Answer:
The chemical changes are as follows:
Explanation:
Growth of a plant Rusting of ironCooking of food Digestion of food Burning of a candle.
-TheUnknownScientist 72
Explanation:
a, b, d, e and g
hope it's helpful
1) Kinetic energy is the energy an object has due to its
Position
Weight
Mass
Gravity
Motion
Answer:
the answer to the answer above is motion
URGENTTTTTTTT
What is the mass of 10.00mL of water at 33℃?
Answer:
9.93712g
Explanation:
You have 10mL of water at 33 degrees, so you want to look at the density of water at 33 degrees. Then you multiply that density (.993712) by 10 and the mL cancel out and you are left with 9.93712g.
Hope this helps!
Which substance dissolves most readily in gasoline?
A)CH4
B) NaOH
C) NaBr
D) HCl
Answer:
A. CH4
Explanation:
barium hydroxide is insoluble in water. do you do any reaction that produces this compound in this experiment. If so, write down the equation for this reaction.
You are using your hot air balloon to travel. At constant pressure, you decrease the temperature of the gas by turning down the flame. What do you expect to happen to the volume of the 400 L balloon as the temperature decreases
Considering the Charles's Law, if you decrease the temperature of the gas by turning down the flame, the volume of the 400 L ballon decreases.
Charles's LawCharles's Law consists of the relationship between the volume and temperature of a certain amount of ideal gas, which is maintained at a constant pressure.
For a certain amount of gas at a constant pressure, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases because the temperature is directly related to the energy of movement of the gas molecules.
That is, the volume is directly proportional to the temperature of the gas.
Volume of the balloonIn this case, taking into account the Charles's Law, at constant pressure, if you decrease the temperature of the gas by turning down the flame, the volume of the 400 L ballon decreases.
Learn more about Charles's Law:
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Name three elements that are named after people.
Answer:
Bohrium (Niels Bohr)
Curium (Marie and Pierre Curie)
Einsteinium (Albert Einstein
metals are conducter of electricity how can you prove this statement? Describe
Answer:
if we connect bulb to the metal wire and connect wire's end through the battery then, the bulb will glow which shows that metal is good conductor of heat and electricity. Now if we connect bulb through a wooden scale, then bulb will not glow So,this shows it is bad conductor of heat and electricity.
If Johnathan runs 800 meters in 200 seconds, and Abby runs 200 meters in 40 seconds, who is
faster and by how much?
Answer:
Explanation:
Solution,
For Johnathan
Distance(d)=800m
Time(t)=200sec
Now,
Speed=d/t=800/200=4m/s
For Abby
Distance(d)=200m
Time(t)=40sec
Now,
Speed=d/t=200/40=5m/s
Here, Abby is faster by 1m/s.
Chemistry mixes 108 g of O2, with 232 L of C3Hg at STP. How many grams of H2O will be produced? The balanced equation for this reaction is:
CH, +5 02 + 3 CO2 + 4H2O
Need help soon as possible
Answer:
I'm sorry if this isn't right but I think its Bromine? Lithium Bromide is an ionic bond, but the others don't bond with Lithium. Let me know if I am wrong.
Explanation:
hi there, giving brainliest to best answer. no spammers
Answer:
D. Earth's northern hemisphere is tilted toward the Sun
Explanation:
You can see in the picture above that the northern hemisphere is past the perpendicular to orbit line to the right.
three forms of radiation are also called ionizing radiation
Answer:
Alpha Particle, Beta Particles and Gamma Rays
Explanation:
a molecule is the ___________particle of a substance that can normally exist independenty
Answer:
a molecule is the smallest particle of a substance that can normally exist independenty
Two objects in the solar system are described below.
Object 1: This object revolves around the sun and is made of ice, gas, rock and dust
Object 2: This object revolves around a planet and is made of rock
Which of the following is correct about the two objects?
(A) Object 1 is a comet, and Object 2 is a moon.
(B) Object 1 is a moon, and Object 2 is a star.
(C) Object 1 is an asteroid, and Object 2 is a planet.
(D) Object 1 is a star, and Object 2 is a comet.
Answer:
The correct answer is (A)
Explanation:
Comet are frozen pieces made out of dust, rock, and ices. Moon has a thick rocky crust.
You have a 2.0 L balloon filled with air at a temperature of 273 K.
When the volume of the balloon increases to 2.4 L, what is the new temperature?
240 K
323 K
655 K
900 K
Apply Charles law
[tex]\\ \rm\Rrightarrow V_1T_2=V_2T_1[/tex]
[tex]\\ \rm\Rrightarrow 2T_2=2.4(273)[/tex]
[tex]\\ \rm\Rrightarrow 2T_2=655.2[/tex]
[tex]\\ \rm\Rrightarrow T_2=\dfrac{655.2}{2}[/tex]
[tex]\\ \rm\Rrightarrow T_2=327.6K[/tex]
Balance the following chemical equation (if necessary):
C6H6 (I) + O2(g) → H2O(g) + CO2 (g)
[tex]\\ \sf\longmapsto 2C_6H_6+15O_2\longrightarrow 6H_2O+12CO_2[/tex]
On reactant side
C=12H=12O=30On products side
C=13O=30H=12Hence balanced
Give an example of chemical equilibrium you have come across into your day-to-day life. Explain how it meets the definition of equilibrium.
Calcium oxide reacts with carbon with the following chemical reaction.
CaO + 3C → CaC2 + CO
Which statements about CO are correct?
CO will have similar chemical properties to CaC2.
CO will have similar chemical properties to CaO.
CO is likely to have different chemical properties than CaO.
CO is likely to have different chemical properties than C.
Answer:
2, 3, 4 I THIK
Explanation:
The true statement about is CO is likely to have different chemical properties than CaO.
Option (3) is correct.
In the given chemical reaction, Calcium oxide (CaO) reacts with carbon (C) to form calcium carbide (CaC₂) and carbon monoxide (CO). Let's analyze the chemical properties of CO and compare them with CaO, CaC₂, and C.
1. CO vs. CaO: Carbon monoxide (CO) is an entirely different compound from calcium oxide (CaO). CO is a colorless, odorless gas, while CaO is a solid compound. Their chemical properties will differ significantly.
2. CO vs. CaC₂: Carbon monoxide (CO) and calcium carbide (CaC₂) have distinct chemical properties. CaC₂ is a solid, and CO is a gas. Their reactivity, physical properties, and applications are dissimilar.
3. CO vs. C: Carbon monoxide (CO) and carbon (C) are related, but they are different chemical species. CO is an oxide of carbon, whereas C represents the pure element. Their bonding, reactivity, and uses are different.
Therefore, CO is likely to have different chemical properties than CaO, CaC₂, and C.
To learn more about Calcium oxide here
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What power of ten is one light year?
Answer:
9.46x10^12 kilomiters is your answer
Explanation:
write down the value to show the mass of water produced when 168g of sodium hydrogen carbonate breaks down completely
breakfast is that carry blood away from the heart are called
A gamma ray has a frequency of 2.88 x 1021 Hz. What does this mean?
Answer:
A gamma ray has a frequency of 2.88 x 10^21 Hz. What does this mean? It is how fast the wavelength is moving and is the number of how many pass a certain in a second. How does light emitted from a neon sign differ from light from the sun? Neon light only emits certain colors while sunlight emits all colors.
Explanation:
A gamma ray has a frequency of 2.88 x 10^21 Hz. What does this mean? It is how fast the wavelength is moving and is the number of how many pass a certain in a second. How does light emitted from a neon sign differ from light from the sun?
Of the bonds listed below the weakest bond is _______ and the strongest is ________. A strong bond is a (stable / unstable) bond
2(H—C ≡ C—H) + 5(O = O) → 4 (O—C—O) + 2 (H—O—H)
839 kJ/mol C ≡ C # of bonds ______ (product / reactant) side Energy:_____
495 kJ/mo O = O # of bonds ______ (product / reactant) side Energy:_____
413 kJ/mo C—H # of bonds ______ (product / reactant) side Energy:_____
I need help with this. I am a Learning Coach and I don't understand.
Based on the data given of the bonds listed below, the weakest bond is C-H and the strongest bond is C ≡ C.
A strong bond is a stable bond.
Which of the bonds listed is the weakest and which is the strongest?The strength of a bond is proportional to the amount of energy required to break or form the bond.
A weak bond will require less energy to form than a strong bond.
A weak bond is unstable while a strong bond is stable.
Data provided:
839 kJ/mol C ≡ C
495 kJ/mo O = O
413 kJ/mo C—H
From the data given of the bonds listed below, the weakest bond is C-H and the strongest bond is C ≡ C.
A strong bond is a stable bond.
Learn more about energy of bonds at: https://brainly.com/question/25086481
Question 2 of 10
Which of the following describes a chemical reaction?
A. Molecules interact without bonds breaking.
B. Substances change shape but not properties.
C. Atoms in substances react with each other.
D. Molecules mix without interacting.
SUBMIT
write the action of monohydroxy benzene with aqueous bromine
The reaction yields the product compound 2,4,5-tribromophenol.
Bromination of monohydroxy benzeneBromination is an organic reaction in which aqueous bromine is made to react with another compound so as to introduce bromine into the molecule.
When we carry out the bromination of monohydroxy benzene, we obtain the compound 2,4,5-tribromophenol.
Learn more about benzene: https://brainly.com/question/14525517
What happens when a glass of water is set in the sun until the water
evaporates?
A. Activation energy increases.
B. Enthalpy decreases.
C. Condensation increases.
D. Entropy increases.
Answer:
D is the answer
Explanation:
If 1200 J of energy is lost by a metal nail as it cools in a bucket of water, how much energy is gained by the water?
Heat lost (metal)=Heat gained (water)
Q in = Q out
So energy gained by the water = 1200 J
what is going on in this world?
Biden and this virus is what’s going on
A cat goes to the vet and weighs 8.92 pounds. How many grams does this represent? (1 pound = 454 grams) _________ g
Give your answer in scientific notation
Answer:
4049.68 or 3632
Explanation:
454x8.92=4049.68 but if thats incorrect then its 3632 cause it says 1 pound=454 grams so 8x454=3632.
Is SiO2 London Dispersion, Dipole-Dipole, or Hydrogen Bonding?
Answer: SiO2 has more electrons and stronger London dispersion forces.
SiO2 is non-polar and has covalent bonds.What is linear expansion
Answer:
Thermal expansion is the tendency of matter to change its shape, area, volume, and density in response to a change in temperature, usually not including phase transitions. Temperature is a monotonic function of the average molecular kinetic energy of a substance.
