Answers
Related Questions
I need help with finding the Concentration of HCL (Ma)
the other things I have right now are
Vb = 10ml
Va = 10ml
Mb = 0.25m
Answers
Answer:
0.35 M
Explanation:
HCl + NaOH --> NaCl + H2O
Since the ratio HCl : NaOH is 1:1, you can apply the formula:
Ma x Va = Mb x Vb
Vb = 14 ml (based on the table)
Va = 10 ml
Mb = 0.25 M
Ma = (Mb x Vb)/Ma = (14 x 0.25)/ 10 = 0.35 M
How is energy converted in a hydroelectric plant?
The potential energy of water is converted to electrical energy when water flows past a generator.
The kinetic energy of water turns turbines; the mechanical energy of the turbines turns the generator, which produces electrical energy.
The kinetic energy of water is converted to electrical energy when water flows down the dam's channel and into the transformer.
The potential energy of water turns the generator's turbines, which results in the production of electrical energy.
Answers
Answer:
Energy is converted in a hydroelectric plant as follows;
The kinetic energy of water turns turbines; the mechanical energy of the turbines turns the generator, which produces electrical energy
Explanation:
The water in an hydroelectric plant is given potential energy by building an artificial dam to raise the height of the water above the turbine
The high potential energy of the water is converted to kinetic energy which provides the power that turns the turbine transforming the kinetic energy of the water into rotational kinetic energy of the turbine by conservation of mechanical energy;
The shaft connected between the turbine and the generator, turns the generator by the mechanical energy of the turbine and as the generator turns in a magnetic field, electricity is produced by magnetic induction according to Faraday's law.
The table shows the speed of sound in four substances.
Answers
Answer:
15 degree's
Explanation:
it is when sound travels at its lowest
The maps above show a front as it moves east across the United States. Which of these describes the weather change that can be expected for Amarillo, Texas?
A. The cold front will bring cooler temperatures and snow because the cold front is producing large amounts of energy and snow moving southeast.
B. The warm front will bring warmer temperatures with hot air for several days because it pushes the cold air out of the way.
C. The warm front will bring warmer temperatures with light rain for a few days because the warm air rises and cools producing rain.
D. The cold front will bring cooler temperatures with thunderstorms and rain, which causes the moisture in the warm air to condense and release large amounts of energy.
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Answer:
D
Explanation:
24ethanjones88 unfvbfuhgtbnuthigthtijbtnibttbhiitti
Answers
Answer:
mmm Nice B)
Explanation:
Which statement about covalent bonds and electrons is true?
O A. All covalent bonds are the same.
B. The atom with more electronegativity takes less than its share of
the electrons.
C. Electrons in covalent bonds are always shared equally,
D. If an atom gains an electron, it becomes more negative.
Answers
Answer:
D
Explanation:
electrons have a negative charge. gaining electrons increases the negative charge.
How many moles are there in 122 grams of NO2?
Answers
Answer:
1.47 × 10^(23) molecules
Explanation:
plz help this was due yesterday butttttt i didn’t want to do it...
Answers
Answer:
It is the same it has cycles related to it (that's what I could think of)
First law of Thermodynamics
The first law of Thermodynamics usually applies to situations where?
A : Thermal Energy is converted to Mechanical Energy
B : Chemical Energy is converted to electrical energy
C : Light energy is converted to sound Energy
D : Nuclear energy is converted to sound energy
Answers
Answer:
Thermal energy is taken from heat sink in higher temperature. A thermal power machine does mechanical energy using part of the heat.
Part of heat taken are given in cold reservoir in lower temperature
Explanation:
predict how the surface of a sand dune would change if a river began flowing through the area over the course of 10,000 years. Write your explanation in the space
below.
Answers
Answer:
the sand dune would become flattened and eventually turn into sedementary rock
answer this question pleas
Answers
Answer:nope
Explanation:
Just no
How many kernel electrons in Ne?
Answers
Answer:
I am pretty sure it has 10 kernel electrons!?!?!?
Hope this helps!!!
Have a great day!!! :)
I need help on 6 PLEASE!!
