Answer:
a)5.14 * 10^24 molecules H2O
Explanation:
8.54 moles of H2O contains 8.54 x 6.022 x 10^23 = 5.14 x 10^24 molecules of H2O.
Two bar magnets are hung from metal rods and held in the position shown below. A rectangular box with 2 black lines running straight down from it, each to a horizontal bar magnet labeled N to the left and S to the right. There is a gap between the magnets. The magnets are released and swing freely. Which diagram best predicts their final position? A rectangular box with 2 black lines running down from it, each to a horizontal bar magnet labeled N to the left and S to the right. There is a gap between the magnets. The magnets are both hanging to the left. A rectangular box with 2 black lines running down from it, each to a horizontal bar magnet labeled N to the left and S to the right. There is a gap between the magnets. The left magnet hangs to the left. The right magnet hangs to the right. A rectangular box with 2 black lines running down from it, each to a horizontal bar magnet labeled N to the left and S to the right. There is a gap between the magnets. The left magnet hangs to the right. The right magnet hangs to the left. A rectangular box with 2 black lines running down from it, each to a horizontal bar magnet labeled N to the left and S to the right. There is a gap between the magnets. The left magnet hangs straight down. The right magnet hangs to the right.
Answer:
IT IS C
Explanation:
I TOOK THE TEST ON EDGE PEEPS
Answer:
C
Explanation:
Two bar magnets are hung from metal rods and held in the position shown below.
A rectangular box with 2 black lines running straight down from it, each to a horizontal bar magnet labeled N to the left and S to the right. There is a gap between the magnets.
The magnets are released and swing freely. Which diagram best predicts their final position?
A rectangular box with 2 black lines running down from it, each to a horizontal bar magnet labeled N to the left and S to the right. There is a gap between the magnets. The magnets are both hanging to the left.
A rectangular box with 2 black lines running down from it, each to a horizontal bar magnet labeled N to the left and S to the right. There is a gap between the magnets. The left magnet hangs to the left. The right magnet hangs to the right.
A rectangular box with 2 black lines running down from it, each to a horizontal bar magnet labeled N to the left and S to the right. There is a gap between the magnets. The left magnet hangs to the right. The right magnet hangs to the left.
A rectangular box with 2 black lines running down from it, each to a horizontal bar magnet labeled N to the left and S to the right. There is a gap between the magnets. The left magnet hangs straight down. The right magnet hangs to the right.
Why do scientists often use bacteria to produce medicines?
Answer:
Bbbbb eg2020
Explanation:
Bbbbb
This equation represents an unbalanced chemical reaction:
Nal + Cl2 → NaCl + 12
When the equation is balanced, which coefficient should be placed before NaCl?
Answer:
C=2
Explanation:
It would end as 2 NaI+1Cl2=2NaCl +1I2
What type of chemical reaction is: CH4 + 202® CO2 + 2 H2O
Answer:
Incomplete combustion - carbon monoxide and water.
Explanation:
what causes magic milk
Answer:
don't know exactly but surely have helped u
Answer:
The fat and proteins are super sensitive to changes in the milk and so when the dishwashing liquid is added a chemical reaction occurs. The soap and fat work hard to join together, which causes the movement. When food colouring is added we are able to witness this chemical reaction occurring.
Explanation:
Explain the solute and the solvent in a solution
Answer:
a solute is a substance that is dissolved in the solvent (liquid)
a solvent is a substance that dissolves a solute (solid)
a solution is the mixture of both the solute and solvent forming uniform mixture
Calculate the amounts of each substance in the reaction below if an initial amount of 0.400 moles are brought together with an initial amount of 2.29 moles of Cl2 in a 1.00 L vessel
Complete Question
Calculate the equilibrium amounts of each substance in the reaction below if an initial amount of 0.400 moles of CO are brought together with an initial amount of 2.20 moles of Cl2 in a 1.00 L vessel and then equilibrium is established at 900 K. Kc at this temperature = 0.800. COCl2(g) CO(g) + Cl2(g)
Answer:
The amount of each substance at equilibrium is
[tex][COCl_2 ] = 0.282 \ M[/tex]
[tex][CO] = 0.12 \ M[/tex]
[tex][Cl_2] = 2.008 \ M[/tex]
Explanation:
From the question we are told that
The initial amount of CO is [tex]n_1 = 0.400[/tex]
The initial amount of [tex]Cl_2[/tex] is [tex]n_2 = 2.20 \ moles[/tex]
The volume of the vessel is [tex]V = 1.0 \ L[/tex]
The temperature is [tex]T = 900 \ K[/tex]
The equilibrium constant at the given temperature is [tex]K_c = 0.800[/tex]
The reaction is
[tex]COCl_2 \underset{}{\stackrel{}{\rightleftharpoons}} CO + Cl_2[/tex]
Now Generating an I C E table
[tex]COCl_2 \ \ \ \ \underset{}{\stackrel{}{\rightleftharpoons}} \ \ \ \ \ \ \ \ \ CO \ \ \ \ \ \ \ \ \ \ + \ \ \ \ Cl_2[/tex]
Initial [I] 0 0.400 2.20
Change [C ] + x -x - x
Equilibrium [E ] x 0.400- x 2.20 - x
Here x is the amount in terms of concentration by which [tex]COCl_2[/tex] and [tex]CO[/tex] and [tex]Cl_2[/tex] decreased during the reaction
Generally the equilibrium constant is mathematically represented as
[tex]K_c = \frac{[CO] [Cl_2]}{[COCl_2]}[/tex]
=> [tex]0.800 = \frac{[0.400 - x] [2.20 - x ]}{[x]}[/tex]
=> [tex]0.800 x = [0.400 - x ] * [ 2.20 - x ][/tex]
=> [tex]x = 0.282 \ M[/tex]
Generally at equilibrium the amount of [tex]COCl_2[/tex] present is
[tex][COCl_2 ] = 0.282 \ M[/tex]
Generally the equilibrium the amount of [tex]CO[/tex] present is
[tex][CO] = 0.400 - 0.282[/tex]
=> [tex][CO] = 0.12 \ M[/tex]
Generally the equilibrium the amount of [tex]Cl_2[/tex] present is
[tex][Cl_2 ] = 2.29 - 0.282[/tex]
=> [tex][Cl_2] = 2.008 \ M[/tex]
why same amount of food in large bowl gets cooler than that of food in smaller bowl?
Reasoning 1: On a general base, you have more surface area exposed so more air molecules (if you're not having a meal in outer space) come in contact with the food, absorbing heat energy, cooling it down.
Ok, so this is only one reason if your food is dehydrated 'to the core'.
Reasoning 1 + 2: Most foodstuff contain moisture. This moisture evaporates on absorbing heat energy from surroundings. This causes a temperature decrease of the food surface.
Looking upon the basic factors that alter evaporation rate, more surface area exposure causes a faster evaporation rate, hence, faster cooling rate.
How do jet streams affect temperature and precipitation?
a. affect temperature, but not precipitation
b. pull cold air from the equator; storms tend to form along the jet stream
c. pull cold air from the poles; storms tend to form along the jet stream
d. do not affect temperature or precipitation
What would be the effect of removing NH3 from this reaction? 3H2 + N2 2NH3 A. Hz and N2 would react to produce more NH3. B. The remaining NH3 would react more to produce more H2 and Nz. O C. The reactions in both directions would slow down. D. The reactions in both directions would speed up.
A. H₂ and N₂ would react produce more NH₃
Further explanationGiven
Reaction
3H₂ + N₂ ⇔ 2NH₃
Required
The effect of removing NH₃
Solution
If the concentration of one component is enlarged, the system reaction is to reduce the component, and vice versa, if the concentration of one component is reduced, the reaction system is to add to the component
When NH₃ is taken from the system, then
The system will react by increasing the concentration of products by moving to the right ⇒ Shift in the direction of the product
Answer:
A. Hz and N2 would react to produce more NH3.
Explanation:
If C6H6 was the molecular formula, what is the empirical formula?
Answer:
so the empirical formula for benzene is also CH.
Explanation:
A 182 pound male body was found decomposing in a dense wooded area 1.43 kilometers away from the nearest road. How many meters would a suspect have to drag the body into the woods if the victim was already deceased and transferred to this secondary location from the vehicle
Answer:
1430 meters
Explanation:
Which of the following is an example of heat being transferred from one object to another without direct contact?
A.
Caleb burned himself by taking a shower in water that was too hot.
B.
Caleb burned himself by spilling a hot drink on his hand.
C.
Caleb burned himself by holding his hand too close to a fire for too long.
D.
Caleb burned himself by touching the end of a poker that was sitting in a fire.
