Answers
Mass of KCl : 32 g
Further explanationGiven
Reaction
2KCIO₃ → 2KCI + 30₂
52 g Potassium chlorate
Required
Mass of KCl
Solution
mol of KCIO₃ :
= mass : MW
= 52 g : 122.55 g/mol
= 0.424
From equation, mol KCl :
= 2/2 x mol KCIO₃
= 2/2 x 0.424
= 0.424
Mass KCl :
= mol x MW
= 0.424 x 74.5513 g/mol
= 31.6≈32 g
Related Questions
Heat is added to ice at 0 °C. Explain why the temperature of the ice does not change. What does change?
Answers
Heat is added to ice at 0 °C. Explain why the temperature of the ice does not change. What does change?When heat is added to ice at 0°C, the temperature of the ice does not change. This happens because all the heat energy is used up in overcoming the intermolecular forces of attraction (hydrogen bonds) that exist between the water molecules in ice.
As a result, the ice undergoes a phase change, from a solid to a liquid. This process is called melting. During melting, the temperature of the ice remains constant at 0°C because all the heat energy is used up in overcoming the intermolecular forces of attraction.The energy required to melt ice is known as the heat of fusion. The heat of fusion is the amount of heat energy required to change 1 kilogram of a solid into a liquid at its melting point. For water, the heat of fusion is 334 kJ/kg. This means that 334 kJ of heat energy is required to melt 1 kg of ice at 0°C. Therefore, during the melting of ice, the temperature of the ice does not change, but the internal energy of the ice does change, and this is manifested in the change of phase from a solid to a liquid.In summary, when heat is added to ice at 0°C, the temperature of the ice does not change, and all the heat energy is used up in overcoming the intermolecular forces of attraction between the water molecules in ice. This results in the melting of ice without any change in temperature.For such more question on molecules
https://brainly.com/question/475709
#SPJ8
what structure do bacteria cells have
Answers
Answer:
They are clumped together and fluffy looking
Explanation:
I’ve seen what they looked like in a project during highschool we swabbed some books and door handles and saw which had the most bacteria. It was surprisingly the books
Which of the following statements is true about what happens in all chemical reactions? A. The ways in which atoms are joined together is not changed. B. Bonds between atoms are broken and new bonds are formed. C. The final substances are called reactants.
Answers
Answer:
B.bonds are broken and new bonds are formed
1. Two boys balanced steady in a sea-saw game
is an example of
A
static equilibrium.
B dynamic equilibrium.
С
homogenous equilibrium.
D mutual equilibrium.
Answers
They are balanced steadily which means they’re at the same point
Two boys balanced steady in a sea-saw game is an example of mutual equilibrium. Thus option D is correct.
What is equilibrium?Equilibrium is defined as a condition in which all the influences acting upon it are cancelled by others, resulting in stabled, balanced or unchanging system. It can also be defined as a state of balance.
There are basically six types of equilibrium
Stable equilibriumUnstable equilibriumMetastable equilibriumStatic equilibriumDynamic equilibriumHomogenous equilibriumMutual equilibriumThus, two boys balanced steady in a sea-saw game is an example of mutual equilibrium. Thus option D is correct.
To learn more about equilibrium, refer to the link below:
https://brainly.com/question/13524990
#SPJ5
hello, can you help me identify the name of these 4 molecules as well as the structural formula and the skeletal formula? thank you
Answers
Answer:1. metyletevinyl
4. (Z)-3-hydroxypropenal
Explanation:
What does it take in order for plates to move?
Answers
Answer:
Earth's thin outer shell is broken into big pieces called tectonic plates. These plates fit together like a puzzle, but they're not stuck in one place. They are floating on Earth's mantle, a really thick layer of hot flowing rock. The flow of the mantle causes tectonic plates to move in different directions.
Explanation:
A 0.534 g sample of steam at 104.3 ∘C is condensed into a container with 4.86 g of water at 15.9 ∘C. What is the final temperature of the water mixture if no heat is lost? The specific heat of water is 4.18 J g⋅ ∘C, the specific heat of steam is 2.01 J g⋅ ∘C, and Δvap=40.7 kJ/mol.
Answers
The final temperature of the water is 75.6∘C.
What is condensation?Condensation is the process by which steam is converted to water at the boiling point of water. Heat lost by steam = Heat gained by water.
