Answer:
The pH indicates how acidic or basic a solution is.
Explanation:
i just took the test and got it right.
pH of a solution is the measure of how acidic or basic the solution is. It is determined based on the H+ ion concentration in the solution. Hence, option C is correct.
What is pH?pH of a solution is the measure of the H+ ion concentration in a solution. It determines the acidity or basicity of the solution. Mathematically it is the negative logarithm of H+ ions concentration.
pH = - log [H+]
A pH scale can be used to determine the acidity or basicity of a solution. If the basicity is 7, then the solution is neutral. If the pH is less than 7 then the solution is acidic and a pH above 7 is basic solution.
Red- green color in pH scale represent the acidic solution where green is neutral and cyan to dark blue color is given by bases. Using a litmus paper the acidity can be checked based on these color change.
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which diagram would it be?
Answer:
2CH4 ------> 3H2 + C2H2
Explanation:
The law of conservation of mass states that atoms can neither be created nor destroyed in a chemical reaction.
The implication of this law is that the number of atoms of each element on the reactant side must be equal to the number of atoms of each element on the product side.
This law is only obeyed by the reaction, 2CH4 ------> 3H2 + C2H2
There were eight atoms of H on the left hand side as well as the right and side of the reaction equation. There were two atoms of C on both the left and right hand sides of the reaction equation respectively. Hence, the law was obeyed here.
i really need help on this one!!
Suppose Earth’s gravitational force were decreased by half. How would this change affect a game of basketball? Think about the motion of the players and the ball.
Answer:
Due to the decrease in the gravitational force, it will take longer time for ball to reach the ground while dribbling. Moreover, the hang time of players will also be longer. This means that the players will stay on air longer and will be able to jump higher.
How many liters of water is necessary to make a 1.14 M solution with 5.10 mol KNO3?
i am a silvery white metal used to make salt
Which of an atom's electrons are involved in chemical reactions?
ANSWER: D
A. The electrons that make one isotope different from another
B. The electrons closest to the nucleus of the atom
C. The electrons that determine the atomic number of the atom
D. The electrons farthest from the nucleus of the atom
it’s C
i hope i help you but if not DO NOT FORGET STAY SAFE AT HOME
Answer:
D.
Explanation:
The electrons farthest from the nucleus of the atom
Which type of mass movement is the most destructive?
creep
erosion
landslide
slump
Answer:
•landslide
Explanation:
Landslides are exceptionally destructive. Homes may be destroyed as hillsides collapse. Landslides can even bury entire villages. Landslides may create lakes when the rocky material dams a stream.
The type of mass movement is the most destructive landslide.
What is landslide?Several forms of mass wasting that may include a wide range of ground movements, such as shallow or deep-seated slope failures, rockfalls, mudflows, and debris flows are known as landslips or landslide.
Sometimes more than one type of movement occurs within a single landslide, and analysis of each requires detailed interpretation of landforms and geological sections.
Landslides are exceptionally destructive. Homes may be destroyed as hillsides collapse. Landslides can even bury entire villages. Landslides may create lakes when the rocky material dams a stream.
There are measures that can be taken to reduce the potential for a landslide to occur, such as steep slope reinforcement, installing structures using pile foundations and checking surface drainage. The easiest way to prevent a landslide is to avoid building in areas that are – or might become – prone to landslides.
Given options are-
creep
erosion
landslide
slump
Therefore, The type of mass movement is the most destructive landslide.
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Explain how the temperature of a substance is related to the kinetic of it molecules.
Answer: this is the explanation
Explanation:
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
9. A container has 56 g of Sc and 95 g of Br 2 in it. If the reaction goes to completion, what is the maximum amount of ScBr3 which could be produced?
Answer:
c
Explanation:
in cubic
A box that is 35 inches X 35 centimeters X 0.065 yards will have a volume of
centimeters.
Answer:
V = 18,493.5114 cm³
Explanation:
Dimensions are;
L = 35 inches
W = 35 cm
H = 0.065 yards
Now, volume is given by;
V = LWH
But our dimensions need to all be in the same unit, so let's convert to cm.
L = 35 inches = 35 × 2.54 cm = 88.9 cm
H = 0.065 yards = 0.065 × 91.44 = 5.9436 cm
Thus;
V = 88.9 × 35 × 5.9436
V = 18,493.5114 cm³
which organs are part of the respiratory system
plsssss help with this ill give brainliest to first answer
How does the concept of conservation of mass apply to chemical reactions?
Answer:
The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.
Water is not an element because it:
Answer:
because is made of more than on type of atom
Please help me I hate chemistry
disolvin rate is The rate at which a solute dissovles depends upon the size of the solute particles. Dissolving is a surface phenomenon since it depends on solvent molecules colliding with the outer surface of the solute.
saturation the degree or extent to which something is dissolved or absorbed compared with the maximum possible, usually expressed as a percentage.
changes in solubility For many solids dissolved in liquid water, the solubility increases with temperature. The increase in kinetic energy that comes with higher temperatures allows the solvent molecules to more effectively break apart the solute molecules that are held together by intermolecular attractions.
