Step 7: Measure Pressure and Volume with the Book
and 2 kg of Weight
Total the mass on the syringe. Record it in the
correct row of the data table.
kg
Answers
Answer:
1) 2.498
2) 1.27
3) A) 40.5
4) 51.4
Explanation:
Answer: 2.498
Explanation:
I’m taking it rn and got it wrong so y’all could get it right
Related Questions
what is the volume occupied by 112.0 grams of mercury
Answers
Answer:
V= 8.235 ml
Explanation:
The man above me copied me from the comments
I did it >:C
Which of the following are decomposition reactions? ch4 (g) + o2 (g) → co2 (g) + h2o (l) cao (s) + co2 (g) → caco3 (s) mg (s) + o2 (g) → mgo (s) pbco3 (s) → pbo (s) + co2 (g)
Answers
Answer:
I cant really see the individual problems very well but i hope this helps
Explanation:
Decomposition = one thing -> 2 or more things
Synthesis= 2 or more things -> 1 thing
Organize the elements in group 16 - oxygen, polonium, selenium, sulfur, and tellurium - in order of increasing atomic radius.
Answers
Answer:
Polonium > Tellurium > Selenium> Sulfur > Oxygen
Explanation:
In the periodic table, the trend of the atomic radius is; It increases down the group.
The elements when arranged in increasing atomic radius is given as;
Polonium > Tellurium > Selenium> Sulfur > Oxygen
Magnets are classified based upon how they occur either naturally or man made true or false
Answers
Answer:
True
Explanation:
Permanent artificial, temporary artificial and natural. They are classified by the way in which they have achieved magnetism and by how long they remain magnetic.
If you build an atom with 6 protons, 7 neutrons, and 7 electrons, what element
have you created?
Answers
Shshdhhdhdhd
First off, you cannot "build" an atom because doing so would throw the Law of Conservation of Matter out the window, and we don't want to do that.
However, I get what you're asking... 6 protons, 7 electrons and 7 neutrons would make carbon-13.
Can anyone explain dipoles in chemistry?
Answers
Answer:
See explanation
Explanation:
A dipole refers to a bond in which its two ends have opposite charges. A dipole results from a large difference in electronegativity between two atoms in a bond.
For instance, consider the bond between hydrogen and chlorine in HCl. The electronegativity of hydrogen is 2.2 while that of chlorine is 3.16. The significant electronegativity difference between the two atoms leads to a charge separation.
A partial positive charge appears on the atom that is less electronegative (hydrogen) while a negative charge appears on the more electronegative atom (chlorine).
This charge separation occurs because the shared electrons of the bond are more closely attracted to chlorine making it partially negative compared to hydrogen. A dipole moment now exists in the H-Cl bond hence the molecule is said to have a dipole.
how many moles of sodium will react with water to produce 2.0 mol of hydrogen in the following reaction?
2Na(s) + 2H20(1) - 2NaOH(aq) + H2(g)
Answers
Answer: 4.0 moles of sodium will react with water to produce 2.0 mol of hydrogen
Explanation:
The balanced chemical equation is:
[tex]2Na(s)+2H_2O(l)\rightarrow 2NaOH(aq)+H_2(g)[/tex]
According to stoichiometry :
1 mole of [tex]H_2[/tex] is produced by = 2 moles of [tex]Na[/tex]
Thus 2.0 moles of [tex]H_2[/tex] are produced by =[tex]\frac{2}{1}\times 2.0=4.0moles[/tex] of [tex]Na[/tex]
Thus 4.0 moles of sodium will react with water to produce 2.0 mol of hydrogen
A 20-milliliter sample of a gas is at 546 K and has a pressure of 6.0 atmospheres. If the temperature is changed to 273 K and the pressure to 2.0 atmospheres, the new volume of the gas
Answers
Answer: 30mL
Explanation:
A 20-milliliter sample of a gas is at 546 K and has a pressure of 6.0 atmospheres. If the temperature is changed to 273 K and the pressure to 2.0 atmospheres, the new volume of the gas is 30mL.
What is volume?Because gases occupy their containers, overall volume is identical to the container's internal volume. Liquids are typically measured using containers in which the volume or internal form of the container is indicated.
The volume of typical solid forms may be calculated using formulae. Another way to calculate the capacity of a solid would be to calculate how so much liquid something displaces.
P₁×V₁/T₁=P₂×V₂/T₂
substituting all the given values in the above equation, we get
6.0×20/ 546=2.0×V₂/ 273
V₂= 30mL
Therefore, 30mL is the final volume.
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Please help me ASAP!!!!!!!!!
Temperature of Gas (degrees C)
Near 0 degrees C 3°
Near 20 degrees C 21°
Near 40 degrees C 40°
Near 60 degrees C 57°
Near 80 degrees C 82°
Near 100 degrees C 98°
Height of the column of gas (cm)
5.7 cm
6.2 cm
6.7 cm
6.9 cm
7.4 cm
7.8 cm
Temperature of gas (K)
276 k
294 k
313 k
330 k
355 k
371 k
Volume of gas (cm^3)
0.72 cm
0.78 cm
0.84 cm
0.87cm
0.93 cm
0.98 cm
Ratio V/T (cm^3/K)
0.72/276
0.78/294
0.84/313
0.87/330
0.93/355
0.98/371
Graph!
1. Make a scatterplot of temperature (K) vs. volume (cm^3)
2. Use a regression calculator (Excel works fine) to determine the equation of the line of best fit for the scatterplot.
3. Determine R. A value close to 0 indicates that there is not a linear relationship. A value near +1 indicates that the data is strongly linear.
4. If the Volume-intercept is close to 0, volume and temperature (in K) are proportional.
Answers
Explanation:
chemical analysis of a compound shows that it contains 0.99g lead ,0.154g sulfur and 0.306g oxygen. what is the empirical formula of the compound.
Chemical analysis of a compound shows that it contains 0.99g lead ,0.154g sulfur and 0.306g oxygen. what is the empirical formula of the compound.
What is gas law?This can be solved by using one of the different gas laws. This is shown below:
PV / T
Given:
P1 = 0.98 atm
V1 = 212 cm^3
T1 = 293 K
P2 = ?
V2 = 196 cm^3
T2 = 308K
Substituting to the relation:
P1V1/T1 = P2V2/T2
(0.98 * 212)/293 = (P2 * 196)/308
P2 = 1.114 atm
For this we use general equation for gases. Our variables represent:
p- pressure
v-volume
t- temperature
P1V1/T1 = P2V2/T2
in this equation we know:
P1,V1 and T1, T2 and V2.
We have one equation and 1 unknown variable.
P2 = T2P1V1/T1V2 = 1.1atm
We know that when two lines cross each other forming four angles, such that, each pair of opposite angles are equal to each other. This pair of angles are known as Vertical opposite angles.
Similarly, ∠KML = ∠JML = 25°.
Therefore, Chemical analysis of a compound shows that it contains 0.99g lead ,0.154g sulfur and 0.306g oxygen. what is the empirical formula of the compound.
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do i look phat in this dress?
Answers
Answer:
Very!
Explanation:
Very phat!
How is a planet different from a moon? (2 points)
a
A planet orbits around the sun, while a moon orbits around a planet.
b
A planet orbits around a moon, while a moon orbits around the sun.
c
A planet is dull, while a moon is bright and shiny with a bright tail behind it.
d
A planet is made of rock, while a moon is made of ice, rock, gas, and dust.
Answers
Answer:
A
Explanation:
I just know.
What is the concentration of a solution of HBr if 0.40 L is neutralized by 0.20 L of 0.50M solution of LiOH?
Answers
Answer:0.25M
Explanation:x(.40)=(.20)(.50)
.10/.40=0.25
fast slow , mixed ?
Answers
Answer:
Explanation:
Fast
Answer:
Red light has long and Fast waves.
The picture below shows xylem and phloem vessels, which are tube-
like structures in a plant's roots and stems. Phloem is adapted for
transporting the glucose made during photosynthesis to the roots and
stems.
Phloem
Xylem } Vascular
stem
τρος
Xylem
Phloem
Which function is xylem specifically adapted to perform in plants?
(7.12A)
A
It helps prevent wer loss
B
It transports water from the roots to the leaves
с
It exchanges gases with the atmosphere
D
It captures sunlight for photosynthesis
Answers
Answer:
B
Explanation:
it transports water from roots to the leafs
When a musician blows into a trumpet, a sound wave is formed that moves in the same direction as the musician's breath. This is an example of a
Answers
Answer:
Longitudinal wave
Explanation:
This is a longitudinal wave. Air is known to travel through a longitudinal wave. A wave is a disturbance that goes through a medium. As this musician blows into his trumpet, a vibration is formed, which moves in the direction as where the wave is coming from. Air moves in parallel direction as the wave
This is an example of a LONGITUDINAL WAVE.
A longitudinal wave is a type of wave that occurs when the vibration is parallel to the direction of the wave.The sound when it moves through the air compresses the gas (air) in the direction of travel of the wave.The air particles of a longitudinal wave vibrate in a parallel way to the direction of the wave propagation.In conclusion, this is an example of a LONGITUDINAL WAVE.
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Pls help quickly!
give quick reason why.
Answers
Answer:
The Flask 1
Explanation:
QUESTION 8
DOK 4
Watch later Share
Imagine that an atom of Fluorine (F) can bond with one
of the following atoms. Which one do you think it is
most likely to bond with? Why?
Lithium (Li)
Beryllium (Be)
Boron (B)
Carbon (C)
For more videos,
check out:
Click to answer
ne
T
www.video
chemistry
textbook.com
Youlube
SAVE DRAFT
SUBMIT
13:22 / 16:52
СС
Answers
Answer:
Li
Explanation:
F is a strongest electronegative element and it will combine with an element with low electronegativity. From the list provided, the element is Li.
What is a pollinator?
an animal that transfers pollen from flower to flower
a colorful flower that attracts insects
an insect that makes pollen
a flower that produces fruit for animals to eat
Answers
Answer:
an animal that transfers pollen from flower to flower
Explanation:
think of a bee, bees move from flowers to flowers dropping pollen places and then it helps the plants grow.
Answer:
an animal that transfers pollen from flower to flower
Explanation:
Have a good day or night!
HELP ASAP!!!!!!! WHAT IS A GEODYNAMO!?
Answers
Answer:
In physics, the dynamo theory proposes a mechanism by which a celestial body such as Earth or a star generates a magnetic field. The dynamo theory describes the process through which a rotating, convecting, and electrically conducting fluid can maintain a magnetic field over astronomical time scales.
Answer:
The mechanism responsible for the generation of the Earth's magnetic field caused by convection and conduction currents in the fluid core.
please help
Differentiate between the three systems of rearing pigs.
Answers
this is ur answer
plzzz mark me as brainliest
What is the chemical formula for the molecule
represented by the model?
CHO
o C4H₂O₂
O C H2O
O C3H802
Answers
Answer: it’s the third one
Explanation:
Balance the equation by putting the correct number in front of each compound. You can work this out mathematically or by drawing pictures on a piece of paper like the videos.
NH3 --> H2 + N2 ammonia dissolving
Answers
Answer:
2NH3 --> 3H2 + N2
Explanation:
It's hard to explain how I got these coefficients but I recommend watching Tyler DeWitt on Youttube. He explains tons of chemistry concepts in an easy and clear way. I always watch his videos when I don't understand something.
I would type in "How to balance chemical equation" by Tyler DeWitt
Can someone help me with the first answer ?
Extra points
Answers
Explanation:
I'm pretty sure it's; because of the invention of the microscope, scientists were able to work together to develop the cell theory.
CAN SOMEONE PLEASE SEND ME A GOOD PICTURE OF A WATER CYCLE WITH ALL THE THINGS THAT HAPPEN IN A WATER CYCLE PLS HELP ME FAST!!!(because I need to draw it for class and I can find good pics, btw they didn’t have the subject science so yea)
Answers
Here you go I hope this helps
When describing a solution, which of the following statements are true:
A) one substance is dissolved into another C) requires chemical separation
B) heterogeneous D) always involves the combination of a solid with a
liquid. E) All of these descriptions are true
Answers
Answer:
E) All of these descriptions are true
Which of the following will increase the rate of a chemical reaction?
OA.
decreasing the experimental temperature
OB.
increasing the surface area of the reactants
OC.
decreasing the concentration of the reactants
D.
all of these
Answers
Answer:
answer is b
Explanation:
A mixture of PCl5(g), PCl3(g), and Cl2(g) is in a 1.00 L reaction vessel. The total pressure of the reaction system is 1.40 atm at equilibrium. Then the volume of the reaction vessel is reduced from 1.00 L to 0.50 L and equilibrium is re-established at constant temperature. What is the total pressure of the system at this point?
Answers
Answer:
The total pressure immediately after the volume reduction is 2.8 atmospheres
Explanation:
The question parameters are as follows;
The initial volume of the reaction vessel, V₁ = 1.00 L
The initial pressure of the reaction system, P₁ = 1.40 atm
The final volume of the reaction system, V₂ = 0.50 L
With the assumption that the gas mixture behaves as an ideal gas, and the temperature is constant, by Boyle's law we have;
P₁·V₁ = P₂·V₂
Where;
P₁ = The initial pressure in the reaction vessel
V₁ = The initial volume in the reaction vessel
P₂ = The total final pressure in the reaction vessel after the reduction in the vessel volume
V₂ = The final volume in the reaction vessel
∴ P₂ = P₁·V₁/V₂
From which we have;
P₂ = 1.40 atm × 1.00 L/(0.50 L) = 2.8 atm
The total final pressure in the reaction vessel, P₂ = 2.8 atm.
Using the balanced equation: 2 KCIO3 -> 2 KCI + 3 O2 How many moles of
oxygen are produced when 6.7 moles of KCIO3 decompose completely?*
6.7 mol 1.0 mol 4.5 mol 10.1 mol
Answers
What is the sum of the coefficients of the balanced equation for:
Pb(NO3)2 + Al2(SO4)3 ----> Pb2SO4 + Al(NO3)3
Answers
Answer:
3 Pb(NO3)2 + Al2(SO4)3 = 2 Al(NO3)3 + 3 PbSO4
Explanation:
I think your equation is incorrect? This is balanced and the sum of coefficients is 9.
Balance chemical equation Calcium hydroxide + carbon dioxide = calcium carbonate + water
Answers
Answer:
yaeh
Explanation:
a)Ca(OH)
2
+CO
2
⟶CaCO
3
+H
2
O
No. of atoms:Ca−1;O−4;H−2;C−1
b)Zn+AgNO
3
⟶ZnNO
3
+Ag
No. of atoms:Zn−1;Ag−1;N−1;O−3.