Heat lost by steam= ( 0.534 g × 2.03 × (104 - 100)) + (0.534 g × 40.7 × 10^3 / 18) = 4.34 + 1207.4 = 1211.74 J
Heat gained by water = ( 4.86 × 4.18 × (T2 - 15.9 ∘C))
1211.74 = 20.3T2 - 322.77
1211.74 + 322.77 = 20.3T2
T2 = 1211.74 + 322.77/20.3
T2 = 75.6∘C
Learn more about specific heat capacity: https://brainly.com/question/2530523
Net ionic equation for potassium sulfide and magnesium iodide
Answers
The net ionic equation for the reaction between potassium sulfide and magnesium iodide is S2- + Mg2+ -> MgS, as the potassium and iodide ions are spectator ions and do not participate in the reaction.
To determine the net ionic equation for the reaction between potassium sulfide (K2S) and magnesium iodide (MgI2), we first need to identify the ions present in each compound and then determine the products formed when they react.
Potassium sulfide (K2S) dissociates into two potassium ions (K+) and one sulfide ion (S2-):
K2S -> 2K+ + S2-
Magnesium iodide (MgI2) dissociates into one magnesium ion (Mg2+) and two iodide ions (I-):
MgI2 -> Mg2+ + 2I-
Now, we need to determine the possible products when these ions combine. Since potassium (K+) has a +1 charge and iodide (I-) has a -1 charge, they can combine to form potassium iodide (KI):
K+ + I- -> KI
Similarly, magnesium (Mg2+) and sulfide (S2-) can combine to form magnesium sulfide (MgS):
Mg2+ + S2- -> MgS
Now, we can write the complete ionic equation by representing all the ions present before and after the reaction:
2K+ + S2- + Mg2+ + 2I- -> 2KI + MgS
To obtain the net ionic equation, we remove the spectator ions, which are the ions that appear on both sides of the equation and do not participate in the actual reaction. In this case, the spectator ions are the potassium ions (K+) and the iodide ions (I-).
Thus, the net ionic equation for the reaction between potassium sulfide and magnesium iodide is:
S2- + Mg2+ -> MgS
For more such questions on ionic equation visit:
https://brainly.com/question/25604204
#SPJ8
Th ph value of milk is close to
Answers
Answer:
6.5
Explanation:
2 NH3 + 3 CuO g 3 Cu + N₂ + 3H₂O
In the above equation how many moles of N₂ can be made when 38 moles of CuO are
consumed?
Answers
The moles of N2 formed when 38 moles of CuO is consumed 12.66 mol.
What is moles?
A mole of a substance can be defined as an amount of substance having 6.022 x 10^23 particles in it. This number is known as Avogadro's number. All the balanced chemical equations are written using number of moles of reactants and products.
The balanced chemical equation of the reaction can be written as,
2 NH3 + 3 CuO ------> 3 Cu + N2 + 3 H2O
Here, 2 moles of ammonia is reacting with 3 moles of CuO to give 3 moles of Cu, 1 mole of N2 and 3 moles of water. So when 38 moles of CuO is consumed,
Moles of N2 = 38 x 1 / 3 = 12.66 mol.
Therefore, 12.66 mole of N2 is formed when 38 moles of CuO is consumed in the reaction.
To learn more about moles click on the given link https://brainly.com/question/14357742
#SPJ1
lonic bonds form between oppositely charged
Answers
answer:
ionic bonds form between oppositely charged ions
explanation:
an ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions. ionic bonds are formed between a cation, which is usually a metal, and an anion, which is usually a nonmetal. a covalent bond involves a pair of electrons being shared between atoms.Sugar dissolves in water. Which statement best describes what is happening? (1 point) Sugar stays together but in a liquid form that can no longer be seen in the water. Sugar stays together but in a liquid form that can no longer be seen in the water. Sugar slowly melts, turning from a solid to a liquid and combining with the water. Sugar slowly melts, turning from a solid to a liquid and combining with the water. The water molecules in sugar will separate from each other and combine with the water, releasing the sweetness into the water. The water molecules in sugar will separate from each other and combine with the water, releasing the sweetness into the water. A large collection of sugar molecules break into individual molecules and disperse in the water.
Answers
Yes sir solid gas and liquid
If the magnetic energy stored by a 0.50 H inductor is 3.6 J, what is the current through it?
A. 0.13 A
B. 0.90 A
C. 1.8 A
D. 3.8 A
E. 5.4 A
Answers
The current passing through the inductor is 3.8 A. The correct option is D. 3.8 A
Energy stored in a magnetic fieldFrom the question, we are to determine the current passing through the inductor.
From the formula, for the energy stored in a magnetic field
E = 1/2LI²
Where E is the energy
L is the inductance
and I is the current
From the given information,
E = 3.6 J
L = 0.50 H
Putting the parameters into the formula, we get
3.6 = 1/2 × 0.50 × I²
3.6 = 0.25 × I²
I² = 3.6 ÷ 0.25
I² = 14.4
I = √14.4
I = 3.7947
I ≅ 3.8 A
Hence, the current passing through the inductor is 3.8 A. The correct option is D. 3.8 A
Learn more on Energy stored in a magnetic field here: https://brainly.com/question/15244801
When neutral, Ecorium has 126 protons and 126 electrons. Given that it has 6valence electrons, what is the effective nuclear charge felt by these outer electrons?
