Answer:
30 2 the second power
Explanation:
Calcium hydroxide, commonly known as hydrated lime or slaked lime, is a soft white powder that is used as a primary ingredient in the chemical industry.
What is Calcium Hydroxide?Its chemical formula is Ca(OH)2. When calcium oxide and water are combined, it produces.
There are two hydroxide ions (OH) in the molecule for every calcium ion (Ca2+). The substance is ionic, and both electrolytic and aqueous dissociations result in calcium and hydroxide ions.
When water is added to dry portland cement to create concrete, this reaction takes place, and the mixture warms up and releases heat. An alternative method of manufacturing entails an aqueous double displacement reaction between sodium hydroxide and calcium chloride.
Therefore, Calcium hydroxide, commonly known as hydrated lime or slaked lime, is a soft white powder that is used as a primary ingredient in the chemical industry.
To learn more about Calcium hydroxide, refer to the link:
https://brainly.com/question/31566398
#SPJ2
What type of product is formed when acids are added to some ionic compounds
Answer:
salt
Explanation:
When acid and base solutions react, they produce water and a neutral ionic compound called a salt.
What does a base release when it is placed in water?
Select one:
a.Chloride ion (Cl-)
b.Hydronium ion (H3O+)
c.Calcium ion (Ca2+)
d.Hydroxide ion (OH-)
Answer:
D - Hydroxide Ion (OH-)
Explanation:
A base provides either hydroxide ions (OH–) or other negatively charged ions that combine with hydrogen ions, reducing their concentration in the solution and thereby raising the pH. In cases where the base releases hydroxide ions, these ions bind to free hydrogen ions, generating new water molecules.
what is the chemical reaction for respiration
Respiration is the chemical process by which organic compounds release energy. The compounds change into different ones by exergonic reactions. The hydrolysis of adenosine triphosphate (ATP) to adenosine diphosphate (ADP) and phosphoric acid (Pi) releases energy (it is an exergonic reaction).
All you need to know about CO2?
Answer:
Carbon is an element that's found all over the world and in every living thing. Oxygen is another element that's in the air we breathe. When carbon and oxygen bond together, they form a colorless, odorless gas called carbon dioxide, which is a heat-trapping greenhouse gas. Whenever we burn fossil fuels such as coal, oil, and natural gas—whether it's to drive our cars, use electricity, or make products—we are producing carbon dioxide.
The atmosphere isn't the only part of the Earth that has carbon. The oceans store large amounts of carbon, and so do plants, soil, and deposits of coal, oil, and natural gas deep underground. Carbon naturally moves from one part of the Earth to another through the carbon cycle. But right now, by burning fossil fuels, people are adding carbon to the atmosphere (in the form of carbon dioxide) faster than natural processes can remove it. That's why the amount of carbon dioxide in the atmosphere is increasing, which is causing global climate change.
Explanation:
What type of friction acts on a person who is sledding down a hill? Neglect air resistance. *
static
sliding
rolling
fluid
sliding
This is the answer
Does this platform really work?
Answer:
Yes, it does, it helps very much :))
Explanation:
What is the pH of a 0.0001 M aqueous solution of HCI?
Contains a nonmetal and metal
A) base
B) acid
C) covalent bond
D) salt
5. Make a graph: Plot your data on the graph to the right of the data table. Draw a line to conn points in order.
Answer:
i did c
Explanation:
Silicon can be made by heating a mixture of sand (silicon dioxide) with magnesium
powder.
The equation for this reaction is shown below.
SiO2 (s)+ 2Mg (s) → 2MgO (s) + Si (s)
Calculate the mass of silicon dioxide needed to make 1 g of silicon.
Relative atomic masses: O = 16; Si = 28
Mass = ?
Answer:
[tex] \frac{60}{28} = \frac{15}{7} [/tex]
If 1.00L of water is added to 3.00 L
of a 6.00M solution of HCl, what is the
new molarity of the acid solution?
Answer:
4.5M
Explanation:
Here is why:
Define the term metal ore
Answer:
Ore is a deposit in Earth's crust of one or more valuable minerals. The most valuable ore deposits contain metals crucial to industry and trade, like copper, gold, and iron
The naturally occurring material from which a mineral or minerals of economic value can be extracted.
The density of a gas was found to be 19.1 g/L at 2.25 atm and 19.3°C. What is the molar mass of
the gas?
