells of a cubic system which include Simple cubic unit cell, body-centered cubic unit cell and face-centered cubic-unit cell and Thier characteristics are completed below.
1) In the simple cubic unit cell, the centers of _______eight _____ identical particles define the _________corners___ of a cube. The particles do touch along the cube's _______edges_____ but do not touch along the cube's ____diagonal_______ or through the center. There is/are _______one_____ particle per unit cell and the coordination number is
__six______ .
2. In the body-centered cubic unit cell, the centers of _______eight _____ identical particles define the _______corners_____ of the cube plus ______one______ particle at the _______center_____ of ______the cube______ . The particles do not touch along the cube's _______edges_____ or faces but do touch along the cube's ____diagonal________ . There is/are _____two_______ particles per unit cell and the coordination number is _____eight_______ .
3. In the face-centered cubic cell, the centers of ______eight______ identical particles define the _______corner____ of the cube plus ________one____ particle in the _____center_______ of ______each face______ . The particles on the _____corners_______ do not touch each other but do touch those on the ______faces____ . There is/are ________four___ particles per unit cell and the coordination number is _____twelve_______ .
Plants use sunlight to produce some ATP during photosynthesis. How do plants produce ATP when the Sun is not out?
Plants are secondary consumers.
Plants also use cellular respiration.
Plants extract ATP from the stars.
Plants are weak in the dark.
Answers
Answer:
The answer is
Plant also use cellular respiration
Answer:
B - Plants also use cellular respiration.
Explanation:
Did the test.
How many electrons will an Oxygen (O) atom gain or lose in forming an ion?
Answers
Answer:
two electrons.... oxygen needs two electrons to attain stability
What happens to gas particles when they are compressed?
1)Gas molecules move further apart.
2)Gas molecules get closer together.
3)Some gas molecules move further apart and some move closer together.
Answers
Answer:
3)Some gas molecules move further apart and some move closer together.
Explanation:
because When more gas particles enter a container, there is less space for the particles to spread out, and they become compressed. The particles exert more force on the interior volume of the container. This force is called pressure. There are several units used to express pressure.
What type of bond will magnesium selenide form?
A. A polar covalent bond
B. A covalent bond
C. A nonpolar covalent bond
D. An ionic bond
Answers
Answer:
B. a covalent bond.
Which one of these situations would have higher density water? Water with a lower salt content Water at the equator Water near where a river enters the ocean Lower temperature water
Answers
A higher density water will be obtained in lower temperature water.
What is density?Density is the fluid property that describes the amount of solutes that dissolves in a given volume of the fluid.
Density of a fluid is calculated by taking the ratio of mass to volume of the fluid.
\(\rho = \frac{m}{v}\)
When the temperature of the water is low, more mass of the water is obtained while a high temperature evaporates the liquid.
Thus, a higher density water will be obtained in lower temperature water.
Learn more about density of water here: https://brainly.com/question/16794306
how would you confirm the presence of lead in an ore?
Answers
There are numerous ways to determine whether lead is present in an ore. Atomic absorption spectroscopy is a popular approach. With this method, an ore sample is dissolved in acid and then atomized in a flame or plasma.
The sample's atoms will absorb light at particular wavelengths that are peculiar to the element under investigation. The amount of light absorbed can be used to calculate how much lead is present in the sample. Inductively coupled plasma mass spectrometry and X-ray fluorescence spectroscopy are further techniques. It is crucial to remember that these procedures call for specialized tools and training, thus they ought to only be carried out in a lab by qualified experts.
To know more about spectrometry, here
brainly.com/question/31075363
#SPJ1
Look at the diagram below , which shows gas particles in a container. If the piston was lowered, so that the size of the container decreases, what would happen to the pressure? Explain your reasoning. In your explanation, include which gas law (Boyle's law, Charles' law, or Gay-Lussac's law) this involves.
Answers
The pressure of the gas is expected to increase in accordance to Boyle's law.
What is Boyle's law?Boyle's law states that, the volume of a given mass of gas is inversely proportional to its pressure at constant temperature.
By implication, when the piston is lowered and the volume of the gas is decreased, the pressure of the gas is expected to increase in accordance to Boyle's law.
Learn more about Boyle's law: https://brainly.com/question/1437490
these three equal sized insulated containers Based on the data from the first two samples, what would be your estimate for the final temperature for 50 gram sample?
Answers
As a result, the 50 gramme sample's estimated end temperature is around 37.57°C.
What is the thermal equilibrium formula?The amount of energy in a system that is available to perform beneficial work at a constant temperature is shown by the Helmholtz free energy equation, often known as the thermal equilibrium equation (F = U - TS). The Helmholtz free energy (F), internal energy (U), absolute temperature (T), and entropy are the variables in the Helmholtz equation (S).
Two things are in when they both attain the same temperature?Two items are said to have the same temperature when they are in thermal equilibrium. Heat, a kind of energy, is transmitted between the objects as they approach thermal equilibrium.