The concentration of a solution is a measure of the amount of solute that has been dissolved in a given amount of solvent or solution. A concentrated solution is one that has a relatively large amount of dissolved solute. A dilute solution is one that has a relatively small amount of dissolved solute.
dilution is the making something weaker in force, content, or value.
Colligative properties of solutions are properties that depend upon the concentration of solute molecules or ions, but not upon the identity of the solute. Colligative properties include vapor pressure lowering, boiling point elevation, freezing point depression, and osmotic pressure.
what geologic structures are associated with earthquakes
Answer:
Seismic waves are produced when suddenly released some sort of energy stored in Earth's crust, usually when suddenly fracture and "slip" masses of rock straining against each other. Earthquakes occur most frequently along geological faults, narrow zones where rock masses shift in relation to each other.
Explanation:
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Which three elements are combined in lithium sulfate ?
Answer:
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The empirical formula of a compound is determined to be N2O5. If the molar mass of the compound is 108 g/mol, determine the molecular formula of the compound.
Answer:
N2O5
Explanation:
Empirical formular is the simplest formular of a compound and shows the atoms present in simple rations.
Molecular formular on the other hand shows the exact number of atoms of element present in a compound.
To obtain molecular formular from empirical formular;
(Empirical formular)n = Molar mass
where n is a simple integer.
(N2O5)n = 108 g/mol
Molar mass of N2O5 = 108 g/mol
(108) n = 108
n = 108 / 108 = 1
Molecular formular = (Empirical formular)n
Molecular formular = (N2O5)*1 = N2O5
In this question, the empirical formular is the same as the molecular formular
____ power is generated from the heat released when uranium atoms split in a process known as fission.
0.65743 In scientific notation
10
If velocity is positive, which would most likely yield a negative acceleration?
O O OO
A final velocity that is faster than an initial velocity.
A time that is less than a half hour.
An initial velocity that is faster than a final velocity.
A time that is greater than a half hour.
Answer:
An initial velocity that is faster than a final velocity
Explanation:
The relationship between velocity and acceleration is given as follow;
Acceleration = Change in velocity / Time
Change in Velocity = Final Velocity - Initial Velocity
From the formular, time is not able to affect the sign of the acceleration.
A negative acceleration is also referred to as deceleration and this occurs when there is a drop in velocity.
A drop in velocity occurs when the initial velocity is faster than the final velocity.
What group on the periodic table is more reactive 5 or 6 and why?
Answer:
heheeheheh
Explanation:
Why would it be harder to jump on the planet Jupiter than on Earth?
HELP PLSSS
How does the rock cycle work help use a easy understanding small summary
Answer: this is how it works
Explanation:
The magma bursts through Earth's surface in the form of a volcano. Heat and pressure deep in the Earth makes some rocks change to metamorphic rock. Layers of rock get squashed and packed together and gradually harden to form sedimentary rock. The igneous rock gets broken down by weather, and the cycle begins again.
I really am bad at chemistry
Answer:
A, 4,3,3,4
B, 3,2,2,3
C, 2,6,2,3
D, 1,2,1, 1
An ionic bond always forms between _____ ion with a positive charge and _____ ion with a negative charge.
Answer:
Cation and anion
Explanation:
Positive ion is known as cation and negative ion is known as anion
Arrange the following atoms in order of increasing size (radius).
Te, S, Se
K, Br, Ni
Ba, Si, F
Answer:
S<Se<Te
Br<Ni<K
F<Si<Ba
Explanation:
if you had a block square that weighed 5.00 grams what would be the length of each side
Answer:
[tex]l = 0.793[/tex] cm
Explanation:
Let us assume the density of block square [tex]10[/tex] g/cm³
As we know
Volume = [tex]\frac{Mass}{Density}[/tex]
Thus Volume of this block is equal to [tex]\frac{5}{10} = 0.5[/tex]
As we know volume of square block of side of length "l" is equal to [tex]l^3[/tex]
[tex]l^3 = 0.5[/tex]
[tex]l = 0.793[/tex] cm
_____ are bits and pieces of material that end up in a body of water.
Answer:
sediments
Explanation:
True or false for these!!!! Please help
What kind of information does this map show?
A. The roads that connect different cities
OB. The shapes of different landforms
O C. The elevation of Earth's surface features
D. The natural resources found in different areas
If you add more molecules but do not change the temperature or the pressure, what will happen to the system?
the molecules will move faster
O the volume will decrease
the volume will increase
the molecules will move slower
Answer:
the volume will increase
Explanation:
The kinetic energy of gas molecules depend upon the temperature . If temperature is increased , the molecules will move faster . When temperature is decreased , they move slower .
Hence when more molecules are added to a gas without changing its temperature , the velocity of gas molecules will remain unchanged .
Since pressure is also constant , it is volume which will be increased .
It can be explained from universal gas formula as follows
PV = nRT
P , R and T is constant ,
V ∝ n
Volume is proportional to n which depends upon number of molecules .
So volume will increase if number of molecules increases .