In a dry cell the electrolyte is a paste.
Minerals with an electric charge called electrolytes could be found in human blood and other bodily fluids. Electrolytes have a variety of effects on how your brains work, including how much water is in your body. The pH balance in the blood (pH) Our muscles work.
The dry-cell battery would be a gadget composed of one or even more electrochemical cells which change electrical energy from chemical energy that has been stored. It has an electrolyte inside of a paste or another moist substance. Zinc anode, as well as carbon cathode, are found inside a central rod of a standard dry cell battery.
Therefore, in a dry cell the electrolyte is a paste.
Hence, the correct answer will be option (B).
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is saturated fat the same as trans fat?
Answer:
Saturated fat occurs naturally in red meat and dairy products. It's also found in baked goods and fried foods. Trans fat occurs naturally in small amounts in red meat and dairy products. Trans fat can also be manufactured by adding hydrogen to vegetable oil.
Pls help with science
What is the difference between the total number of California condors in 1982 and the total population in 2016?
Answer:
The California Condor is on the verge of extinction. There were three individuals, all males, known to be living free in late 1986. That was a drop from fifteen wild birds (including five breeding pairs) known to have been present in 1984. Twenty-one condors were also alive in captivity toward the end of 1986.
Explanation:
Which of these oceans remain frozen accept for part of the year, when the edges melt?
Pacific
Southern
Atlantic
Indian
Artic
Answer:
artic is correct please give brainliest please??
Select some particular plant or animal and find out how it has been improved because of the study of genetics. The following examples are given, but you may select some other topic if you like. Be sure that you have the topic and the method (written or oral) of reporting approved before you do your research. If you choose an oral report, it should be at least 3 minutes in length. If you choose a written report it should be at least 500 words in length.
Do some research into thornless varieties of plants.
What plants are available which do not have thorns?
Is thornlessness a mutation?
When and where was the possibility of growing thornless varieties of plants discovered?
How do these varieties compare with the variety that has thorns?
Consult seed catalogs, gardening books, and magazines in the library.
Do some research into the new variety of pumpkins that do not have hulls on their seeds.
Is the flavor of the new variety as good as the flavor of the older varieties, or is the new variety raised only to have seeds without hulls?
How are the seeds prepared?
Is the pumpkin seed a good source of protein?
Consult seed catalogs, gardening books, and gardening magazines.
Study the potato famine in Ireland.
Study how the use of some modern types of potatoes can help to overcome such famines.
Give some examples of potatoes which are hardy against disease.
Study the careful breeding experiments that resulted in disease resistant potatoes.
What makes them hardier and more disease resistant?
What makes them hardier and more disease resistant?
Do some research to find out about the new breeds of cattle that provide much better beef than the older breeds.
Consult a genetics book from the library to determine the names of such cattle.
what makes these breeds better? Are they cared for the same way? Do they have any drawbacks in terms of cost of breeding and raising?
You may want to investigate some of the diseases which are inherited.
Consult a genetics textbook from the library.
You may also need to look up some of these in a medical textbook or the Journal of Heredity.
Who is more likely to inherit them? Why?
What are the steps to balance a chemical equation?
Answer:
Step 1: The Unbalanced Chemical Equation. The unbalanced chemical equation is given to you. ...
Step 2: Make a List. ...
Step 3: Identifying the Atoms in Each Element. ...
Step 4: Multiplying the Number of Atoms. ...
Step 5: Placing Coefficients in Front of Molecules. ...
Step 6: Check Equation. ...
Step 7: Balanced Chemical Equation.
Explanation:
Huuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
Hiiii- Are you asking what the element of Hu is???
If so- it's Hundium.
...
If this was just a random keyboard spam of a question, then Huuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu to you too
Set the Room temp. to -10.0 °C and observe. What is happening?
plzzz i need help on the ASAP no files/links
Answer:
its getting colder
Explanation:
Illustrating Mechanical Waves
TASK: Create a collage to describe and illustrate how a medium may move and transfer energy in a transverse and compressional/longitudinal wave.
Mechanical waves are waves that transfer energy through a medium (matter). The medium can be a solid, liquid or a gas. A medium in a mechanical wave can move transversely , in a surface wave or Longitudinally. Illustrate the medium movement in a transverse wave and in a compression wave. Below is a checklist/guide for how you will be evaluated for this task.
Illustrate a transverse wave that progressively changes with at least 3 distinguishable
properties: Maximum Points: 60
Labels the crest and the trough.
Labels a point at which the energy of the wave is high.
Labels a point at which the energy of the wave is low.
Label the amplitude, wavelength and identify the frequency of the wave
Draw an arrow to indicate the direction that the medium moves.
