Answers
2. C = 18
H = 36
O = 2
3. B
4. C
5. O = 6
6. Yes
C=18
H=36
O=2
hope this helps
Related Questions
Please help me ASAP!!
Chemistry
Based on the information in the table, which of the following arranges the bonds in order of decreasing polarity?
Answers
Answer:
F,Cl,N,I,Se,H
Explanation:
polarity increases as electronegativity increases i guess so that is supposed to be the answer
Please help me with this!!?
Answers
Answer:
The last answer is right they get half of the mothers genes and half of the fathers genes.
Balance the equations of Al(OH)3+HNO3----Al(NO3)3+H2O
Answers
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:
Which of the following correctly shows the bond polarity?
please help me asap!
Answers
c. H-I>Se-N>Cl-F
that is the answer i think...
Soil that contains soil, sand, shells, decaying matter, is an example of which type of mixture?
Heterogeneous
Homogeneous
Answers
Why do atoms make up the basic building blocks of matter?
Answers
Atoms are the basic building blocks of ordinary matter. Atoms can join together to form molecules, which in turn form most of the objects around you. The protons and neutrons cluster together in the central part of the atom, called the nucleus, and the electrons 'orbit' the nucleus.
Hope this helped!
When energy changes from one form to another, some energy is always changed to
ОА.
sound.
ОВ.
heat.
Ос.
light.
OD
electricity
Answers
Answer:
OB heat
Explanation:
Hope this helps
Please help this is Chemistry!
Answers
Answer:
Number 3
Explanation:
The the _____ temperature _____ the the air molecules move. (Choose 2) higher, faster lower, faster lower, slower higher, slower
Answers
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.
is there an ultimate particle?
Answers
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
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?
Answers
Use these magic triangles they will help you a lot
Identify the following as an element or compound: sucrose/sugar (C12 H22 O11)
Answers
Answer:
Explanation:
its a compound
define adhesion and give an example?
Answers
Similar to Cohesion, adhesion is the attraction between molecules of different substances . Water uses adhesion when it's attraction to another substance is greater than the water's attraction to itself. if you have ever dropped a cup of water on a hardwood floor,you know that it spreads out instead of foaming beads.
Josh used several different liquid chemicals for an experiment in his chemistry class. After completing the experiment, the chemicals were no longer usable. Josh carefully poured each chemical into a bottle marked "Waste" and placed the lid back on the bottle. Did Josh use the correct procedure?
A.
No; different types of chemical waste should not be mixed together.
B.
No; the chemicals should have been poured down the sink.
C.
No; the chemicals should have been poured into the trash can.
D.
Yes; the chemicals were stored in the proper place.
Answers
This should be complete common sense, but the answer B is incorrect because chemical SHOULD NOT be poured down a drain because It can go out into the sewer. C is wrong because it can go through the trash can or into the dump and contaminate other things.
Why do atoms of different elements vary in size?
Answers
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:
True or False Friction can be reduced by lubricating or changing the shape of objects
Answers
Hope this help:)
Answer:
True
Explanation:
If you cover cup in soap it will be a lot more slippery than it was before, if you reshaped a car wheel to have less treads then it would have much less friction.
Calculate the mass of 5.22 mol of He.
Answers
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.
To solve more questions on Mole concept, visit the link below-
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Which elements in the image are likely
to lose electrons in an ionic bond
A. neon and chlorine
B. calcium and
potassium. C.neon and
potassium
D. There is not enough information to tell
Answers
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.
Answers
Answer:
The atoms move more quickly and closer together.
Which organic prefix is matched with the number of carbon atoms that it represents?
Answers
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.
Learn more about organic prefix
https://brainly.com/question/14161952
what is the shape of graphite
Answers
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 characteristic of planets depends upon its distance from the Sun?
Answers
Answer:
I think its the length of its year
Answer:
the length of its year
Explanation:
lable each change as chemical or physical
Answers
Answer:
we need the picture
Explanation:
is h2o a pure element or a compound
Answers
hydrogen and oxygen, that is 2 elements making h2o a compound!!!
*extra points*
Balancing chemical equations - I'm having some trouble with this question, can someone please help me out?
Answers
Answer:
3h2so4+2b(oh)3=b2(so4)3+6h2o
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.
Answers
Answer:
C I believe
Explanation:
In the photo, what does the green line with the arrow represent?
M
Answers
Answer:
if im not mistaken that's a jetstream
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
Answers
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
Given the balanced equation:
KNO3 (s) + 34.89 kJ H20, K+ (aq) + NO3 - (aq)
Which statement best describes this process?
A) It is endothermic and entropy increases.
B) It is endothermic and entropy decreases.
C) It is exothermic and entropy increases.
D) It is exothermic and entropy decreases.
Answers
[tex]KNO3 (s)[/tex] → [tex]K+ (aq) + NO_3^- (aq)[/tex] is an endothermic reaction and entropy decreasing.
What is an endothermic reaction?An endothermic reaction is any chemical reaction that absorbs heat from its environment.
This reaction [tex]KNO3 (s)[/tex] → [tex]K+ (aq) + NO_3^- (aq)[/tex] is absorbing heat from the surrounding. Endothermic reactions are characterized by positive heat flow (into the reaction) and an increase in enthalpy (+ΔH).
It will lower the entropy of the surroundings by absorbing energy. In doing so the surroundings will lose energy, and randomness is decreased. These reactions are not spontaneous.
Hence, option B is correct.
Learn more about the endothermic reaction here:
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True or false: Breaking down water into the elements hydrogen and oxygen is an example of a chemical change.
Answers
Answer:
True.
Explanation:
When water is decomposed into hydrogen and oxygen, chemical bonds are broken, chemical energy is released, and two new substances are formed from one.