Answers
TELL ME IF YOU NEED TO KNOW WHY
Related Questions
25. What is the total number of moles in 500 ml of a 3.0 M solution of
potassium iodide solution?
(1)1.0
(2) 1.5
(3) 3.0
(4) 3.5
Answers
3.0 M • 0.500 L = 1.5 moles
2) 1.5
What molecules would you expect to find in air
Answers
Answer:
The air in the atmosphere consists of nitrogen, oxygen, which is the life-sustaining substance for animals and humans, carbon dioxide, water vapour and small amounts of other elements (argon, neon, etc.). Higher in the atmosphere air also contains ozone, helium and hydrogen.
Explanation:
Answer:
nitrogen, oxygen, carbon dioxide, water vapour, ozone, helium, and hydrogen.
Explanation:
Claim: Sound is not matter. Which piece of evidence supports this claim?
Sound is made of atoms and has a specific density.
Sound is created when molecules vibrate in a medium,
Sound takes up space and can be weighed on a scale.
Sound does not have mass or volume, it is a form of energy.
Answers
Answer:
Sound Energy is a form of Mechanical Energy
Write the pair sequence using the right base for the mouse DNA. ATGGGTGATGTTGAAAAAGGCAAGAAGATTTTTGTTCAGAAGTGTGCCCAGTGCCACACT
HELP ME PLEASEEEEE !!
Answers
Answer:
Explanation:
Every A will be paired with a T, and every C with a G and vice versa (T to A, and G to C)
So the first letters in the sequence are ATGGG. So the pair will be TACCC.
If I had 50 graham cracker squares, 15 marshmallows, and 100 little chocolate pieces, how many total s'mores could I make before I ran out of ingredients?
2 Grahams + 1 Marshmallow + 4 Chocolate Pieces --> 1 S'more
Group of answer choices:
50
15
100
25
20
Answers
Answer: 15
Explanation:
25 graham crackers
15 marshmallows
25 chocolate pieces
would make 15 s’mores
15 s'mores can be made from the given ingredients. Therefore, option B is correct.
How many total s'mores can be made?Assuming that one graham cracker square, one marshmallow, and two little chocolate pieces to make one s'more are required, calculate the maximum number of s'mores that can be made with the given ingredients as follows:
You have 50 graham cracker squares, so you can make a maximum of 50 s'mores using all of them.You have 15 marshmallows, which is enough to make 15 s'mores.You have 100 little chocolate pieces, which is enough to make 50 s'mores (since you need two chocolate pieces for each s'more).Therefore, the ingredient you run out of first will limit the number of s'mores that can be made. Since there are only 15 marshmallows, only a maximum of 15 s'mores can be made. Therefore, option B is correct.
Learn more about s'mores, here:
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how to light a candle without touching it?
Answers
it’s not that hard
Answer:
use a lighter
Explanation:
Giving brain thing.
Vicky made the following list to describe humidity:
It is the amount of water vapor in the air.
It is shown on weather maps in millimeters or in inches.
It can seen on cold surface as water droplets.
Which statement best describes why the list is incorrect?
A)It can be seen on hot surfaces as water droplets.
B) It is shown on weather maps as a percent.
C) It is the amount of moisture in the air.
D) It is the temperature of water in the clouds.
Answers
Answer: the correct answer is C
Explanation:I hope this helps
4. Identify the phase of each of theses models (solid, liquid or gas)
Answers
Answer:
1st Square - Liquid
2nd Square - Gas
3rd Square - Solid
Explanation:
Laura jala un trineo una distancia de 2000 cm usando una cuerda, con una tensión constante de 80 N. La tarea requiere de 800 J de trabajo, ¿qué ángulo forma la cuerda con el suelo?
Answers
Respuesta:
60°
Explicación:
Paso 1: Información dada
Distancia recorrida (d): 2000 cmFuerza aplicada (F): 80 NTrabajo realizado (W): 800 JPaso 2: Convertir "d" a metros
Usaremos el factor de conversión 1 m = 100 cm.
