Answer:
Corona
Explanation:
The outermost layer of the sun's atmosphere is called the corona, meaning “crown.” The corona is formed of thin wisps of gas that extend outward into space for millions of miles. It is much less bright than the photosphere, so we can only see it if the rest of the sun is blotted out, for example during a solar eclipse.
Which a balanced chemical equation ? O C 7 H 16 +5O 2 6CO 2 +4H 2 O OB C 7 H 16 +11O 2 7CO 2 +8H 2 O C 7 H 16 +14O 2 7CO 2 +5H 2 O OD . C 7 H 16 +22O 2 14CO 2 +16H 2 O
Answer: [tex]C_7H_{16}+11O_2\rightarrow 7CO_2+8H_2O[/tex]
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
The balanced chemical equation is:
[tex]C_7H_{16}+11O_2\rightarrow 7CO_2+8H_2O[/tex]
Lyle filled a glass bottle completely with water. He put the lid on tightly, then put the water in the freezer to cool it down quickly. Lyle forgot about his water until the next day. When Lyle took his bottle out of the freezer, all the water was frozen solid. The bottle had cracked in several places and was broken. If water in the ground acts like water in the bottle when it freezes, how does water in the ground affect layers of rock and soil
Answer:
The answer would be It breaks them up.
Explanation:
What does a positive H look like on a potential energy diagram?
Answer:
D because i did this last week and got it right.
A positive H indicates that the potential energy of products is higher than the potential energy of reactants.
What is a potential energy diagram?A potential energy diagram is a diagram which shows the energy content of reactants and products as well as the energy changes that occur in a reaction.
A positive H in a reaction indicates that the reaction is endothermic and that products have a higher potential energy than reactants.
Therefore, a positive H indicates that tje potential energy of products is higher than the potential energy of reactants.
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Calculate the molecules in 9.78 moles of oxygen gas
Calculate the number of grams in 2.44e26 molecules of carbon dioxide, CO?
How many atoms are in 3.73e-2 moles of potassium
How many moles are in 11.8 grams of Barium?
Calculate the number of particles in 43.2 grams of N2O
The chemical formula for aspirin is C9H8O4. What is the mass in grams of 0.60 moles of aspirin
Answer:
i am quite unsure what you want me to answer but if you explain it to me w ould live to help
Explanation:
can alluminium sulphate or carbonate test the purity of water
Explanation:
When added to water, aluminum sulfate causes microscopic impurities to clump together into larger and larger particles. These clumps then settle to the bottom of the container and can be filtered out. This makes the water safer to drink
,
A sealed container is heated from 110K to 175K. The gas begins at a volume of 95L, what is the new volume of the gas upon heating?
Given the balanced equation representing a reaction:
Ni(s) + 2HCl(aq) - NiCl(aq) + H2(9)
In this reaction, each Ni atom
1.
loses 1 electron
2.
loses 2 electrons
لما
gains 1 electron
4
gains 2 electrons
Submit
Answer: loses 2 electrons
Explanation:
Ni Atom loses 2 electrons , Option 2 is the correct answer.
What is an Electron ?Electron is a subatomic particle (denoted by the symbol e⁻)
or whose electric charge is negative one elementary charge.
Electrons belong to the first generation of the lepton particle family and are generally thought to be elementary particles because they have no known components or substructure.
The electron has a mass that is approximately 1/1836 that of the proton.
Ni(s) + 2HCl(aq) - NiCl(aq) + H₂(g)
This is an oxidation-reduction (redox) reaction:
2 H⁺ + 2 e⁻ → 2 H (reduction)
Ni - 2 e⁻ → Ni ²⁺ (oxidation)
HCl is an oxidizing agent, Ni is a reducing agent.
Therefore Ni Atom loses 2 electrons , Option 2 is the correct answer.
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A 1.2 M solution of a weak base B is prepared. Using a pH meter, the pH is measured to be 11.82. Calculate the base ionization constant
Answer:
Kb = 3.64x10⁻⁵
Explanation:
First we calculate the pOH of the solution:
pOH = 14 - pHpOH = 2.18Then we calculate [OH⁻]:
pOH = -log[OH⁻][OH⁻] = [tex]10^{-pOH}[/tex][OH⁻] = 0.0066 MFor a weak base solution with a relatively high concentration, we can use the following formula:
[OH⁻] = [tex]\sqrt{Kb*C}[/tex]Where C is the concentration of the weak base solution (1.2 M in this case).
With the formula above we can calculate Kb:
0.0066 = [tex]\sqrt{Kb*1.2}[/tex]Kb = 3.64x10⁻⁵How many formula units are there in 1.34 moles of Lithium Bromide (LiBr)? (write your answer in scientific notation).
Answer:
8.07×10²³ units
Explanation:
6.02×10²³×1.34
8.07×10²³ units
I need help with number 17 pls someone pls ???
Answer:
can you pls say what subject it is pls and thank u
Explanation:
Answer:
glass cup as it can trap oxygen from getting in and out meaning that the fire can't grow
Two charged particles repel each other with a force of F.
How would the magnitude of this force change if the charge on one of the particles was doubled?
- it would decrease to one-fourth of what it was.
- it would decrease to half of what it was.
