Answer:
V= 33.6L
Explanation:
The reaction between hydrogen and nitrogen is
3H2(g) + N2(g) + 2NH3(g)
Please help me with questions 43, 44, and 45
9. If 1,785 cal of heat is added to a 343 g sample of water (specific heat = 4.18J/g °C) at 1202,
what is the *final temperature of the water? *
(1 Point)
15.76°C
031'c
18.24°C
1.24°C
Answer:
17.21°C
Explanation:
Using the following formula;
Q = m × c × ∆T
Where;
Q = amount of heat in joules
m = mass of substance in grams
c = specific heat capacity of water (4.184 J/g°C)
∆T = final temperature - initial temperature
According to the information provided in this question,
Q = 1,785 cal
1 cal = 4.184 J
1785 cal = 7468.4J
m = 343grams
c = 4.18J/g °C
initial temperature = 12°C
Using Q = m × c × ∆T
7468.4 = 343 × 4.18 × (T - 12)
7468.4 = 1433.74(T - 12)
7468.4 = 1433.74T - 17204.88
7468.4 + 17204.88 = 1433.74T
24673.28 = 1433.74T
T = 24673.28 ÷ 1433.74
T = 17.21°C
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?
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.
The _________ force between the sun and the Earth keeps the Earth in its orbit. The period of ______ is the time it takes for Earth to complete one orbit.
Question 1 options:
revolution, gravitational
rotate, gravitational
gravitational, rotate
gravitational, revolution
Gravitational force is the force between the sun and the Earth keeps the Earth in its orbit. The period of revolution is the time it takes for Earth to complete one orbit.
What is gravitational force?Gravitational force is a kind of attraction force which acts between the two bodies.
Sun's gravitational force is a 3 dimensional attraction force under which earth is present. And due to centripetal force of sun, orbit of earth is present in the stationary state. Earth revolves around the sun to complete one round of orbit and this motion is known as revolution of earth.
Hence, gravitational force is present between the sun and the earth, and revolution is the time to complete one orbit.
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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 :)
The valency of chlorine is.
what does it mean
Answer:
Explanation:
The valency of chlorine is 1 .It means that chlorine has seven valence electrons in its valence shell so it gains one electron from others to be stable during chemical reaction. so its valency is 1.
hope it helps :)
Scientists often repeat experiments multiple times.
Why is this important?
A.
Repeating an experiment helps to verify the results.
B.
Repeating an experiment turns a hypothesis into a theory.
C.
Repeating an experiment allows scientists to test different variables.
D.
Repeating an experiment gives scientists something to do while they think of new hypotheses.
Answer:
A
Explanation:
Hi! The reason scientists often experiments multiple times is because repeating an experiment helps to verify the results.
um...Is sulfur dioxide ionic or molecular?
Answer:
It is a molecular compound.
Explanation:
Answer:
Sulfur dioxide, SO2, is a molecular compound.
Explanation:
It contributes to acid rain, and CaCO3 is an ionic compound that can neutralize acid rain.
“Nature vs. nurture” is a debate about
A
whether a trait is learned or inherited.
B
the traits of plants vs. the traits of animals.
с
whether animals can teach humans new traits.
D
whether a trait was acquired outdoors or indoors.
Answer:
Letter A
whether a trait is learned or inherited
Explanation:
The nature versus nurture debate involves the extent to which particular aspects of behavior are a product of either inherited (i.e., genetic) or acquired (i.e., learned) influences. Nature is what we think of as pre-wiring and is influenced by genetic inheritance and other biological factors.
The debate called Nature vs. nurture is about whether a trait is learned or inherited. This is an investigation on learned traits and nurtured traits in humans. Thus option A is correct.
What are learned traits ?All living things are learning something during their growth. These learning mold up one's personality and cannot be created by birth. Like the good characteristics we are learning from schools. These behaviors are called learned traits.
Some traits or behaviors are created by birth itself and they are called natural traits. The nature versus. nurture debate is a philosophical, scientific, and cultural discussion about whether human culture, conduct, and personality are largely influenced by nature or nurture.
Environment, culture, and experience are the most prominent definitions of nurture in this discussion, whereas nature is frequently regarded as genetic or hormone-based behaviors, characteristics, and dispositions.
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At a constant temperature the pressure on a 10.0L sample of gas is charged from 1140 torr to 1.00 atm. What is the new volume of gas sample?
Answer:
15 L
Explanation:
From the question given above, the following data were obtained:
Initial volume (V₁) = 10 L
Initial pressure (P₁) = 1140 torr
Final pressure (P₂) = 1 atm
Final volume (V₂) =?
Recall:
1 atm = 760 torr
The new (i.e final) volume of the gas can be obtained as follow:
Initial volume (V₁) = 10 L
Initial pressure (P₁) = 1140 torr
Final pressure (P₂) = 760 torr
Final volume (V₂) =?
P₁V₁ = P₂V₂
1140 × 10 = 760 × V₂
11400 = 760 × V₂
Divide both side by 760
V₂ = 11400 / 760
V₂ = 15 L
Therefore, the new volume of the gas is 15 L
If i add water to orange juice is that a physical change or chemical change?
Answer:
Nope, not a chemical change.
Explanation:
i hope this helps ok bye luv!!!!!!!!!!!!!!!!!!!!
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
7
What type of molecule would deviate the most from ideal gas behavior?
Answer:
molecule at low temperature and high pressure
Explanation:
this is because two of the postulates of kinetic theory of gases hold true only when there is low pressure and high temperature. as the pressure goes on increasing and temperature goes on decreasing, a molecule will deviate from ideal behavior.
chemistry help please!!