Answer:
Explanation:
Recall that the density of a gas is its mass to volume ratio,
ρ
=
m
V
. Therefore, if we can determine the mass of some volume of a gas, we will get its density. The density of an unknown gas can used to determine its molar mass and thereby assist in its identification. The ideal gas law, PV = nRT, provides us with a means of deriving such a mathematical formula to relate the density of a gas to its volume
HELLLPPPPPP PLSSSSSSS!!!!
Please help as soon as possible
The molecules of which of the following would have the most kinetic energy?
A
boiling water
B
a cold glass of water
C
a warm cup of tea
D
an ice cube
Answer:
A
boiling water
Explanation:
The boiling point of water is 212 degrees F. Due to the temperature of the water being this high, the particles are sped up since heat increases kinectic energy.
What is the empirical formula for a compound that has 1.5 moles of copper and 0.5 moles of phosphorus?
Answer:
[tex]Cu_{3}P[/tex]
Explanation:
usually, the first step is to calculate the moles but since that is already given in the question we can move onto the next step
least molar ratio:
Cu = [tex]\frac{1.5}{0.5}[/tex] = 3
P = [tex]\frac{0.5}{0.5}[/tex] = 1
thus, empirical formula = [tex]Cu_{3}P[/tex]
The empirical formula for a compound that has 1.5 moles of copper and 0.5 moles of phosphorus is Cu₃P.
What is the empirical formula?Empirical formula of any compound gives idea about the number of constituents particles present in that compound by mentioning the ration.
In the question, given that:
Moles of copper = 1.5 moles
Moles of phophorous = 0.5 moles
Now we divide the given moles by the smallest number to get the ration number as follow:
Cu : P
1.5/0.5 : 0.5/0.5
3 : 1
Hence, required empirical formula is Cu₃P.
To know more about empirical formula, visit the below link:
https://brainly.com/question/1603500
relative mass of MgCl2
Full explanation
Mine answer is coming 59.7
Answer:
Ar(Mg)=24g
Ar(Cl)=35,5 and Cl2=35,5×2=71g
m=24g+71g=95g
The element cobalt displays many similarities to the element iron and is also attracted to magnets. Based on this information, is it likely that cobalt forms magnetic domains? Explain your answer.
In ferromagnetic materials, smaller groups of atoms band together into areas called domains, in which all the electrons have the same magnetic orientation. That's why you can magnetize them.
What is the meaning of magnetic domains?A portion of a ferromagnetic material where the magnetic moments are aligned with one another because of interactions between molecules or atoms.
In ferromagnetic materials, the atoms form structures called domains.
A domain is a region inside of a material where groups of magnetic moments naturally align in the same direction.
There can be numerous domains within an object.
Learn more about magnetic domains here:
https://brainly.com/question/22965158
#SPJ2
4. What is the volume of 6.5 moles of Helium at STP?
|
Answer:
Volume of 6.5 moles of Helium at STP is 145.6954 L
Explanation:
As we know
[tex]pV = nRT[/tex]
At STP, temperature is 273.15 K and pressure is 1 atm
n is the number of moles which is equal to 6.5
R is the gas constant = 0.08206 L atm/K mol
Substituting the given values in above equation, we get -
[tex]1 * V = 6.5 * 0.08206 * 273.15\\V = 145.6954[/tex]Liters
Volume of 6.5 moles of Helium at STP is 145.6954 L
HELP ME !!!!!!!
How much kinetic energy does an 8 Kg bowling ball have when it is thrown at 9 m/s down the alley?
A. 324 J
B. 36 J
C.705.6 J
D.324 energies
Answer:
A. 324 J
Explanation:
A balloon is placed in a vacuum chamber (a container that all of the air can be pumped out of) and as the air is removed, the balloon increases in size/volume. This is an example of which gas law?
Charles' Law
Boyle's Law
Gay-Lussacs Law
Grant's Law
Answer:
Boyle's Law
Explanation:
"Boyle's law, also referred to as the Boyle–Mariotte law, or Mariotte's law, is an experimental gas law that describes how the pressure of a gas tends to increase as the volume of the container decreases."
-Wikipedia
What is a covalent compound?
A.a compound with a metal and a nonmetal ion sharing valence electrons
B.stable group of multiple metal nuclei sharing valence electrons
C.a compound with nonmetal ions transferring valence electrons
D.a stable group of more than one type of atom bonded by bonding electron pairs
A covalent compound is a compound with a metal and a nonmetal ion sharing valence electrons (option A).
What is a covalent compound?A covalent compound is a molecule formed by covalent bonds, in which the atoms share one or more pairs of valence electrons.