- it would increase to four times what it was.
- it would increase to twice what it was.
Answer:
it would increase to twice what it was
A fire that is burning wood will release water vapor and carbon dioxide
true or false?
Answer:
true.
Explanation:
The molarity of a solution that contains 28 g KOH (molar mass 56 g/mol) per 250 mL of solution is:
NaOH + HCI → NaCl + H20
*double replacement
*single replacement
*synthesis
*combustion
Answer: a double replacement
Explanation:
QUESTIONS
40. Because stimulants
will be compromised.
your ability to use proper judgment on the road
A. increase your heart rate
B. overload your nervous system
C. slow down your bodily functions
D. usually cause hallucinations
Answer:
B.
Explanation:
can someone pleaze help me
Answer:
I think its the last one
Explanation:
Super sorry if its incorrect.
chelp meeee this is science btw but eahhhh
Answer: KCIO3
Explanation:
The graph shows that it is the lowest at 0 degrees meaning that it has the lowest solubility
Answer:
KOL c
Explanation:
SOMEONE PLEASE HELP ME ON THIS QUESTION ASAP!!! NO LINKS
Answer:
as for my answer is C.....
number 2 ...............
PLEASE HELP ME ASAP!!!!!!!!!!!!!
Convert 544 Calories to Joule
Answer:
2276.1 Joules
Explanation
One calorie is equal to 4.184 Joules. So, 544 calories will be equal to 544*4.184=2276.1 Joules
How may moles are in 88.4 grams of Al(OH)3?
Answer:
1.133mol Al(OH)3
Explanation:
88.4/78.003 = 1.133
Why is it necessary to know the temperature of the reactants and the products of a reaction in order to determine change in the Gibbs free energy of the reaction
Answer:
Free Energy (G) can either increase or decrease for a reaction when the temperature increases. It depends on the entropy (S) change. The change in a quantity is represented by the Greek letter delta. ... Hence, when the temperature increases the numeric value of the free energy becomes larger.
Explanation:
The change in Gibbs free energy (ΔG) of a chemical reaction depends on the initial and final states of the reactants and products, as well as on the temperature and pressure conditions of the reaction.
What is Gibb's free energy?The Gibbs free energy of a reaction tells us whether a reaction is spontaneous or not under given conditions, with negative ΔG values indicating a spontaneous reaction and positive ΔG values indicating a non-spontaneous reaction.
The temperature of the reactants and products is important in determining the Gibbs free energy change because the Gibbs free energy change is related to the enthalpy change (ΔH) and the entropy change (ΔS) of the reaction through the equation:
ΔG = ΔH - TΔS
where T is the temperature in Kelvin.
Thus, the temperature of the reactants and products must be known in order to calculate the Gibbs free energy change of a reaction accurately.
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Which term describes the molecule shown below?
H-C=C-H
ethyne CxHy
A. Unsaturated alkene
B. Unsaturated alkyne
O C. Saturated alkyne
O D. Saturated alkene
Answer:
Saturated alkyne
Explanation:
The hydrocarbons are known as the compounds which is made up of only carbon and hydrogen atoms. They may be saturated or unsaturated based on the number of bonds present. The molecule H-C≡C-H is an Unsaturated alkyne. The correct option is B.
The hydrocarbons in which the carbon and hydrogen atoms are connected through double or triple bonds are known as unsaturated hydrocarbons. Here ethyne is an unsaturated hydrocarbon.
Ethyne is an alkyne which have the C-C and C-H atoms connected through triple and single bonds.
Thus ethyne is option B.
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Earth is currently 150 million km away from the Sun. If Earth was 200 million km away from the Sun, why would it no longer be able to support life?
Answer:
The temperature would be too cold
Explanation:
9.) How many grams of phosphorus can be recovered
from 245.0 g triphosphorus pentanitride?
a.) 139.7 g
b.) 105.3 g
c.) 57.01 g
According to stoichiometry as 162.955 g of phosphorous pentanitride has 92.919 g of phosphorous , thus 245 g of phosphorous pentanitride will have 139.7 grams of phosphorous.
What is stoichiometry?Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.It is important as it helps the chemical reactions to obey law of conservation of mass.
As 162.955 g of phosphorous pentanitride=92.919 g of phosphorous
∴ 245 g of phosphorous pentanitride =245×92.919/162.955=139.702 g.
Thus, 139.702 g of phosphorus can be recovered from 245.0 g triphosphorus pentanitride.
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2 Na + Cl2 --> 2 NaCl
What is the mole ratio of chlorine to sodium chloride?
Answer:
1 : 2 ratio
Explanation:
Chlorine has a coefficient of 1, and sodium chloride has a coefficient of 2.
how do you balance equations?
Answer:
In order to balance the chemical equation, you need to make sure the number of atoms of each element on the reactant side is equal to the number of atoms of each element on the product side. In order make both sides equal, you will need to multiply the number of atoms in each element until both sides are equal
Explanation:
Answer:
what he said so you can give him brainliest
Explanation:
What is the H+ ion concentration of a solution with a pH of 7?
Answer:
10-7mol/l
Explanation:
Answer: 10-7mol/l
Explanation:
BRAINS
Predict the shape of the molecule.
Answer: circle
Explanation: