Answer:
An acid that contains more than one ionizable proton is a polyprotic acid. The protons of these acids ionize in steps. The differences in the acid ionization constants for the successive ionizations of the protons in a polyprotic acid usually vary by roughly five orders of magnitude.Answer:
What happens to the ionizing rate if the steps of ionizing polyprotic acid increases? Well they have this stepwise ionization process occurs for all polyprotic acids
Explanation:
How many eggs are in 3 dozen eggs? Use the dimensional analysis for this for practice.
Answer:
36 eggs
Explanation:
12 eggs in each carton
12 + 12 + 12 = 36 eggs
or 3 * 12 = 36 eggs
Hope this helps, have a nice day/night! :D
Darwin observed __________________ types of mockingbirds and finches lived in different island environments.
Answer:
Darwin observed many different types of mockingbirds and finches lived in different island environments.
what is the potential energy of an object is its internal energy due to random motons of its individual molecules
Answer:
Thermal energy consists of the total internal kinetic energy of an object due to the random motion of its atoms and molecules. It is related to heat and temperature.
Explanation:
please anyone please this is due today!! help for a BRAINLIEST
For today's assignment, you need to balance and classify each of the following equations as synthesis, decomposition, single replacement, double replacement, or combustion.
Answer:
Explanation:
Im sorry all i know is that #3 is for sure combustion
I need help with this question
2. Which is true regarding water? A. Compound of element B. Element of gases C. Mixture of gases D. Substances of gases
D or A im not fully sure about my answer on that
What would be the bond angle if the molecular geometry were bent and had only one lone pair of electrons
120°
Bent molecular geometry
Examples H2O, SO2
Point group C2v
Coordination number 2
Bond angle(s) 90°<θ<120°
A sample of H2 gas (12.28 g) occupies 100.0 L at 400.0 K and 2.00 atm. A sample weighing 9.49 g occupies ________ L at 353 K and 2.00 atm.
Considering the ideal gas law, a sample weighing 9.49 g occupies 68.67 L at 353 K and 2.00 atm.
Ideal gases are a simplification of real gases that is done to study them more easily. It is considered to be formed by point particles, do not interact with each other and move randomly. It is also considered that the molecules of an ideal gas, in themselves, do not occupy any volume.
An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases:
P× V = n× R× T
In this case, you know:
P= 2 atmV= ?n= [tex]9.49 gramsx\frac{1 mole}{2 grams} = 4.745moles[/tex] being 2g/mole the molar mass of H2, that is, the amount of mass that a substance contains in one mole.R= 0.082 [tex]\frac{atmL}{molK}[/tex]T= 353 KReplacing:
2 atm× V = 4.745 moles× 0.082[tex]\frac{atmL}{molK}[/tex]× 353 K
Solving:
V = (4.745 moles× 0.082[tex]\frac{atmL}{molK}[/tex]× 353 K)÷ 2 atm
V= 68.67 L
Finally, a sample weighing 9.49 g occupies 68.67 L at 353 K and 2.00 atm.
Learn more:
https://brainly.com/question/4147359?referrer=searchResultsnguyên tử khối của Al
Answer:
26,981539 u là khối lượng nguyên tử của AI
Explanation:
I do not quite understand this, anyway someone can help? I'll give brainliest to the correct answer!
To solve for number one we must follow these steps:
m = 703.55 g − 345.8 g
m = 357.75 g
Then we solve for the density-
d = 357.75 g / 225 mL
d = 1.59 g/mL
Answer for number 5) 1.59 g/mL
Density= Mass/Volume
therefor- Mass = 65.14g and Volume = 35.4mL
Density = 65.14g/35.4 mL = 1.84 g/mL
Answer for number 6) 1.84 g/mL
Question 7-
g = (0.8765 g/mL)(250.0 mL) = 219.1 g
Answer: 219.1 g
Question 8-
Density = mass/volume
Mass = 1587g
4.5cm x 5.2cm x 6cm = 140.4 cubic-cm
Volume = 140.4 cubic-cm
Mass/volume = 1587/140.4 = 11.3 g/cm^3
Answer: 11.3 g/cm^3
Question 9:
First calculate the volume of iron
49.10mL − 45.50mL = 3.60mL
Density = mass/volume;
density = 28.5g/3.60 mL= 7.92 g/mL
Answer: 7.92 g/mL
Question 10:
Volume = 2500.0g / 10.5g/cm3 = 238.095cm^3
Now we round up the answer to 238cm^3
Answer: 238cm^3
I hope this helped!
what is the unique characterization of a ph buffer?
Can anyone help meee
calculate the solubility product for the following solutions:
a) a saturated solution of cadmium sulfide, CdS (solubility = 1.46 • 10 ^ -11 mol / l
b) a saturated solution of calcium fluoride, CaF2, containing 0.0168g / l CaF2
Answer:
what is total amount of saturated solution
NO ONE IS ANSWERING PLS HELP!
Which product in the reaction forms a precipitate?
AgCl
AgK
No precipitate formed
Answer:
AgCl
Explanation:
Got correct on E2020
Answer:
B: AgCl
Source: trust me bro
Help Please
I Have to finish this assignment asap
Answer:a. limiting reactant
b. actual yield
c. mole ratio
d.excess reactant
e.theoretical yield
f.stoichiometry
g.percent yield
h.limiting reactant
i.theoretical yield
Explanation: ..
PLEASE HELP!!
In the formula
1N2 +3H2 → 2NH3 + 1H2
1 diatomic nitrogen (1N2) and 3 diatomic hydrogen (3H2) produce 2 ammonia (2NH3) with 1 diatomic hydrogen (1H2) left over. How can you change the formula so no diatomic hydrogen (H2) is left over?
(1 point)
Remove a H2 molecule from the left side of the equation.
Remove a NH3 molecule from the right side of the equation.
There is nothing that can be done to use the leftover molecules.
Add another N2 molecule to the left side of the equation.
Answer:
Remove a H2 molecule from the left side of the equation.
Explanation:
i took the quiz and got it right
What effect does salt have on a marshmallow?
Answer:
The original marshmallow was named for the inclusion of marshmallow root in the recipe. The roots and leaves of the marshmallow plant contain mucilage, a slimy-textured demulcent best known for its use as a homeopathic cough suppressant. Marshmallow root is considered to be soothing and mildly antimicrobial. It has long been used as an herbal treatment for minor digestive issues and skin irritations, although its use in the creation of its namesake confection has long since fallen by the wayside.
Explanation:
So basically salt makes it strecthy! Please mark brainliest!!
8. In an ionic bond, electrons are
electrons are
while in a covalent bond,
?
Answer:
in covalent bond electrons are shared by atoms
The equation shows a neutralization reaction. H2SO4 2NaOH Na2SO4 2H2O What is Na2SO4? an acid a base a salt an ion.
Does ZnS,MnS,NiS and CoS (Group IV Sulphides) dissolve in dil.HCl? And I want to know the reasons
Answer:
..
Explanation:
In a significantly acidic medium, even a soluble sulfide like sodium sulfide will not facilitate precipitation of Fe, Zn, Mn, Co and Ni as their sulfides.
How long does it take far Uranus to complete one revolution (orbit) around the sun?
How does One determine number of electron domains in molecul or ion
Answer:
The number of electron domains in a molecule or ion is the number of bonds (double and triple bonds count as one domain) plus the number of nonbonding (lone) electron pairs.
Explanation:
Propose an explanation for why the element carbon, rather than sodium, is important in forming natural polymers?
I need this ASAP
Blood has a mass-volume percent of NaCl of 0.9%. What mass (g) of NaCl is present in a liter of blood
The mass (g) of NaCl that is present in a liter of blood is 0.347g.
