Answer:
Hmmmm
Explanation:
Hard,
Rough,
Dusty.
Answer:
This matter is a solid because it has a definite shape and volume and are tightly packed together.
Hope this helps!! <3
At stp,a certain mass of gas occupies a volume of 790cm3. find the temperature at which the gas occupies 1000cm3 amd has a pressure of 726mmHg
The temperature : 332.75 K
Further explanationConditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol.
volume of gas = 790 cm³ = 0.79 L
mol of gas at STP :
[tex]\tt \dfrac{0.79}{22.4}=0.035[/tex]
Use ideal gas :
[tex]\tt PV=nRT[/tex]
P=726 mmHg=0.955 atm
V= 1000 cm³ = 1 L
[tex]\tt T=\dfrac{PV}{nR}\\\\T=\dfrac{0.955\times 1}{0.035\times 0.082}\\\\T=332.75~K[/tex]
Two closed vessels contain chlorine gas at the same conditions of temperature and
pressure, so if the first vessel whose volume = 1.3 L contains 6.7 mol of gas,
what is the number of moles in the second vessel whose volume = 2.33 L ?
The number of moles : 12.01
Further explanationGiven
V₁ = 1.3 L contains 6.7 mol of gas(n₁)
V₂ = 2.33 L
Required
The number of moles
Solution
Avogadro's : at the same temperature and pressure, the ratio of gas volume will be equal to the ratio of gas moles
[tex]\tt \dfrac{V_1}{V_2}=\dfrac{n_1}{n_2}[/tex]
[tex]\tt \dfrac{1.3}{2.33}=\dfrac{6.7}{n_2}\\\\n_2=12.01[/tex]
please help me i will give brain list
Answer:
Give me plz plz plz plz plz plz plz plz plz
Explanation:
Alkane : CnH2n+2
Alkene : CnH2n
Alkyne : CnH2n-2
Therefore C5H10 is an Alkene and C14H30 is an Alkane.
Which properties of plastics are useful in transporting food and drink?
Answer:
mark me brainlist plzzzzzzzzzzzzzz
Explanation:
Answer: In plastic, particles are very much tightly packed ,so food and drink kept in it do not get spoiled easily and its contact with environment gets cut off. So it is useful in transporting food and drink.
1. How are the colors of the rainbow related to white light from the sun?
White light contains only the four secondary colors of the rainbow.
White light does not contain any of the colors of the rainbow.
White light contains only the three primary colors of the rainbow.
White light is made up of all the colors of the rainbow.
Answer:
white light is made up of all colors of the rainbow
Explanation:
The white light of the sun is made up of all the colors of the rainbow. Therefore, option (4) is correct.
How is a rainbow formed?A rainbow can be described as a meteorological phenomenon that is caused by refraction, reflection, and dispersion of light in water results in a spectrum of light appear in the sky. It occurs in the form of a multicolored circular arc in the sky directly opposite the Sun.
Rainbows can be full circles but we normally see only an arc of illuminated droplets above the ground. In a primary rainbow, the arc indicates red on the outer and violet on the inner side. When the light is refracted when entering a water droplet, then reflected inside the back of the droplet and refracted again.
When the light enters a water droplet, it slows down and bends as it goes from air to denser water. The light reflects back the inside of the droplet and when light exits the droplet, it creates a rainbow.
Learn more about rainbow formation, here:
https://brainly.com/question/19863774
#SPJ2
Write the electron configuration, for an element with 30 electrons
Answer:
Zinc (30)= [Ar]3d104s2 (electron configuration of Zinc)
Explanation:
Zinc:
Atomic Mass= 65.39 atomic mass units (amu)
Number of Protons= 30
Number of Neutrons= 35
Number of Electrons= 30
I hope this is what you were asking for!
Explain functional diversity in your own words. Include an example.
Answer:
Functional diversity is a wide range of individuals who have unique selves in one community.
it is a type of mixture that separates on standing
A.) solutions
B.) suspensions
C.)colloids
D.) solute
Answer:
B) Suspensions
More to know - In suspension the size of particles are big as compared to solution Colloids shows Tyndall effect (,for ex milk)What is the electron configuration for 1s2 2s2 2p6 3s2 3p6
What does it mean when someone has done multiple trials? A. They have performed an experiment once and reported their findings. B. They have performed a scientific experiment more than once. C. They have performed an experiment that can only be performed once. D. They have designed an investigation to answer a question.
A. They have performed an experiment once and reported their findings.
Why doesn't glue stick to the inside of the bottle? (Not sure if this is chemistry or not lol)
Answer:
When white glue is in the bottle, there's not enough air inside the bottle to cause the water to evaporate to make the glue sticky. Basically, the bottle holds the glue from the air and keeps the glue from going everywhere.
The molecule BrF3 has how many lone pairs of electrons on the central atom?
Answer:
2
Explanation:
2 lone pairs on the central atom of BrF3.
A chemist has to prepare 750.0 mL of a 0.200 M KNO3(aq) solution. What mass, in grams, of potassium nitrate (formula mass 101.11 g/mol) would they use
Answer:
They would use 15.17 g KNO₃.
Explanation:
To solve this problem first we calculate the number of KNO₃ moles that would be in the solution, multiplying the concentration times the volume:
moles = Concentration * Volume750 mL ⇒ 750 / 1000 = 0.750 L
0.200 M * 0.750 L = 0.150 mol KNO₃Then we convert moles of KNO₃ to grams, using its molar mass:
0.150 mol KNO₃ * 101.11 g/mol = 15.17 g KNO₃
Suppose a species of snake is living in a certain area. Some of the snakes in the population are black and some are orange. Over time, the area changes and the orange snakes have a harder time blending into the environment. This makes it difficult for the orange snakes to catch food.
According to Darwin’s theory of evolution, what will most likely happen to this snake population over time?
Most orange snakes will survive and reproduce, passing on their traits to their offspring. Few black snakes will remain in the population.
Most black snakes will survive and reproduce, passing on their traits to their offspring. The number of orange snakes in the population will not change.
The black snakes will survive and reproduce, passing on their traits to their offspring. Few orange snakes will remain in the population.
Most orange snakes will survive and reproduce, passing on their traits to their offspring. The number of black snakes in the population will not change.
Answer:
The black snakes will survive and reproduce while the orange snakes die out.
Explanation:
The orange snakes will be easier to see by their prey and predators, and therefore will die out while the black snakes thrive because of their camouflage.
Answer:
the black snakes will survive and reproduce, therefore, passing their traits to their offspring, while few orange snakes will remain in the population.
Explanation:
Determine the compound type for the following formulas: C12H22011 Mg(OH)2 H20 Cu3Zn2 Au
Answer:
C12H22O11
✔ covalent
Mg(OH)2
✔ Ionic
H2O
✔ covalent
Cu3Zn2
✔ metallic
Au
✔ metallic
Explanation:
C12H22O11 ✔ covalent
Mg(OH)2 ✔ Ionic
H2O ✔ covalent
Cu3Zn2 ✔ metallic
Au ✔ metallic
Yvette mixed together water with calcium chloride in a beaker. She noticed that the temperature changed from 21oC to 37oC. She also noticed small solids starting to form in the beaker.
What type of change occured? Explain how you know.
Answer:
The temperature changed
How many water molecules would be produced from the dehydration reactions that are associated with making a protein that has a primary structure composed of 152 amino acids
Answer:
How many water molecules would be produced in making a polypeptide that is 72 amino acids long by dehydration reactions? 71; one less than the number
Explanation:
The video is Continental Drift By- Mike
Answer:
Hahah
Explanation:hahah
When barium becomes positively charged, it forms a(n): (2 points)
cation
O anion
proton
O compound
Barium forms cation : Ba²⁺
Further explanationGiven
Barium element
Required
Ion type
Solution
Barium with the symbol Ba is an alkaline earth metal element having the atomic number 56
Electron configuration of Barium: [Xe] 6s2
If we look at this configuration, then Barium will try to achieve stability by removing 2 electrons so that the electron configuration is the same as the noble gas Xenon (Xe)
Because it removes 2 electrons, Barium has the number of protons> the number of electrons so that the charge is positive and forms a cation
For the free radical bromination of 2-methylbutane show all of the mono-bromination isomers and predict their relative abundance. Clearly show the relative amounts by labeling 1 as the most abundant to the least abundant.
Answer:
See explanation
Explanation:
We must take into account the order of stability of free radicals. The order of stability of free radicals is;
Tertiary>secondary>primary> methyl.
As a result of this, structure 1 involving a tertiary radical leads to the more abundant product as shown.
help me please lol....
Answer:
Lithium to form LiBr. An ionic bond is a type of chemical bond that involves a metal and a nonmetal ion.
So your correct answer would be B) Li
what conclusion can we draw from solubility curve
Answer:
Take a look at this question:
https://brainly.in/question/24212862
Explanation:
Answer:
sddddsssdsassssssssss
What keeps the electrons in a atom and the atomic radius of the atom
Answer:
The gain of an electron adds more electrons to the outermost shell which increases the radius because there are now more electrons further away from the nucleus and there are more electrons to pull towards the nucleus so the pull becomes slightly weaker than of the neutral atom and causes an increase in atomic radius.GOOD LESSONS ♡
Answer: In the periodic table, the atomic radius of elements tends to decrease as you move across a row from left to right. The number of protons increases left to right, leading to a greater attractive force in the nucleus.
Explanation: The stronger attraction pulls the electrons closer in, reducing the radius.
What happens when cells are exposed to radioactivity?
Answer:
when cell is exposed to radiation we get brain tumour or cancer.
Answer:
Radioactivity is typically a high-energy wave that passes through cells and causes damage to them. However, there are different types, and they have very different effects on our body.
First, we have alpha particles. They're the biggest of all the types of radiation particles, therefore lacking the energy and speed to penetrate your skin, and typically won't do much damage from outside your body. Inside you body, however, it will wreak havoc on your sensitive tissues, and cause severe damage to cells and DNA. These situations typically happen in unfortunate events where a person inhales or swallows an alpha-emitter.
Next, we have beta particles. These are typically smaller than alpha particles, and hence have more speed. They can penetrate skin and get into our body but are typically less damaging to our inside tissues due to their ionization being weaker than those of alpha particles. They can also typically be stopped by a layer of clothing or a thin sheet of aluminum, but be prepared for some damage if the beta particles get inside your body through inhaling beta-emitters, for example.
Coming up are gamma rays, which are packets of energy like photons that are similar to visible light but have much, much higher energy. These are typically known as the most dangerous of radioactivity, due to their energy that will absolutely rip apart and destroy DNA or cells, and their incredible penetrative energy that will take at least a few meters of dense materials like lead or even concrete to stop.
Finally, we have X-rays. Similar to gamma rays, they are also little photons that act like visible light but have a lower energy than gamma rays, hence having less penetrative power. They are most known for their uses in medicine in X-ray scans to see the insides of a patient, or for their uses in CT scans to diagnose patients.
Hope this helped!
is red sus ????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????
Answer:
yes
Explanation:
very
Answer:
Yes a billion percent
Explanation:
GIVING BRAILIEST FOR ANSWER
Answer:
B
Explanation:
Answer:
c is the answer
Explanation:
One of the most common iron oxides is iron (III) oxide, known as rust. The chemical formula for rust is Fe2O3. Rust is formed when iron reacts with oxygen in moist air. The following chemical equation represents the reaction: 4Fe + 3O2 → 2Fe2O3.
Which best describes a stable binary ionic compound?
A stable binary ionic compound refers to two ions with opposite charges and a net charge of zero.
What is stable binary ionic compound?A compound formed by the combination of two different elements which are present in a fixed ratio by mass are known as binary compounds. The given compounds will be result in the formation of following compounds.
A binary ionic compound contains an ion that is a metal (cation) and an ion that is a nonmetal (anion) so we can conclude that A stable binary ionic compound refers to two ions with opposite charges and a net charge of zero.
Learn more about ionic compound here: https://brainly.com/question/2687188
If I have 3 liters of solute, and 4 liters of solvent how many liters in solution do I have?
Answer:
seven litres i
i.e three litres plus four litres
which element is more magnetic? vanadium or manganese
PLEASE HELP!
will make brainliest
Answer:
Here is a clue
Explanation:
A convenient ion exchange separation particularly designed for the separation of iron and vanadium or mangenese from cobalt has been developed for the determination of iron, cobalt and manganese or vanadium in soft magnetic alloys. After an anion exchange separation of their chloride complexes these elements are determined by a back titration of an excess of EDTA with a standard copper solution using calcein as an indicator under ultraviolet light.
Answer:
I THINK it's vanadium but I'm not 100% sure
Explanation:
Suppose that 10.0 L of Carbon Dioxide gas are produced by this reaction, 4C3H5N3O9 -> 12 CO2 + 10H2O + 6N2 +O2, at a temperature of -5 degrees C, and a pressure of exactly 1 atm. Calculate the mass of nitroglycerin that must have reacted in grams.
The mass of nitroglycerin : 34.52 g
Further explanationReaction
4C₃H₅N₃O₉ ⇒ 12 CO₂ + 10H₂O + 6N₂ +O₂
Volume = 10 L
Temperature = -5°C=268 °K
Pressure = 1 atm
mol of CO₂ (ideal gas) :
[tex]\tt n=\dfrac{PV}{RT}\\\\n=\dfrac{1\times 10}{0.082\times 268}\\\\n=0.455[/tex]
mol ratio C₃H₅N₃O₉ : mol CO₂= 4 : 12, so mol C₃H₅N₃O₉ :
[tex]\tt \dfrac{4}{12}\times 0.455=0.152[/tex]
mass C₃H₅N₃O₉ (MW=227,0865 g/mol):
[tex]\tt 0.152\times 227.0865=\boxed{\bold{34.52~g}}[/tex]
