Answer:
5.50 mil KCI * 2 mol KCIO3 / 2 mil KCI
I don’t know the answer, but my teacher gave me the steps to solve it...
Explanation:
calculate the chemical amount of ammonia present in a 11.22g sample of the compound
Answer:
3.97 x 10²³atoms
Explanation:
Given parameters:
Mass of ammonia = 11.22g
Unknown:
Chemical amount of ammonia present = ?
Solution:
The chemical amount present in a substance is the number of atoms it contains.
To solve this problem, from the given mass find the number of moles first.
Number of moles = [tex]\frac{mass}{molar mass}[/tex]
Molar mass of NH₃ = 14 + 3(1) = 17g/mol
Number of moles = [tex]\frac{11.22}{17}[/tex] = 0.66mole
1 mole of any substance contains 6.02 x 10²³ atoms
0.66 mole of ammonia will contain 0.66 x 6.02 x 10²³ atoms
= 3.97 x 10²³atoms
WILL GIVE 50 POINTS AND BRAINLIEST!!!!!
Co^3+ and BrO^- what is the empirical formula and name? K^+ and C2H3O2^- what is the empirical formula and name of compound?
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.
Is CH4O2 polar or nonpolar?
Answer:
polar
Explanation:
which one is more dense?
Answer:
The picture on the right with more circles inside of it is more dense
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
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
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
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
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
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
An isotope is an atom that has a different_______from it’s parent atom, meaning it has lost or gained______.
Answer:
1- number of neutrons
2- mass
Explanation:
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 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.
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:
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
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:
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A helium balloon has a volume of 2.00L at 101kpa. As the balloon rises the pressure drops to 97.0kPa. What is the new volume?
Answer:
2.08L
Explanation:
V1 = 2.00L
P1 = 101kPa
P2 = 97.0kPa
V2 = ?
from Boyle's law,
P1V1 = P2V2
101 × 2 = 97 × V2
V2 = 202/97 = 2.08L
Therefore, the new volume is 2.08L
Answer:
2.1L
Explanation:
Given parameters:
Initial volume = 2L
Initial pressure = 101kPa
Final pressure = 97kPa
Unknown:
Final or new volume = ?
Solution:
Now to solve his problem which relates pressure and volume, we simply apply Boyle's law which is mathematically expressed below;
P₁ V₁ = P₂ V₂
P and V are pressure and volume
1 and 2 are initial and final states;[tex]\frac{101 x 2}{97}[/tex]
101 x 2 = 97 x V₂
V₂ = [tex]\frac{101 x 2}{97}[/tex]
V₂ = 2.1L
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.
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questions:
3Na2SO4
b. How many total atoms of Na are represented in the formula?
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
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.
185 L of Cl2 is how many moles of Cl2?
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
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.hEEEYYYY peeps! this is the same related question about another scientist with the cells, so yeaaaaaah...btw meh teacher also made dis as well:>
Answer:
im pretty sure it is D
Explanation:
this is an old term for a microscopic organisms that included bacteria, protozoans, and very small animals
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.
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...
What 2 main factors drive the water cycle? view attachment
Answer:
sun and ocean. I had this last week
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.
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