Answer:
Explanation: possible oxidation numbers of Au are +I and +III
Au2O3 ⇒ 2 Au + 3 O2
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
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
The table shows the speed of sound in four substances.
Answer:
15 degree's
Explanation:
it is when sound travels at its lowest
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
Just ignore them you dont need to send salty ppl proof of anything
plz help this was due yesterday butttttt i didn’t want to do it...
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
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:
how many electrons does Helium need to have a full outer shell
Answer:
i dont no about this one
Explanation:
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.
Answer:
Mass of the stone=112.5g
Volume of stone=95cm3-50cm3=45cm3
Explanation:
Los alcoholes de cadenas largas presentan ________ puntos de ebullición. Asimismo, éstos al tener ________, el punto de ebullición disminuye
Answer:
Los alcoholes de cadena larga tienen altos puntos de ebullición. Además, cuando tienen ramificación, el punto de ebullición disminuye
Explanation:
El punto de ebullición de un alcohol se ve afectado, las interacciones dipolo-dipolo, las fuerzas de dispersión de van der Waals y los enlaces de hidrógeno.
Las fuerzas de las interacciones dipolo-dipolo y los enlaces de hidrógeno son más o menos las mismas en la serie de alcohol en serie, sin embargo, a medida que aumenta la longitud del alcohol, las fuerzas de dispersión de van der Waals aumentan debido al aumento de la atracción dipolo-dipolo.
Sin embargo, a medida que el alcohol se vuelve más ramificado, el área de la superficie aumenta, lo que disminuye las fuerzas de van der Waals, de modo que se requiere menos fuerza para separar las moléculas y hervir una muestra del alcohol.
Por tanto, los alcoholes de cadena larga tienen puntos de ebullición elevados. Además, cuando tienen ramificación, el punto de ebullición disminuye.
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.
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.
Which organelle allows plants to make their own food?
A: Chloroplast
B: Vacuole
C: Cell wall
D:
Cell membrane
Help me ASAP
Answer:
chloroplast is the correct answer
molar mass of Fe(NO3)3
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.
Answer:
D
Explanation:
electrons have a negative charge. gaining electrons increases the negative charge.
2
3 4 5 6 7 8
9
The earth is the
planet from the Sun, which is just the right distance for life to utilize the Sun's power and energy
O first
O second
O third
O fourth
Answer:
third
Explanation:
because it's the right distance for life to utilise the sun's power energy
How many moles are there in 122 grams of NO2?
Answer:
1.47 × 10^(23) molecules
Explanation:
Will mark brainly
ASAP
answer this question pleas
Answer:nope
Explanation:
Just no
How many kernel electrons in Ne?
Answer:
I am pretty sure it has 10 kernel electrons!?!?!?
Hope this helps!!!
Have a great day!!! :)
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.
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
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
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
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?
Answer:
The object will become statically charged
Explanation:
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?
24ethanjones88 unfvbfuhgtbnuthigthtijbtnibttbhiitti
Answer:
mmm Nice B)
Explanation:
Please help me with number 4 and 5 please
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
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.
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.
Answer:
D
Explanation:
Compare the life cycles of a flowering and a conifer non-flowering plant.
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.
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.
Answer:
The food darkens.
Explanation:
Which type of reaction is NaCI + AgNO3 -----> NaNO3 + AgCI
A Synthesis
B Decomposition
C Oxidation
D Replacement
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.
Which of the following BEST explains why fossil fuel supplies are limited?'
Fossil fuel formed over million of years, and they are being used more quickly than
they can be replaced
Only small amounts of fossil fuel ever formed and early humans used most of the
available supply
Fossil fuels exists in every large quantities, but they are difficult for scientists to
locate
People are not allowed to use large amounts of fossil fuels.
I need help on 6 PLEASE!!
Answer:
A) 1 and 2
Explanation: