Answers
Answer:
Charle's Law ... V ∝ f(T); Pressure and Mass remain constant
Explanation:
Charle's Law is one of the empirical gas laws relating the effect of temperature on volume of a gas while pressure and mass (moles) of substance remain constant. Basically, Charle's Law states that the change in volume associated with a confined mass or gas is directly proportional to the applied temperature.
For a directly proportional relationship between Volume (V) and Temperature (T) the empirical formula is written V ∝ T. This is then set in equation form by including a 'proportionality constant' giving V = k·T. In applications, problems generally provide 'initial' Temperature (T₁) and Volume (V₁) along with a final Temperature (T₂) or final Volume (V₂) and asked to calculate the unknown variable. The Charle's Law relationship detailing this is derived as follows:
V = k·T => k = V/T
The k-value is constant for both the initial and final conditions such that...
k₁ = k₂ => V₁/T₁ = V₂/T₂
Example: Assume a gas volume of 25 liters at 25°C, what would be the gas volume if cooled to 0°C?
Set-up a data table
V₁ = 25L & V₂ = ?
T₁ = 25°C & T₂ = 0°C => these values need to be converted to Kelvin Temps so as to avoid division by '0'. So...
T₁ = (25 + 273)K = 298K & T₂ = (0 + 273)K = 273K
Substituting into V₁/T₁ = V₂/T₂ and solving for V₂ provides the new volume.
25L/298K = V₂/273K => V₂ = (25L)(273K)/(298K) = 22.9L ≅ 23L (2 sig. figs.)
Generally, to check work, examine the change in volume relative to the change in temperature. For a direct proportionality a decrease in temperature as in the example would give a decrease in volume consistent with Charle's Law. Note that 273K/298K times 25L gives a smaller resulting volume value. If one applies '298K/273K' times the 25L, a larger value would result and is inconsistent with Charle's Law.
Related Questions
For the balanced equation shown below, how many moles of N2 reacted, if 155 moles of NH3 are produced?
3H2 + N2 => 2NH3
Answers
Answer: 1 mole nitrogen produces 2 moles ammonia
How many moles you need for 155 mol ammonia?
155/2 moles
Explanation:
Which of the following MOST influences a major
shift in how the entire nucleotide sequence is
read?
А
base-pair substitutions and point mutations
B
silent mutations and nonfunctioning proteins
С
missense mutations and nonsense mutations
D
base-pair insertions and deletions
Answers
Answer:
Which of the following MOST influences a major
shift in how the entire nucleotide sequence is
read?
А base-pair substitutions and point mutationsB silent mutations and nonfunctioning proteins
С missense mutations and nonsense mutations
D base-pair insertions and deletions
Among the given disorders, missense mutations and nonsense mutations which mostly influences the shift in entire nucleotide.
What is mutation?A nucleotide is made of ribose sugar, phosphate groups and base pairs. Each base have a complementary base to which it pairs. If any disorder occurs in the base pairing or coding in nucleotide it is called the mutation.
A missense mutation is a sort of point mutation or single base mutation that alters the DNA by replacing one nucleotide of the codon with another nucleotide, thus changing the amino acid that is coded for in the protein.
A nonfunctional protein may emerge from the substitution of an amino acid, or the protein may not be impacted at all. Whether the mutational alterations are "conservative" or "nonconservative" will determine the functionality of the resulting protein.
It's interesting to note that the mutation is known as a nonsense mutation when the alteration in the codons nucleotide causes the development of the stop codon. The nonsense mutation causes the premature end of protein synthesis as a result of the creation of the stop codon.
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Question 3
5 pts
The diagram shows a 21.7kg ball located on a shelf 1.6m above the ground. Which best describes the energy
of the ball?
o C. It has mechanical energy in the form of potential energy
O A. Its energy is lost once it falls off the shelf.
O B. Its energy depends upon the speed the ball will travel.
O D. It has mechanical energy in the form of kinetic energy.
