Balance the equations of Al(OH)3+HNO3----Al(NO3)3+H2O
Answer:HNO3 + Al(OH)3 → Al(NO3)3 + H2O
Word equation: Nitic acid + Aluminum hydroxide → Aluminum nitrate + water
Type of Chemical Reaction: For this reaction we have a neutralization reaction.
Balancing Strategies: In this neutralization reaction we have HNO3 reacting with Al(OH)3.
Be sure to carefully count the O and H atoms on both sides of the equation, otherwise this will be a difficult equation to balance.
Hint 1
Start by balancing the N atoms.
Hint 2
Next balance the H atoms.
This is the balence form of it
3HNO3+ Al(OH)3 = Al(NO3)3 +3H2O
Explanation:
how does latitude affect the temperature in an area
Answer:
Latitudes are used to indicate a precise location of any feature on the earth's surface.
Temperature changes with latitudes .At higher latitudes, the Sun's rays are less direct. The farther an area is from the Equator, the lower its temperature. At the poles, the Sun's rays are least direct.Near the equator sun's rays are perpendicular resulting into very high temperatures. Generally, around the world, it gets warmer towards the equator and cooler towards the poles.
Once more i need help
It's the same paragragh/field trip except a different question
Field Trip to the Blacksmith Shop
Students at a middle school went to a local historical site on a field trip. While visiting the site they watched a demonstration in a blacksmith shop. Blacksmithing is the simplest form of forging and it is one of the methods by which metal was first worked. The metal to be forged is first heated to red heat in the fire of a forge, and then is beaten into shape on a metal anvil with sledges or hammers. Steel is used in the forging process. The material we call steel is a mixture of different metals. The element iron (Fe) makes up a large percentage of all steels, generally composing more than 75 percent of the mix by percent of total mass. Steel is made from iron, and in the process, some element percentages are reduced in the alloy composition (such as carbon and silicon), and other elements (such as chromium, nickel, and tungsten) are added, depending on the type of steel needed.
As the iron is worked on the anvil, the color changes from red to gray. Which of the following is happening to the molecules as the iron cools down?
The atoms move more slowly and closer together.
The atoms move more quickly and closer together.
The motion of the atoms stay mostly the same.
The motion of the atoms become very orderly.
Answer:
The atoms move more quickly and closer together.
Which characteristic of planets depends upon its distance from the Sun?
Answer:
I think its the length of its year
Answer:
the length of its year
Explanation:
If oil and water have opposite intermolecular forces, why do they seem to mix at the border between them?
Answer:
The Chemistry Explanation
Oil and water don't mix because water molecules are not attracted to oil molecules. When the Alka-Selzer tablet is dropped in the oil and water, it sinks to the bottom because it is more dense than oil and more dense than the water.
Intermolecular forces such as dipole-dipole forces, London dispersion forces exist between molecules and these depend on strength of electronegativity of molecule. Therefore, oil and water mix at the border.
What is intermolecular forces of attraction?Intermolecular forces of attraction is force of attraction that make two molecule come closer. Intermolecular forces of attraction is directly proportional to the electronegativity of the molecule.
Size of electronegative molecule is small so, if any other molecule or molecule come into contact with this molecule then this molecule attract the electron of other molecule very efficiently and therefore the force between the molecule increases.
Oil has weaker intermolecular forces than water. This makes the intermolecular forces in oil easier to break, and keeps the molecules stuck together in a liquid state.
Therefore, oil and water mix at the border.
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Please help me ASAP!!
Chemistry
Based on the information in the table, which of the following arranges the bonds in order of decreasing polarity?
Answer:
F,Cl,N,I,Se,H
Explanation:
polarity increases as electronegativity increases i guess so that is supposed to be the answer
HNO3 + H2SO4 + NO
You now have these half-reaction equations:
3e + HNO3 → NO
S→ H2SO4 + 6e
Which factor will you use for the top equation?
Which factor will you use for the bottom equation?
Explanation:
The two half equations are;
3e + HNO3 → NO
S→ H2SO4 + 6e
When balancing half equations, we have to make sure the number of electrons gained is equal to the number of electrons lost.
Which factor will you use for the top equation?
We multiply by 2 to make the number of electrons = 6e
Which factor will you use for the bottom equation?
We multiply by 1 to make the number of electrons = 6e
Answer:
2
1
Explanation:
9. If 1,785 cal of heat is added to a 343 g sample of water (specific heat = 4.18J/g °C) at 1202,
what is the *final temperature of the water? *
(1 Point)
15.76°C
031'c
18.24°C
1.24°C
Answer:
17.21°C
Explanation:
Using the following formula;
Q = m × c × ∆T
Where;
Q = amount of heat in joules
m = mass of substance in grams
c = specific heat capacity of water (4.184 J/g°C)
∆T = final temperature - initial temperature
According to the information provided in this question,
Q = 1,785 cal
1 cal = 4.184 J
1785 cal = 7468.4J
m = 343grams
c = 4.18J/g °C
initial temperature = 12°C
Using Q = m × c × ∆T
7468.4 = 343 × 4.18 × (T - 12)
7468.4 = 1433.74(T - 12)
7468.4 = 1433.74T - 17204.88
7468.4 + 17204.88 = 1433.74T
24673.28 = 1433.74T
T = 24673.28 ÷ 1433.74
T = 17.21°C
Which chemical equation is correctly balanced?
O Mg(NO3)2 + 2K2CO3 →→ MgCO3 + 2KNO3
O Mg(NO3)2 + K2CO3 → MgCO3 + 2 KNO3
2Mg(NO3)2 + K2CO3 - 2MgCO3 + KNO3
Mg(NO3)2 + K2CO3
MgCO3 + KNO3
Answer:
Mg (NO3)2+ K2CO3 ⇒ Mg CO3 + KNO3
Mg=1 ,N =2, O =6 +3 9 ,K =2 ,C=1 , (reactant side)
Mg =1, C = 1 ,O = 3+3 = 6 , K= 1., N =1 (product side)
Mg(NO3)2 + K2CO3 ⇒ Mg CO3 + 2KNO3
Mg =1 , C = 1, O =3+6=9, K = 2 IN product side
ANS:
Mg (NO3)2 +K2CO3 ⇒ MgCO3 +2 KNO3
Explanation:
The the _____ temperature _____ the the air molecules move. (Choose 2) higher, faster lower, faster lower, slower higher, slower
Answer:
The higher the temperature the faster the air molecules move. / The lower the temperature the slower the air molecules move.
Explanation:
Both answers work. Higher temp = more energy = moving faster, and the opposite applies. Lower temp = less energy = moving slower.
If 10.23 moles of NH3 were produced, how many moles of N2 would be required?
Answer:
the number of moles of N_2 required is 5.12 moles
Explanation:
The computation of the number of moles of N_2 required is shown below:
N₂ + 3H₂ → 2NH₃
Here the nitrogen moles and hydorgen would be compared
NH₃ : N₂
2 : 1
10.23 : 1 ÷ 2 × 10.23 = 5.12mol
Hence, the number of moles of N_2 required is 5.12 moles
Therefore the same would be considered and relevant too
Please help this is Chemistry!
Answer:
Number 3
Explanation:
*extra points*
Balancing chemical equations - I'm having some trouble with this question, can someone please help me out?
Answer:
3h2so4+2b(oh)3=b2(so4)3+6h2o
what is the shape of graphite
Answer:
The molecular formula lists the symbol of each element within the compound followed by a number (usually in subscript). The letter and number indicate how many of each type of element are in the compound. If there is only one atom of a particular element, then no number is written after the element.
Which organic prefix is matched with the number of carbon atoms that it represents?
Answer:heat-,7
Explanation:According to table P, heat- is an organic prefix used to represent 7 carbon atoms
Hept-7 is an organic prefix matched with the number of carbon atoms that it represents.
The correct option is A.
What is an organic prefix?The prefix is the words that are attached prior to the words to modify their meaning.
In organic chemistry, prefixes are added to show the number of carbon present in any compound.
Hepta is used for 7, the same Octa is for eight, Penta is for five, Hexa is for six, and so on.
Thus, the correct option is A, Hept-7.
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Soil that contains soil, sand, shells, decaying matter, is an example of which type of mixture?
Heterogeneous
Homogeneous
Describe how electrons travel when a positively charged object is grounded.
1. How many particles are present in 800 grams of copper (II) sulfide, CuS? The molar mass of CuS is 95.611 g/mol.
2. How many particles are present in 50 grams of aluminum oxide, Al2O3? The molar mass of Al2O3 is 101.961 g/mol.
3. How many particles are present in 150 grams of calcium oxide, CaO? The molar mass of CaO is 56.077 g/mol.
4. How many particles are present in 39 grams of sulfuric acid, H2SO4?
5. How many particles are present in 345 grams of hexane, C6H14?
At a constant temperature the pressure on a 10.0L sample of gas is charged from 1140 torr to 1.00 atm. What is the new volume of gas sample?
Answer:
15 L
Explanation:
From the question given above, the following data were obtained:
Initial volume (V₁) = 10 L
Initial pressure (P₁) = 1140 torr
Final pressure (P₂) = 1 atm
Final volume (V₂) =?
Recall:
1 atm = 760 torr
The new (i.e final) volume of the gas can be obtained as follow:
Initial volume (V₁) = 10 L
Initial pressure (P₁) = 1140 torr
Final pressure (P₂) = 760 torr
Final volume (V₂) =?
P₁V₁ = P₂V₂
1140 × 10 = 760 × V₂
11400 = 760 × V₂
Divide both side by 760
V₂ = 11400 / 760
V₂ = 15 L
Therefore, the new volume of the gas is 15 L
How Many milligrams are in 94.2g?
Answer:
94,200 milligrams in 94.2 grams
To get answer multiply 94.2 by 1000.
Answer:
there is 94,200 milligrams in 94.2 grams
Explanation:
hope this helps, because 1,000 milligram is 1 gram
so 1,000x94.2(grams)=94,200
HOPE THIS HELPS A LITTLE
Calculate the mass of 5.22 mol of He.
Answer:
The mass is 20, 89 grams of He.
Explanation:
We calculate the weight of 1 mol of He, from the atomic weight of each element obtained from the periodic table: Weight 1 mol He= 4, 0020602 g. 1 mol He-----4, 0020602 g. 5,22 mol He---x= (5,22 mol He x4, 0020602 g)/ 1 mol He= 20, 89 g
hope this helps also can i get brainliest
The mass of 5.22 mol of He will be 20.84 grams.
We have 5.22 mol of He.
We have to calculate its Mass.
Which element is represented by symbol He ?Helium is a chemical element with the symbol He and atomic number 2. It is a gas which is colorless, odorless, tasteless, non-toxic, inert and monatomic.
According to the question -
Number of moles of Helium = 5.22 mol
Now, I mole of Helium will have its mass equal to its Atomic weight. Therefore -
Mass of 1 mole of He = 4.002602 g
So, the mass of 5.2 mol of He will be = 5.2 x 4.002602 = 20.84 grams
Hence, the mass of 5.22 mol of He will be 20.84 grams.
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In the photo, what does the green line with the arrow represent?
M
Answer:
if im not mistaken that's a jetstream
a) if each substance above is heated at the same rate and same mass, which of the above has a smaller specific heat? how do you know?
b) at 2 minutes which one of the above has had the most energy added?
Answer:
I think B would be alcohol but A I'm not to sure
Which statement BEST describes electromagnetic and mechanical waves?
A.
Electromagnetic waves and mechanical waves both do not require a medium.
B.
Mechanical waves require a medium and electromagnetic waves do not.
C.
Electromagnetic waves require a medium and mechanical waves do not.
D.
Mechanical waves and electromagnetic waves both require a medium.
Answer:
C I believe
Explanation:
is there an ultimate particle?
Answer:
We learn in school that matter is made of atoms and that atoms are made of smaller ingredients: protons, neutrons and electrons. Protons and neutrons are made of quarks, but electrons aren’t. As far as we can tell, quarks and electrons are fundamental particles, not built out of anything smaller.
Answer:
The recent discovery declared that the finding is very close to the ultimate particle called Higgs particle. This is believed to be the basic building block of the universe.
Explanation: hope this help
Why do atoms of different elements vary in size?
Answer:
As you go down the periodic table, usually atoms get bigger because n gets bigger (there are electrons in higher shells). Effective nuclear charge does get bigger too going down the periodic table, but this effect is smaller than the change in shell.
Explanation:
HELP PLEASE
A positive test for a base occurs when
A) red litmus remains red
B) blue litmus remains blue
C) blue fitmus turns red
D) red litmus turns blue
Answer:
D) red litmus turns blue
Explanation:
Took this test, hope it helps! :)
If i add water to orange juice is that a physical change or chemical change?
Answer:
Nope, not a chemical change.
Explanation:
i hope this helps ok bye luv!!!!!!!!!!!!!!!!!!!!
What do YOU think? Is the movement to 100% renewable energy possible? Why, or why not?
Answer:
no. Because there is always that one person who doesn't want to
lable each change as chemical or physical
Answer:
we need the picture
Explanation: