Answer:
Explanation:
They all are except chlorine which has no charge.
chlorate is ClO3 -1
Chloride Cl-1
Chlorite is ClO2 - 1
All of them are minus one. If you mean which has a chloride ion with a charge of -1 that would be the chloride ion.
Answer:
Chloride
Explanation:
All Answers
Chloride
Valence electrons increase by one
How many energy levels it has
1-
Potassium and iodine
what is acceleration
Answer:
the rate of change in velocity per unit time is called acceleration
standard atmospheric pressure define
Answer:
The atmosphere exerts pressure of about 10 power 5 and Nm power-2 or 760 mm of HG at sea level is known as standard atmospheric pressure
Answer:
(atm) unit of measurement equal to air pressure at sea level, about 14.7 pounds per square inch. Also called standard atmospheric pressure. atmospheric pressure. Noun. force per unit area exerted by the mass of the atmosphere as gravity pulls it to Earth.
Why is carbon said to provide a “backbone” in many molecules?(1 point)
Carbon atoms can form chains and branches with each other, and other atoms can attach to these.
Carbon atoms have long narrow shapes, allowing many other atoms to attach to them.
Carbon atoms have full shells of electrons, allowing electrical signals to pass through them easily.
Carbon atoms have half-full shells of electrons, allowing electrical signals to pass through them easily.
Answer:
The carbon atom has unique properties that allow it to form covalent bonds to as many as four different atoms, making this versatile element ideal to serve as the basic structural component, or “backbone,” of the macromolecules.
Carbon is said to provide a “backbone” in many molecules because Carbon atoms can form chains and branches with each other, and other atoms can attach to these, therefor the correct answer is option A
What is a Chemical compound?The chemical compound is a combination of two or more either similar or dissimilar chemical elements, for example, H₂O is a chemical compound made up of two oxygen atoms and a single hydrogen atom.
As given in the problem carbon is said to provide a “backbone” in many molecules because Carbon atoms can form chains and branches with each other, and other atoms can attach to these.
The fact that carbon atoms may share electrons with one another to build lengthy chains with other carbon atoms accounts for the enormous variety of organic molecules. Catenation is a characteristic of carbon that makes it special. By transferring their valence electrons to neighboring carbon atoms, carbon atoms can create lengthy chains.
Thus, therefore the correct answer is option A
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4. A woman from Pasadena makes a trip to a nearby shopping mall that is located 40 miles from her home.
On the trip to the mall she averages 80 mi/hr but gets a speeding ticket upon her arrival. On the return
trip she averages just 40 mi/hr. What was her average speed for the entire trip?
Taking into account the definition of speed, you get that the average speed of the entire trip is 53.33 [tex]\frac{mi}{hr}[/tex] .
It is necessary to know that speed is a quantity that expresses the relationship between the space traveled by an object and the time used for it.
In other words, speed can be defined as the amount of space traveled per unit of time with which a body moves and can be calculated using the expression:
[tex]speed= \frac{distance traveled}{time}[/tex]
In this case, you know that the shipping mall is 40 miles from the woman's house and that she is going to the mall and back home. So it runs the 40 miles of distance twice. So the distance traveled is 80 miles.
On the other hand, you know that on the trip to the mall she averages 80 [tex]\frac{mi}{hr}[/tex]. Since the woman travels the first 40 miles at that speed, and taking into account the definition of speed, the time it takes to go to the shopping mall is calculated as:
[tex]80\frac{mi}{hr} = \frac{40 mi}{time}[/tex]
Solving:
time× 80 [tex]\frac{mi}{hr}[/tex]= 40 mi
[tex]time = \frac{40 mi}{80\frac{mi}{hr}}[/tex]
time=0.5 hr
Finally, you know that on the return trip she averages just 40 [tex]\frac{mi}{hr}[/tex]. Since the woman travels the second 40 miles at that speed, and taking into account the definition of speed, the time it takes to return to her home is calculated as:
[tex]40\frac{mi}{hr} = \frac{40 mi}{time}[/tex]
Solving:
time× 40 [tex]\frac{mi}{hr}[/tex]= 40 mi
[tex]time = \frac{40 mi}{40\frac{mi}{hr}}[/tex]
time=1 hr
Then, the total time of the trip, which consists of going to the shopping mall and returning home, is calculated as:
total time= 0.5 hr + 1 hr
total time= 1.5 hr
Finally, taking into account the definition of speed, average speed of the trip is calculated as:
[tex]speed= \frac{80 miles}{1.5 hr}[/tex]
Solving:
speed= 53.33 [tex]\frac{mi}{hr}[/tex]
In summary, the average speed of the entire trip is 53.33 [tex]\frac{mi}{hr}[/tex] .