Draw an arrow to indicate the direction that the wave moves.
Provides description of your wave in terms of wavelength (long, short), frequency (high, low and the amount in Hertz-Hz) amplitude (high, low)
Identify a measured wavelength and amplitude.
Lastly, have a title and the definition of a transverse wave.
YOU MUST HAVE THE FOLLOWING: 5 points each
Uses color.
Uses a color coded system.
Provides a legend/key for the illustration.
Illustration of a Longitudinal/Compressional Wave that changes in energy
Maximum Points 40
Labels the compressions.
Labels the rarefactions.
Identify the point at which the energy of the wave is high.
Identify the point at which the energy of the wave is low.
Draws an arrow to indicate the direction that the medium moves.
Draws an arrow to indicate the direction that the wave moves.
Lastly, have a title and the definition of a compressional/longitudinal wave.
YOU MUST HAVE THE FOLLOWING: 5 points each
Uses color.
Uses a color coded system.
Provides a legend/key for the illustration.
Transverse wave:
⇨- the way the wave is moving
⟶- Medium - the material it is traveling through
冖- Wavelength - the distance from crest to crest
C - Crest - the highest point on a wave
T - trough - the lowest part on a wave
↕️ - Amplitude - the distance from rest to crest
ྊ - (tinfoil)Wave
Description:
In the beginning of the wave the wavelength is short and the frequency is high so is the energy.and the amplitude is low *i believe* And after the mark of T shown on the image the wavelength is long and the frequency is low and so is the energy and the amplitude is high *i believe*.Amplitude and wavelength are both measures of distance.
Longitudinal/Compressional Wave:
KEYS:
⟶-medium - the material it is traveling through
⇨-way the wave is moving
冖-wavelength - the distance from crest to crest
R -Rarefaction - the opposite of compression
C-Compression - particles are closest together
Mr. Whiteman has two stock solutions of sulfuric acid (H2SO4) in the supply closet: 12.1 M and 6.0 M. If he wants to make 10.0 mL of a 1.0 M solution, which stock solution makes more sense to use? Justify with two calculations.
Answer:
12.1-M requires less volume of stock solution.
Explanation:
Hello there!
In this case, according to the foundations of dilution processes, it turns out convenient to remember that the moles of the solute before and after the dilution remains the same; for that reason we use the following equation:
[tex]M_1V_1=M_2V_2[/tex]
Relating the initial and final molarities and volumes. Now, it is seen that V2 is 10.0 mL and M2 is 1.0 M, which means that if we solve for V1 for 12.1 M and 6.0 M, we obtain the following volumes:
[tex]V_1=\frac{M_2V_2}{M_1} \\\\V_1^{12.1M}=\frac{1.0M*10.0 mL}{12.1M}=0.826mL\\\\V_1^{6.0M}=\frac{1.0M*10.0 mL}{6.0M}=1.67mL[/tex]
Therefore, since the 12.1-M solution requires less volume of stock solution, it makes sense to use this one as the initial solution.
Best regards!
please let me know if the answer is true or false. if false, please tell me what's false about it. the word that they are wondering if it needs to be changed is highlighted
Answer:
false the answer is woody
Explanation:
those are the two types of stems
What is the % dissociation of a solution of acetic acid if at equilibrium the solution has a pH = 4.74 and a pKa = 4.74?
Answer:
[tex]\% diss = 50\%[/tex]
Explanation:
Hello there!
In this case, when considering weak acids which have an associated percent dissociation, we first need to set up the ionization reaction and the equilibrium expression:
[tex]HA\rightleftharpoons H^++A^-\\\\Ka=\frac{[H^+][A^-]}{[HA]}[/tex]
Now, by introducing x as the reaction extent which also represents the concentration of both H+ and A-, we have:
[tex]Ka=\frac{x^2}{[HA]_0-x} =10^{-4.74}=1.82x10^{-5}[/tex]
Thus, it is possible to find x given the pH as shown below:
[tex]x=10^{-pH}=10^{-4.74}=1.82x10^{-5}M[/tex]
So that we can calculate the initial concentration of the acid:
[tex]\frac{(1.82x10^{-5})^2}{[HA]_0-1.82x10^{-5}} =1.82x10^{-5}\\\\\frac{1.82x10^{-5}}{[HA]_0-1.82x10^{-5}} =1\\\\[/tex]
[tex][HA]_0=3.64x10^{-5}M[/tex]
Therefore, the percent dissociation turns out to be:
[tex]\% diss=\frac{x}{[HA]_0}*100\% \\\\\% diss=\frac{1.82x10^{-5}M}{3.64x10^{-5}M}*100\% \\\\\% diss = 50\%[/tex]
Best regards!
