Answers
Answer:
Explanation:
The melting point of a substance is the temperature at which its melt. The state of a substance is dependent on it's melting temperature. Generally, melting point above 25 °C is a solid.
This means phenol is a solid
Duodecane has melting point below 25 °C hence it is either a liquid or gas. However its boiling point of 216 °C means it would require higher temperature to boil it. Since 25 °C is less than 216 °C it means that it would remain in the liquid state.
Methane has melting point below 25 °C hence it is either a liquid or gas. However its boiling point of -164 °C means it boils easily even at very low temperatures. Since 25 °C is greater than -164 °C it means that it would exist in the gaseous state
Related Questions
Where is the main asteroid belt in the solar system?
Answers
Answer:
It's between Jupiter and Mars.What is the concentration of sodium ions in 0.185 M Na2CO3?
Answers
Answer:
0.370 M
Explanation:
Step 1: Given data
Molar concentration of the sodium carbonate solution: 0.185 M
Step 2: Write the balanced dissociation equation
Sodium carbonate is a strong electrolyte that dissociates according to the following equation.
Na₂CO₃(aq) ⇒ 2 Na⁺(aq) + CO₃²⁻(aq)
Step 3: Calculate the molar concentration of sodium ions
The molar ratio of Na₂CO₃ to Na⁺ is 1:2.
0.185 mol Na₂CO₃/L × 2 mol Na⁺/1 mol Na₂CO₃ = 0.370 mol Na⁺/L
Which element is malleable and ductile?
A. Phosphorus
B. Argon
C. Sodium
D. Chlorine
Can you help me answer all of these I’ll mark brainliest
Answers
Answer:
C.) Sodium
Explanation:
Sodium is an "Alkali Metal"
Body Color is a ___________
Variation
Trait
Feature
Observation
Answers
Newton's Law of Gravity says that any the effect of gravity between two objects depends on what two factors?
Answers
-hope it helps
Answer:
Explanation:
you sack
How many atoms of which elements are represented by the following formula?
H3PO4
Answers
Sorry if I am wrong
Squirrels eat acorns for energy and to grow and repair tissues. How is an acorn used to build squirrel muscle?
The elements in the acorn can be rearranged to make the molecules the squirrel’s body needs
The energy from the acorn warms any damaged muscle and allows it to repair itself and heal
The proteins found in acorns are the same as squirrel muscle proteins, so they attach to muscle cells
Once the acorn has been digested by the squirrel, the carbohydrates are converted to muscle tissue
Answers
Answer:
The elements in the acorn are rearranged to make the molecules the squirrel's body needs. The proteins found in acorns are the same as squirrel muscle proteins, so they attach to muscle cells.
Explanation:
hpoe this helps
I need help ASAP pls the last question
Answers
Answer:When more gas particles enter a container, there is less space for the particles to spread out, and they become compressed. ... The particles exert more force on the interior volume of the container. This force is called pressure.
Explanation:
A balloon with a volume of 0.5L at 293K is cooled to 20K. What is the balloon's new
volume?
Answers
Answer:
0.03 L
Explanation:
Step 1: Given data
Initial volume of the balloon (V₁): 0.5 LInitial temperature of the balloon (T₁): 293 KFinal volume of the balloon (V₂): ?Final temperature of the balloon (T₂): 20 KStep 2: Calculate the final volume of the balloon
The balloon is filled with air. If we assume it behaves as an ideal gas, we can calculate the final volume of the balloon using Charles' law.
V₁/T₁ = V₂/T₂
V₂ = V₁ × T₂/T₁
V₂ = 0.5 L × 20 K/293 K = 0.03 L
summarize what happens to a balls energy when it bounces?
Answers
Answer:
When a ball bounces, it initially gains speed or kinetic energy—the energy of motion. When it reaches Earth, it collides head-on with an incredibly massive object that is, from your perspective, at rest. The ball slows down, deforms temporarily and shoots back up.
Explanation:
I hope this helps.