Covalent bond is a type of chemical bond where two atoms are connected to each other by the sharing of two or more electrons.
Chemical compounds are generally grouped into one of two categories as follows;
covalent compounds ionic compoundsCovalent or molecular compounds generally result from two nonmetals reacting with each other. The elements form a compound by sharing electrons, resulting in an electrically neutral molecule.
Examples of covalent compounds are as follows:
watersucroseDNALearn more about covalent compounds at: https://brainly.com/question/11632372
#SPJ1
Which of the following is the term for the heaviness on something's surface that exerts a force over an area? a. force b. pressure c. sediment d. depositionn
The term for the heaviness on something's surface that exerts a force over an area is pressure. The correct option is b. pressure
Definition of PressureFrom the question, we are to determine the term for the heaviness on something's surface that exerts a force over an area.
Here, we are talking about pressure.
Pressure is defined as the physical force exerted on an object. Mathematically, it is defined as the perpendicular force per unit area.
That is,
[tex]P = \frac{Force}{Area}[/tex]
Where P is the pressure
The units of pressure are Newtons per square meter (N/m²), Pascals etc.
Hence, the term for the heaviness on something's surface that exerts a force over an area is pressure. The correct option is b. pressure
Learn more on Pressure here: https://brainly.com/question/16789304
PLEASE HELP
Four students are asked to describe a nebula and a star. Their responses
are shown in the table below. Which student described these two
celestial bodies correctly? *
Student
1
2.
Student Responses
Description of a Nebula
Description of a Star
A collection of hot gases that A sphere of dust and gases that contains
sometimes produces light from many elements and produces light from
nuclear reactions
fusion and fission reactions
A collection of hot gases that
results from stars that have
A collection of gases from several nebulae
exploded
hot enough to cause a nuclear reaction
A collection of dust and gases A sphele of matter with a density and a
that forms stars or results from temperature great enough to cause a
dying stars
nuclear reaction at its center
A collection of dust and gases A collection of hot gases that forms a
that is found near stars
sphere but produces no light
3
4
Student 1
Student 2
Student 3
Student A
Answer:student 3
Explanation:
What volume would a sample of gas occupy in LITERS at 0.985 atmospheres and a volume of 3.65 liters if the pressure were raised to 861.0 mmHg?
Answer:
3.18 L
Explanation:
Step 1: Given data
Initial pressure (P₁): 0.985 atmInitial volume (V₁): 3.65 LFinal pressure (P₂): 861.0 mmHgFinal volume (V₂): ?Step 2: Convert P₁ to mmHg
We will use the conversion factor 1 atm = 760 mmHg.
0.985 atm × 760 mmHg/1 atm = 749 mmHg
Step 3: Calculate the final volume of the gas
Assuming ideal behavior and constant temperature, we can calculate the final volume using Boyle's law.
P₁ × V₁ = P₂ × V₂
V₂ = P₁ × V₁/P₂
V₂ = 749 mmHg × 3.65 L/861.0 mmHg = 3.18 L
Difference between Displacement and Double Displacement reaction
Answer:
please follow me
Explanation:
A displacement reaction is the one when a more reactive substance displaces a less reactive one from its salt solution whereas a double displacement reaction is the one where a mutual exchange of ions happens between two compounds.
which deflects winds to the right or left
Answer:
right
Explanation:
the air that circulates to the right is deflected, because of the earths gravitational rotation, and how its tilted.
This question is about acids and bases.
Which ion is found in all acids?.
CI-
H
Nat
OH-
Answer:
OH- is the correct answer
mark me brainst answer
Answer:
h
Explanation:
The common ion in all acids is the hydrogen or hydronium ion
Haley has been having difficulty breathing. She is having difficulty with the gas exchange in the respiratory system. Which organ is being affected?
Answer:
Lungs.
Explanation:
This is because the lungs are respiratory organs in the body that are located at the either side of the thorax or chest. These are organs that are incharge of exchange of gases. The air is breathe in through the trachea i.e oxygen is inhaled and carbondioxide which is the waste product is exhaled. Gas exchange take place in the lungs.
The gills, Y, of a fish are usually near external openings that allow water
to flow in and out of them. They also usually have many folds, which
increases their surface area. Using the diagram and this information, how
have gills most likely allowed fish to adapt to living underwater?
A.
They allow the fish to easily take in dissolved oxygen
B.
They allow the fish to filter food from the water
C.
They allow the fish to filter carbon dioxide out of the water
D.
They allow the fish to sense predators