Answers
Answer:
\(+6\)Explanation:
Here, we want to calculate the effective neutral charge
From the question, there are 126 electrons
Since there are 6 valence electrons, the number of electrons residing outside the valence electrons is 120
The effective nuclear charge is the difference between the number of protons and the number of electrons outside the valence shell
Mathematically, we have it that:
\(Nuclear\text{ charge = 126 - 120 = +6}\)1. ATOMIC RADIUS: For each of the following sets of atoms, rank the atoms from smallest to largest atomic radius.
a. Li, C, F
b. Li, Na, K
c. Ge, P, O
d. C, N, AI
Answers
Answer:
The answer is letter C
What type of reaction heats the water to generate steam in a nuclear power plant
Answers
What is the reduction half-reaction for the equation below?
5Fe2+(aq) + MnO4" (aq) + 8H+(aq) → 5Fe3+ (aq) + Mn2+(aq) +
4H2O(1)
Answers
Answer:
\(MnO_4^-+8H^++5e^-\rightarrow Mn^{2+}+4H_2O\)
Explanation:
Hello there!
In this case, since redox reactions are characterized by the presence of a reduction reaction, whereby the oxidation of the element decreases, and an oxidation reaction whereby the oxidation of the element increases.
In such a way, for the given chemical equation, we can see Fe is increasing its oxidation state from 2+ to 3+, which means it is oxidized. On the flip side, Mn is being reduced from 7+ (MnO₄⁻) to 2+ and this, the reduction half-reaction is:
\(MnO_4^-+8H^++5e^-\rightarrow Mn^{2+}+4H_2O\)
Whereas five electrons are carried.
Regards!
Calculate the solubility at 25 °C of Ni(OH)2 in pure water and in a 0.0200 M NaOH solution. You'll find K. data in the ALEKS Data tab. Round both of your answers to 2 significant digits
solubility in pure water:
solubility in 0.0200 M NaOH solution:
Answers
Answer:
solusoin ( 0.0130 )²
Explanation:
In 24 g of carbon ,how many number of carbon atoms.
Answers
There are 1.204 × 10²⁴ atoms in 24 grams of carbon.
How to calculate number of atoms?The number of atoms present in a substance can be calculated by multiplying the number of moles in the substance by Avogadro's number as follows;
no of atoms = no of moles × 6.02 × 10²³
According to this question, there are 24 grams of carbon atom. The number of moles in this carbon is as follows:
no of moles = 24g ÷ 12g/mol = 2mol
no of atoms = 2 × 6.02 × 10²³
no of atoms = 1.204 × 10²⁴ atoms.
Learn more about atoms at: https://brainly.com/question/14190064
#SPJ1
Periodic Table High School Reference Sheet
Which of the following equations best describes the energy at point
C, assuming energy is conserved?
A PEA = KEC
B
PEA = KEC - PEC
C. PEB = KEO - PEO
D
PES = PEC
Answers
a. Label the reactants and the products in the following chemical equation. (1 point)
CH₂ +20₂ → CO₂ + 2H₂O
b. Describe how the balanced chemical equation above illustrates the law of conservation of
matter. (1 point)
c. How do an endothermic reaction and an exothermic reaction differ? (1 point)
D. Sort the examples below into endothermic reactions and exothermic reactions.
Answers
1) The balanced reaction equation is; CH₂(g) +20₂(g) → CO₂(g) + 2H₂O(g) and the law of conservation of mass is shown be cause the number of atoms of each element is the same on both sides of the reaction equation.
2) Endothermic reaction absorb heat while exothermic reactions give out heat
What is an endothermic and exothermic reaction?An endothermic reaction is a chemical reaction that absorbs energy from its surroundings in the form of heat. In other words, the energy required to break the bonds of the reactants is greater than the energy released when new bonds are formed in the products, resulting in a net absorption of heat.
Exothermic reaction is a chemical reaction that releases energy in the form of heat. In an exothermic reaction, the energy released when new bonds are formed in the products is greater than the energy required to break the bonds of the reactants, resulting in a net release of heat.
Learn more about exothermic reaction:https://brainly.com/question/29591199
#SPJ1
Which orbital that would never exist in the quantum description of an atom is _____.
(a) 3d
(b) 1p
(c) 2s
(d) 4f
Answers
Answer:
C. 2s
Explanation:
the "s" orbital is only possible at an energy level of n = 1. 2s means the energy level is at n = 2 and that's not possible for the "s" sublevel.
