Answer:
carbon dioxide
it is an exception
hope it helps
What is the chemical formula for the molecule
represented by the model?
CHO
o C4H₂O₂
O C H2O
O C3H802
Answer: it’s the third one
Explanation:
Can anyone explain dipoles in chemistry?
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 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.
Answer:
A
Explanation:
I just know.
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.
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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please help i am striggling with science so bad
True or False: A pendulum when started swinging, will swing for ever without stopping unless you stop it. Be sure to explain your answer.
well, yes it will continue to swing but not forever. it will just a long time but eventually stop. the reason is because of the air resistance which will continue to damp the motion until the bob stops
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
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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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)
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
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
Organize the elements in group 16 - oxygen, polonium, selenium, sulfur, and tellurium - in order of increasing atomic radius.
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
At what temperature would the volume of a gas be equal to 0.796 L, if the gas had a volume of 1180 mL at 417 K? (round to 3 sig figs)
Answer:
281 K
Explanation:
From the question given above, the following data were obtained:
Initial volume (V₁) = 1180 mL
Initial temperature (T₁) = 417 K
Final volume (V₂) = 0.796 L
Final temperature (T₂) =?
Next, we shall convert 0.796 L to millilitres (mL). This can be obtained as follow:
1 L = 1000 mL
Therefore,
0.796 L = 0.796 L × 1000 mL / 1 L
0.796 L = 796 mL
Finally, we shall determine the final temperature as follow:
Initial volume (V₁) = 1180 mL
Initial temperature (T₁) = 417 K
Final volume (V₂) = 796 mL
Final temperature (T₂) =?
V₁/T₁ = V₂/T₂
1180 / 417 = 796/T₂
Cross multiply
1180 × T₂ = 417 × 796
1180 × T₂ = 331932
Divide both side by 1180
T₂ = 331932 / 1180
T₂ = 281 K
Therefore, the final temperature of the of the gas is 281 K
Using the mole ratio, how many moles of NH3 are produced when 0.60 mol of nitrogen reacts with hydrogen in the equation N2 + 3H2 --> 2NH3?
Answer:
1.2 moles of NH3 are produced
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?
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.
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
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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Pls help quickly!
give quick reason why.
Answer:
The Flask 1
Explanation:
Which of these describes a benefit of nuclear fusion?
A. Nuclear fusion uses less power than nuclear fission.
О
B. Waste products have a longer half-life.
O
C. Control rods must be used to prevent runaway chain reactions.
О
D. Hydrogen is more available than uranium-235.
Answer:
D
Explanation:
just took the quiz
The benefit of the nuclear fusion should be considered when the Hydrogen is more available than uranium-235.
What is nuclear fusion?It is the reaction where two or more atomic nuclei should comprise of one or more distinct atomic nuclei and the subatomic particles. Here the difference in mass that lies between the reactants and products should be considered as the manifested at the time of releastion or the energy absorption.
hence, the option d is correct.
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Which series reveals the source of energy for oil? please help ASAP!!! WILL MARK BRAINLEST
oil animals plants sun
oil animals plants chemicals
oil plants animals sun
oil chemicals animals sun
Answer:
B
Explanation:
Oil > Animals > Plants > Chemicals
what is the volume occupied by 112.0 grams of mercury
Answer:
V= 8.235 ml
Explanation:
The man above me copied me from the comments
I did it >:C
How many oxygen molecules are in this compound: H2O
Answer:
1 oxygen molecule is present in H₂O
Explanation:
How to find out?
There's a 2 beside H in H₂O showing that there are '2 atoms of hydrogen'
However there's no number to the right of Oxygen, so it is just 1.
Balance chemical equation Calcium hydroxide + carbon dioxide = calcium carbonate + water
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.
Boiling point of the substance is directly proportional to
Answer:
The boiling point is directly proportional to the surface area which is proportional to the molecular weight.
Explanation:
Write the answer in scientific notation when you multiply 2 x 104 by 3 x 104.
Answer:
6× 10⁸
Explanation:
We need to find the multiplication of 2 x 10⁴ by 3 x 10⁴.
2 x 10⁴ × 3 x 10⁴
= (3 × 2) x 10⁴ x 10⁴
= 6 x 10⁴ x 10⁴
= 6 × 10⁴⁺⁴
= 6× 10⁸
Hence, the required answer is 6× 10⁸.
i just need an explanation :) so the problem was " what is the mass of 5 molecules of water(H2O) , in grams?" my teacher said the answer is 1.50 x 10^-22 but i dont understand why. why is it not 1.50 x 10^24, why is the exponent negative?
Answer:
Explanation:
The exponent is negative because water molecules are absolutely tiny. You can't see a molecule of water on the palm of your hand with your naked eyes, right? If a the mass of a molecule was 1.50 x 10^24, it'd be HUGE... like absolutely massive (possible the size of your city). Molecules are just tiny, tiny particles
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
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!
Is Iridium transparent, translucent, or opaque?
Answer:
It's Opaque because it's a Hard Mattel
Explanation:
(⌐■-■)/━☆ﾟ.*･｡ﾟHave A Good Day
Can someone help me with the first answer ?
Extra points
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.
stoichiometrically when 0.01 kg of CaCO3 is heated to produce CO2, occupied a volume at STP is
a. 2.2414 dm^3
b. 22.414 dm^3
c. 22414 dm^3
d. 224014 dm^3
Answer:
anjsbzhahxbVAbzbsbsbsbsjsjsdp
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?
Answer:0.25M
Explanation:x(.40)=(.20)(.50)
.10/.40=0.25
Please help. Will give brainliest
help in what??????????????????
Magnets are classified based upon how they occur either naturally or man made true or false
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.
HELP ASAP!!!!!!! WHAT IS A GEODYNAMO!?
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.