Answer:
The balanced chemical equation is :
FeCl3 + 3KOH → Fe(OH)3 + 3KCl
explain
how partical of matter attract each other ??
plz help me
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Answer:
Explanation:
Particles of matter attract each other. There's a force that acts on the particulate matter that keeps it together.
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What is the formula for the compound copper (II) sulfate pentahydrateA. C2S3•6H2O
C
2
S
3
•
6
H
2
O
B. CuSO4•6H2O
C
u
S
O
4
•
6
H
2
O
C. C2S3•5H2O
C
2
S
3
•
5
H
2
O
D. CuSO4•5H2O
Answer:
D
copper (II) sulfate pentahydrate
==>
[tex]CuSO _{4}.5H _{2}O[/tex]
The Bohr Model of an atom represents...
O dots in the valence shell, only
O dots in shell 1, only
O dots in specific shells based on electron configuration
O dots and symbols, only
Why have people mostly studied the problem of plastic at the ocean
surface?
*
Answer:
because its polluting the waters and they want to see if its harming the small sea life living in those locations
Explanation:
im 90% sure abt this srry if its wrong
An aqueous solution is 40.0% by mass silver nitrate, AgNO3, and has a density of 1.47 g/mL.
The molarity of silver nitrate in the solution is
M.
Answer:
Molarity = 3.46 M
Explanation:
Given data:
Percentage of silver nitrate = 40.0%
Density of AgNO₃ = 1.47 g/mL
Molarity of solution = ?
Solution:
40% means out of 100g we have 40 g of AgNO₃ and 60g solvent.
Number of moles of silver nitrate = mass /molar mass
Number of moles = 40 g/ 170 g/mol
Number of moles = 0.235 mol
Volume of solution:
Total mass of solution = 100 g
density = 1.47 g/mL which means there are 1.47 gram into 1 mL.
100 g/1 × 1mL/ 1.47 g × 1 L / 1000 mL
0.068 L
Molarity:
Molarity = number of moles / volume in L
Molarity = 0.235 mol / 0.068 L
Molarity = 3.46 M
Which set of characteristics accurately describes the physical properties of electrons in atoms
A negatively charged particle with very little mass
B negatively charged with a mess similar to a proton
C positively charged particle with very little mass
D neutral particle With a mass similar to a proton
Answer: Option (A) is the correct answer.
Explanation:
When there occurs no change in the chemical composition of a substance then it is known as physical property.
For example, mass, volume, density are all physical properties.
Since, the mass of an electron is negligible and an electron holds a negative charge.
Therefore, negatively charged particle with very little mass accurately describes the physical properties of electrons in atoms.
How many grams are in 0.40 mole of NaBH4?
Answer:
The answer is 158.033949. I assume you are converting between grams KMnO4 and mole.
Explanation:
What is the balanced chemical equation for the reaction of aqueous sodium hydroxide and sulfuric acid?
Select one:
a.NaOH(aq) + H2SO4(aq) = H2O(l) + NaSO4(aq)
b.NaOH(aq) + H2SO4(aq) = H2O(l) + Na(SO4)2(aq)
c.2 NaOH(aq) + H2SO4(aq) = 2 H2O(l) + Na2SO4(aq)
d.NaOH(aq) + H2SO4(aq) = H2O(l) + Na2SO4(aq)
Answer:
H2SO4 + 2(NaOH) -----> Na2SO4 + 2(H2O).
Explanation:
The contents of two beakers are described in the table.
Contents of Beakers
Beaker
Contents
Final Substance Formed
X
sugar, water sugar not visible in water
Y
sand, water sand settled at the bottom of the beaker
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How much distance did you travel if you jogged at a speed of 7 miles per hour and you jogged for 1.5 hours?
Answer:
10.5 miles
Explanation:
7x1.5=10.5
Answer:
4.6666667
Explanation:
Which of the following chemical equations is balanced?
а) 4Fe +302 → 2Fe2O3
b) 3Fe +302 + 3Fe2O3
c) 2Fe + 02 → Fe2O3
d) 4Fe + 202 + 3Fe2O3
Answer:
A, 4Fe 3O2 → 2Fe2O3
A nail contains 0.10 moles of iron. How many grams of iron are in the nail?
Answer:
10.8
Explanation:
That's my guess, I hope you figure everything out though.
A nail contains 0.10 moles of iron. Therefore, 5.58g is the mass in gram of iron in the nail. Iron makes up 5% of the Earth's crust.