Which statement best describes how people within a country may be different? O People know that each region has the same traditions and culture. O People from different regions have different cultures, values and languages. O People believe that people from each region are equal to one another. O People think that mountainous regions are more important than others.
Answer:
its B People from different regions have different cultures, values and languages.
Explanation:
i just took the assignment
Under careful and controlled supervision, Ashley is slowly adding 1 mL of a strong acid at a time to 30 mL of a strong base to measure the effect it had on the pH. What is the testing (independent) and outcome (dependent) variable of this experiment? What would a good control be?
Answer:
The independent variable is the volume of the strong acid added to the strong base
The dependent variable is the effect of the combination of the acid and base on the pH
Explanation:
The given parameters are;
The rate at which Ashley is adding the strong acid to the strong base = 1 mL per each time
The volume of the strong base to which Ashley is adding the acid = 30 mL
Therefore;
The testing, or independent variable of the experiment = The number of 1 mL volume of the strong acid Ashley adds to the strong base
The outcome, or dependent variable of the experiment = The measured (change) effect on the pH.
Complete the dot and cross diagram, in Figure 2, for tetrachloromethane, CCl4
GIVE REASON:-
Ammeter is connected in series and voltmeter is connected in parallel to the electric load in an electric circuit .
Answer:
An ammeter is a device that is used to measures the amount of current flowing in a circuit and a voltmeter measure electric potential difference in an electric circuit between two points.
An Ammeter is connected in series because of its low resistance capacity and it will be connected in parallel it can get damaged due to high current. A voltmeter is connected in parallel in an electric circuit because the potential difference remains the same when connected in parallel.
Please help, it’s due tonight and I can’t figure it out.
I don't know men sorry but You can see if some one have a idea about the
Make up your own story using as many elements as you can. Rather than writing the name of the element in your story, use its chemical symbol.
Answer:
Once upon a time, H2O was falling down majestically into the river below the large, strong mountains filled with Ti while a little Au hunter walked to search another long day for his hopeful treasures.
Explanation:
Hope this helps, I don't know how long it's supposed to be soooo, yeah
1. 100gm of a 55% (M/M) nitric acid solution is to be diluted to 20% (M/M) nitric acid.
How many liters of water should be added to the starting solution?
Answer:
The volume of water to be added is 0.175 liters of water
Explanation:
The given concentration of the nitric acid = 55% (M/M)
The mass of the nitric acid solution = 100 gm
The concentration solution is to diluted to = 20% (M/M)
The 100 g 55%(M/M) nitric acid solution gives 55g nitric acid in 100 g of solution
Therefore, to have 20% (M/M) nitric acid solution with the 55 g nitric acid, we get
Let "x" represent the volume of the resulting solution, we have;
20% of x = 55 g of nitric acid
∴ 20/100 × x = 55 g
x = 55 g × 100/20 = 275 g
The mass of extra water to be added = The mass of the 20%(M/M) solution solution of nitric acid - The current mass of the 55%(M/M) solution of nitric acid
The mass of extra water to be added = 275 g - 100 g = 175 g
Volume = Mass/Density
The density of water ≈ 1 g/ml
∴ The volume of water to be added that gives 175 g of water = 175 g/(1 g/ml) = 175 ml. = 0.175 l
The volume of water to be added = 0.175 liters of water.
Can someone help me with these questions????
Answer:
can you take a bigger picture
Explanation:
A boy and girl are running with the same speed.if the mass of the boy is 20 times that of girl find the kinectic energy
Answer:
The kinetic energy of the boy is 20 times that of the kinetic energy of the girl.
Explanation:
It is given that,
The mass of the boy is 20 times that of girl.
Let [tex]m_b[/tex] and [tex]m_g[/tex] are the mases of boy and the girls.
A boy and girl are running with the same speed.
The formula for the kinetic energy is given by :
[tex]E=\dfrac{1}{2}mv^2[/tex]
Where m is mass and v is speed
As speed is same for both boy and girl.