Answers
Answer:
c
Explanation:
The ball of 21.7 kg which is located on a shelf 1.6 m above ground is having a mechanical energy in the form of potential energy. Hence, C best describes the energy of the ball.
What is potential energy ?Potential energy is the energy stored on it when the object is at rest. Kinetic energy of an object is generated by virtue of its motion. When a body starts moving its potential energy starts converts to kinetic energy.
The sum of kinetic and potential energy of an object is called its mechanical energy. An object has mechanical energy in the form of kinetic energy when it is at rest. When it starts to move its potential energy converts to kinetic energy.
Therefore, the ball of 21.7 kg placed in the shelf of height 1.6 m has a potential energy as long as it stays there on the shelf. Its potential energy = mgh
p = 21.7 kg × 9.8 m/s² × 1.6 m = 340.25 J
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weeks and how much money, in dollars, Jamal deposits into the savings account.
Week
Deposit (dollars)
0
10
1
15
2
20
3
25
4
30
Let f ()represent the amount of money Jamal deposits into his savings account at the end of 2 weeks. Based on the table,
what is f(10)?
E
A
50
0
С
D
60
B
10
2.
3
4
5
6
7
8
9
10 11
Next
Activat
Go to Setto
1002A
3/19/20
CH
O
BH
Type here to search
Answers
An
196 becase we all rice
Explanation:
Worldwide, nearly______ of the population live without clean drinking water.
A. 1/4
B. 1/2
C. 1/3
The answer is 1/3 so, ya'll can take the points just say the answers 1/3.
Thank u.
Answers
Answer:
1/3
Explanation:
SNAZZY
Oxycodone (C18H21NO4), a narcotic analgesic, is a weak base with pKb = 5.47. Calculate the pH of a .00500 M oxycodone solution.
Answers
Answer:
pH = 10.11
Explanation:
Hello there!
In this case, since it is possible to realize that this base is able to acquire one hydrogen atom from the water:
[tex]C_{18}H_{21}NO_4+H_2O\rightleftharpoons C_{18}H_{21}NO_4H^+OH^-[/tex]
We can therefore set up the corresponding equilibrium expression:
[tex]Kb=\frac{[C_{18}H_{21}NO_4H^+][OH^-]}{[C_{18}H_{21}NO_4]}[/tex]
Which can be written in terms of the reaction extent, [tex]x[/tex]:
[tex]Kb=\frac{x^2}{0.00500M-x}=3.39x10^{-6}[/tex]
Thus, by solving for [tex]x[/tex] we obtain:
[tex]x_1=-0.000132M\\\\x_2=0.0001285M[/tex]
However, since negative solutions are now allowed, we infer the correct [tex]x[/tex] is 0.0001285 M; thus, the pOH can be computed:
[tex]pOH=-log(x)=-log(0.0001285)=3.89[/tex]
And finally the pH:
[tex]pH=14-pOH=14-3.89\\\\pH=10.11[/tex]
Best regards!
Where have you seen evidence of viscosity?
Answers
Answer:
Lubrication in vehicles. When you put oil into your car or truck, you should be aware of its viscosity
Cooking. Viscosity plays a significant role in the preparation and serving of food.
Manufacturing. Manufacturing equipment requires appropriate lubrication to run smoothly.
oh, and medicine
that isssssss? (thank you whoever answers in advance)
Answers
Answer:
c
Explanation:
A pathogen or infectious agent is a biological agent that causes disease or illness to its host. The term is most often used for agents that disrupt the normal physiology of a multicellular animal or plant. However, pathogens can infect unicellular organisms from all of the biological kingdoms.
Answer:
Harmful to living organisms
Explanation:
tbh, quizzlet lol
What kind of data does doppler radar provide?
Answers
EXPLANATION: the doppler radar uses the doppler effect to provide data about the velocity of objects at a distance
Answer:
the one above is not right
Explanation:
What is a cone of depression and how is it caused?