Answer:
no so boring........................
A gardener cut her finger while pruning shrubs. She noticed that after two weeks the wounds had nearly healed with just a small scar remaining. Which statement describes what will happen next?
A. Each one of the individual cells near the wound will grow in size to cover the injured part.
B. Cells will be transported from distant areas to the wound to cover the injured area.
C. The cells near the wound will produce identical cells by mitosis to repair the damaged tissues.
D. A material will be released by the injured cells that will cover the wound and repair the cells.
Answer:
c
Explanation:
The wound will be healed by the production of new cells near the wound by the cell replication process and the therefore the identical cells are produced by the mitosis to repair the damaged tissues.
Note the below points about mitosis;
The mitosis is a process in which the cell replication occurs.In mitosis, the single parent cell is divided into two identical daughter cells by the process of cell division, it takes by time.The mitosis involves the healing of wound, growth of the organisms, replacement of the worn out cells.Thus, mitosis is the process involved in the healing of wound in living beings.
Therefore, we can say that the answer of the question is C. The cells near the wound will produce identical cells by mitosis to repair the damaged tissues.
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which nonmetal has the greatest chemical activity?
Answer:
element fluorine
Explanation:
Since the noble gases are a special group because of their lack of reactivity, the element fluorine is the most reactive nonmetal. It is not found in nature as a free element. Fluorine gas reacts explosively with many other elements and compounds and is considered to be one of the most dangerous known substances.
Answer:
element fluorine
Explanation:
Since the noble gases are a special group because of their lack of reactivity, the element fluorine is the most reactive nonmetal. It is not found in nature as a free element. Fluorine gas reacts explosively with many other elements and compounds and is considered to be one of the most dangerous known substances.
if a solution has a pH of 1.50, what is the pOH of the solution?
Answer:
pOH = 12.50
Explanation:
pOH + pH = 14
pOH = 14 - 1.50 = 12.50
Which characteristic of planets depends upon its distance from the Sun?
Answer:
I think its the length of its year
Answer:
the length of its year
Explanation:
Please help me ASAP!!
Chemistry
Based on the information in the table, which of the following arranges the bonds in order of decreasing polarity?
Answer:
F,Cl,N,I,Se,H
Explanation:
polarity increases as electronegativity increases i guess so that is supposed to be the answer
How many Protons, Electrons, and Neutrons are there in Oxygen
Answer:
Name Oxygen
Atomic Mass 15.999 atomic mass units
Number of Protons 8
Number of Neutrons 8
Number of Electrons 8
Explanation:
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.
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The blood pools in the ___ vessels in those areas if they are not exposed to some kind of pressure.
A. small
B. faster
Answer:
A
Explanation:
It's smaller hole
Answer:
I would say A.
Explanation:
Which chemical equation is correctly balanced?
O Mg(NO3)2 + 2K2CO3 →→ MgCO3 + 2KNO3
O Mg(NO3)2 + K2CO3 → MgCO3 + 2 KNO3
2Mg(NO3)2 + K2CO3 - 2MgCO3 + KNO3
Mg(NO3)2 + K2CO3
MgCO3 + KNO3
Answer:
Mg (NO3)2+ K2CO3 ⇒ Mg CO3 + KNO3
Mg=1 ,N =2, O =6 +3 9 ,K =2 ,C=1 , (reactant side)
Mg =1, C = 1 ,O = 3+3 = 6 , K= 1., N =1 (product side)
Mg(NO3)2 + K2CO3 ⇒ Mg CO3 + 2KNO3
Mg =1 , C = 1, O =3+6=9, K = 2 IN product side
ANS:
Mg (NO3)2 +K2CO3 ⇒ MgCO3 +2 KNO3
Explanation:
As the temperature of a gas is increased, the average kinetic
energy of its molecules
Answer:
Increases.
Explanation:
Temperature is the measure of the average kinetic energy of a system. As temperature increases, so will kinetic energy. As kinetic energy increases, speed increases.
HNO3 + H2SO4 + NO
You now have these half-reaction equations:
3e + HNO3 → NO
S→ H2SO4 + 6e
Which factor will you use for the top equation?
Which factor will you use for the bottom equation?
Explanation:
The two half equations are;
3e + HNO3 → NO
S→ H2SO4 + 6e
When balancing half equations, we have to make sure the number of electrons gained is equal to the number of electrons lost.
Which factor will you use for the top equation?
We multiply by 2 to make the number of electrons = 6e
Which factor will you use for the bottom equation?
We multiply by 1 to make the number of electrons = 6e
Answer:
2
1
Explanation:
(NH4)2 + NaOH -> NH3 + Na2SO4 + H2O how to make this balanced
Answer:
(NH4)2SO4 + 2NaOH --> 2NH3 + Na2SO4 + 2H2O
Explanation:
how does latitude affect the temperature in an area
Answer:
Latitudes are used to indicate a precise location of any feature on the earth's surface.
Temperature changes with latitudes .At higher latitudes, the Sun's rays are less direct. The farther an area is from the Equator, the lower its temperature. At the poles, the Sun's rays are least direct.Near the equator sun's rays are perpendicular resulting into very high temperatures. Generally, around the world, it gets warmer towards the equator and cooler towards the poles.
Which of the following are analogous features? A. dolphin flippers and squirrel arms B. elephant trunks and pig snouts C. rabbit fur and chicken feathers D. dog tails and monkey tails
Answer:
Explanation:
the answer is rabbit fur and chicken feathers i did that and i got it right i did a quiz i am in middle school 7th grade but here you go the answer
molar mass of 4Fe(OH)2
Answer: The molar mass and molecular weight of 4Fe is 223.38.