2. How many moles of hydrogen are produced from the reaction of 3.86 moles of zinc with an excess of
hydrochloric acid?
Answer:
as per given balanced equation one mole Zn produces 1mole Hydrogen
when reacted with excess acid.
So 3 moles Zn will give 3moles Hydrogen
Explanation:
According to the balanced chemical equation, one mole of Zn produces one mole of hydrogen . Therefore, 3.86 moles of Zn metal will produce 3.86 moles of hydrogen gas.
What is mole ratio ?Mole ratio refers to the ratio of the number of moles of one substance in a chemical reaction to the number of moles of another substance in the same reaction.
It is derived from the balanced chemical equation for the reaction, which indicates the relative amounts of each substance involved in the reaction.
Mole ratio is important in stoichiometry, which is the study of the quantitative relationships between reactants and products in a chemical reaction.
The given chemical reaction is written as follows:
Zn + 2 HCl ⇒ ZnCl₂ + H₂
According to the balanced chemical equation, one mole of Zn produces one mole of hydrogen . Therefore, 3.86 moles of Zn metal will produce 3.86 moles of hydrogen gas.
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The catalytic conversion of ammonia to nitric oxide is the first step in a three-step process, which ultimately results in nitric acid. Balance the equation for the reaction. NH3(g) + O2(g) → NO(g) + H2O(g)
a. 2, 1, 2, 1
b. 3, 2, 3, 3
c. 4, 3, 2, 6
d. 4, 5, 4, 6
The balance equation for the reaction is
4NH₃(g) + 5O₂(g) —> 4NO(g) + 6H₂O(g)The coefficients are 4, 5, 4, 6
Option D. 4, 5, 4, 6 gives the correct answer to the question.
From the question given above, we obtained:
NH₃ + O₂ —> NO + H₂O
The above equation can be balance as illustrated below:
NH₃ + O₂ —> NO + H₂O
There are 2 atoms of H on the right side and 3 atoms on the left side. It can be balance by writing 4 before NH₃ and 6 before H₂O as shown below:
4NH₃ + O₂ —> NO + 6H₂O
There are 4 atoms of N on the left side and 1 atom on the right side. It can be balance by writing 4 before NO as shown below:
4NH₃ + O₂ —> 4NO + 6H₂O
There are 2 atoms of O on the left side and a total of 10 atoms on the right side. It can be balance by writing 5 before O₂ as shown below:
4NH₃(g) + 5O₂(g) —> 4NO(g) + 6H₂O(g)
Now, the equation is balanced.
The coefficients are 4, 5, 4, 6
Thus, Option D. 4, 5, 4, 6 gives the correct answer to the question.
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PLEASE HELP ME OUT. I AM REALLY LOST AND I JUST NEED THIS LAST QUESTION I WILL BE GRATEFUL AND WILL GIVE BRANLIEST!
PLEASE HELP ME OUT. I AM REALLY LOST AND I JUST NEED THIS LAST QUESTION I WILL BE GRATEFUL AND WILL GIVE BRANLIEST!
Explanation:
—COOH and —NH₂
Carboxylic Acid and Amino group
-TheUnknownScientist
Just awnser #9#10#11#12 please ❤️ i will mark brainliest and also you get 15 points!
Answer: 9. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
10. The reasons for the differences in the surface temperature of terrestrial planets are due to their distance from the sun and the composition of their atmosphere.
11. 93.48 million miles
12. Iron core
Explanation: Hope this helped!! :)
I NEED HELP, PLEASE AND THANK YOU! <3
The doctor speaks to his patients in a soothing voice, maintains eye contact, and is aware of his body language. Which best describes what these actions will do for the patients?
allow for successful communication between diverse cultures
allow for greater chance of stereotyping patients
allow for an increase in misdiagnosis
allow for greater chances for a sentinel event
Answer:allow for greater chances for a sentinel event
Explanation:
Answer:
The last one
Explanation:
To much eye contact may cause discomfort to the patient. I mean like looking at the client is good but with out a blink breaking is weird.
Convert 500.0 mL at 740.0 mm of Hg to its new volume at 780.0 mmHg. 474.4mL
A 25°C sample of gas has a volume of 5.0 L. What will it’s volume be if it is heated to 50.0°C?
Is biden falling down the stairs funny or is it just me
Answer:
yes it is hilarious
Explanation:
good to find another republican lol
Combustion engines became common in the mid-1800s when people began to use them to power ships, trains, and
machinery in factories. Combustion engines add carbon dioxide to the air, and as a result, carbon dioxide in the
atmosphere increased quickly. How did this change the total amount of energy in the Earth system, and how did this
change happen? How did this affect global average temperature?
