Answer:
n = 3.0 moles
V = 60.0 L
T = 400 K
From PV = nRT, you can find P
P = nRT/V = (3.0 mol)(0.0821 L-atm/K-mol)(400 K)/60.0L
P = 1.642 atm = 1.6 atm (to 2 significant figures)
Explanation:
Which of the following is similar in size to an atom?
A ball used in sports, such as a basketball
A large building, similar to a shopping mall
A particle you cannot see with your eyes
A seed of a fruit from an apple or orange
Which of the following is similar in size to an atom?
A ball used in sports, such as a basketball
A large building, similar to a shopping mall
A particle you cannot see with your eyes
A seed of a fruit from an apple or orange
Answer:
A particle you cannot see with your eyes
Explanation:
An atom is the smallest indivisible particle of an element. It is the particle that determines the chemical properties of an element. However, an atom is a very small-sized particle, of about 10^-10m.
Based on how small a particle is, it cannot be seen with the naked eyes and hence, requires that one uses a microscope to view it.
Explain the law of conservation of mass and give an example that demonstrates it.
Answer:
Mass Cannot be created or destroyed. So everything that goes into a chemical reaction has to come out the other side, like cars driving into a tunnel. Any balanced equation of a chemical reaction is an example
When is Africa's Serengeti plains herbivores migrate across this area following pls pls help me out
In an ideal situation where no heat energy is produced, what is the relationship between the chemical energy provided by the battery and the electrical energy produced according to the Law of Conservation of Energy?
A. The chemical energy should be more than the electrical energy.
B. None of the above
C. The chemical energy should be equal to the electrical energy.
D. The chemical energy should be less than the electrical energy.
Answer: im going to say it is b
Explanation:
PLEASE HELPPP AND THANK YOUUUU
nomenclature of calcium chloride
Answer:
CHEBI:3312 - calcium dichloride
Explanation:
Calcium chloride is an inorganic compound, a salt with the chemical formula CaCl2.
Answer:
CHEBI:3312 - Calcium dichloride
Which fossil fuel is causing the most pollution? PLEASE HELP TIS ASSIGNMENT IS PAST DUE I NEED HELP
Answer:
Coal is the fossil fuel causing the most pollution.
Explanation:
I hope this helps.
2NO(g) + O2 → 2NO2
In one experiment, 1.866 mol of NO is mixed with 4.503 mol of O2.
a)Determine the limiting reagent
b) Calculate the number of moles of NO2 produced.
Answer:
a)NO has smaller moles
b)1.866
A scuba diver swims deeper and deeper into the ocean. What happens to the nitrogen in her blood as she goes deeper
Answer:
it compresses under the pressure.
Explanation:
when she comes up, it will re-expand as pressure goes down- this is why they have to be very careful how fast they come back up.
Answer:
If a diver goes through too great of pressure change too quickly, their body cannot eliminate all of the expanding nitrogen and the excess nitrogen forms bubbles in their tissues and blood. These nitrogen bubbles can cause decompression sickness (DCS) by blocking blood flow to various parts of the body, causing strokes, paralysis, and other life-threatening problems.
If the pOH of a solution is 2, what is the concentration of H+ ions in that solution?
You stir your hot cocoa with a silver spoon that has a mass of 0.032 kg. The spoon’s temperature increases from 20 K to 60 K. What is the change in the spoon’s thermal energy? (Hint: Use the table in Figure 6 to find the specific heat of silver.) SHOW YOUR WORK.
Formula:
Answer:
help!!!!!!
Answer:
A
Explanation:
A
chemistry help please!!
Answer:
no so boring........................
In a reaction, the theoretical yield was 80 g, but the actual yield was 60 g. What was the percentage yield?
Answer:
75%
Explanation:
percent yield is the actual yield divided by the theoretical (predicted) yield, then multiplied by 100 to get a percentage.
60/80 = 0.75
0.75 x 100 = 75%
Answer:
33.34 %
Explanation:
Given that,
Actual yield = 60 g
Theoretical yield = 80 g
We need to find the percentage yield. It can be calculated as follows :
[tex]\%=\dfrac{Acutal-theoretical }{Actual}\times 100\\\\=\dfrac{60-80}{60}\times 100\\\\=33.34\%[/tex]
So, the required percentage yield is 33.34 %.
In which object does chemical energy most likely transform into electrical energy?
Write about a time that you were really confused in Science class. What did you do? Who did you get help from? How did you explain what was confusing you?
when I was really confused in science class and I think a lot but not found in book then I get help from my friend but he also don't know that and then finally my teacher solves it the question was what makes a rainbow .
How many liters would you need to make a 2 M solution if you have 3 mol of Sodium Hydroxide
Answer:
A 1 molar (M) solution will contain 1.0 GMW of a substance dissolved in water to make 1 liter of final solution. Hence, a 1M solution of NaCl contains 58.44 g.
Explanation:
What happens to the rate constant as activation energy increases?
This model shows a single unit of a compound containing several elements what is the chemical formula for the substance
Explanation:
First Question
- The correct chemical formular is ; Al2(SO4)3
Second question
The following applies;
- The mass of the products is the same as the mass of the reactants
- At least one new product formed is a gas
- Molecules are changing into different molecules
Third Question
- Zn + HCl → ZnCl2 + H2
Fourth Question
- The atoms in the original substances regroup and form a different substance
- Matter is conserved
- The same atoms are present before and after the reaction
A 2.0 L bag of potato chips in Denver is that 15 C0 print 82 ATM. The same bag is brought to the top of long peaks in the cold winter day. If the back and only spent 2.5 L before exploding and along peak has a temperature of negative 5C and a pressure of 0.45 ATM for the bag explode
Answer:
hello your question is poorly written below is the complete well written question
.A 2.0 L bag of potato chips in Denver is at 15oC and 0.82 atm. The same bag is brought to the top of Longs Peak on a cold winter day. If the bag can only expand to 2.5 L before exploding and Longs Peak has a temperature of -5oC and a pressure of 0.45atm, will the bag explode? Use the combined gas law to prove this to yourself
answer : The bag will explode
Explanation:
Given data :
Volume of bag ( v1 ) = 2 liters
Initial pressure ( p1 ) = 0.82 atm
Initial temp ( T1 ) = 15 + 273 = 288 k
Final Pressure on long peak (P2) = 0.45 atm
Final temp on Long peak (T2) = (273 - 5 ) K = 268 K
Determine the Final volume in long peak to know if the bag will explode
applying the gas laws
P1v1 / T1 = P2V2 / T2
V2 = p1*v1*T2 / p2 *T1
V2 = ( 0.82 * 2 * 268 ) / ( 0.45 * 288 )
= 3.39 Liters
since final volume ( V2 ) > ( v1 ) the bag will explode
How is hess's law applied in calculating enthalpy
Answer: To develop a strategy for the order in which you add the various equations.
Explanation:
In a Hess’s Law problem, you have to develop a strategy for the order in which you add the various equations. hope this helps <3
The statement, that describes Hess's law applied in calculating enthalpy is "all the reactions in a path are added together."
What is Hess' law?Hess' law of continuous heat summation, abbreviated as Hess' law. Hess' law says that the rise in enthalpy, or reaction heat at constant pressure, in a chemical reaction is independent of the process between the starting and final states.
According to Hess's Law, the enthalpy change for a chemical reaction is independent of the route travelled. This indicates that the overall enthalpy change will be the same regardless of how many steps are completed. Because enthalpy is a state function, we can calculate the overall change in enthalpy by simply adding the changes at each step along the way until the product is obtained All processes must take place at the same temperature, and the equations for each step must balance.
In a Hess's Law problem, you must devise a technique for adding the numerous equations in the correct order.
Hence the correct answer is B.
Learn more about Hess's Law here
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This type of cloud are high feathery clouds made of ice crystals...
A cirrus
B nimbus
C cumulus
D stratus
Answer:
the answer is a because cirrus clouds have that definition
Plz help me !!!!!!!!!!!!!!!!!!!
Answer:
K3N
Explanation:
writing formulas from valency
the valency of potassium is 1
the valency of nitrogen is 3
that will be
K. N
1. 3
cross multiply
that will be
K3N
Which of the following best explains
why ionic bonds form between ions?
A. Ions with opposite charges
are attracted to one another.
B. lons tightly bond together because
they have identical physical structures.
C. Positive ions attract other positive ions.
D. Negative ions attract
other negative ions.
Explanation:
B has a correct statement
if you mix the two liquids, propanol and vegetable oil, are they miscible or immiscible?
Answer:
it would be immiscible
Explanation:
They would not mix similar to oil and water
The answer is true
hope this helps :)
Describe an experiment that can be done to prove the law of conservation of mass?
Explanation:
Given alka - seltzer and a flash, students design and conduct an experiment to prove the law of conservation of mass.3)Methanol can be produced as follows: CO (g) + 2 H2 (g) + CH4O (g)
If 250.0 L of hydrogen gas are reacted with excess CO at STP, how many grams of CH40 can be produced?
True or False
The number that we put in front of the
formula is known as the coefficient.
Most hot air balloons are round. Yes, you can have some other shapes like this one, but its shape is still rounded. Using the assumptions, explain why a square hot air balloon would be hard to make.
A square hot air balloon would be hard to make because the round shape of traditional hot air balloons allows for even distribution of heat, which is necessary to maintain the balloon's lift and stability.
What is a hot air balloon ?A hot air balloon is a balloon filled a heated air which can rise above the atmosphere. In a round balloon, the heat from the burner is evenly distributed around the circumference of the balloon, causing the air inside to heat up and rise, which in turn causes the balloon to lift.
If a hot air balloon were to be made in a square shape, the heat would be distributed unevenly and concentrated in certain areas. This could cause the balloon to become unstable, as the hot air would rise in some areas but not others, leading to uneven lifting and potential loss of control.
Additionally, the corners of the square shape would be more susceptible to damage and could create weak points in the structure of the balloon.
Therefore, while it is possible to create hot air balloons in other shapes, the traditional round shape has been found to be the most effective and efficient for maintaining the necessary heat distribution and stability required for safe and successful flight.
Find more on hot air balloon:
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Use the model provided to select ALL of the examples of mixtures.
A) iced tea
B) salt water
C) table sugar
D) orange juice
E) aluminum oxide
Answer:
Explanation:
Ice tea
Salt water
Orange juice
The castaways have been on an island for 15 days. They have created a game to pass the time. Each castaway throws a coconut and whoever throws theirs with the highest average speed wins. How many seconds did it take for the third coconut to travel 30 m?
The answer would be 2.
Basically all you do is t = d/s which means time equals distance divided by speed. And your answer will be 2