Answers
Explanation:
1)
Equation -
Propane + oxygen → carbon dioxide + water
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
Here,
Products are -
Carbon dioxide (CO₂) Water (H₂O)2)
Equation -
AgNO₃ (aq.) + NaCl (s) → AgCl ↓ + NaNO₃ (aq.)
Double Displacement reactionRelated Questions
Please answer 7-9 i am using alot of my points for this
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Answer:
7... simalair: made of more than 2 things DIffernt: elemants are made of atoms.
Explanation:
difference between acids and bases in terms of ions
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Answer:
The answer will be listed below.
Explanation:
An acid is a substance that produces (H+) as the only positive ion when mixed with water. A base is a substance that produces (OH–) as the only negative ion when mixed with water.
Answer:
An acid increases the concentration, A base is a substance that releases hydroxide
Explanation: A base donates electrons and accepts protons, and acid is a substance that donates protons.
plzzz!!! Write the equation for rusting urgently needed
Answers
Answer:
[tex]Fe_{2} O_{3}[/tex]
Explanation:
{b}
In experiment B. the iron filings weighed 2.0g at the beginning of the experiment
and the iron sulphide produced weighed 2.8g.
Explain this increase in mass.
Answers
Explanation:
The increase in mass is because the iron fillings have combined with a sulfide to produce iron sulfide and so the mass will increase.
In such a reaction like this, the mass of the reactants must be conserved. By so doing, the mass of reactants and products must be the same.
When two substances combine together, their masses added up to that of the individual masses. This helps to conserve the mass.
What holds the two parts of a metal together?
S
E
A
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Answer: The metal is held together by the strong forces of attraction between the positive nuclei and the delocalized electrons (The Electron Sea Model.
Explanation: I hope that helped!
Indicate the answer choice that best completes the statement or answers the question.
The crust and upper mantle make up Earth's
O a. lithosphere Ob. asthenosphere
O d. continents
Oc. core
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LO
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Answer: lithosphere
Explanation:
continents are a part of lithosphere.
core is a structure of earth
Is it OK for people to post fake vacation pics and other fake info on social media? Why or why not? Use facts and details from the Article to back up your answer.
Answers
Answer:
No, It is not okay to pretend on social media.
Explanation:
No, it is not okay for people to post fake vacation pics and other fake info on social media. This is very wrong, as -
This 'all time look good, feel good, have a happening life' approach of social media - implies showing only the positive side & not negative side of people's life. However, in real life is not a bed of roses. Faking things out implies that pretending to be cool has become more important than sharing deep meaningful relationships, & highlights superficial desire of false popularity. It is also harmful to people being communicated this fake image, as they might indulge into any social involvement, on the basis of unreal image of the concerned person.Answer:
it is not ok because there are other people that will look at those pictures and say aww i wish i were them but we all need to exept who we are
hope this helped
mark me brainliest please
Explanation:
The more quickly you change your _____, the more ____ you will have to exert
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Answer:
name, force
Explanation:
How do volcanos such as ojos del salado form?
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Answer:
Deep inside Earth, between the molten iron core and the thin crust at the surface, there is a solid body of rock called the mantle. When rock from the mantle melts, moves to the surface through the crust, and releases pent-up gases, volcanoes erupt.
Explanation: hot molten rock, ash, and gases escape from the volcano
Which two is it brainliest and 100points:)
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Answer:
b c
Explanation:
Answer:C
Explanation:
how many moles of carbon are in 3.0 moles of c6h12o6
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Answer:
i.e. mass of 1 mole of glucose, C6H12O6 = (6 × 12.01 + 12 × 1.01 + 6 × 16.00) g = 180.18 g (using atomic weight data to 2 decimals) 1 mole of carbon atoms weighs 12.01 g and there are 6 moles of C atoms in 1 mole of glucose, so the mass of carbon in 1 mole of glucose = 6 × 12.01 g = 72.06 g.
as water cruise to a temperature of zero degrees Celsius and form ice water molecules tend to
A. move faster apart
B. vibrate rapidly
C. flow more randomly
D. gradually expand
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Answer:
B. vibrate rapidly
Explanation:
Mark above answer as BRILLIANT
is this anwser correct
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Answer:
Yes. It is definitely correct
what is the substance of air
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Answer:
The air in the atmosphere consists of nitrogen, oxygen, which is the life-sustaining substance for animals and humans, carbon dioxide, water vapour and small amounts of other elements (argon, neon, etc.). Higher in the atmosphere air also contains ozone, helium and hydrogen.
Explanation:
:))
what is the name of the structure?
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Answer:
The structure is called Propyl ethanoate
Which is the right answer?
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Answer:
i think its C
Explanation:
A physical property tells how a substance changes into a new substance
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Answer:
false
Explanation:
Which of the following contains the most atoms?
24.305 g Mg
39.098 gk
21.62 g B
9.0122 g Be
Answers
Explanation:
9.0122 g be Maybe, sorry i don't think so
In the above , the sample of B 21.62 g of boron contains the most atoms because it has approximately 2 moles, while the other samples have only 1 mole each.
What is atomsThe molar mass of each element can be found on the periodic table.