4. Increase and decrease the amounts of H2 and O2 to complete the table below
Answers
The amount of water produced and the excess reactants in the formation of water are given below:
4 molecules of H₂ and 4 molecules of O₂ produces 4 molecules of H₂O; O₂ is in excess7 molecules of H₂ and 6 molecules of O₂ produces 7 molecules of H₂O; O₂ is in excess4 molecules of H₂ and 2 molecules of O₂ produces 4 molecules of H₂O; no excess6 molecules of H₂ and 8 molecules of O₂ produces 6 molecules of H₂O; O₂ is in excess5 molecules of H₂ and 2 molecules of O₂ produces 4 molecules of H₂O; 1 molecule of H₂ is in excessWhat is the equation of the formation of water?The equation of the formation of water is given below:
2 H₂ + O₂ --> 2 H₂OThe mole ratio of H₂ to O₂ is 2 : 1
Learn more about the formation of water at: https://brainly.com/question/15230434
#SPJ1
What is the difference between a state and a path function?(Explain a lot to me so that I understand please)
Answers
Answer:
Explanation:
Here, we want to differentiate between a state and a path function
These are terms that we use in thermodynamics
We can infer the differences in their names
A state function is state-dependent and it does not take into consideration the path that was taken to reach this state. They are simply functions that exist in a state without considering the path at which the state was arrived at. Example of state functions are temperature and pressure
However, for a path function, it depend on the path taken to reach the state. For example, if we are to transit between two states, a path function will consider the path taken to reach the state. Work is an example of a path function.
If others adopted similar habits, how might the world of science change?
Answers
Answer:
Explanation:
Smoking a cigarette, snorting cocaine, or drinking yourself into oblivion are all easy habits to adopt because they light up your brain with the neurotransmitter …
compared to a phosphorus atom, a P-3 ion has
Answers
Answer:
3 electrons more
explanation
minus sign in chemistry means more
homeworkstudycom
A student measured the gram weight of a metal object to be 5.88g. According to the supplier the object weighs 5.97g. What is the error in the student's measurement?
A. -0.09
B. +0.09
Answers
Answer:
–0.09
Explanation:
From the question given above, the following data were obtained:
Measured value = 5.88 g
Actual value = 5.97 g
Error =?
The error in the student's measurement can be obtained as follow:
Error = Measured value – Actual value
Error = 5.88 – 5.97
Error = –0.09
Therefore, the error in the student's measurement is –0.09
In what state of matter is the substance in at 200 C and 30 atm
Answers
Pick the correct answer. The waves cause the particles to vibrate
A.slower than the sound source
B.at the same rate as the sound source
C.faster than the sound source
Answers
Answer:
its a
Explanation:
give me brainliest plzz
Among electromagnetic waves, UV rays are most dangerous because exposure to these radiation cause serious problems in living organism. The correct option is option A.
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,
E=hc/λ
where,
E = energy of electromagnetic wave
h is planks constant having value 6.67×10⁻³⁴js
c is speed of light that is 3×10⁸m/s
λ is the wavelength of electromagnetic wave
The vibration of particles near the sound source is higher than in the wave.
Therefore, the waves cause the particles to vibrate slower than the sound source. The correct option is option A.
.
To know more about electromagnetic wave, here:
https://brainly.com/question/12289372
#SPJ2
The helium tank has a pressure of 650 torr at 25 degree celsius what will be the pressure if the temperature is tripled?
pa help po
Answers
The helium tank has a pressure of 650 torr at 25 degree Celsius and when the temperature is tripled, the pressure will be approximately 1945.71 torr
To find the new pressure when the temperature is tripled, we can use the ideal gas law, which states that the pressure of a gas is directly proportional to its temperature when the volume and the number of particles remain constant. The ideal gas law is given by the equation:
PV = nRT
Where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.
First, we need to convert the initial temperature of 25 degrees Celsius to Kelvin. Adding 273.15 to the Celsius temperature gives us 298.15 K.
Let's assume that the volume, number of moles, and the gas constant remain constant.
If the temperature is tripled, the new temperature would be 3 times the initial temperature, which is 3 * 298.15 K = 894.45 K.
Now, we can set up a proportion to find the new pressure:
P1 / T1 = P2 / T2
Solving for P2 (the new pressure), we get:
P2 = (P1 * T2) / T1
Plugging in the values, we have:
P2 = (650 torr * 894.45 K) / 298.15 K
Calculating this expression, we find:
P2 ≈ 1945.71 torr
Therefore, when the temperature is tripled, the pressure will be approximately 1945.71 torr.
for more questions on pressure
https://brainly.com/question/24719118
#SPJ11