I need help please and don’t send the fake link): < just to get points
Answer:
The correct answer is - increased the global average temperature.
Explanation:
Combustion is the process that increases the carbon dioxide in the atmosphere, which results in entering more energy into the Earth system than existed from it. Therefore, the amount of energy increased in the system of the earth or surface of the earth.
The reason behind it is that carbon dioxide trapped and redirects energy back toward the Earth's surface, which is absorbed by Earth's surface and surface increased, and global average temperature increased.
Combustion process increases the global average temperature of the earth by absorbing and emitting the energy revert back to earth.
What is combustion?Combustion is a process exothermic process in which organic molecules burns in the presence of oxygen to produce energy in the form of heat and light and CO₂ gas.
CO₂ gas is a green house gas which traps the energy of the atmosphere and revert back it into the earth surface, due to which temperature of the earth surface and atmosphere increases which results in the elevation of global average temperature.
Hence, combustion increases the global average temperature.
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In an exothermic the change in enthalpy is usually
Positive, because the potential energy of the reactants is higher than the potential energy of the products
Neutral, because the potential energy of the products and reactants cancel each other out.
Negative, because the potential energy of the reactants is higher than the potential energy of the products
Positive, because the potential energy of the reactants is lower than the potential energy of the products
Answer:
Negative, because the potential energy of the reactants is higher than the potential energy of the products
Explanation:
Exothermic reaction is a reaction in which heat is released to surrounding. This is due to the fact that the heat content of the reactant is higher than the heat content of product thus producing a negative enthalpy change (ΔH) i.e
Enthalpy change = Heat of product – Heat of reactant
ΔH = Hp – Hr = negative
Considering the options given in the question above, the correct answer is:
Negative, because the potential energy of the reactants is higher than the potential energy of the products
Nitrous acid is classified as an Arrhenius acid because HNO2 contains
1. OH-ions
2. 02-ions
3. NO2-ions
4. H+ ions
4) H+ions is your answer , good morning , have a great day ahead.
. If 30.0 grams of copper (II) chloride reacts with 40.0 grams of sodium nitrate, what is the limiting reactant?
Answer:
The limiting reactant is copper (II) chloride
Explanation:
here you go
if a solution has a pOH of 5.2 the pH of the solution is
Answer:
ph=5.2 solution is acidic
Which step do you use first to calculate the number of grams of FeCl2 produced when starting with 30.3 g of Fe in this reaction?
Answer:
I dont care I want pionts
the atomic number is the number of protons, but in a neutral atom it is also the number of _____. A. none of these B. electrons C. neutrons D. nuclei
Answer:
Electrons
hope it helps
Commercially available concentrated hydrochloric acid is 37.0% w/w HCl. Its density is 1.18g/ml. Calculate the molarity of concentrated HCl?
Answer:
M = 12.0M
Explanation:
Hello there!
In this case, according to the given by-mass percent of HCl, which can be set up in terms of mass of HCl over mass of solution, we can calculate the molarity, by multiplying by the density to get the mL's of solution and further convert to liters. Moreover, the molar mass of HCl (36.46 g/mol) must be also used to calculate the moles, since molar units requires moles of solute and liters of solution as shown below:
[tex]M=\frac{37.0gHCl}{100g\ sln}*\frac{1.18g\ sln}{1mL\ sln}*\frac{1000mL\ sln}{1L \ sln}*\frac{1molHCl}{36.46gHCl}\\\\M= 12.0M[/tex]
Best regards!
Chemistry help! Please zoom in to see better
Answer:
82.04g
Explanation:
To solve this problem, you need to find the molar mass of HCl, which is the sum of the molar mass of H plus the molar mass of Cl. The molar mass of H is 1.008g/mol while the molar mass of Cl is 35.45g/mol. Thusly the molar mass of HCl is 36.458g/mol. You have 2.25 moles of HCl, so multiply the number of moles by the molar mass to get the mass in g. In this case it is 2.25mol * 36.458g/mol = 82.04g.
If I helped, a brainliest would be greatly appreciated!
Which subatomic particle orbits the nucleus?
O the electron
o the neutron
O the proton
it’s electron btw
Answer: Subatomic particle which orbits the nucleus is electron.
Explanation:
Every atom contains three sub-atomic particles. These are protons, neutrons and electrons.
Protons contain a positive charge, neutrons have no charge and electrons have a negative charge.
Both protons and neutrons reside inside the nucleus of the atom whereas electrons reside outside the nucleus of atom and revolve around the nucleus.
Therefore, it is concluded that subatomic particle which orbits the nucleus is electron.