Answers
Answer:
A) 1 and 2
Explanation:
Choose ALL that apply for NEAP tides Moon and Sun are at right angles to the Earth gravity of the Sun and Moon work against each other Moon, Sun, and Earth are in alignment smaller than normal range of highs and low tides
Answers
Answer:
i think it is..... smaller than normal range of highs and low tides
Moon and Sun are at right angles to the Earth
Explanation:
Moon and Sun are at right angles to the Earth and gravity of the Sun and Moon work against is the right statement about NEAP tides.
What are tides?Tides are the cyclic deformation of water body occur due to external gravitational force.
NEAP tides are also known as small tides as their heights are not very much and this is occur due to opposite attraction of water towards the gravity of the sun and moon. As sun and moon are present in the right angle direction with respect to the earth.
Hence, option (1) & (2) is correct, i.e. gravity of sun and moon is opposite and they are present at the right angle to the earth.
To know more about tides, visit the below link:
https://brainly.com/question/11545040
Which type of reaction is NaCI + AgNO3 -----> NaNO3 + AgCI
A Synthesis
B Decomposition
C Oxidation
D Replacement
Answers
Answer:
D. Replacement
Explanation:
The positive ions on each compound are being replaced by the other, so therefore it is Replacement. It is also double replacement.
please answer this aaaaaaaaaaa
Answers
Answer:
Frog, shark, snake, Lion, tortoise, salamander, ostrich
Answer:
The person above me is correct it is frog, shark, snake, Lion, tortoise, salamander, ostrich
Explanation:
so guys, on tt i posted a video of me dancing and doing tricks, and someone said its from yt. like no? I gave proof two times and I cant rn bc im in school ?? what should i do dont rpeort pls i need help
Answers
Just ignore them you dont need to send salty ppl proof of anything
Which of the following indicates that a chemical change has happened during cooking?
The food darkens.
Bubbles form in boiling water.
Energy is transferred from the stove to a pan.
Butter melts.
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Answer:
The food darkens.
Explanation:
Please help me with number 4 and 5 please
Answers
A 40.0 gram sample of water releases 503 Joules of energy when cooled from 25.0˚C to 22.0˚C. What is the value of the specific heat of water? Round to the nearest hundredth.
Answers
Answer:
Explanation:
i dont know either but im working on it now, i think that you are supposed to use this equation Q = m * ΔT * Cp once i get the answer ill tell you
Cecilia is combing her hair. She notices that her hair and the comb have developed an electric charge. What will happen when she holds the comb near a small, uncharged object?
Answers
Answer:
The object will become statically charged
Explanation:
Compare the life cycles of a flowering and a conifer non-flowering plant.
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Answer:
The main difference between flowering and nonflowering plants is their method of reproduction. Flowering plants rely on pollination for reproduction, where as nonflowering plants rely on dispersion to continue their life cycle.
Another term for air movement caused by differences in air pressure is 
Help please
Answers
Answer:
wind
The Movement of Air. Movement of air caused by temperature or pressure differences is wind. Where there are differences of pressure between two places, a pressure gradient exists, across which air moves: from the high pressure region to the low pressure region.
Explanation:
Hope it helps! Correct me if I am wrong :>
Can you please mark me as brainlest?
Its ok if not :>
1. If I add together water and an effervescent tablet, will
the total mass before mixing be less than, equal to, or
greater than the mass after mixing?
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Which organelle allows plants to make their own food?
A: Chloroplast
B: Vacuole
C: Cell wall
D:
Cell membrane
Help me ASAP
Answers
Answer:
chloroplast is the correct answer
Clear sele 4. Which of the following statements is (are) true about antibiotic - resistant bacteria. (Click all that apply) A. Antibiotic resistance can sometimes be shared among bacteria. B. Mutation can cause antibiotic resistance, C. Bacteria that become resistant are an example of evolution D. Antibiotics killing bacteria while allowing mutated bacteria to live is an example natural selection. 5. Identitfy ONE difference between kingdoms Archaea and Bacteria.
Answers
Answer:
A. Antibiotic resistance can sometimes be shared among bacteria.
B. Mutation can cause antibiotic resistance.
D. Antibiotics killing bacteria while allowing mutated bacteria to live is an example natural selection.
Explanation:
Identifying: Archaea have cell walls that lack peptidoglycan and have membranes that enclose lipids with hydrocarbons rather than fatty acids (not a bilayer). ... Bacteria: cell membrane contains ester bonds; cell wall made of peptidoglycan; have only one RNA polymerase; react to antibiotics in a different way than archea do.
Hope this helps, I reported some answer that was absurd, not applicable, incomplete and confusing
Mutation can cause antibiotic resistance, Bacteria that become resistant are an example of evolution. Antibiotics killing bacteria while allowing mutated bacteria to live is an example natural selection The correct options are B, D, and C.
What are archaebacteria and bacteria?Archaea, like bacteria, lack interior membranes but have a cell wall and swim with flagella.
Archaea differ from bacteria in that their cell wall lacks peptidoglycan and their cell membrane contains ether linked lipids rather than ester linked lipids.
The dispersion of antibiotic resistance in pathogenic bacteria is a simple and elegant example of natural selection at work.
Bacteria can develop antibiotic resistance through mutations that alter antibiotic cellular targets or by acquiring dedicated resistance genes from other bacteria.
Antibiotic resistance can be caused by mutation; bacteria that become resistant are an example of evolution. Natural selection is demonstrated by antibiotics killing bacteria while allowing mutated bacteria to live.
Thus, B, D, and C are correct options.
For more details regarding archaebacteria, visit:
https://brainly.com/question/2598723
#SPJ2
Calculate the number of grams Fe2O3 produced from 8.93 g 02.
4 Fe +302 → 2 Fe2O3
Answers
Hey there!:
Molar mass :
Fe₂O₃ = 159.69 g/mol
O₂ = 31.99 g/mol
By reaction stochiometry :
4 Fe + 3 O₂ = 2 Fe₂O₃
3 * (31.99 g O₂ ) ------------------ 2 * ( 159.69 ) g Fe₂O₃
8.93 g O₂ --------------------------- ( mass O₂)
mass O₂ = ( 8.93 * 2 * 159.69 ) / ( 3 * 31.99 )
mass O₂ = 2852.0634 / 95.97
mass O₂ = 29.71 g Of Fe₂O₃
Hope this helps!
A stone has a mass of 112.5g. When the stone is totally immersed in a measuring cylinder containing water the displaced water moves from 50cm3 to 95cm^3. Find the density of the stone.
Answers
Answer:
Mass of the stone=112.5g
Volume of stone=95cm3-50cm3=45cm3
Explanation:
HELP QUICKLY PLEASE!!! Thermal energy is transferred from a hot object to a colder object by means of ___
a. heat
b. energy
c. work
d. temperature
e. none of the above
Answers
Answer:
Heat is the transfer of energy
Explanation:
Heat refers to the energy transferred from a hotter object to a cooler one. Heat is transferred in three ways: radiation, conduction, and convection. Radiation is the direct transfer of energy. The direct transfer of heat from one substance to another substance that it is touching is called conduction.
A sample of a gas at 25°C has a volume of 150 mL when its pressure is 0.947 atm. What will the temperature of the gas be at a pressure of
0.987 atm and the volume changes to 144mL?
Be sure to show all of your work, define variables, show equation and substitute variables. Report you answer in Celcius.
Answers
Answer: The temperature of the gas at a pressure of 0.987 atm and volume of 144mL is [tex]25.16^0C[/tex]
Explanation:
The combined gas equation is,
[tex]\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}[/tex]
where,
[tex]P_1[/tex] = initial pressure of gas = 0.947 atm
[tex]P_2[/tex] = final pressure of gas = 0.987 atm
[tex]V_1[/tex] = initial volume of gas = 150 ml
[tex]V_2[/tex] = final volume of gas = 144 ml
[tex]T_1[/tex] = initial temperature of gas = [tex]25^0C=(25+273.15)K=298.15K[/tex]
[tex]T_2[/tex] = final temperature of gas = ?
Now put all the given values in the above equation, we get:
[tex]\frac{0.947\times 150}{298.15}=\frac{0.987\times 144}{T_2}[/tex]
[tex]T_2=298.31K=(298.31-273.15)^0C=25.16^0C[/tex]
The temperature of the gas at a pressure of 0.987 atm and volume of 144mL is [tex]25.16^0C[/tex]