Answer:
HCI+Ca(OH)2
Explanation:
Predict what will be observed in each experiment below. experiment predicted observation.
1. A student sees tiny bubbles clinging to the inside of an unopened plastic bottle full of carbonated soft drink. The student squeezes the bottle.
a. The bubbles will shrink, and some may vanish.
b. The bubbles will grow, and more may appear.
c. The bubbles won't change.
d. I need more information to predict what will happen to the bubbles.
2. A student has two unopened cans containing carbonated water. Can A has been stored in the garage () and can B has been stored in the fridge (). The student opens one can at the time, both cans make a fizz.
a. Can A will make a louder and stronger fizz than can B.
b. Can B will make a louder and stronger fizz than can A.
c. The fizz will be the same for both cans.
d. There is not enough information to predict which can will make the louder fizz.
Answer:
The correct answer is -
1. a) The bubbles will shrink, some may vanish.
2. a) Can A will make a louder and stronger fizz than can B.
Explanation:
In the first question, it is given that the bottle is not opened and therefore, squeezing the bottle filled with a carbonated drink will increase the pressure on the carbonated liquid which forces the bubbles to dissolve or displace or vanish as it moves to empty space.
Thus, the correct answer would be - The bubbles will shrink, some may vanish
In the second question, there are two different conditions for two different unopened cans of carbonated water that are different temperatures one at the garage with higher temperature and one in the fridge at low temperature. As it is known that higher the temperature less will be solubility of gas in liquid so gas in can A will be less soluble which means it has more gas and it will make louder and stronger fizz than B which was stored at low temperature.
thus, the correct answer would be - Can A will make a louder and stronger fizz than can B.
"How many grams of CaCl2 would be dissolved in 1.0 L of a 0.10 M solution of CaCl2? "
Answer:
2365 g
Explanation:
The mass of CaCl₂ will be 110.98 grams, this can be calculated by using the molarity formula.
MolarityIt is defined as the ratio of a number of moles of solute to the volume of solution in liters.
It is given by:
M= n/V
What information do we have?
V= 1.0 L
M= 1.0 M
Molar mass of CaCl₂ = 110.98g/mol
To find:
m=?
M= n/V
n= M/V
n= 1 mole
A Number of moles is the ratio of mass over the molar mass.
n = m/ M
1 mole= m / 110.98 g/mol
m= 110.98 grams
Thus, the mass of calcium chloride is 110.98 grams.
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The value of Avogadro number is
How does air flow when a low-pressure center occurs in the
atmosphere?
Answer:
A
Explanation:
It is so because the low air pressure create vacuum and the air from high pressure area move toward the low air pressure.
What is the skin's natural oil?
a. sweet
b. Melanin
c. sebum
d. vegetable oil
help
Answer:
C. Sebum
Explanation:
C. Sebum
Which change to this process would shift the equilibrium to produce the
maximum possible amount of S03?
2502 +02 2503 + energy
A. Increasing the temperature
B. Decreasing the pressure
C. Removing the O2 as it forms
D. Removing the SO3 as it forms
The change which shift the equilibrium to produce the maximum possible amount of SO₃ is decreasing the temperature.
What is equilibrium principle?According to this principle if any external stress is applied in the equilibrium state then equilibrium will shift towards that side where the external stress will decreases.
In the given chemical equation energy is releases in the form of heat, then in this condition:
Increase in temp will shift the reaction towards the reactant side.Decreasing the pressure will also lead to the decrease in the temperature and in this condition reaction will shift towards product side and will increases the amount of SO₃.Removing the oxygen and SO₃ will not help in increasing the amount of SO₃.Hence decreasing the temperature will produce maximum SO₃.
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Consider the structures of benzaldehyde and benzyl alcohol. Benzene ring with a CH2OH attached Benzene ring with an aldehyde group attached. These two structures can be distinguished by proton NMR. The hydrogen of the aldehyde group will appear downfield between 9 and 11 ppm and there is Choose... for the alcohol. Also, the methylene hydrogens in the benzyl position of the alcohol will be the only significant Choose... peak between the two structures.