To know more about temperature visit:-
https://brainly.com/question/30863015
#SPJ1
Given the balanced reaction above, if 0.350 g of CaCO3 is reacted with 45 mL of 1.5 M HCl then which reagent is the limiting reagent and what mass of carbon dioxide should be produced in theory?Complete and balance the following exchange (Hint one of the products is CO2)CaCO3(s) + HCl (aq) →
Answers
Answer:
\(\begin{gathered} CaCO_3\text{ is the limiting reagent} \\ 0.154\text{ g of CO}_2\text{ would be produced in theory} \end{gathered}\)Explanation:
We start by completing the balanced equation of the reaction.
We have that as:
\(CaCO_3\text{ + 2HCl }\rightarrow\text{ CaCl}_2\text{ + H}_2O\text{ + CO}_2\)Now, we want to get the limiting reagent
The limiting reagent is the reagent that produces less amount of the product
Now, let us get the number of moles of CaCO3 that reacted
That would be the mass of CaCO3 given, divided by the molar mass of CaCO3
The molar mass of CaCO3 is 100 g/mol
Thus, the number of moles of CaCO3 that reacted will be:
\(\frac{0.350}{100}\text{ = 0.0035 mol}\)Now, let us get the number of moles of CO2 produced
That would be 0.0035 mol too since the mole ratio of CaCO3 to CO2 in the balanced equation of reaction is 1:1
We proceed to get the number of moles of HCl that reacted
We can get this by multiplying the given molarity by the volume in liters
We have that as:
\(1.5\text{ }\times\frac{45}{1000}\text{ = 0.0675 mol}\)From here, the number of moles of CO2 produced is half, since the mole ratio is 1 to 2
The number of moles of CO2 produced will be:
\(\frac{0.0675}{2}\text{ = 0.03375 mol}\)The number of moles of CO2 produced by CaCO3 is lesser, and that means it is the limiting reagent
Now, to get the mass of CO2 produced in theory, we multiply the number of moles by the molar mass of CO2
The molar mass of CO2 is 44 g/mol
Thus, we have the mass that was produced as:
\(44\text{ }\times\text{ 0.0035 = 0.154 g}\)10. A sample of an unknown composition was tested in a laboratory. The sample could not be broken down by
physical or chemical means. On the basis of these results, the laboratory reported that the unknown sample was
most likely
A. a compound
B. an element
C. a mixture
Answers
Answer:
it would be an element because its an element
Explanation:
Someone help me I don’t know
Answers
Answer:
What's the gas given in the question??
You need to prepare 50.00 mL of a pH 4.75 buffer solution using 0.600 M formic acid (pKa=3.74) and a 0.3000 M sodium formate. How many milliliters of formic acid are needed to prepare this buffer?
Answers
0.766 mL volume of formic acid is needed to prepare the buffer.
What is volume of formic acid?
To calculate the amount of formic acid needed to prepare the buffer, we can use the Henderson-Hasselbalch equation:
pH = pKa + log([A-]/[HA])
where pH is the desired pH of the buffer, pKa is the acid dissociation constant of the weak acid, [A-] is the concentration of the conjugate base, and [HA] is the concentration of the weak acid.
First, we can rearrange the Henderson-Hasselbalch equation to solve for the ratio of [A-]/[HA]:
[A-]/[HA] = \(10^{(pH - pKa)}\)
[A-]/[HA] = \(10^{(4.75 - 3.74)}\)
[A-]/[HA] = 3.52
Next, we can use the fact that the sum of the concentrations of [A-] and [HA] must be equal to the total volume of the buffer solution times the total concentration of the buffer components:
[A-] + [HA] = (0.0500 L)(0.600 M + 0.3000 M)
[A-] + [HA] = 0.0450 mol
We can also express [A-] in terms of [HA] using the ratio we calculated above:
[A-] = 3.52[HA]
Substituting this into the previous equation, we get:
3.52[HA] + [HA] = 0.0450 mol
4.52[HA] = 0.0450 mol
[HA] = 0.00994 mol
Finally, we can use the molar mass of formic acid (46.03 g/mol) to calculate the volume of formic acid needed to prepare the buffer:
volume of formic acid = (0.00994 mol)(46.03 g/mol) / (0.600 mol/L)
volume of formic acid = 0.766 mL
Therefore, 0.766 mL of formic acid is needed to prepare the buffer.
To know more about formic acid, visit:
https://brainly.com/question/23660183
#SPJ1
How many atoms make up 2.7 moles of Titanium?
Answers
Answer:
Approximately 1.62894 x 10^24 atoms.
Explanation:
To determine the number of atoms in 2.7 moles of titanium, we need to use Avogadro's number, which is the number of atoms in one mole of an element.
Avogadro's number is approximately 6.022 x 10^23. This means that one mole of any substance contains 6.022 x 10^23 particles (atoms or molecules).
The molar mass of titanium is approximately 47.87 g/mol.