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factor affecting for the depth which is exerted by the foot print of a bull and a man with same masses on a sand floor is,
1.The pressure exerted by the foot of bull is low
2.the pressure exerted by the foot of man is high
3.the area wich touches the sand foor human feet is less
4.the area wich touches the sand floor of 4 feet of the bull is less than the man.
please this is urgent....
The area which touches the sand floor of 4 feet of the bull is less than the man.
because the area of surface of contact is more in bull than in man. More is the area of contact, leads is the force or pressure affected.
electrons are tiny particles with very small negative charges when two electrons are place near each other the electric force pushes them apart what does this tell you about the mass of an electron
Answer:
Explanation:
like charges repel each other if one group of electrons has more mass it will push the other smaller mass of electrons away
driving home from school one day you saw a ball rolling down into the street you brake for 1.10s slowing your 950 kg 16.0m/s to 9.50 m/s
a ) v = v o + a t ( the acceleration will be negative )
9.50 = 16.0 + a * 1.2
a * 1.2 = -16.0 + 9.50
a * 1.2 = - 6.5
a = - 6.5 : 1.2
a = - 5.4167 m/s²
F = m * a = 950 kg * 5.4167 m/s²
F = 5,145.8 N ( the average force exerted on a car during braking )
b ) d = v o - a t² / 2
d = 16.0 * 1.2 - ( 5.4167 * 1.2² / 2 ) =
= 19.20 - 3.90 = 15.30 m
A bracelet's mass is 80 g, and its volume is 10 cm3. What is its density?
Answer:
Density is 8 g/cm³
Explanation:
[tex]density = \frac{mass}{volume} \\ [/tex]
mass » 80 g
volume » 10 cm³
[tex]density = \frac{80 \: g}{10 \: {cm}^{3} } \\ \\ = 8 \: {gcm}^{ - 3} [/tex]
Answer:
mass=80
volume=10
density=mass/volume
which is 80/10
so the density is equals to 10.
a hot metal block is placed into 50g of water in an insulated container the water increases in temperature from 20c to 32c the specific heat capacity of water is 4200j/kgk calculate the quantity of heat energy supplied to the water from the metal
Answer:…..
Explanation:
The quantity of heat energy supplied to the water from the metal is 2520 J.
What is meant by specific heat capacity ?The quantity of heat energy needed to increase the temperature of one kilogram of a substance by one degree Celsius is known as the substance's specific heat capacity.
Here,
Mass of the water in the container, m = 50 g = 0.05 kg
Initial temperature of the water, T₁ = 20°C = 293 K
Final temperature of the water, T₂ = 32°C = 305°C
Specific heat capacity of water, C = 4200 J/kgK
The expression for the quantity of heat energy supplied to the water from the metal is given by,
Q = mcΔT
Q = mC(T₂ - T₁)
Applying the values of m, C, T₁ and T₂
Q = 0.05 x 4200 (305 - 293)
Q = 210 x 12
Q = 2520 J
Hence,
The quantity of heat energy supplied to the water from the metal is 2520 J.
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how to convert m/s to miles/seconds
Answer:
Divide by 1609
Explanation:
So to convert from m/s to m/s divide by 1609
On January 22, 1943, the temperature in Spearfish, South Dakota, rose from −4°F to 45°F in just 2 minutes. What was the temperature change in Celsius degrees?
27.2 C°
40.1 C°
35.4 C°
18.7 C°
10. Numerical problems:
b. A stone is thrown vertically upwards with an initial velocity of 20 m/sec.find the maximum height it reaches and the time taken by it to reach the height. (g = 10 m/s2).
c. A car is moving at a rate of 72 km/hr. How far does the car move when it stops after 4 seconds?
d. A bus starts from rest. If the acceleration is 2 m/s2, find
1. the distance travelled.
2. the velocity after 2 seconds.
e. A stone is thrown vertically upward with the velocity of 25 m/s. How longo it take to reach the maximum height? Also calculate the height.
with process please
Answer:
a)20 m,2s
Explanation:
Given
Initial velocity=20 m /sec
g=10 m/s square
v =0m/s
h =?
t =?
now,
v = U +gt
=v=20 +10t
Or,10t=20
Or,t=20
10
therfore ,2 s.
Again,
h=ut -1 gt square
2
Or, h=20×2-1×10(2)square (multiply and cut )2×5 =10
; 2
Or,40-5×4
therefore , 20m
i need help asap!!!!!!
Answer:
d
Explanation:
it should divide the weight by 4 because there is 2 pivots
Convert 25 cm to km using the method of dimensional analysis
Answer:
0.00025km
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how many moles are there in 18 grams of water
Answer:
1 Mole
Explanation:
The molecular weight of H2O is 18grams/mole. The conversion from grams to moles looks something like this:
18grams H2O (1moleH2O/18grams H2O) = 1 mole
Which object will have greater acceleration? Why?
Answer:
Object D
Explanation:
Use Newton's Second Law to determine the acceleration that each object has.
F = maThe force applied in both cases is 50 N, but the mass for object C and object D is different.
Let's start with object C first:
F = ma 50 N = 10 kg · a 50 = 10a 5 = aThe acceleration object C undergoes is 5 m/s².
Now let's calculate object D next:
F = ma 50 N = 2 kg * a 50 = 2a25 = aThe acceleration object D undergoes is 25 m/s².
Object D has greater acceleration because it has a smaller mass. The object with a smaller mass will accelerate more in order to satisfy Newton's 2nd Law.
Which option is a negatively charged ion?
chlorite
chloride
chlorate
chlorine
We have that Chloride is is a negatively charged ion
Giving the the correct option as
Option B
From the Question we are Given
Chlorite
This is a form sheet silicate minerals that grown in nature
Chloride
This is is a negatively charged ion
Chlorate
This is a positively charge ion
Chlorine
This is an element that has an atomic number of 17
Therefore
Chloride is is a negatively charged ion
Giving the the correct option as
Option B
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Based on the ionic notation shown here, what has happened to this ion. ***List all that apply!!!*** Fe2+ *
Atom has become an anion.
Atom has become a cation.
Atom has lost 2 electrons.
Atom has gained 2 electrons.
Answer:
atom has become cation
atom has lost 2 electrons
Explanation:
when atom loses electron they become positively charged and cation are positive ion
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A student puts a beaker of warm water next to a beaker of cold water so that they touch. Which TWO statements are true?
A student puts a beaker of warm water next to a beaker of cold water so that they touch it. the two statements that are true are the thermal energy will move from warm water to cold water and the thermal energy will move from air to cold water, therefore option B and option D are the correct statements about the given problem statement.
What is the boiling point?It is a temperature at which the pressure exerted by the external atmosphere is equal to the vapor pressure of the substance.
The boiling point depends on atmospheric pressure, temperature, bond strength, and vapor pressure of the liquid.
As the water is boiling it means it has more thermal energy contained in it than the surrounding air and the ice is present at zero degrees.
As we know that heat is always transferred from the higher thermal potential to the lower thermal potential. The warm water has a higher thermal potential; than the cold water and the surrounding air has a higher thermal potential than the cold water.
As per the given problem statement, a student puts a beaker of warm water next to a beaker of cold water so that they touch it. the two statements that are true are the thermal energy will move from warm water to cold water and the thermal energy will move from air to cold water, therefore option B and option D are the correct statements about the given problem statement.
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How do particles differ after a physical change
Answer:
In physical changes, no new materials are formed and the particles do not change apart from gaining or losing energy. ... Particles stay the same unless there is a chemical change whether the matter is solid, liquid or gas. Only their arrangement, energy and movement change.
Explanation:
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Answer:
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An object of mass 2kg is thrown vertically downwards with an initial kinetic energy of 100J. What is the distance fallen by the object at the instant when its kinetic energy has doubled
The distance fallen by the object at the instant when its kinetic energy has doubled is 5.097m
The kinetic energy of an object is the energy possessed by the body by virtue of its motion.
The gravitational potential energy (energy due to the virtue of its position) of a body is being converted to Kinetic energy once an object falls.
Using the law of conservation of energy according to the equation:
Kinectic Energy = Potential Energy
Since PE = mgh
KE = PE = mgh
Given the following parameters
KE = 100J
m = 2kg
g = 9.81m/s²
Required
Height h
Substitute the required values into the formula
100 = 2(9.81)h
h = 100/19.62
h = 5.097m
Hence the distance fallen by the object at the instant when its kinetic energy has doubled is 5.097m
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HELP ME 20 POINTS!!!Assume that the average volume of an adult human body is one-tenth
cubic meter (0.10 m) and that there are two billion (2.0 x 109)
adults in the world.
a. What would be the total volume of all the adults in the world?
b. Compute the length of one edge of a cubic container that has a
volume equal to the volume of all the adults in the world.
a). (2.0 x 10^9) x (0.1) = 2.0 x 10^8 cubic meters
b). The edge of a cube with that volume is
(2.0 x 10^8) ^ 1/3 = about 585 metres
(about 0.36 of a mile)
==> I'm pretty sure there are actually more than 2 billion adults in the world, since the total population is well over 7 billion now.
For which length of wire are the readings of resistance the most precise
What is pascal law? Define it
Answer:
Pascal's law states that the pressure exerted anywhere in a confined incompressible liquid is transmitted equally in all directions irrespective of the area on which it acts and it always acts at right angles to the surface of containing vessel.
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what is the difference between industrialized countries and developing countries
Answer: Developed nations are generally categorized as countries that are more industrialized and have higher per capita income levels. ... Developing nations are generally categorized as countries that are less industrialized and have lower per capita income levels.
Explanation: this is the source that i used to find the answer:
https://study.com/academy/lesson/economic-inequality-differences-in-developed-and-developing-nations.html
s dispersion dispersion
, refraction
Answer:
If you want definition, here it is:
Dispersion is defined to be the spreading of white light into its full spectrum of wavelengths. Refraction is responsible for dispersion in rainbows and many other situations. The angle of refraction depends on the index of refraction, as we saw in The Law of Refraction.
A motorcycle is moving with the velocity of 72km/h. If the velocity reaches 40m/s after 0.5m calculate the acceleration
Answer:
1200m/s
Explanation:
initial velocity=72km/h=20m/s
Final velocity=40m/s
Distance=0.5m
Now,
2as=v^2-u^2
or,2*a*0.5=40^2-20^2
or,1a=1200
or,a=1200/1
therefore,acceleration=1200m/s
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a block occupies 0.2587 ft. what is the volume in mm?
Answer:
70
Explanation:
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(There is both physics and chemistry question )
1) Write the molecular formula of the following by crisscross method :
1. Potassium sulphate
2. Sodium chloride
3. Ammonium chloride
4. Silver oxide
2) Prove that F=ma pl
Potassium Sulphate :-
[tex]\setlength{\unitlength}{1cm}\begin{picture}(0,0)\thicklines\put(0,3){\bf K}\put(0,0){\bf 1}\put(4,3){\sf SO_4}\put(4,0){\bf -2}\put(0.2,2.9){\vector(4,-3){3.5}}\put(3.8,2.9){\vector(-4,-3){3.5}}\end{picture}[/tex]
[tex]\boxed{\sf K_2SO_4}[/tex]
Sodium chloride:-
[tex]\setlength{\unitlength}{1cm}\begin{picture}(0,0)\thicklines\put(0,3){\bf Na}\put(0,0){\bf 1}\put(4,3){\sf Cl}\put(4,0){\bf -1}\put(0.2,2.9){\vector(4,-3){3.5}}\put(3.8,2.9){\vector(-4,-3){3.5}}\end{picture}[/tex]
[tex]\boxed{\sf NaCl}[/tex]
Ammonium Chloride
[tex]\setlength{\unitlength}{1cm}\begin{picture}(0,0)\thicklines\put(0,3){\bf NH_4}\put(0,0){\bf 1}\put(4,3){\sf Cl}\put(4,0){\bf -1}\put(0.2,2.9){\vector(4,-3){3.5}}\put(3.8,2.9){\vector(-4,-3){3.5}}\end{picture}[/tex]
[tex]\boxed{\sf NH_4Cl}[/tex]
Silver Oxide
[tex]\setlength{\unitlength}{1cm}\begin{picture}(0,0)\thicklines\put(0,3){\bf Ag}\put(0,0){\bf 1}\put(4,3){\sf O}\put(4,0){\bf -2}\put(0.2,2.9){\vector(4,-3){3.5}}\put(3.8,2.9){\vector(-4,-3){3.5}}\end{picture}[/tex]
[tex]\boxed{\sf Ag_2O}[/tex]