What is iron?Iron makes up 5% of the Earth's crust and is the second most abundant metal after aluminum, and the fourth most abundant element after oxygen, silicon, and aluminum. Iron, the main component of Earth's core, serves as the most prevalent element on the planet and is relatively abundant in the Sun and in other stars.
The free metal is uncommon in the crust, appearing as domestic iron in basalts in Greenland as well as carbonaceous deposits in the United States, as well as kamacite, a low-nickel meteoric iron. Taenite, a natural alloy of nickel-iron, is found in terrestrial deposits including meteorites.
mass = moles ×molar mass
= 0.10 ×55.8
= 5.58g
Therefore, 5.58g is the mass in gram of iron in the nail.
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Which has the larger atomic mass carbon or neon?
Answer:
Neon
Explanation:
Carbon has an atomic mass of 12
Neon has an atomic mass of 20
determine the hydronium ion concentration of an aqueous solution that has a pH of 4.0
Answer:
Imagewww.chem.purdue.edu › Equilibrium
Calculating the Hydroxide Ion Concentration from pOH
To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter ...
Calculating pH
Calculating hydronium ion ...
Calculating pOH
Calculating hydroxide ion ...
Calculating pKa
People also ask
How do you find hydronium ion concentration when given pH?
The hydronium ion concentration can be found from the pH by the reverse of the mathematical operation employed to find the pH. [H3O+] = 10-pH or [H3O+] = antilog (- pH) Example: What is the hydronium ion concentration in a solution that has a pH of 8.34? On a calculator, calculate 10-8.34, or "inverse" log ( - 8.34).
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Answer:
Average atomic mass of X= 64.25 amu
Explanation:
Abundance of X-64 = 80%
Abundance of X-65 = 15%
Abundance of X-66 = 5%
Average atomic mass = ?
Solution:
Average atomic mass of X = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass) + (abundance of 3rd isotope × its atomic mass) / 100
Average atomic mass of X= (80×64)+(15×65) +(5×66) /100
Average atomic mass of X = 5120 + 975 + 330 / 100
Average atomic mass of X = 6425/ 100
Average atomic mass of X= 64.25 amu.
It snows one inch of snow. Snow is ice. There is now 1 inch of snow on your car and 1 inch of snow on your wooden deck. The sun comes out and all the snow begins to melt. Which melts first? [Assume both get equal amounts of sunlight] *
How many grams of oxygen, O2, required for the complete combustion of 36 grams of pentane, C5H12 at standard conditions?
C5H12 + 8O2 -> 5Co2 + 6 H2O
Answer:
128 grams of oxygen, O₂, is required for the complete combustion of 36 grams of pentane, C₅H₁₂ under standard conditions.
Explanation:
The balanced reaction is:
C₅H₁₂ + 8 O₂ ⇒ 5 CO₂ + 6 H₂O
By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of each compound participate in the reaction:
C₅H₁₂: 1 moleO₂: 8 molesCO₂: 5 molesH₂O: 6 molesBeing the molar masses of the compounds:
C₅H₁₂: 72 g/moleO₂: 32 g/moleCO₂: 44 g/moleH₂O: 18 g/molethen, by stoichiometry, the following quantities of mass participate in the reaction:
C₅H₁₂: 1 mole* 72 g/mole= 72 gO₂: 8 moles* 32 g/mole= 256 gCO₂: 5 moles* 44 g/mole= 220 gH₂O: 6 moles* 18 g/mole= 108 gThen you can apply the following rule of three: if by stoichiometry 72 grams of pentane react with 256 grams of oxygen, then 36 grams of pentane with how much mass of oxygen does it react?
[tex]mass of oxygen=\frac{36 grams of pentane*256 grams of oxygen}{72 grams of pentane}[/tex]
mass of oxygen= 128 grams
128 grams of oxygen, O₂, is required for the complete combustion of 36 grams of pentane, C₅H₁₂ under standard conditions.
Answer:
128 grams of oxygen, O₂, is required for the complete combustion of 36 grams of pentane, C₅H₁₂ under standard conditions.
Explanation:
Did the work trust!
If a gas is cooled from 323.0 K to 273.15 K and volume is kept constant, what final
pressure would result if the original pressure was 0.986 atm?
How many molecules are there in 218.4 grams of C0CI2?
Answer:
10.24 ×10²³ molecules
Explanation:
Given data:
Mass of COCl₂ = 218.4 g
Number of molecules = ?
Solution:
Number of moles of COCl₂:
Number of moles = mass/molar mass
Number of moles = 218.4 g/ 129.84 g/mol
Number of moles = 1.7 mol
1 mole contain 6.022×10²³ molecules.
1.7 mol × 6.022×10²³ molecules / 1mol
10.24 ×10²³ molecules
What is the definition of nucleus?
Answer:
The central and most important part of an object, movement, or group, forming the basis for its activity and growth.
Explanation:
hope this helps!
Answer:
atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom. definition for science.
Explanation:
important part of an object, movement, or group
Smallest particle which possesses the properties of compound called
Answer:
Molecule
Explanation:
Answer:
molecule
Explanation:
............
Besides surface area
and rock composition,
what is the third main
factor in determining
how rock is affected
by weathering?
A weight
B. color
C Climate
D. density
Answer:
A
Explanation:
Besides surface area and rock composition, the climate is the third main factor in determining how rock is affected by weathering. Therefore, option (C) is correct.
What is weathering?Weathering can be described as the deterioration of rocks, soils, and minerals through contact with water, gases, and biological organisms. Weathering takes place in situ and is distinct from erosion, which includes the transport of rocks and minerals by agents such as snow, water, ice, wind, waves, and gravity.
Weathering is divided into physical weathering and chemical weathering. Physical weathering includes the breakdown of rocks and soils through the mechanical effects of ice, heat, water, or other agents.
Chemical weathering includes the chemical reaction of water, gases, and biologically formed chemicals with rocks and soils. The materials left after the rock breaks combine with organic matter to form soil.
Many landforms and landscapes on the surface of the earth are the results of weathering processes.
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Chemistry Conversion: Convert 3.0099 dumps to wigs. 6375.23 dumps = 1 wig Round your answer to 5 sig figs. dumps and wigs is not a real unit just used for example.
Answer:
There are 0.00047212 wig in 3.0099 dumps.
Explanation:
In this problem, we need to convert 3.0099 dumps to wigs.
6375.23 dumps = 1 wig (given)
1 dump = (1/6375.23) wig
To convert 3.0099 dumps to wigs, multiply 3.0099 by (1/6375.23).
3.0099 dumps = [tex]\dfrac{1}{6375.23}\cdot3.0099[/tex]
= 0.00047 wig
Hence, there are 0.00047212 wig in 3.0099 dumps.
In roses, the color red is dominant (R), and the color white is recessive (r). Based on the Punnett Square, what is the probability ratio that the roses will be white?
Answer:
0.25
Explanation:
From the given information:
The dominant trait R = red color; &
The recessive trait r = white
If a heterozygous traits Rr crosses with a dominant trait RR;
The Punnet square will be as follows:
R r
R RR Rr
R RR Rr
Thus all the flowers are red and there is 50% dominant red rose flowers (RR) and 50% heterozygous red rose flowers (Rr).
Let assume that two heterozygous traits (Rr) cross together; Then the punnet square is:
R r
R RR Rr
r Rr rr
From the above punet square, we have:
0.25 dominant red rose flowers
0.5 heterozygous red rose flowers;
0.25 recessive white rose flowers.
Which best describes the Group 1 metals?
a) hard or soft?
b) high density or low density?
c) high melting point or low melting point?
d) reactive or unreactive, with water?
Answer:
a) Soft
b) low density
c) low melting point
d)reactive with water
What is the atomic mass of carbon if it has 6 protons, 8 neutrons, and 6 electrons in it?
Answer:
14 amu
Explanation:
The atomic mass is equal to the sum of protons and neutrons. There are 6 protons and 8 neutrons. 6+8=14amu
A polar solute will dissolve in _____.
a polar solvent
a nonpolar solvent
gasoline
sugar water
Answer:
Polar solvents because polar substances are likely to dissolve in polar solvents.
Explanation:
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Answer:
a polar solvent
The diagram shows a homemade car being pushed with a force of 25 N. The force causes the car to move at a constant speed of 3 m/s2. What will happen if the force is changed to 35 N?
Answer:
The acceleration of the car will increase drastically
Explanation:
Based on newtons second law of motion, the force applied on a body is directly proportional to the product of its mass and acceleration;
Force = mass x acceleration
Since the mass of the car is constant, an increase in force will cause an increase in acceleration.
A decrease in the force will impact a lesser acceleration on the motor car.
This way, the change in velocity of the body per unit of time will increase drastically.
please help I need the awnser quick will give brain to first to awnser
true it false: Liquid molecules have more room to slide past one another which ls why they can easily change shape
Answer:
[tex] \huge \boxed{TRUE}[/tex]
Explanation:
Liquid molecules have more room to slide past one another which is why they can easily change shape.