Explanation:
Rain is produced by two natural processes, i.e., evaporation and condensation. The water from water bodies evaporates into the air and gets condensed in the form of tiny droplets. Enormous droplets of water appear in the form of clouds. When the droplets become big and heavy, they fall down in the form of rain.
i need help in chemistry i will cash app money just please send me ur number i am going to fail my class
Answer:
Woah don't cash app whats the question
How the size of the sun compares to the sizes of the other stars
Answer:
the sun is pretty smol compared to others
Explanation:
what is the mass number of an atom which contains 21 electrons,21 protons and 24 neutrons
Answer:
The atomic mass number is 45.
Hope this helps
someone help ,, I'll give brainliest lol .
Answer:
D.
Explanation:
Hopefully this helps
Answer:
A
Explanation:
I think the correct answer is A. Online it says that oxidation can be defined in terms of the adding or removing oxygen to a compound/Oxidation is the gain of oxygen.
hey guys, i found this marble outside and covered in grease. so i took it in to wash it. can you please tell me what it is made of...plz
Answer:
I can't see the marble so I don't know
Which statement describes a way in which a mole is useful
Answer:
A mole in chemistry is defined as the number or quantity of a chemical substance that consists of as many fundamental entities such as atoms, molecules, and ions. Therefore, the statement that best describes a mole is that, it is used for directly comparing the amounts of substances.
Explanation:
I found this hope it helps!! (read and try your best)
Th statement which describes a way in which moles is useful is that it can be used to keep track of chemical amounts.
What is mole?Mole is unit to calculate the amount of chemical substances and it is represented as:
n = W/M, where
W = given mass
M = molar mass
It can be useful in chemical reactions to calculate the relative amount of species present before and after the reaction. In one mole of substance 6.022 × 10²³ atoms of that substance is present.
Hence, option (A) is correct.
To know more about Mole, visit the below link:
https://brainly.com/question/1464305
The particles of a liquid are able to move around each other. What property of a liquid does this behavior create?
Answer:
Behaviour is in the form of surface tension.
Explanation:
The particles of the liquid are quite close to each other and move with the random movement around the containers. These particles tend to move rapidly in all directions due to the shorter distances between particles. The property of the liquids to flow is their viscosity. Described as the quality of the liquid to flow. They have no fixed shape, as they are made by tiny vibrating particles that are held together by intermolecular bonds. liquids don't disperse like the gases they have surface tension.can someone help me with these?
Answer: 6. The pressure inside the baloon will be 6.8 atm
7. The final volume is 21.5L at tempearture of 388 K.
Explanation:
Boyle's Law: This law states that pressure is inversely proportional to the volume of the gas at constant temperature and number of moles.
[tex]P\propto \frac{1}{V}[/tex] (At constant temperature and number of moles)
[tex]P_1V_1=P_2V_2[/tex]
where,
[tex]P_1[/tex] = initial pressure of gas = 3.5 atm
= final pressure of gas = ?
= initial volume of gas = 32 L
[tex]V_2[/tex] = final volume of gas = 19.3 L
[tex]3.5\times 32=P_2\times 19.3[/tex]
[tex]P_2=5.8atm[/tex]
Therefore, the pressure inside the baloon will be 5.8 atm
7. To calculate the final volume of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.
Mathematically,
[tex]\frac{V_1}{T_1}=\frac{V_2}{T_2}[/tex]
where,
[tex]V_1\text{ and }T_1[/tex] are the initial volume and temperature of the gas.
[tex]V_2\text{ and }T_2[/tex] are the final volume and temperature of the gas.
We are given:
[tex]V_1=13L\\T_1=235K\\V_2=?\\T_2=388K[/tex]
Putting values in above equation, we get:
[tex]\frac{13L}{235K}=\frac{V_2}{388K}\\\\V_2=21.5L[/tex]
Thus it will occupy 21.5L at tempearture of 388 K.
What is the limiting reagent when 1.5 moles of nitrogen react with 6 moles of hydrogen?
N2(g) + 3H2(g) --> 2NH3(g)
pls show work
Answer:
Balance the chemical equation for the chemical reaction.
Convert the given information into moles.
Use stoichiometry for each individual reactant to find the mass of product produced.
Explanation:
Which pod would have a greater change in velocity if you exerted the same strength force, a less massive pod or a more massive pod
What are substances that cannot be broken down into simpler substances?
a. elements
b.compounds
c. molecules
d.protons
Answer:
Elements
Explanation:
Elements cannot be broken down into a simpler substance
Need help Please ASAP
10
Which type of species can respond better to changes in the environment?
A generalized species
B specialized species
Cendangered species
D extinct species
Answer:
Endangered species .............................
Plants grow in many different shapes and sizes. Much of their shape depends on an internal structure that is composed of carbon-containing molecules such as cellulose and lignin. Plants that have a strong internal structure can grow larger than other plants because their structure can support their size.
Plants obtain the majority of the carbon necessary for building these structural molecules from —
F
air
G
microorganisms
H
soil
J
water
Answer:
F=Air
Explanation:
Because I took the test hope it helps
The density of hexane is 0.660 g/mL. What is the volume of a 57g sample of hexane?
Which of the following is NOT a molecular formula?
F2
Na2SO4
H2O
CO2
Answer:
Hello there! :) All of these are molecular formulas but F2.
Explanation:
F2 goes by the name flourine and is not F2 in it's chemical makeup. Na2SO4 is also called Sodium Sulfate and is a molecular formula. Everyone knows what H2O is, the molecular formula for water and lastly CO2 is carbon dioxide. Hope this helps!
What causes adaptions to occur ?
Factors that influence general adaptation syndrome include that of a person’s health, nutrition, sex, ages, race, socioeconomic status, and genetics. These are factors that are either can precipitate a different reaction, while others are modifiable and unmodifiable traits.
In biology, adaptation has 3 related meanings. Firstly, it is the dynamic evolutionary process that fits organisms to their environment, enhancing their evolutionary fitness. Secondly, it is a state reached by the population during that process. Thirdly, it is a phenotypic trait or adaptive trait, with a functional role in each organism, that is maintained and has evolved through natural selection. Historically, adaptation has been described from the time of the ancient Greek philosophers such as Empedocles and Aristotle. In 18th and 19th century natural theology, adaptation was taken as evidence for the existence of a deity. Charles Darwin proposed instead that it was explained by natural selection. Adaptation is related to biological fitness, which governs the rate of evolution as measured by a change in gene frequencies. Often, two or more species co-adapt and co-evolve as they develop adaptations that interlock with those of the other species, such as with flowering plants and pollinating insects. In mimicry, species evolve to resemble other species; in Müllerian mimicry, this is a mutually beneficial co-evolution as each of a group of strongly defended species (such as wasps able to sting) come to advertise their defenses in the same way. Features evolved for one purpose may be co-opted for a different one, as when the insulating feathers of dinosaurs were co-opted for bird flight. Adaptation is a major topic in the philosophy of biology, as it concerns function and purpose (teleology). Some biologists try to avoid terms that imply purpose in adaptation, not least because it suggests a deity's intentions, but others note that adaptation is necessarily purposeful.
Two students are having a tug of war. The flag on the rope begins at point Y. team A pulls to the left with force of 120 N. Team B pulls to the right with force of 160 N. Based on these forces, which letter shows the likely movement of the flag?
Choices:
A: W
B: X
C: Y
D: Z
(Please help!!) 20 points
Dose anyone understand this I need help can anyone help me on this please !
newtons forst law of motion is also known as___?
Answer:
law of inertia
Explanation:
Which one of the compounds below is most likely to be ionic?
A-aluminum chloride
B-nitrogen dioxide
C-carbon tetrachloride
D-chlorine dioxide
Answer:
A
Explanation:
pls mark me brainliest right
Name two things that affect the rate of weathering and why this happens ASAP
Answer:
Rain and temperature.
Explanation:
These cause geological landforms to erode/weather.
Rain is water that slowly chips away land-forms.
If 1.0 mole of C8H18 are available to completely react
with enough O2, how many moles of H20 can be produced?
Answer: 1 mol C8H18 produces 9 mol H2O
Explanation: reaction : C8H18 + 12.5 O2 ⇒ 8 CO2 + 9 H2O
Identifying Variables in the Effect of Type of Material on
Absorption Experiment
Answer the questions using the drop-down menus.
Which is the independent variable in this experiment?
Which is the dependent variable in this experiment?
Which is a controlled variable in this experiment?
In Absorption Experiment,
Water location is the independent variable in this experiment.
Room Temperature in the material is dependent variable in this experiment.
Type of a material is a controlled variable in this experiment.
What is Absorption Experiment ?Absorption experiment is nothing but the experiment of absorption of water in a material (sponge).
Experiment requires vessel, water and sponge.
Processor - take a vessel, pour water into it and dip sponge. take out the sponge. After taking of out sponge, water appears to be decreased from the vessel and sponge gets heavier. When we squeeze the the sponge, water drops down. It is because of water is absorbed by the spouge.
There are number of pores in the sponge, which absorbs the water.
Water location is the independent variable.
In this experiment Room Temperature is dependent variable in this experiment rate of absorption increases with increase in the temperature. decrease in the temperature cause to solidify the water. Type of a material is a controlled variable, we can change type of the material.
To know more about variables :
brainly.com/question/14289293
#SPJ7.
What are the % composition for Carbon and Hydrogen in C3H6?
Answer:
Carbon=about 85.13%
Hydrogen=about 14.26%
Explanation:
Percent composition= (molar mass of element x amount of it)/Molar mass x100
C= 12x3/42.08 x100=about 85.13
H=6x1/42.08 =about 14.26
What caused the deer population to grow early on?
A.) An abnormally cold winter caused offspring to die.
B.) A drought caused there to be less food and water available to the deer.
C.)The number of births was equal to the number of deaths in the deer population.
D.) The deer had a better food source so they had 2-3 fawns per year instead of 1 fawn
per year.
Answer:
i think it is C but not 100% sure.
Explanation:
Answer:
D) The deer had a better food source so they had 2-3 fawns per year instead of 1 fawn per year.
The other options show that the populations actually decreased, due to cold temperatures and droughts.
Let me know if this helps!
What is a chemical equation, and
how do scientists use these
equations to represent chemical
reactions?
Answer:
A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.
In mathematic equations we use an equal sign (=) for example 2 + 2 = 4, but in scientific chemical equations, we use an arrow (→), for example C + O2→ CO2. To the left of the arrow, we have the 'before' situation. This side represents the substances we have beforethe reaction takes place. They are called the reactants.
Which human activity can have a cooling effect on climate?
Identify the element below
Answer:
Beryllium
Explanation:
How much energy is required to raise the temperature of 3 kg of iron from 20°
C to 25°C? Use the table below and this equation: Q = mcAT.
Answer:
Option C (6750 J) is the appropriate response.
Explanation:
The given values are:
Mass of iron,
m = 3 kg
Specific heat capacity,
[tex]c_A[/tex] = 0.450
Temperature,
T = [tex]25-20[/tex]
= [tex]5^{\circ}C[/tex]
Now,
⇒ [tex]Q=mc_A T[/tex]
On substituting the values, we get
⇒ [tex]=3\times 0.450\times 5[/tex]
⇒ [tex]=6.75[/tex]
i.e,
⇒ [tex]=6750 \ J[/tex]