The molar mass of Mg (magnesium) is about 24.305 g/mol.The molar mass of K (potassium) is about 39.098 g/mol.The molar mass of B (boron) is approximately 10.81 g/mol.The molar mass of Be (beryllium) is about 9.0122 g/mol.To calculate the number of moles in each sample, we divide the mass of each sample by its respective molar mass:
For Mg: Number of moles = 24.305 g / 24.305 g/mol = 1 moleFor K: Number of moles = 39.098 g / 39.098 g/mol = 1 moleFor B: Number of moles = 21.62 g / 10.81 g/mol ≈ 2 molesFor Be: Number of moles = 9.0122 g / 9.0122 g/mol = 1 moleTherefore, the sample with 21.62 g of boron (B) contains the most atom
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Santiago's car has an overall average speed of 25 cm/s. If he could increase his car's overall average speed by 10%, what would his car's new overall average speed be?
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Given:
The overall average speed = 25 cm/s.
The overall average speed increased by 10%.
To find:
The new overall average speed.
Solution:
We have,
Overall average speed = 25 cm/s.
The overall average speed increased by 10%. So, the new average speed is
New overall average speed = Initial average speed + 10% of initial overall average speed
[tex]\text{New overall average speed}=25+\dfrac{10}{100}\times 25[/tex]
[tex]\text{New overall average speed}=25+2.5[/tex]
[tex]\text{New overall average speed}=27.5[/tex]
Therefore, the new overall average speed is 27.5 cm/s.
Which type of substance have a definite shape and fixed volume?
Solids only
Liquids and solids
Gases only
Liquids and Gases
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Explanation: Happy Thanksgiving!
answer correctly for a brainleist! :)
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Answer:
summer
Explanation:
Why because the earth is around the sun the
what is the total number of electrons found in the valence shell of noble gas in the ground state?
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Answer:
eight
Because the noble gases are the least reactive of all elements, their eight valence electrons are used as the standard for nonreactivity and to explain how other elements interact.
Explanation:
How many atoms is 3.49x1032 moles of KOH?
Answers
Because no. Of atoms = no. Of moles * avogadros no
2.1 x 10⁵⁶ atoms
Further explanationThe mole is the number of particles(molecules,atoms,ions) contained in a substance
1 mol = 6.02.10²³
number of atoms :
[tex]\tt 3.49\times 10^{32}\times 6.02\times 10^{23}=2.1\times 10^{56}[/tex]
write the number 3000,000,000 in scientific notation
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Answer:
3 x 10^9
Explanation:
awnser this they had no subject so i pick that for science for brainliest awnser
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Answer:
B
Explanation:
Name the change of state when a liquid becomes a gas
Answers
Answer: Evaporation
Explanation: the process of turning from liquid into vapor
Changes in which two characteristics can indicate a physical change?
A. Shape
B. Reactivity
O C. State
D. Flammability
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Changes in shape and state are the two characteristics which indicate a physical change.
What are physical changes?Physical changes are defined as changes which affect only the form of a substance but not it's chemical composition. They are used to separate mixtures in to chemical components but cannot be used to separate compounds to simpler compounds.
Physical changes are always reversible using physical means and involve a change in the physical properties.Examples of physical changes include melting,boiling , change in texture, size,color,volume and density.Magnetism, crystallization, formation of alloys are all reversible and hence physical changes.
They involve only rearrangement of atoms and are often characterized to be changes which are reversible.
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What classification should this reaction have? CaC12 + F2 = CaF2 + CI2
Answers
Answer:
Single-Replacement Reaction
General Formulas and Concepts:
Types of Reactions
Synthesis Reactions: A + B → AB Decomposition Reactions: AB → A + B Single-Replacement Reactions: A + BC → AB + C Double-Replacement Reactions: AB + CD → AD + BCExplanation:
Step 1: Define reaction
CaCl₂ + F₂ → CaF₂ + Cl₂
Step 2: Identify backplate
Single-Replacement Reactions: A + BC → AB + C
BC = CaCl₂
A = F₂
AB = CaF₂
C = Cl₂
Due to the presence of dipole-dipole forces, polar covalent molecules like water tend to be _____ at room temperature. *
liquids
gases
metals
Answers
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Actually Welcome to the Concept of the Chemical bonds.
Due to the presence of dipole-dipole forces, polar covalent molecules like water tend to be _____ at room temperature.
The answer is Liquids
Water tends to be liquids at the room temperature.
Which of the following is a balanced equation for the reaction described below?
Aqueous copper (II) chloride reacts with solid aluminum to produce aqueous aluminum chloride and solid copper.
A) CuCl2(aq) + Al(s) = AlCl3(aq) + Cu(s)
B) 3Cu2 Cl(aq) + Al(s) = AlCl3(aq) + 6Cu(s)
C) CuCl(aq) + Al(s) = AlCl(aq) + Cu(s)
D) 3CuCl2(aq) + 2Al(s) = 2AlCl3(aq) + 3Cu(s)
Answers
The balanced equation for the reaction is
3CuCl₂(aq) + 2Al(s) = 2AlCl₃(aq) + 3Cu(s). The correct option is - D) 3CuCl2(aq) + 2Al(s) = 2AlCl3(aq) + 3Cu(s)
From the question,
We are to determine which of the given equation for the described reaction is balanced.
The described reaction is the reaction between aqueous copper (II) chloride and solid aluminum to produce aqueous aluminum chloride and solid copper.
That is,
CuCl₂(aq) + Al(s) = AlCl₃(aq) + Cu(s)
Now, we will balance the above equation, using the smallest whole number coefficients
The balanced equation for the reaction is
3CuCl₂(aq) + 2Al(s) = 2AlCl₃(aq) + 3Cu(s)
Hence, the balanced equation for the reaction is
3CuCl₂(aq) + 2Al(s) = 2AlCl₃(aq) + 3Cu(s). The correct option is - D) 3CuCl2(aq) + 2Al(s) = 2AlCl3(aq) + 3Cu(s)
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