Kinetic energy of a girl,
[tex]K_g=\dfrac{1}{2}m_gv^2[/tex] ...(1)
As [tex]m_b=20m_g[/tex]
Kinetic energy of a boy,
[tex]K_b=\dfrac{1}{2}m_bv^2\\\\=\dfrac{1}{2}\times 20m_g\times v^2\ ....(2)[/tex]
From equation (1) and (2) :
[tex]\dfrac{K_g}{K_b}=\dfrac{\dfrac{1}{2}m_gv^2}{\dfrac{1}{2}m_bv^2}\\\\=\dfrac{\dfrac{1}{2}m_gv^2}{\dfrac{1}{2}\times 20 m_gv^2}\\\\\dfrac{K_g}{K_b}=\dfrac{1}{20}\\\\K_b=20K_g[/tex]
So, the kinetic energy of the boy is 20 times that of the kinetic energy of the girl. Hence, this is the required solution.
True or false? During a change of state the temperature of the substance does not change.
Answer:
false
Explanation:
the temperature of a substance can not remain constant as the substance changes from solid to liquid then finllay from liquid to gas. This is so because as a solid is heated it changes state and once it rechanges it boiling point it changes to gas or vapour.
Will give Brainliest!
30 Points!
Which of the following elements has properties different than the rest?
A:H
B:K
C:N
D:O
Answer:
K
Explanation:
its not a gas but the other's are.
New Zealand is one of the most geologically active places on Earth. Earthquakes, volcanoes, and geysers commonly occur throughout the region. What most likely causes these events to happen throughout New Zealand?
Answer:
Tectonic plates
Explanation:
All the natural disasters like earthquakes, volcanoes and geysers appear throughout the region of New Zealand because of the movement of tectonic plates underneath the surface. New Zealand rests on the edges of two tectonic plates including the Pacific and the Australian plates.
protons,
neutrons and
Assuming the following element is neutral, it will have
electrons.
12
Mg
Magnesium
24.305
012, 12, 12
24, 24, 24
12, 24, 12
12, 12, 24
Answer:
Assuming the element Magnesium atom is neutral
Proton # = 12
Neutron # = 12
Electron # = 12
Explanation:
In a neutral atom the number of protons and electrons is always equal
The atomic number tells the number of protons (12) in this case
The Atomic Mass describes the mass of the protons + mass of neutrons, so if you take 12 (number of protons) away you are left with 12 and some change(number of neutrons)
What’s the molecule for Snl2 formula?
Answer:
Tin(II) iodide, also known as stannous iodide, is an ionic tin salt of iodine with the formula SnI2. It has a formula weight of 372.519 g/mol.
Explanation:
the moleque
Which statement compares the strengths of electric forces between particles
of matter?
A. Van der Waals forces and ionic bonds are weaker than hydrogen
bonds.
B. Hydrogen bonds and metallic bonds are weaker than ionic bonds.
C. Hydrogen bonds and metallic bonds are stronger than ionic
bonds.
D. Van der Waals forces and hydrogen bonds are stronger than
metallic bonds.
SUBMIT
The statement that compares the strengths of electric forces between particlesof matter is Hydrogen bonds and metallic bonds are weaker than ionic bonds.
What are electric forces?Electric forces are strong forces or power that exist between atoms of molecules which help to bind those are together and allow the flow of electric charges.
Therefore, statement that compares the strengths of electric forces between particlesof matter is Hydrogen bonds and metallic bonds are weaker than ionic bonds.
Learn more about electric forces below.
https://brainly.com/question/21980164
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In which sentence does the verb agree with the subject?
Answer:
go with that persons
Explanation:
The same amount of force is applied to bowling balls one of the balls Waze 8 pounds and the other weighs 13 pounds which bowl will have a greater acceleration
Answer:
The bowling ball with mass 8 pounds has greater acceleration.
Explanation:
The acceleration on the objects is equal to the quotient of the force applied on it and its mass. From Newton's second law of motion, we have;
F = ma
where F is the force on the object, m is its mass and a is its acceleration.
⇒ a = [tex]\frac{F}{m}[/tex]
Let us assume that a force of 50 N was applied on the two bowling balls.
Thus;
mass of the first bowling ball = 8 pounds = 3.62874 kg
So that,
50 = 3.62874 x a
a = [tex]\frac{50}{3.62874}[/tex]
= 13.779
The acceleration of the first ball is 13.78 m/[tex]s^{2}[/tex].
For the second ball of mass = 13 pounds = 5.8967 kg
So that,
50 = 5.8967 x a
a = [tex]\frac{50}{5.8967}[/tex]
= 8.4793
The acceleration of the second ball is 8.48 m/[tex]s^{2}[/tex].
Therefore, the bowling ball with mass 8 pounds has greater acceleration.