Answer:
no equivalent peak, upfield between 0 and 3 ppm
Explanation:
NMR stands for nuclear magnetic resonance. It is a spectroscopic technique that is used for observing the local magnetic fields around an atomic nuclei. It is used to study the chemical, physical and biological properties of the matter.
In the context, the structures of the benzaldehyde and the benzyl alcohol are distinguished by the proton NMR. The hydrogen atom of aldehyde appears downfield between 9 and 11 ppm and also there is no equivalent peak for the alcohol.
The methylene hydrogens will only be significant upfield between the 0 and 3 ppm peak between the given structures.
Looking across period 4 of the periodic table, potassium (atomic number 19) is followed by calcium (atomic number 20), which is followed by scandium (atomic number 21). Which element should have the largest atomic radius?
how many moles of C8 H18 are present in a 546.23 gram sample?
Answer:
Given:
Compound C8H18
mass of compound- 546.23 gram
To find:
number of moles =?
Solution:
let's find out the molar mass of C8H18= 12×8+18×1 = 114 gram/mole
Number of moles= given mass/molar mass
=546.23/114
= 4.7818436487 moles.
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Please..................
Sorry so what I think u should do is ask your teach or look up on how to do this problem
i need help with this please
Answer:
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Explanation:
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Hydrochloric acid reacts with sodium hydroxide to form water and sodium chloride. Hydrochloric acid is an extremely acidic, clear, corrosive liquid. Sodium hydroxide is a very basic white solid.
What can be known about the reactants of this reaction?
They will be clear.
They will not have the properties of sodium hydroxide or hydrochloric acid.
They will be corrosive.
They will have the properties of sodium hydroxide or hydrochloric acid.
The answer is C.
You're welcome!
Calculate the molecular weight of guanylate at pH 7. Show your work. Draw the structures of three different tautomers of hypoxanthine. One of the nonstandard nucleotides that appears moderately often in rRNA and tRNA is dihydrouridine. Which carbon atoms within the uracil moiety of this nucleotide have two hydrogens each attached to them
Answer:
Explanation:
The molecular formula for Guanylate is [tex]\mathbf{C_{10} H_{14} N_5O_8 P}[/tex]
This is calculated by the addition of the atomic weight of all the atoms taking part in the molecule.
i.e. (10 × C) + (14 × H) + (5 × N) + ( 8 × O) + (1 × P)
= (10 × 12) + (14 × 1) + (5 × 14) + ( 8 × 16) + (1 × 30)
= 120 + 14 + 70 + 128 + 30
= 362 g/mol
The diagram for the tautomers of hypoxanthine can be seen in the image attached below.
Dihydrouridine is available and can be seen in tRNAs and rRNAs. It is an exceptionally preserved and adjusted base. It is a pyrimidine nucleoside that is shaped by the expansion of two hydrogen atoms to uridine. By the expansion of two hydrogen atoms to uridine makes it completely soaked and no presence of any two-fold or double bond.
Catalytic reduction of carbon-carbon double bonds in Dihydrouridine synthase occurs at positions 5 and 6 on the uridine base.
Hence, 5 and 6 carbon particles inside the uracil moiety of this nucleotide have two hydrogens each connected to them.
PLEASE ANYONE KNOW IT!!!!!
I think it's ethane. It might be wrong tho.
sea stars have radial symmetry .what does this mean?
Answer: Echinoderms usually have five appendages (arms or rays), but there are some exceptions. Radial symmetry means that the body is a hub, like a bicycle wheel, and tentacles are spokes coming out of it (think of a starfish).
Explanation:
Answer:
uesssf
Explanation:
hnjhj
seven carbon chain with CH3 attached to second and third carbon
Answer:
2,3-dimethylheptane.
CH₃ - CH - CH-CH₂-CH₂-CH₂-CH₂
| |
CH₃ CH₃
Explanation:
Hello there!
In this case, according to the given instructions, it is possible to draw the organic chemical structure by connecting seven carbon atoms along the parent chain with two methyl substituents at the second and third carbon atoms; thus, the resulting structure is:
CH₃ - CH - CH-CH₂-CH₂-CH₂-CH₂
| |
CH₃ CH₃
Furthermore, the name would be 2,3-dimethylheptane according to the IUPAC rules for nomenclature.
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How many moles is 130g of CoCl2
Answer:
1 mol
Explanation:
The mass of CoCl2 is 129.83. 130 divided by the mass is 1. This is to convert the mass given to mols that exist in the sample.
Which property among the following is best suitable for metalloids
1 Brittle and behaves like a non-metal
2 Have the property of metals and non-metals
3 Malleable and ductile
4 Conducts electricity and behaves like a metal
Answer:
2. Have the property of metals and non-metals
Explanation:
A metalloid is a substance that posseses the characteristics of both metals and non-metals. In other words, it can be said to be an intermediary between metals and nonmetals.
According to this question, a metalloid
Among the theories of man's state of nature,which is/are the most credible/Reasonable?,
trees... they bring life nd without trees, there wouldnt be life
Changing the size and shapes of wood would be a chemical change.
O True
O False
Answer:
False.
Explanation:
False because there's no chemicals making change. its a physical change
Q: How does the starting
position affect the speed of a
ball rolling down a ramp?
I NEED HELPP PLSSS ASAP!!!
The force of gravity points straight down, but a ball rolling down a ramp doesn't go straight down, it follows the ramp. Therefore, only the component of the gravitational force which points along the direction of the ball's motion can accelerate the ball. The other component pushes the ball into the ramp, and the ramp pushes back, so there is no acceleration of the ball into the ramp. If the ramp is horizontal, then the ball does not accelerate, as gravity pushes the ball into the ramp and not along the surface of the ramp. If the ramp is vertical, the ball just drops with acceleration due to gravity. These arguments are changed a bit by the fact that the ball is rolling and not sliding, but that only affects the magnitude of the acceleration but not the fact that it increases with ramp steepness.
Consider the following reaction:
Mg(s) + 2 HCl (aq) → H2(g) + MgCl2(aq)
If 3.65 mol of magnesium and 3.65 mol of hydrochloric acid are reacted, how many
moles of hydrogen gas are produced?
Answer: 1.825 moles of hydrogen gas are produced.
Explanation:
The balanced chemical equation is:
[tex]Mg(s)+2HCl(aq)\rightarrow H_2(g)+MgCl_2(aq)[/tex]
According to stoichiometry :
2 moles of [tex]HCl[/tex] require = 1 mole of [tex]Mg[/tex]
Thus 3.65 moles of [tex]HCl[/tex] will require=[tex]\frac{1}{2}\times 3.65=1.825moles[/tex] of [tex]Mg[/tex]
Thus [tex]HCl[/tex] is the limiting reagent as it limits the formation of product and [tex]Mg[/tex] is the excess reagent.
As 2 moles of [tex]HCl[/tex] give = 1 mole of [tex]H_2[/tex]
Thus 3.65 moles of [tex]HCl[/tex] give =[tex]\frac{1}{2}\times 3.65=1.825moles[/tex] of [tex]H_2[/tex]
Thus 1.825 moles of hydrogen gas are produced.
Kingsley then adds 44.12 mL of NaOH to 250.00 mL of the HCOOH solution. The neutralization reaction resulted in 0.091 moles of HCOOH and 0.036 moles of HCOO- left in solution. Determine the pH of the resulting solution.
Answer:
pH = 3.34
Explanation:
We can calculate the pH using Henderson-Hasselbach's equation:
pH = pKa + log[tex]\frac{[HCOO^-]}{[HCOOH]}[/tex]for HCOOH, pKa = 3.75.
We can calculate [HCOO⁻] and [HCOOH] using the given number of moles for each one and the final volume:
Final Volume = 44.12 mL + 250 mL = 294 mL294 mL / 1000 = 0.294 L[HCOO⁻] = 0.036 mol / 0.294 L = 0.122 M[HCOOH] = 0.091 mol / 0.294 L = 0.310 MThen we proceed to calculate the pH:
pH = 3.75 + log[tex]\frac{0.122}{0.310}[/tex]pH = 3.34The pH of the resulting solution is 3.34.
Calculation of the pH of the solution:Since
Final Volume = 44.12 mL + 250 mL = 294 mL
Now
= 294 mL / 1000
= 0.294 L
Now
[HCOO⁻] = 0.036 mol / 0.294 L = 0.122 M
[HCOOH] = 0.091 mol / 0.294 L = 0.310 M
So, the pH should be
= 3.75 + log0.122/0.310
= 3.34
hence, The pH of the resulting solution is 3.34.
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When a sample of gas was placed in a sealed container with a volume of 3.35 L and heated to
75°C, the gas vaporized and the resulting pressure inside the container was 17atm. How
many moles of the gas were present?. Single line text.
Answer:
Explanation:What is the demand factor for three commercial ranges?
A sealed 1.0L flask is filled with 0.500 mols of I_2 and 0.500 mols of Br_2. When the container achieves equilibrium the equilibrium constant is 1.10x10^{-2}. What is the equilibrium concentration of the product, IBr?
Answer:
[IBr] = 0.049 M.
Explanation:
Hello there!
In this case, according to the balanced chemical reaction:
[tex]I_2+Br_2\rightarrow 2IBr[/tex]
It is possible to set up the following equilibrium expression:
[tex]K=\frac{[IBr]^2}{[I_2][Br_2]} =0.0110[/tex]
Whereas the the initial concentrations of both iodine and bromine are 0.50 M; and in terms of [tex]x[/tex] (reaction extent) would be:
[tex]0.0110=\frac{(2x)^2}{(0.50-x)^2}[/tex]
Which can be solved for [tex]x[/tex] to obtain two possible results:
[tex]x_1=-0.0277M\\\\x_2=0.0245M[/tex]
Whereas the correct result is 0.0245 M since negative results does not make any sense. Thus, the concentration of the product turns out:
[tex][IBr]=2x=2*0.0249M=0.049M[/tex]
Regards!
Moby eats three-sixths of a pizza. Which fraction is equivalent to three-sixths?
Answer:
1/2
Explanation:
Half of 6 is 3 so therefore it is a half.
Which event is an example of sexual reproduction in plants?
A. Pine trees produce seeds in cones.
B. Mosses form spores in capsules.
C. A kalanchoe produces plantlets on its leaves.
D. A potato has buds that can grow into new stems.
Answer:
the correct answer to your question is b
Set of degenerate orbital in germanium
Answer:
Which set of orbitals are degenerate?
Degenerate is used in quantum mechanics to mean 'of equal energy. ' It usually refers to electron energy levels or sublevels. For example, orbitals in the 2p sublevel are degenerate - in other words the 2px, 2py, and 2pz orbitals are equal in energy, as shown in the diagram.
Explanation:
Answer:
Electron orbitals having the same energy levels are called degenerate orbitals, For example, orbitals in the 2p sublevel are degenerate - in other words the 2px, 2py, and 2pz orbitals are equal in energy.
Is it possible for a reaction with + ΔG° to still be spontaneous in the forward direction? Explain.
Answer:
See explanation.
Explanation:
Hello!
In this case, according to the thermodynamic definition of the Gibbs free energy:
[tex]\Delta G=\Delta H-T\Delta S[/tex]
In the scenario by which G>0 (nonspontaneous) it would be possible for reaction to have a G<0 (spontaneous) if:
- If H>0 and S>0, then the temperature should be increased until the process was entropy-driven for it to be possible.
- If H> and S<0, then it'd be impossible to have an spontaneous process.
- If H<0 and S>0 then the process was not spontaneous.
- If H<0 and S<0 it is possible if the temperature is not high enough to ensure the process is enthalpy-driven.
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What is the result of wave motion on water particles?
A. Water particles barely move forward; they move in a circular pattern.
B. Water particles barely move forward as they move up and down.
C. Water particles are pushed forward as they move up and down.
D. Water particles are pushed down as they move side to side.
Answer:
A. Water particles barely move forward; they move in a circular pattern.
Answer:
For k-12 its:
Explanation:
Water particles barely move forward; they move in a circular pattern.
^^