Answer:
When you hold the ball in the air, the ball has gravitational potential energy. Realizing it will turn the potential energy into kinetic energy. When the ball touches the ground, the kinetic energy will turn into elastic potential energy. When it bounces back up, it will turn into kinetic energy. When the ball is in that position where the ball was being held, it will have gravitational potential energy and repeat the cycle.
Explanation:
Terms to know:
Gravitational potential energy is the energy of an object that possesses because of its position in a gravitational field.
Elastic potential energy is energy stored as a result of applying a force to deform an elastic object.
Kinetic energy is the energy that objects posess due to motion.
as a rollercoaster goes downhiQuestion 2 options:
kinetic energy is converted into potential energy
potential energy is converted into kinetic energy
electrical energy is converted into potential energy
potential energy is converted into electrical energy
ll
Answers
Answer:
b potential hope this is right
g 8. A hydrogen atom is initially a rest and in the ground state. A proton with kinetic energy 1000 eV scatters off the atom. In the process the hydrogen atom is ionized. The kinetic energy of the ionized electron is measured to be 15.2 eV and the kinetic energy of the proton produced from the ionization of hydrogen is 4.3 eV. What would be the final kinetic energy of the projectile proton after the collision
Answers
Answer:
Explanation:
Ionization energy of hydrogen atom is 13.6 eV . This energy will be provided by energetic proton , the kinetic energy of which is 1000 eV. The kinetic energy of ionized electron is 15.2 eV . Kinetic energy of proton produced from from the ionization of hydrogen or the nucleus of the hydrogen atom is 4.3 eV . All these energy must have come from kinetic energy of initial proton.
So kinetic energy of projectile proton after collision
= 1000 - ( 13.6 + 15.2 + 4.3 ) eV.
= 966.9 eV .
What is the rate of reaction
Answers
Answer:
The reaction rate is defined as the amount of substance that is transformed into a given reaction per unit volume and time.
This person is fishing in a small, freshwater body of water. This body of water flows into a larger body of water called a river. What is this small body of freshwater called?
Answers
Answer:
Explanation:
The smallest body of water is the brook, a natural stream of water that is found aboveground and is often called a creek as well. A brook is usually a tributary (a small body of water that naturally flows into a large one) of a river, but this is not always the case.
Answer:
pond
Explanation:
Due to changes in the environment, having lighter-colored fur becomes a
survival advantage in a population of wolves.
What is most likely to happen in the next generation?
Answers
Answer:
There will be more light-colored wolves.
Explanation:
Evolution is based off the survival of those with the most advantages in the wild. Since their light coat gives them a survival advantage, they will reproduce more.
What is weather?
a
The atmospheric conditions over many days, weeks, months, and years.
b
The atmospheric conditions for a particular moment in time.
c
The atmospheric conditions forecasted for the next season.
Answers
What will be the volume occupied by 100 grams of oxygen gas
at STP?
Answers
Answer:70L
Explanation:
The volume occupied by 100g of oxygen gas at STP is 70L.
1 mole of a gas at STP occupies 22.4 L volume.
The same goes for oxygen gas, [tex]O_2[/tex]. 1 mole of [tex]O_2[/tex] occupies 22.4L volume.
Now the molar mass of [tex]O_2[/tex] is = 32g
So the number of moles of [tex]O_2[/tex] in 100g is
n = 100/32
n = 3.125 moles
Volume occupied by 3.125 moles or 100g of [tex]O_2[/tex] is
V = 3.125 × 22.4 L
V = 70 L volume is occupied by 100g of oxygen gas.
Learn more :
https://brainly.com/question/19958403
How many moles are in 568 grams of Gold?
Answers
Which name for an ionic compound is
incorrect?
Chromium(IID fluoride (for CrF3 )
Copper(ID) oxide (for Cuo)
Potassium(I bromide (for KBr)
Answers
Answer:
no se ingles todavía no aprendo a hablar inglés ya si estuvieran en español los respondia
Plz help :’(
Using structural formula, write a balanced equation for the following and name the organic product.
