Who would most likely be required to work with sodium hydroxide?
a plumber
a gardener
a bricklayer
a mechanic
Need answer ASAP
Answers
Sodium hydroxide NaOH is proven to be an active agent for improving the mechanical properties of the bricks. Hence, bricklayer most likely need sodium hydroxide.
What is sodium hydroxide?Sodium hydroxide is an ionic compound formed by the metallic sodium and water. Sodium hydroxide has the chemical formula NaOH. It is a strong base and used as a reagent in many chemical synthesis which has to be carried in presence of a base.
Sodium hydroxide has an effect on the drying kinetics of bricks which are made with clay. Studies reported that the drying duration is linearly related with the concentration of NaOH.
Drying duration of bricks layers increases with increase in concentration of NaOH as well as the material porosity decreases. and hence the bricks will not show the visible cracks. Therefore, bricklayer need NaOH.
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Answer:
A) a plumber
Explanation:
Related Questions
Find the element. Plz help!
Answers
Answer:
Hydrogen.
Explanation:
We see in the nucleus that we have 1 proton and 1 neutron.
The number of protons in the nucleus determines which element it is.
Element with 1 proton is the 1st element on the Periodic Table, Hydrogen.
COMPREHENSION QUESTIONS
QUESTION 11: The more
move it. *
something has, the more
it takes to 1 point
force, mass
kinetic energy, force
mass, force
O mass, potential energy
Answers
If something is basically heavier, it is harder to move it and therefore requires more force to move
In your own words, describe how the energy of a pendulum is changed as it moves through one cycle of its motion. Pls help online school sucks
Answers
In a perfect world without air resistance, the top of the swing would have the most potential energy, but the least amount of kinetic energy. As the pendulum falls down, it gains more kinetic energy as it travels faster due to gravitational acceleration but loses more potential energy as it loses height. The total amount of energy in the system (the sum of kinetic and potential energy) stays the same.
The energy of a pendulum is changed from Kinetic to Potential Energy (and vice-versa) when it moves through one cycle of its motion.
What is Kinetic Energy ?The kinetic energy of an object is the energy that it possesses due to its motion and is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.
Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.
When we move the bob of the pendulum to start the movement you "charge" it with Potential Energy (Gravitational) by varying its position (height) in relation to the ground.
When we release the bob it moves towards the equilibrium position changing Potential into Kinetic Energy (through the movement with Velocity).
At the equilibrium point the bob doesn't stop but goes on up to the same height "re-charging" it with Potential Energy.
The sum of Kinetic (K) and Potential (U) Energy (called Mechanical Energy is always the same:
E = K + U = constant
Therefore, The energy of a pendulum is changed from Kinetic to Potential Energy (and vice-versa) when it moves through one cycle of its motion.
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5.00 C =? K
A.) 306 K
B.) 278 K
C.) 273 K
Answers
Which of the following is a question of morality?
1.beliberately reporting false data.
2.keeping a sloppy record of experimental observations.
3.conducting a drug experiment which will harm lab rats
4. accidentally reporting false data.
Answers
Answer:
3
Explanation:
conduct experiment on live animal is not human way so it's a question of morality...
If the molar mass of a hydrocarbon is 26.0 g/mol and it’s empirical formula is CH what is the molecular formula
Answers
empirical formula
is the simplest whole number ration that defines constituent atoms in a species. The
molecular formula
is always a multiple of the
empirical formula
.
What is meant by the statement "Atoms are electrically neutral"?
Answers
Answer:
They have the same number of electrons as protons.
Explanation:
Atoms are electrically neutral means that all the charges within the atom are balance to equal neutral. An atom has the same number of protons as it does electrons, therefore the charge is neutral.
An ion has a different number of electrons than protons, making the ion either positively or negatively charged.
Answer:
Hi! I am currently taking AP Chemistry, I'll try to help you out.
That quote basically just means that the atom as a whole is not positively or negatively charged. Atoms are made up of protons, neutrons, and electrons. Neutrons are neutrally charged. Protons are positively electrically charged. And electrons are negatively electrically charged. In atoms, if there is an even number of protons and electrons, they can cancel each other's charges out, which results in the atom as a whole being electrically neutral.
Hope this helps! Feel free to mark me Brainliest if you feel this helped. :)
What is the most likely reason that nonmetals are electrical insulators?
Since valence shells are mostly empty in nonmetal atoms, the atoms attract and hold any electrons they can in order to fill their valence shells.
Since valence shells in nonmetal atoms are almost full, the atoms attract electrons and hold them tightly to fill their valence shells.
Since all nonmetals have valence shells that are full, they hold electrons tightly to avoid changing.
Since all nonmetals have valence shells that are completely empty, they do not attract or release any electrons.
Answers
Answer:
Since valence shells are mostly empty in nonmetal atoms, the atoms attract and hold any electrons they can in order to fill their valence shells.
Answer:
a
Explanation:
What is the effect of constant stirring on the solubility of solids and liquids?
Answers
Stirring affects how quickly a solute dissolves in a solvent, but has no effect on how much solute will dissolve. The amount of solute that will dissolve is affected by temperature - more will dissolve at higher temperatures. This is called the solubility of the solute
Brainleist if correct
___________is part of the Milky Way Galaxy.
Answers
Answer:
Our Sun (a star) and all the planets around it are part of a galaxy known as the Milky Way Galaxy.
What is one example of reusing water?
taking shorter showers each day
watering the yard in the morning
watering flowers with dirty dishwater
turning off water in the sink while brushing teeth
Answers
Answer:
C-watering flowers with dirty dishwater
Explanation:
Is 200 meters greater than 2000 centimeters
Answers
Answer:
200 meters.
Explanation:
2000 centimeters is 20 meters
100 centimeters = 1 meter
2000 divided by 100 = 20
Explanation:
Yes, 200 meters is greater than 2000 centimetres . Because 2000 centimetres is only 20 meters . So, 200 meters is greater.If you like this answer then mark this answer as BRAINLIEST answer.
Thank you ☺️☺️
What is a bowl-shaped crater thought to
be caused by the collapse of an empty
magma chamber?
Answers
Answer:
pyroclastic flow. a superheated cloud of gas and volcanic ash that travels swiftly down a volcanic slope. What is a bowl-shaped crater thought to be caused by the collapse of an empty magma chamber? caldera.
Explanation:
can I gave brainliest
50 Points!! 25 Each Points Please Help ASAP!! View Attached Image!! Will Mark Brainliest If All Are Answered!!
Answers
Answer:
f
a
c
e
b
reactant
b
f
a
e
d
c
b
Explanation:
Formula for:
* Density: D = M/V?
* Mass: ?
* Volume?
(CHEMISTRY FORMULAS ONLY!!)
Answers
V=nRT/P
Which of the following is a result of intermolecular forces
Answers
Answer:
The three major types of intermolecular interactions are dipole–dipole interactions, London dispersion forces (these two are often referred to collectively as van der Waals forces), and hydrogen bonds
How did Mendeleev decide which elements should be placed in the same group of the periodic table?
Answers
Answer:
He grouped elements with similar chemical and physical properties.
Hope this helps
Which of the following is NOT part of the cell theory?
[a] all living things are made of one or more cells
[b] all cells come from existing cells
[c] cells are the basic units of structure and function in living things
[d] your brain is constantly making new cells
Answers
the answer is B) All cells come from existing cells
The point which is not a part of the cell theory is your brain is constantly making new cells.
What is cell theory?Cell theory is a scientific theory and in this theory following three basic points are mentioned:
Cells are the basic and fundamental unit of all living life.New cells are formed from the cells which are already present.All living organisms are composed of cells.So, your brain is constantly making new cells is not the part of cell theory.
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why must we include units with a measurement?
Answers
Answer:
Units are used to show if a certain calculation is on track.
Explanation:
For example, 5.1 inches is way shorter than 5.9 inches.
What is the smallest piece of an element?
O A. A speck
O B. A molecule
C. An atom
D. A crystal
Answers
Answer:
I think it's c (viewpoint)
..
Answer:
C. An atom
Explanation:
a about worker measure the mass of some sucrose as 0.947mg. covert that quality to grams and to kilograms
Answers
The answer in kilograms 0.000000947
the difference between a scientific theory and a scientific law?
Answers
A scientific law is the description of an observed phenomenon. The explanation of a phenomenon is called a scientific theory.
what did ruthorford discover that thomson did not understand
Answers
Answer: Atoms aren't entirely empty space
Explanation:
Rutherford did his scatter experiment to disprove Thomson's Plum Pudding Model. Rutherford shot helium nuclei at a sheet of gold and expected the particles to all go straight through to a sensor. The reason he expected this was because Thomson said that atoms are mostly made of empty space. Not all the particles went through the gold sheet, a lot of them actually reflected back to him. This meant that atoms aren't entirely empty space and something had to deflect the helium nuclei
How does increasing the mass affect the kinetic and potential energy of a pendulum?
Answers
Explanation:
Anytime matter is in motion it has kinetic energy. The faster an object moves, the more kinetic energy it has. The more mass an object has, the more kinetic energy it has.
Both the kinetic energy and potential energy are directly proportional to the mass of the object. Hence, increasing the mass will increase the kinetic and potential energy of the pendulum.
What is kinetic energy ?The kinetic energy of an object is generated by virtue of its motion. Whereas, the potential energy is generated by virtue of its position. hen the object is at rest, the energy is stored in it in the form of potential energy. When the object starts moving, its potential energy starts to converts to kinetic energy.
The kinetic energy of an object is related to its mass and velocity by the equation:
Ke = 1/2 mv²
Potential energy P = mgh
where, g is the acceleration due to gravity and h is the height of the object from the surface.
Hence, both potential energy and kinetic energy are directly proportional to the mass of the object. An increase in mass increase both form of energy of the object.
Therefore, the kinetic and potential energy of the pendulum increases with mass.
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Metallic bonds have what that are freely flowing in a sea
Answers
Answer:
tRUE
Explanation:
16 meters per hour to miles per sec
Answers
Answer:
2.76 (full answer) 2.7617e-6
Explanation:
help me i will chose brainiest
Answers
Answer:
Atomic # is 9
protons 9
neutrons: 10
electrons: 9
mass :18.n u
energy shells: 18
Is there a relationship between density of an object and whether it will float sink or water in water?
Answers
Answer:
yes there is...........
Plz help, have a quiz on this plz PLZ
Answers
Answer:
20.82
Explanation:
Water
Specific Heat (J/c "C)
4.184
How much heat is needed to change the temperature of 50.0 g of water to 20.0°C
Answers
Answer:
The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object. The direction of the force on the first object is opposite to the direction of the force on the second object. Forces always come in pairs - equal and opposite action-reaction force pairs.
Explanation:
The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object. The direction of the force on the first object is opposite to the direction of the force on the second object. Forces always come in pairs - equal and opposite action-reaction force pairs.