2000 cm × 1 m/100 cm = 20 m
Paso 3: Calcular el ángulo entre la cuerda y el suelo (θ)
W = F × d × cosθ
800 J = 80 N × 20 m × cosθ
θ = 60°
What is the total number of moles of hydrogen atoms contained in 1 mole of (NH4)2C20?
Answers
Answer: not enough information given, sorry I can’t be more help
Explanation:
write importance of magnesium metal
Answers
Answer:
can be used in fireworks, flares and sparklers
Explanation:
as it burns in air it ignites with bright light
Why is it so difficult to change the temperature of water?
Answers
Answer:It takes a lot of heat to increase the temperature of liquid water because some of the heat must be used to break hydrogen bonds between the molecules. ... Because of its high heat capacity, water can minimize changes in temperature.
Explanation:
What is the enthalpy of the overall chemical reaction CH4(g)+4CI2(g) → CCI4(g)+4HCI(g)?
Answers
Answer:
-205.7 kJ
Explanation:
if ur a connexus kid i just took this too lol
Answer:
A (-205.7)
Explanation:
HELP ME PELASE I JUST NEED THIS LAST QUESTION!
Answers
Answer:
BaSO4
Explanation:
i tried, hope it helped
How much energy is required to raise the temperature of 3 kg of iron from 20°
C to 25°C? Use the table below and this equation: Q = mcAT.
Answers
Answer:
The correct option is (c).
Explanation:
Given that,
Mass of iron, m = 3 kg = 3000 g
The temperature of ice increases from 20° C to 25°C.
The specific heat of iron is 0.45 J/g°C
We need to find the energy required to raise the temperature. The formula is given by :
[tex]Q=mc\Delta T\\\\Q=3000\times 0.45\times (25-20)\\\\Q=6750\ J[/tex]
So, 6750 J of energy is required to raise the temperature or iron.
5.25 ml of substance A has a mass of 3.9 g and 6.24 ml of substance B has a mass of 4.4 g. Which liquid is more dense?
Answers
Answer:
A is more dense
Explanation:
The is because you can find the density of anything by dividing the Mass by volume A is .7428 and B is .7051 . There fore A is denser .
What type of reaction is this? *
Mg + Cl2 → MgCl2
Answers
Answer:
Magnesium (Mg) combines with chlorine (Cl2) to form a new product as magnesium chloride (MgCl2).
Explanation:
Therfore its a combination reaction and the balanced equation can be written as: Mg(s)+Cl2(g)→MgCl2(s)
Answer: Synthesis
Explanation: I just took the test
*HURRY PLEASE AND SHOW YOUR WORK* If 22.5 L of nitrogen at 0.95 atm are compressed to 1.35 atm at constant temperature, what is the new
volume?
Answers
P1 = 0.95 atm
V1 = 22.5 L
P2 = 1.35 atm
(0.95)(22.5) = (1.35)V2
V2 = (0.95)(22.5)/(1.35) = 15.8 L
HELP ASAP
Which can happen when energy is transferred from one system to another?
A.New energy is created.
B.Some energy is destroyed.
C.The energy changes form.
D.The energy changes into mass.
Answers
Answer:
Energy is transferred from one object to another when a reaction takes place.
Explanation:
Energy comes in many forms and can be transferred from one object to another as heat, light, or motion, to name a few.
The answer could be It is a well known fact that energy can neither be created and nor be destroyed but can be transformed from one form to another.
Now talking about your example in a typical light bulb electrical energy is converted into light energy and heat energy. Now when the electric current flows through the conductor/filament in the light bulb,this would cause vibrations and the free ions are more likely to go to an higher energy level,and when the ions come back to their original state,the difference in the two energy levels is usually emitted as a photon,thus light energy is obtained and the heat energy is the energy dissipated as a result of flow of electricity through the conductor.
Anything that gets transformed into light energy or in better words ElectroMagnetic Energy would be a result of this.
HELPPP
Compared with space operations specialists, intelligence officers are which of the following?
less likely to perform on-the-job training
more likely to participate in a technical training
less likely to obtain a bachelor’s degree
more likely to work with highly classified information
Answers
Answeruuuuu it's b I think
Answer:
(dunno exactly but i put:)
more likely to work with highly classified informationIf a 60-g object has a volume of 30cm3 what is its density
Answers
Answer:
2 g/cm3
Explanation:
Density is a measure of a substance's mass over its volume.
d = m/v
Therefore d = 60g/30cm3 = 2 g/cm3
In which numbered position would a Period 4 element that is a metal with three valence electrons be located?