2-methylbutan-1-ol + hot conc H2SO4
Answers
Explanation:
2-metylbutene should be the profuct
I’m stuck on number 2
Answers
Help plzzzzz it's due today ----- Would Shining light on the reaction increase or decrease the reaction rate
Answers
Answer:
increase
Explanation:
Reactions that are initiated by light are called photochemical reactions. The brighter the light, the faster the reaction.
Answer: An increase in temperature typically increases the rate of reaction. An increase in temperature will raise the average kinetic energy of the reactant molecules. Therefore, a greater proportion of molecules will have the minimum energy necessary for an effective collision (Figure. 17.5 “Temperature and Reaction Rate”).
Explanation:
Why do not all rock types contain fossils?
Excessive heat and pressure can destroy fossils.
Fossils can only be created in certain places around the world.
Fossils cannot be created near volcanoes.
Fossils are too large to be found in igneous and metamorphic rocks.
Answers
Answer:
Igneous rocks form from molten rock, and rarely have fossils in them. Metamorphic rocks have been put under great pressure, heated, squashed or stretched, and fossils do not usually survive these extreme conditions. Generally it is only sedimentary rocks that
Explanation:
Hope it helps, some how.
Your welcome :)
What is the Noble gas electron configuration of lead (Pb)?
Answers
When 20g of hydrogen gas will react with 20g of chlorine gas, what is the mass of hydrogen chloride formed?
Answers
Answer:
40g
Explanation:
equation; H2 + Cl2 ---- 2HCl
mole ratio; 1 mole 1 mole 2 moles
before reaction;20g 20g 0g
after reaction; 20g 20g 40g
14) Propane, C3H8, is a hydrocarbon that is commonly used as fuel for cooking.
a) Write a balanced equation for the complete combustion of propane gas, which yields CO2(g) and
H2O(l).
b) If 10.0 g of propane undergo combustion, how many moles of oxygen will be consumed?
c) Assuming that air is 21.0 percent O2 by volume, calculate the volume of air needed to completely
combust 10.0 g of propane at 30oC and 1 atm
d) If the combustion of propane produces 2220 kJ/mole, how much energy is produced when 30.0 g
of propane undergoes complete combustion?
e) If the process described in d) above occurs in a calorimeter containing 8.25 kg of water, calculate
the change in temperature of the water that would be observed.
Answers
ammonia gas occupies a volume of 57.9 L at a pressure of 532.4atm. if the pressure were lowered to 256.8atm,what would the new volume be
Answers
Answer:
683838447745 anmmlllkkkkk
1) How many moles of water does 6.02 x 1023 molecules
represent?
Answers
Answer:
1.00 mol
Explanation:
Step 1: Given data
Molecules of water: 6.02 × 10²³ molecules
Step 2: Calculate the number of moles corresponding to 6.02 × 10²³ molecules of water
In order to convert molecules to moles, we need a conversion factor. In this case, we will use Avogadro's number: there are 6.02 × 10²³ molecules in 1 mole of molecules.
6.02 × 10²³ molecules × 1 mol/6.02 × 10²³ molecules = 1.00 mol (we keep 3 significant figures)
Kinetic energy is energy stored in an object due to its position.
True
Or
False
Answers
Answer:
[tex]\boxed {\boxed {\sf False}}[/tex]
Explanation:
Kinetic energy is the energy of movement or energy at work. An example is a ball rolling down a hill.
Potential energy is stored energy due to the position of an object. For example, a ball resting at the top of a hill.
The question incorrectly described potential energy as kinetic energy. Therefore, the answer is false.
How many protons does isotope of carbon- 14 atom have
Answers
Answer:
Number of protons in Carbon - 14 atom [tex]6[/tex]
Explanation:
The atomic number of carbon 14 atom is [tex]14[/tex]
Number of neutrons in the nucleus of Carbon-14 atom [tex]= 8[/tex]
Atomic number is equal to the sum of neutrons and protons
Number of protons in Carbon - 14 atom [tex]= 14 -8 = 6[/tex]