Answers
Answer:
Depression can be caused by many things, like being neglected, abused, or even trauma. Even thoughts that might trigger sadness, or anxiety it's caused by alot of problems of your life or others around you
Explanation:
hope this helps a bit :)
When a well is pumped, the water level in the well is lowered. By lowering this water level, a gradient occurs between the water in the surrounding aquifer and the water in the well. Because water flows from high to low water levels or pressure, this gradient produces a flow from the surrounding aquifer into the well.
As the water flows into the well, the water levels or pressure in the aquifer around the well decrease. The amount of this decline becomes less with distance from the well, resulting in a cone-shaped depression radiating away from the well. This, in appearance, is similar to the effect one sees when the plug is pulled from a bathtub. This conical-shaped feature is the cone of depression.
What is the formula of the compound between calcium and sulfur that has the percent composition 55.6% (by mass) calcium and 44.4% (by mass) sulfur? What is the formula of the compound between calcium and sulfur that has the percent composition 55.6% (by mass) calcium and 44.4% (by mass) sulfur? Ca2S4 CaS Ca2S CaS4 CaS2 Request
Answers
Answer: The empirical formula is [tex]CaS[/tex]
Explanation:
If percentage are given then we are taking total mass is 100 grams.
So, the mass of each element is equal to the percentage given.
Mass of Ca= 55.6 g
Mass of S = 44.4 g
Step 1 : convert given masses into moles.
Moles of Ca =[tex]\frac{\text{ given mass of Ca}}{\text{ molar mass of Ca}}= \frac{55.6g}{40.08g/mole}=1.38moles[/tex]
Moles of S =[tex]\frac{\text{ given mass of S}}{\text{ molar mass of S}}= \frac{44.4g}{32.06g/mole}=1.38moles[/tex]
Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.
For Ca = [tex]\frac{1.38}{1.38}=1[/tex]
For S = [tex]\frac{1.38}{1.38}=1[/tex]
The ratio of Ca : S = 1:1
Hence the empirical formula is [tex]CaS[/tex]
I went for a walk the other day. I went four blocks east, then seven blocks south, then one block west and finally
eight blocks north
a.What distance did I travel?
b. What's my displacement?
Answers
Answer:
a) distance is 4+7+1+8=20 blocks
b) displacement is 10 blocks
Explanation:
find displacement: x and y
x axis displacement = 4-1 = 3 blocks
y axis displacement = -7+8= 1 block
displacement = the square root of 3^2 + 1^2
= 9+1 = 10 blocks.
You can find the angle of displacement with respect to the initial position using trig identities, if you wish.
Which element is used in the treatment of patients with respiratory diseases in hospitals?
Answers
Answer:
I think the oxygen.
Answer:
Oxygen (O2)
Explanation:
The fundamental importance of oxygen to life on this planet ensures its place in the care of patients with respiratory disorders. Although now well established for hypoxic patients, many questions remain regarding the benefits of oxygen for varying severity and types of chronic lung disease.
Question is on the image
Answers
Answer:
It has direction and size.
Explanation:
The way I learned it was that vectors have direction and Magnitude. Magnitude is just the length of the vector. So you are right.
What is the molarity of a solution when 2.75 g of NaCl is dissolved in 1100 mL of solution?
0.043 M
0.25 M
0.43 M
4.27 M
Answers
Answer:
Explanation:
0.25 M
The molarity of a solution will be 4.27M .
What is molarity?Molarity (M), often known as molar concentration, is the concentration of a solution expressed in moles of solute per liter of solution.
What is solution?Solution can be considered as a mixture of more than one component. It may be homogeneous solution as well as heterogeneous solution.
Gram to mole conversion:
[tex]=\;2.75\;g.\;\frac{1\;mol}{58.44g} \\=\;0.0470 \;mol[/tex]
Molarity of the solution can be calculated by using the following formula:
It is calculated that, moles of solute = 0.0470 mol, volume of the solution = 1100 mL.
Now, put the value of given data in molarity formula:
[tex]Molarity=\frac{Moles\;of\;the\;solute}{Volume \;of\; the\; solution} \\=\frac{0.0470\;mol}{1100 \;mL} \\=\;4.27\;mol/mL\\=\;4.27\; M[/tex]
Therefore, the molarity of a solution will be 4.27M.