To calculate the number of atoms in 2.7 moles of titanium, we can use the following formula:
number of atoms = (number of moles) x Avogadro's number
number of atoms = 2.7 moles x 6.022 x 10^23 atoms/mole
number of atoms = 1.62894 x 10^24 atoms
Therefore, 2.7 moles of titanium contains approximately 1.62894 x 10^24 atoms.
Answer: 23 atoms
Explanation:
1 mole is 6.02x10
1 mole = atomic mass
It is desired to produce 9.26 grams of iron(III) chloride by the following reaction. If the percent yield of iron(III) chloride is 80.1 %, how many grams of iron would need to be reacted?
Answers
It is desired to produce 9.26 grams of iron(III) chloride by the following reaction. If the percent yield of iron(III) chloride is 80.1 %, 4.16g of iron would need to be reacted.
What is mass?A body's mass is an inherent quality. Before the discovery of the atom as well as particle physics, it was widely considered to be tied to the amount of matter inside a physical body.
It was discovered that, despite having the same quantity of matter in theory, various atoms and elementary particles had varied masses.
theoretical yield =9.26/80.1 =13.85g
4Fe + 3Cl\(_2\) →2 FeCl\(_3\)
moles of FeCl\(_3\) =13.85/159.69=0.08 mol
2 mole of FeCl\(_3\) produce from 3 moles of iron
1 mole of Fe\(_2\)O\(_3\) produce from 3/2 moles of iron
0.08 mole of FeCl\(_3\) produce from (3/2)×0.08 =0.13 moles of iron
mass of iron =0.13×52=4.16g
Therefore, 4.16g of iron would need to be reacted.
To know more about mass, here:
https://brainly.com/question/28704035
#SPJ1
All About the Periodic Tabl
What is the Periodic Table of Elements?
Answers
Answer:
table of the chemical elements arranged in order of atomic number,
Explanation:
usually in rows, so that elements with similar atomic structure (and hence similar chemical properties) appear in vertical columns.
In which environment is erosion likely to have the most impact?
a steep hillside with little vegetation and strong downpours
a steep hillside covered with grasses and mild downpours
a flat valley with little vegetation and heavy downpours
a flat valley covered with grasses and mild downpours
Answers
Answer:
A. Steep hillside, little vegetation, strong downpours
Explanation:
between a steep hill and a flat valley, the hill is more likely to be affected because of gravity. with a valley theres less places for the dirt to actually move to. So C and D are not correct
a lack of vegetation and heavy downpour is the perfect condition for erosion. plants' root system makes dirt and rock more stable. without a lot of roots to hold the dirt in place and absorb water before it runs over the rocks and breaks them down, heavy rain would be a lot more likely to erode the area. so B isnt right either
What are some potential real-world applications for renewable energy sources such as solar power and wind power?
Answers
The some of the potential in the real world applications for the renewable energy sources such as the solar power and the wind power are electricity generation, the water heating and cooling, and the transportation.
Renewable energy defined as the energy produced from the sources like the sun and the wind energy which are the naturally replenished and which do not run out.
The Renewable energy which can be used for the electricity generation, and the water heating and the cooling, and the transportation. The most sustainable sources of the energy are the renewable bioenergy. The Renewable sources of the, like the wind and the solar, it will emit the little to no the greenhouse gases.
To learn more about renewable energy here
https://brainly.com/question/18004988
#SPJ1
What is the critical temperature of water? What does this temperature value represent?
Answers
between cold hot so i guess regular
Answer:
374oC
critical temperature (oC)
Tubes containing water at several temperatures. Note that at or above 374oC (the critical temperature for water), only water vapor exists in the tube.
I hope this helps
Which of the following intermolecular forces is the strongest?
A. Hydrogen bonding
B. Van der Waals forces
C. Dipole-dipole attractions
D. Induced dipole attractions
SUBMIT
Answers
Answer:
A. Hydrogen Bonding
Explanation:
Answer:
Hydrogen bonding
Explanation:
because it has the highest electronegative force
What is the limiting reactant in CaCO3 + HCl = CaCl2 + CO2 + H2O?
Answers
Limiting reactant in CaCO3 + HCl = CaCl2 + CO2 + H2O is HCl.
Why is HCl the limiting reactant?HCl is the limiting reactant because HCl has a lower molar ratio than CaCO3 in the balanced equation.
For every 1 mole of CaCO3, 2 moles of HCl are required to react completely.
However, in the given reaction providd, there is only 1 mole of HCl. This means that the HCl will be used up first, and the CaCO3 will be in excess.
The limiting reactant is the one that gets completely consumd first in the chemical reaction, thus determining the maximum amount of product that can be formed.
Find more exercises on limiting reactant;
https://brainly.com/question/28938721
#SPJ1
what is the relationship between temperature and kinetic energy?
Answers
Answer:
Temperature is directly proportional to the kinetic energy of the atoms that a body is made of. This relation is valid concerning the velocities relative to the center of mass of the body. In other words, concerted movements like translation and rotation do not affect temperature.
Explanation:
Answer:
As stated in the kinetic-molecular theory, the temperature of a substance is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles.
I hope it's helpful!