Answer:
a stress hormone is epinephrine
How many moles of aluminum oxide will be formed from 17 moles of aluminum reaction?
__Al + __ O2 — __Al2O3
Answer:
8.5 moles of Al₂O₃ will formed
Explanation:
Given data:
Number of moles of Al = 17 mol
Number of moles of Al₂O₃ formed = ?
Solution:
Chemical equation:
4Al + 3O₂ → 2Al₂O₃
Now we will compare the moles of Al₂O₃ with Al.
Al : Al₂O₃
4 : 2
17 : 2/4×17 = 8.5 mol
8.5 moles of Al₂O₃ will formed.
Sections of Earth’s continents are in slow, constant movement.
mantle
inner core
outer core
lithosphere
Answer:
yes beacause our earth was rotating on its axix but they dont feel anybody because of a gravity that sorounded on earth
What 3 objects produce gamma rays in space?
Answer:
SOURCES OF GAMMA RAYS
Explanation:
They are produced by the hottest and most energetic objects in the universe, such as neutron stars and pulsars, supernova explosions, and regions around black holes.
Hope This Helps * I Used My Science Book To Answer This
Solutions can be formed when gases dissolve into____
A. other gases
B. liquids
C. solids
D. all of the above
Answer:
liquid
Explanation:
A car is traveling with an initial velocity of 15 m/s when the driver decides to go faster by accelerating at 5 m/s2 for 10 seconds. How far did the car travel during this time?
70 m
300 m
175 m
400 m
Answer: Time needed: 2.5 s
Distance covered: 31.3 m
Explanation:
I'll start with the distance covered while decelerating. Since you know that the initial speed of the car is 15.0 m/s, and that its final speed must by 10.0 m/s, you can use the known acceleration to determine the distance covered by
on one side of the equation and solve by plugging your values
To get the time needed to reach this speed, i.e. 10.0 m/s, you can use the following equation
Explanation:
What 2 main factors drive the water cycle? view attachment
Answer:
sun and ocean. I had this last week
what is a solution of zinc and copper?
five letter word
Answer:
Brass
Explanation:
Brass is an alloy of copper and zinc, in proportions which can be varied to achieve varying mechanical and electrical properties.
Please help me ASAP !!!!
Answer:
Volume of HBr = V₂ = 7.5 mL
Explanation:
Given data:
Volume of NaOH =V₁= 25.0 mL
Molarity of NaOH =M₁= 0.150 M
Molarity of HBr =M₂= 0.5 M
Volume of HBr =V₂= ?
Solution:
M₁V₁ = M₂V₂
0.150 M ×25.0 mL = 0.5 M×V₂
V₂ = 0.150 M ×25.0 mL / 0.5 M
V₂ = 3.75 M.mL /0.5 M
V₂ = 7.5 mL
when the sun hits the water the water...
Answer:
It creates a rainbow
Explanation:
Cause of the reflectiveness of the water it could possibly form another light but more colorful. you can see how it works when its becomes summer, get a water hose and just let it flow. you'll see a miniature rainbow.
Which one of Steno’s principles is responsible for the thin undisturbed layers found in the Grand Canyon?
Answer:
Explanation:
The answer is principle of original lateral
Continuity. Hope this helps
What is the molar mass of sulfur (S)?
A. 32.06 g/mol
OB. 16 g
O c. 16 g/mol
D. 32.06 g
Answer:
A. 32.06 g/mol
Explanation:
The molar mass units are always g/mol
its 32.06 g/mol bro its letter A
WHAT TYPE OF WAVE IS SHOWN? (view picture)
A) Transverse Wave
B) Longitudinal Wave
C) Combined Wave
D) Sound Wave
Answer:
b
Explanation:
The type of wave shown is a longitudinal wave.
The correct option is B).
What are longitudinal waves?Longitudinal waves are those waves in which the vibrations of the waves move parallel to the direction of the wave.
The displacement of the medium is in the opposite direction of the wave propagation.
The three types of longitudinal waves are:
Ultrasound waveSound waveSeismic waveThus, the wave shown is B) Longitudinal Wave.
Learn more about Longitudinal Wave, here:
https://brainly.com/question/8497711
calculate the wavelength of light in nm that has a the frequency of 1.24 × 10^15s –1 . The velocity of light is 3.00 × 10^8m/s.
Answer:
nose
Explanation:
Among electromagnetic waves, UV rays are most dangerous because exposure to these radiation cause serious problems in living organism. Therefore, the wavelength of light is 2.41×10⁻⁷m.
What is electromagnetic wave?Electromagnetic wave is a wave which contain two component one is electric component and other is magnetic component. The electric and magnetic component are perpendicular to each other. There are so many wave that comes under electromagnetic wave like infrared wave , radio wave, light wave.
There is a relation between frequency of wave, and wavelength of wave
Mathematically,
ν=c÷λ
where,
ν=frequency of light=1.24 x10¹⁵s⁻¹
c is speed of light that is 3×10⁸m/s
λ is the wavelength of light=?
Substituting all the values
1.24 x10¹⁵s⁻¹=3×10⁸m/s÷λ
λ= 2.41×10⁻⁷m
Therefore, the wavelength of light is 2.41×10⁻⁷m.
To know more about electromagnetic wave, here:
https://brainly.com/question/12289372
#SPJ2
How could energy have played a role in the different rock types forming?
Answer:
Energy from different sources leads to different types of rocks.
Explanation: Energy inside Earth melts rock into liquid rock, but energy from the sun causes rock to weather into different types of rock.
Rocks are formed in earth by the deposition of minerals and decomposition of massive tectonic plates by the hot magma which is melted by the heat energy radiated from sun.
What are different types of rocks?There are broadly three different types of rocks, namely sedimentary rocks, igneous rocks and metamorphic rocks . They are classified based on their formation and composition.
The magma that the molten mineral fluid inside the earth crest melts under heat radiated from sun and this hotter fluid flows results in movement of tectonic plates and decomposition at some places.
Therefore, the heat energy and resultant convection current leads the tectonic plate boundaries and formation of different kinds of rocks which are stimulated by the action of air and water.
To find more on rocks, refer here:
https://brainly.com/question/11473096
#SPJ2
Which of these is a base?
A. HCI
B. Vinegar
C. HNO 3
D. Ammonia
Answer:
ammonia is a base
hope it helps
Answer:
D. Ammonia
hope it helps
fill in the chart pls ,
Answer:
BeCL2 .1st column 2nd column 3rd column
1. beryllium 2.chloride. 3.beryllium
chloride
I think there is mistake of chemical this is Na2SO4
Na2SO4-----column 1. column 2
1.disodium 2.sulfate
decahydrate
column 3
3.disodium sulfate decahydrate
Explanation:
this is my answer
Copper (Cu) reacts with oxygen (O) to form copper oxide (Cu). The properties of copper oxide (CuO) are most likely
Different from copper or oxygen
Similar to both copper and oxygen
Similar to only copper
Similar to only oxygen
Answer:
A- SImilar to both copper and oxygen
Explanation:
If copper and oxygen react to form copper oxide, a compound of both Copper and Oxygen, they most likely have traits from both elements, therefore its A
what are the seven identified components
of the electromagnetic spectrum?
Answer:
The EM spectrum is generally divided into seven regions, in order of decreasing wavelength and increasing energy and frequency. The common designations are: radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays and gamma rays.
Explanation:
Answer:
The EM ( electromagnetic) spectrum is generally divided into seven region ,in order of decreasing wave length and increasing energy and frequency.The common designations are:
1. Radio waves
2. Microwave
3. Infrared (IR).
4. Visible light.
5. Ultraviolet (UV).
6. X-rays.
7. Gamma rays.
Compare and contrast the ways mitosis and meiosis are important to reproduction.
Answer:
The purpose of mitosis is cell regeneration, growth, and asexual reproduction,while the purpose of meiosis is the production of gametes for sexual reproduction. Mitosis is a single nuclear division that results in two nuclei that are usually partitioned into two new daughter cells.
Explanation:
Mitosis produces two cells from one parent using one division event. But meiosis produces four new child cells with two divisions, each of which has half the genetic material of its parent. Mitosis takes place all over the body, while meiosis only takes place in the sex organs and produces sex cells.
Why are organelles called "little organs"?
PLEASE HURRY I WILL GIVE BRAINLIEST ANSWER
Cation is the postively charged unit which is formed by the transfer of one or more electrons. It is attracted towards cathode thus it is called the CATION.
_____________________________________Question no 2:IONIC BOND:Ionic bond is the type of bond which is formed between the positive and negative ions. It is mostly formed between the Metals (i.e. group 1 and 2) and Non metals (i.e. mostly group 7). The positive charge on metal is due to the loosing of electron and negative charge on non metal is due to accepting the electron.
_____________________________________Question no 3:POLYATOMIC ION:A molecular ion is a covalently bonded set of two or more atoms, that can be considered to behave as a single unit, it also has a charge on it.
