Answer:
By Bayer process.
Explanation:
In the Bayer process, bauxite ore is heated in a pressure vessel along with a sodium hydroxide solution (caustic soda) at a temperature of 150 to 200 °C. At these temperatures, the aluminium is dissolved as sodium aluminate (primarily [Al(OH)4]−) in an extraction process.
The attraction between water molecules and a Nation or a Clion occurs because water molecules are —
A.
nonpolar
B
symmetrical.
С
polar.
D
linear.
Answer:
answer is
c. Polar
hope this helps
why is pluto classified as a dwarf planet?
Answer:
pluto is considered a dwarf planet because it did not meet the three criteria the IAU uses to define a full sized planet
Explanation:
Calculate the pOH and the pH of a 5.0 x 10-2 M solution of NaOH.
Answer:
pOH = 1.3, pH = 12.7
Explanation:
Since NaOH is a strong base, it will completely ionize; further, since it completely ionizes, our hydroxide concentration (a product of the ionization) will be the same as the given concentration of NaOH.
NaOH -> Na⁺ + OH⁻, [OH⁻] = 5.0 x 10^-2 M
pOH is the negative log of the hydroxide concentration, so plug our hydroxide concentration in:
pOH = -log[OH⁻] = -log[5.0 x 10^-2 M] = 1.3
Since pH + pOH = 14, we can plug in pOH and solve for pH:
pH + 1.3 = 14
pH = 14 - 1.3 = 12.7
Thus, our pOH = 1.3 and pH = 12.7.
How many moles of CO2 are in 54.3 g of CO2 ?
Answer:
There is actually 1 mole in 54.3 g of CO2
Round the following number to 3 significant figures:
15937
pls helpppp
Answer:
15900
Explanation:
I think hope this helps!! :D
Answer:
15900
Explanation:
1.9x10^23 atoms of sulfur to grams of sulfur
Answer:
see explanation and punch in the numbers yourself ( will be better for your test)
Explanation:
If you are given atoms you need to divide by Avogadro's number 6.022x10^23
then you will have moles of sulfur-- once you have moles multiply by the molar mass of sulfur to go from moles to grams
mm of sulfur is 32 g/mol
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, the grams of sulfur in 1.9x10²³ atoms of sulfur is 9.92g.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity of amount of substance.
Given number of atoms= 1.9x10²³atoms
we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number
mole =given number of atoms ÷ 6.022×10²³(Avogadro number)
Substituting the values
mole=1.9x10²³÷ 6.022×10²³
mole = 0.31 mole of sulfur
Mole = given mass÷ Molar mass
Molar mass of sulfur=32g/mol
mass of sulfur =0.31 mole ×32g/mol
mass of sulfur=9.92g
Therefore, the grams of sulfur in 1.9x10²³ atoms of sulfur is 9.92g.
To know more about mole, here:
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Which of the following accurately describes the orbital path of most planets in our solar system?
The orbital path is in a perfect circle.
The orbital path looks circular.
The orbital path is in a large elliptical shape.
The orbital path varies greatly from planet to planet.
PLEASE HELP ME ASAPPPPPPPP!!!!!!
Answer:
I think C But I can't really see it well
A sample of unknown gas has a temperature of 378k. When the temperature is increased to 546k,the volume also increases to 1047 ml. What was the original volume ?
Given :
A sample of unknown gas has a temperature of 378 K.
[tex]T_i = 378 \ K , \ T_f = 546 \ K[/tex]
When the temperature is increased to 546 K, the volume also increases to 1047 ml.
[tex]V_f - V_i = 1047 \ ml[/tex]
Solution :
We know, temperature is directly proportional to volume.
[tex]\dfrac{T_i}{T_f}=\dfrac{V_i}{V_f}\\\\\dfrac{T_i}{T_f} = \dfrac{V_i}{1047 + V_i}\\\\\dfrac{V_i}{1047+V_i}=\dfrac{378}{546}\\\\546V_i = 378V_i + 378\times 1047\\\\168V_i = 3,95,766\\\\V_i = 2,355.75\ ml[/tex]
Therefore, the original volume is 2.355.75 ml.
What does the charge tell you about an atom?
Brainliest!!!!!!
Answer:
The charge will tell you if the atom is neutral, positive, or negative. "The charge of an atom is the number of protons minus the number of electrons."
Which statement regarding this equation is TRUE?
4Fe (s) + 3O2 (g) —> 2Fe2O3 (s)
There are 2 reactants.
The coefficient on O2 is 8.
Iron (III) oxide is a gas.
There are 5 atoms of oxygen on the reactant side.
Answer:
iron (III) oxide is a gas
What causes the expression of a recessive trait? one dominant and one recessive factor (allele) one dominant gene two recessive factors (alleles) two dominant factors (alleles)
Answer: i think it’s two recessive alleles
Explanation:
Answer:Two recessive alleles is correct
Explanation:
I TOOK THE TEST (k-12 student) TwT
Q3. When copper (II) chloride reacts with silvernitrate, copper (II) nitrate and silverchloride are formed.Write the balanced equation for the reaction given above:A.CuCl2(aq) + 2 AgNO3(aq) →Cu (NO3)2(aq) + 2 AgCl(s)B.CuCl2(aq) + NaNO3(aq) →Cu (NO3)2(aq) + AgCl(s)C.CuCl2(aq) + 2 NaNO2(aq) →Cu (NO2)2(aq) + 2 AgCl(s)D.CuCl(aq) + NaNO3(aq) →Cu NO3(aq) + AgCl(aq
Answer:
See explanation
Explanation:
When we are writing chemical reaction equations, we must ensure that such equations are balanced. That is, the number of atoms of each element on both sides of the reaction equation are exactly the same.
After we identify the formula of each compound in the reaction, then we proceed the write the balanced reaction equation as follows;
CuCl2 + 2AgNO3 -------> Cu(NO3)2 + 2AgCl
What does the little 2 in 2CO2 mean?
Answer:
it means 2 oxygen atoms in the molecule
Explanation:
An organism whose cell contains a nucleus.
Answer:
Eukaryotes
Explanation:
Which sediments are carried by suspension?
Answer:
Sand and silt can be carried in suspension.
Explanation:
For example, sand and silt can be carried in suspension in river water and on reaching the sea bed deposited by sedimentation; if buried, they may eventually become sandstone and siltstone (sedimentary rocks) through lithification.
Read the temp what is it?
17.3 or 17.25??
Answer:
I would say 17.25.
Explanation:
The answer to this question
Answer:
C. seems to be the answer as ionic comlopunds have high melting points becuase of the anion cation bond which is not seen in covalent bonds that share electrons in polar arragnements.
Explanation:
Answer:
I think is B hopefully is
Using the human species as an example, explain why physical appearance or morphology is NOT always useful for identifying organisms belonging to the same species.
Answer:
Get SNS
Explanation:
what element has 5 protons, 7 electrons, and 6 neutrons
Answer: Boron
Explanation: lol
Answer:
Boron. (What kind of name is that?????????????)
Explanation:
what are the respective coefficients needed to balance the equation below _N2(g) + _H2(g) --> _NH3(g)
In the balanced equation, the mass of reactant is exactly equal to the mass of product. The respective coefficients needed to balance the equation is N₂(g) + 3H₂(g) ⇒ NH₃(g) .
What is balanced equation ?A chemical equation that is balanced has equal amounts of each element's atoms on both sides of the equation and conserves mass.
Because mass cannot be generated or destroyed, according to the rule of conservation of mass, a chemical equation must always be in balance.
The Law of Conservation of Mass is followed by a balanced equation. This is a crucial scientific guiding principle. Finally, a balanced equation enables us to forecast the quantity of reactants and products that will be produced. Sort of crucial if you're attempting to determine how much fuel to supply a spacecraft traveling to Mars
Thus, the balanced equation is N₂(g) + 3H₂(g) ⇒ NH₃(g) .
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What kind of rock can be broken
down to make sand?
Answer:
sandstone
Explanation:
Sandstone is a mineral rock made of small particles.
What will happen to the Sun in approximately 5.5 billion years?
Answer:
This lifespan began roughly 4.6 billion years ago, and will continue for about another 4.5 – 5.5 billion years, when it will deplete its supply of hydrogen, helium, and collapse into a white dwarf.
Explanation:
Got this from the internet lol
why is the air so warm at the equator
Answer:
C
Explanation:
Same reason as the answer before mine, but the answer to your questionaire is C.
PLEASE Answer asap! What characteristics are shared by all alkali metals and alkaline earth metals?
A. They conduct electricity very well
B. They are strong and shiny
C. They form alkaline solutions when mixed with water
D. They do not react with water at all
Answer:
C
Explanation:
Mostly all of them but most likely C
When the volume and concentration of a base that completely neutralizes an acid is known, you can determine the concentration of the acid due to at the point of neutralization, the number of moles of acid equals the number of moles of base.
why does this happen? (btw this is describing titration) the criteria for the answer is
"Try to answer why the results occurred. If you are in chemistry, what is happening at the molecular level with bonding, electrons, etc. " WILL MARK BRAINLIEST!!!!
Answer:
30
Explanation:
Acid HX has a very large Ka. How will the relative amounts of H+ and HX
compare at equilibrium?
A)The concentration of H+ will be larger than HX
B)The concentration of HX will be larger than H+
C)The concentration of HX will be equal to H+
please help me asap. NO LINKS I WILL REPORT YOU!!!!
the galvanometer is not measuring any electricity despite all wires being hooked up. Why could this be?
Answer: you can find out information about Wheatstone bridge.
Explanation: maybe resistors are adjusted such a way that current through
Galvanometer is zero. There is no picture.
Answer:
mmh maybe the connections arent right
Explanation:
coz when u mess up even a bit current wont flow
Can someone help me with this
Answer:
4.
A. Alkali
B. Alkaline
C. Transition
5. True (it is extremely powerful especially when reacting with water)
Explanation:
Would a rollercoaster have the greatest kinetic energy at the top of the highest hill or at the bottom on the highest hill
Answer:
The rollercoaster has the lowest kinetic energy at the top of the hill.
The rollercaoster has the highest kinetic energy at the bottom of the hill.
Explanation:
The kinetic energy of any solid body in motion is usually computed using this formula:
K.E = [tex]\frac{1}{2}mv^2[/tex]
From this, we can see that it varies based on two major parameters - The mass of the moving object and the velocity of the moving object.
We can assume that the mass of the rollercoaster is constant since no one gets off and it does not shrink in its size during the ride.
This means that the variations in the K.E are mainly coming from its velocity.
At the top of the hill, the rollercoaster is moving at its slowest pace. hence, it has the lowest kinetic energy at the top of the hill.
However, at the bottom of the hill, the rollercoaster is moving its fastest, hence it has the highest kinetic energy at the bottom of the hill.