Answers
Did u get the answer im taking the test rn
what is the conjugate base of HC6H6O6-
Answers
Answer:
the conjugate base of the compound is
C6h6O2/6-
Explanation:
subscript
The conjugate base of [tex]\rm HC_6H_6O_6^-\; is \; C_6H_6O_6^-[/tex].
What are conjugate acids and bases?Conjugate acid is the acid that donates a hydrogen ion to a base, conjugate acid contains a hydrogen ion.
The base that gains a hydrogen ion from a conjugate acid is called the conjugate base.
The acid is NH4 converts into a conjugate base NH3-
When a conjugate acid donates a hydrogen ion, it converts into the conjugate base.
Thus, the conjugate base is [tex]\; C_6H_6O_6^-[/tex]
Learn more about the conjugate base
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A good conductor of heat
Answers
what do carbon dioxide and global temperatures do together?
Answers
Answer:
When the carbon dioxide concentration goes up, temperature goes up. When the carbon dioxide concentration goes down, temperature goes down
Explanation:
Answer: when the carbon dioxide concentration goes up the temperature goes up. when it goes down the temperature goes down
Explanation:
CH,O
Needed:
Available:
Shared:
Bonds:
Answers
Answer:
hy do C-C bonds and C-H bonds have high potential energy levels? ... electronegativity so the electrons in the covalent bond are equally shared. Term. Which functional groups are commonly found on a carbohydrate? ... few organisms have the specific enzymes needed to break the bond in the B-form ...
Explanation:
Is freshwater a mixture?
Answers
Answer:
No
Explanation:
A mixture is when two or more substances combine physically together. However, in water, two hydrogen atoms combine with one oxygen atom chemically, forming a new substance that has properties different from hydrogen alone or oxygen alone. ... Therefore, water is not a mixture
A sample of gas has a volume of 2.0 liters at a pressure of
1.0 atmosphere. When the volume increases to 4.0 liters, at constant temperature, the pressure will be
a. 0.50 atm
b. 2.0 atm
c. 0.25 atm
d. 1.0 atm
Answers
What happens to the pH if you then add 0.6L of blood to the mixture? Is the mixture acidic or basic? Was the pH the same as it was in #6?
Answers
Answer:
basic
Explanation:
Please note: Kindly check attachment for the diagram showing phET simulation.
The determination of the pH value of a substance is one of the crucial aspect of Chemistry. A substance can be a basic, neutral or acidic. The basicity of a base can simply be defined as when a base has a characteristic of accepting proton.
The pH of the mixture will turn basic when 0.6L of blood is added to the mixture.
Also, note that the blood is basic, hence there will be a pH value greater that 7 [ 7.30].
The pH in #6 is 7.40. Both #6band this one are basic while their values are slightly different.
A list of changes is shown.
Temperature decreases
Intermolecular bonds become weaker
Freezing
Intermolecular bonds become stronger
Evaporation
Temperature increases
Vibration of molecules slows down
Molecules vibrate faster
Which of the above changes would be accompanied by an increase of the kinetic energy of particles in a liquid?
A, B, C, and H
A, C, D, and G
B, E, F, and H
B, C, F, and G
Answers
Answer:
b,c,f,g
Explanation:
it makes the most sense plus i just took the test <3 good luck
With an increase in the kinetic energy of the solid molecule the intermolecular bonds become weaker, temperature increases, melting and molecules vibrating faster are changes.
What is the effect of the increased kinetic energy?Kinetic energy is the form of the energy that is present in an entity in motion. When the kinetic energy is increased then the temperature of the particles increases and leads to evaporation.
The increased kinetic energy weakens the intermolecular bonds of the liquid particles and the molecules of the particles start vibrating fast.
Therefore, option b. intermolecular bonds become weak, option e. evaporation, option f. temperature increases and option h. molecules vibrate faster are the changes.
Learn more about kinetic energy here:
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