_____________________________________Question no 4:CONDUCTIVITY:Conductivity is more in liquid than in solid because the conductivity is flow of electron and the movement is less in solid than liquids thus the solid has less conductivity. The liquid has more movement of molecules due to which there is more conductivity.
_____________________________________Question no 5:FORMULA UNIT:Formula unit is a emperical formula used to express the ions in ionic compounds. It is the least whole number ratio of the ions present in the ionic compound.
_____________________________________Question no 6:CRYSTAL LATTICE:Crystal lattice is the arrangement of atoms, molecules, or ions of a crystal in the form of a three dimensional space lattice.
_____________________________________Question no 7:ANION:Anion is the negative charged because It receives one electron from the cations thus becomes negatively charged entity. It is attracted towards the positive anode thus it is called anion.
_____________________________________Question no 8:MOLECULES:Ionic bond do not form molecules, They form the ions.
_____________________________________Question no 9:Attraction:One type of bonding i.e. ionic bonding is formed by the attraction between the positive and negative ions.
_____________________________________Question no 10:LATTICE ENERGY:It is the amount of energy required to change the state of matter.
_____________________________________Best Regards,'Borz'Which orbital (or ring) contains the electron that calcium loses to form an ion?
Answer: 4s orbital contains the electron that calcium loses to form an ion
Explanation:
Electronic configuration represents the total number of electrons that a neutral element contains. The electrons are filled according to Afbau's rule in order of increasing energies.
Calcium with atomic number 20 has 20 electrons and has 2 valence electrons which it can lose to for stable [tex]Ca^{2+}[/tex] ion. The valence elctrons are present in valence shell i.e. 4s.
[tex]Ca:20:1s^22s^22p^63s^23p^64s^2[/tex]
[tex]Ca^{2+}:18:1s^22s^22p^63s^23p^64s^0[/tex]
which one is more dense?
Answer:
The picture on the right with more circles inside of it is more dense
Explanation:
How do I calculate Molar Mass
Answer:
Explanation:
The molar mass is the mass of a given chemical element or chemical compound (g) divided by the amount of substance (mol).
The molar mass of a compound can be calculated by adding the standard atomic masses (in g/mol) of the constituent atoms. hope this helps...
Mole ratio compares the subscripts of two compounds in a balanced reaction.
(1 Point)
TRUE
FALSE
Plz help
Answer:
False
Explanation:
The mole ratio compares the coefficient of compounds reacting and giving products in a chemical reaction.
They are used for converting and showing relationship between reactants and products in a chemical reaction.
For example;
2A → B + C
the mole ratio is read as;
2 mole of A produces 1 mole of B and 1 mole of C
1. What is the mass percentage of H2O in CuSO4-5H,O?
Answer: Molar mass of CUSO4 5H2O = 436.17861 g/mol.
Explanation: Convert grams CUSO4 5H2O to moles or moles CUSO4 5H2O to grams. Molecular weight calculation: 12.0107 + 238.02891 + 32.065 + 15.9994*4 + 5*(1.00794*2 + 15.9994) ›› Percent composition by element.
can barium ionically bond with kalium
Answer:
NO
Explanation:
Barium cannot ionically bond with Kalium. Kalium is the Latin name for potassium.
Both Barium and potassium are metals. Metals and Metals do not combine to form ionic compounds. Only metals and non-metals form this bond type.
The reason for this is that ionic bond forms by the transfer of electrons from one specie to another that receives it. Barium is metal and would freely donate electrons to attain stability. Kalium is metal and shares similar property.Which of the following is the best hypothesis? A. Chemical reactions and physical reactions are interesting to watch B. How does wood change when it burns in a campfire? C. During a chemical reaction, the total mass of material does not change D. Chemical reactions are easier to identify than physical reactions
Answer:
c
Explanation:
that is what u think is going to happen it IS AN HYPOTHESIS it is an (theory)
Is CH4O2 polar or nonpolar?
Answer:
polar
Explanation:
Using the balanced equation given below, calculate the number of moles of CaBr2 produced in the reaction of 5.0 moles of AlBr3. ____ moles CaBr2
*your answer should be written as X.X
2AlBr3 + 3CaO —> Al2O3 + 3CaBr2
Answer:
7.5 moles of CaBr2 are produced
Explanation:
Based on the equation:
2AlBr3 + 3CaO → Al2O3 + 3CaBr2
2 moles of AlBr3 produce 3 moles of CaBr2 if CaO is in excess.
Using this ratio: 2 moles AlBr3 / 3 moles CaBr2. 5 moles of AlBr3 produce:
5 moles AlBr3 * (3 moles CaBr2 / 2 moles AlBr3) =
7.5 moles of CaBr2 are produced