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Molar Mass:
Find the molar masses of the following compounds. Also report the number of atoms in the compound:
1) NaBr
2) PbSO4
3) Ca(OH)2
4) Na3PO4
5) (NH4)2CO3
6) C6H12O6
7) Fe3(PO4)2
8) (NH4)2S
9) Zn(C2H3O2)2
10) AgF
Answers
Answer:
Atomic models are important because, they help us visualize the interior of atoms and molecules, and thereby predicting properties of matter.
Explanation:
We study the various atomic models in our course of study because, it is important for us to know, how did people come to the present concept of an atom. How did physics evolve from classical to quantum physics.
All these are important for us to know and thus, knowledge about various atomic models, their discoveries and drawbacks and finally improvements based on scientific evidence present at that time is important for us to understand the underlying theory very well.
Explanation:
A DAY IN THE LIFE OF METIS JOURNAL. I WROTE IT HOPE U LIKE IT XD
We, who live in the west, were Nomadic. So we always moved from place to place to hunt buffalo and other fur-bearing animals. And now again we have to shift everything we collected , like, all the essential needs we collected. It’s really hard to shift stuff, But when you move to a new place you get to see new beautiful places. They are just so satisfying to see! It’s like all my work(like the shifting work) is paid off. I love it! We always meet the Hudson’s bay company employees, and give them furs which we took from the bissons and other furry animals we hunted. And in exchange they give us their (Hudson’s Bay company) goods. Which is good! Because then we or I won't be able to enjoy that delicious pemmican!
The one reason that makes me proud of my parents is that because of them I am like a translator for both sides in the fur trade! Anyways coming back to the present. As I said before, we were moving today to another place, But on the way some people along with my father will ride the famous York boats carrying supplies to fur posts. I begged my father to take me with him! And as usual he gave me some silly reason for me to stay. And now since I don’t have anything to do I will-..Nevermind, My mom’s calling me. Okay after helping my mom keep the fur posts into the York boats me , my mom, and the others are just relaxing and enjoying nature just to take a break. Since, I am so obsessed with my Journal notebook today I’m just going to sit here and right what comes to my mind. I’m not like the others who always seem to be talking with someone. I like my own space!
I kind of miss my dad already, but he and his fellow members need to travel the waterways from the red river further west and north to hudson bay. These red river carts also travel the trek back and forth over land to St. Paul, Minnesota and to posts in saskatchewan. Speaking about the red river, the only large settlement in the region is the red colony. About 12000 people lived in this colony around Fort Garry. Some were the original Selkirk settlers or their descendents. They had come from Scotland with lord Selkirk when he established the colony in 1811. Many of these original settlers were poor farmers who had been displaced from their lands in scotland. They had endured many hardships in the early years of settlement, including foods, hunger, and sickness. I love studying about other colonies, cultures , history etc.
A girl is pushing on an object with a force of 25 N. A boy is pushing on the same object but from the other direction with a force of 35 N. What is the net force acting on the object?
Answers
Answer:
Since the force applied at both ends is acting in opposite directions, then the resultant force becomes negative.
= 35 - 25 = 10
Which of the following is an example of kinetic energy?
O B. a stretched rubber band
O C. a piece of coal
O A. a battery
O D. a rolling ball
Answers
Correct me if I’m wrong
How many molecules are found in 3.4 moles of carbon dioxide?
Please help me asap! :0
Thank you!
Answers
Answer:
One mole of anything has 6.023 x 10^23 molecules.
That would mean 3.4moles of CO2 have 6.023x 10^23 times 3.0.
So that would be2.04782×10^24 molecules in 3.0 moles of C02.
Mole measure the number of elementary entities of a given substance that are present in a given sample. 2.047×10²⁴ molecules are found in 3.4 moles of carbon dioxide.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
Mathematically,
number of molecules of carbon dioxide = number of moles of carbon dioxide ×6.022×10²³ molecules
Number of moles of carbon dioxide=3.4moles
Substituting the values in the above equation we get
number of molecules of carbon dioxide =3.4moles×6.022×10²³ molecules
number of molecules of carbon dioxide =2.047×10²⁴
Therefore, 2.047×10²⁴ molecules are found in 3.4 moles of carbon dioxide.
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Which of these is a behavioral adaptation?
An anteater has a very long tongue to help it eat catch and eat ants.
An artic fox has white fur which helps it blend into the snow.
A mouse has 3–14 offspring at a time to increase the number that survive.
A brown bear hibernates and becomes inactive during winter.
Answers
Answer: Your answer would be D
Explanation: Sorry if i get it wrong ! (but good luck and make sure to rate)
Answer:
D
Explanation:
because when it is winter
a bear hibernates in a cave
and eats lots of food so it
dosent starve after sleeping
for such a while.
Hope this helps
plz mark brainliest
if you would be so kind!
bye!
Which of the nine substances are made of three elements?
Answers
Answer: You are made of mostly 6 elements: Oxygen, Carbon, Hydrogen, Nitrogen, Calcium, and Phosphorus. Some of these elements combine to form compounds in your body.
Explanation:
What causes a sharp increase in potential energy when two
atoms approach more closely to one another then their ideal
bond distance?
A. Electrostatic repulsion between electron clouds
B. Gravitational force between the atoms
C. Electrostatic repulsion between nuclei
D. Electrostatic attraction between electrons and nuclei
Answers
C. Electrostatic repulsion between nuclei
Explanation:
Quizlet is a good source to use if Brainly doesn’t provide the answer for you. Anyways, I hope this helps!
Given the balanced equation: 4Fe(s) + 30₂(g) → 2Fe₂O₃(s) + 1640 kJ Which phrase best describes this reaction?
A) endothermic with AH = +1640 kJ
B) endothermic with AH =-1640 kJ
C) exothermic with AH= +1640 kJ
D) exothermic with AH = -1640 k
Answers
Answer:
yeah the answer under the explanation
Explanation:
The answer is (4) exothermic with ΔH = -1640 kJ. The 1640 kJ energy is at the right side of equation means that it releases energy. The enthalpy change means the energy of production minus the energy of reactants. If it is exothermic, the ΔH < 0.
Using the rules of electron configurations is this a valid orbital diagram?
Answers
Measure out 2.87 moles of sodium chloride (Nacl) into a clean dry cup.
Answers
Answer: weigh is m = n × M = 2.87 mol × 58.44 g/mol
Explanation: mass = amount of substance × molar mass
M((NaCl) = 22.99 +35.45
Why is it important to know characteristics that matter undergoes in chemistry? How can we analyze the relationships between chemical and physical changes and properties?
Answers
Answer:
It's important for scientists to know the properties of matter because all things are made up of matter. Each type of matter has different physical characteristics and scientists need to know and understand these characteristics to make calculations. ... The main phases of matter are solid, liquid, and gas.
THIS IS SCIENCE
PLEASE HELP
Answers
Answer:
An unbalanced force? .
Pls give me feedback if thats not right.
A forecaster studying the climate of an area would find which of the following most helpful?
A. average yearly precipitation
B. today's barometric pressure
C. temperature changes in one month
D. how often natural disasters occur
Answers
A forecaster studying the climate of an area would find average yearly precipitation most helpful.
What is forecaster studying of climate?Forecaster studying of climate tells about the changes which will occur in the atmosphere in the upcoming future time.
Forecasting is done by measuring various environmental factors for the prediction of atmosphere. As it will given information about the percent of rainfall in the upcoming days, amount of precipitation, snowfall and so on.
Hence, option (A) is correct.
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how do i break my leg
Answers
Answer:
why would u want 2?
Explain in the comments why.
I need help with this for an assignment
Answers
hydrochloric acid reacts with sodium hydroxide to form sodium chloride (the salt) and water.
Explanation:
Sodium chloride is made up of Na+ cations from the base (NaOH) and CI-anions from the acid (HCI).
Hope this helped!