HOW TO CALCULATE MASS:
The mass of a substance can be calculated by multiplying the decimal mass-volume of the substance by its molar mass. According to this question, Blood has a mass-volume percent of NaCl of 0.9%. This means that 0.9/100 = 0.009g of NaCl is present in each 100g of blood. Molar mass of NaCl = 23 + 35.5 = 38.5g/molMass of NaCl in a liter of blood = 38.5 × 0.009Mass of NaCl in a liter of blood = 0.347g of NaCl. Therefore, The mass (g) of NaCl that is present in a liter of blood is 0.347g.Learn more at: https://brainly.com/question/15743584?referrer=searchResults
the apparatus in the figure below is used for the electrolysis of water. hydrogen and oxygen gas are collected in the two inverted burets. an inert electrode at the bottom of the left buret is connected to the negative terminal of a 6 v battery, whereas the electrode in the buret on the right is connected to the positive terminal. a small quantity of sodium carbonate is added to speed up the electrolytic reaction.
At the left side; the balanced half equation is:
[tex]\mathbf{2H_2O _{(l)} + 2e^- \to H_{2(g)} + 2OH^{-}_{(aq)}}[/tex]
At the right side, the balanced half equation is:
[tex]\mathbf{4OH^-_{(aq)} \to O_{2(g)} + 2H_2O_{(l)} + 4e^-}[/tex]
The objective of this question is to determine the balanced half-reaction for the electrodes on the left and the right side.
A half-reaction is an oxidation-reduction reaction part of a redox reaction where we make sure both half-reactions are balanced by multiplication of the reactions with appropriate numbers in order to have an equal number of electrons.
According to the given information:
The overall cell reaction can be expressed as:
[tex]\mathbf{H_2O_{(l)} \to H_{2(g)} + \dfrac{1}{2}O_{2(g)}}[/tex]
At the left side; the balanced half equation can be expressed as:
[tex]\mathbf{2H_2O _{(l)} + 2e^- \to H_{2(g)} + 2OH^{-}_{(aq)}}[/tex]
At the right side, the balanced half equation can be expressed as:
[tex]\mathbf{4OH^-_{(aq)} \to O_{2(g)} + 2H_2O_{(l)} + 4e^-}[/tex]
Learn more about the electrolysis of water here:
https://brainly.com/question/22352373?referrer=searchResults
what is distillation used to seperate
Distillation is used to separate liquids from nonvolatile solids as in separation of alcoholic Liquors from fermented materials or in the separation of two or more liquids having different boiling points as in the separation of gasoline Carrison and lubricating oil from crude oil
Answer: It is used to separate a solvent from a solute.
Explanation:
How does calculating the kinetic energy of an object at different velocities help understand the relationship between kinetic energy and velocity?
Answer:
Kinetic energy depends on the velocity of the object squared
Explanation:
Kinetic energy depends on the velocity of the object squared. This means that when the velocity of an object doubles, its kinetic energy quadruples. ... Kinetic energy must always be either zero or a positive value. While velocity can have a positive or negative value, velocity squared is always positive.
what will you observe when you open a bottle of concentrated hydrochloric acid?
Answer:
Strong affinity of HCl gas for moisture in air results in forming of droplets of liquid solution which appears like a cloudy smoke.
Explanation:
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Hope this helps :)
An atom has a charge of 1+. If the atom's nucleus contains 23 protons, the atom must have
A
25 electrons.
В.
23 electrons.
с.
22 electrons.
D.
24 electrons.
Howler and warnibers is answer
Answer:
22 electrons
Explanation:
correct answer correct answer correct answer
how spectral lines are formed
=Spectral lines are produced by transitions of electrons within atoms or ions. As the electrons move closer to or farther from the nucleus of an atom (or of an ion), energy in the form of light (or other radiation) is emitted or absorbed.…
Answer:
Spectral lines are produced by transitions of electrons within atoms or ions
An Oxygen atom Isotope has an overall charge of -1. How many electrons does it have?
Answer:
8 electrons.
Explanation: