Answer:
koh+hcl=kcl+h2o is the answer
Can the ratio of hydrogen to oxygen change if a solute is dissolved in the water
Answer:
Water molecules feature the combinations of hydrogen and oxygen atoms in a 2:1 ratio. Since they are present in a fixed ratio of mass, water molecules obey the law of constant proportions. Water is formed when two molecules of the diatomic hydrogen gas, combine with one molecule of the diatomic oxygen gas to produce two molecules of water
how many moles are in 52 grams of o2
Answer:
1.625 moles
Explanation:
mole=mass/molar mass
mole= 52/25
A certain reaction is exothermic in the forward direction and has a greater number of molecules on the product side. Which actions should be used to increase the yield of the products?
Increase the temperature and increase the pressure.
Increase the temperature and decrease the pressure.
Decrease the temperature and decrease the pressure.
Decrease the temperature and increase the pressure.
Answer:
increase in the temperature and decrease in pressure will do because it need to liberate heat
If the temperature of a gas changes but the number of moles and volumes remain which is the values must also change ?
Answer:
As the pressure rises, the volume also rises. As the volume lower, the pressure lowers.
Cells need energy to function, but also need to be able to heal and grow for a person to be healthy. Which of the following describes how cells grow
A. Glucose molecules are put back together to form starch molecules for growth
B. oxygen molecules recombine to allow cells to get larger
C Amino Acid molecules are put back together in cells to make protein molecules for growth.
C Amino Acid molecules are put back together in cells to make protein molecules for growth.
- Because to repair or make new cell the nutrients require is protien and 50 % of your dry body is nothing but protien.
How do chemical bonds form between the atoms in a molecular compound
There are two types of chemical compound one is covalent compound and other is ionic compound. Therefore, ionic bond is formed by complete transfer of electron and covalent bond is formed by partial sharing of electron.
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
An ionic compound is a metal and nonmetal combined compound. Ionic bonds are formed by complete transfer of electron from one element to another element. Covalent compound are formed by elements whose electronegativity difference is very low. Covalent bond is formed by sharing of electron.
Therefore, ionic bond is formed by complete transfer of electron and covalent bond is formed by partial sharing of electron.
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According to the kinetic theory, what is the kinetic energy of a gas molecule proportional to? O A volume of the gas B. pressure of the gas OC. temperature of the gas D. density of the gas
Answer:
Gases consist of particles (molecules or atoms) that are in constant random motion. ... The average kinetic energy of gas particles is proportional to the absolute temperature of the gas, and all gases at the same temperature have the same average kinetic energy.
Describe how the calcium atom and the oxygen atom forms calcium oxide
You should give the charge on each ion formed
Answer:
Calcium atom has two valency electrons in its outermost energy level and these participate in bonding with the two of the six valency electrons in the outermost energy level of oxygen atom.
Calcium loses these two electrons and it gains a charge of +2 while Oxygen atom gains these two electrons and gains a charge of -2 hence gains stability
[tex]Ca {}^{2 + } \: \: and \: \: O {}^{2 - } [/tex]
As a result, Calcium oxide is formed due to ionic or electro valent bonding.
[tex]CaO[/tex]
Which functional group is shown below?
cd
R
O-R
A. Amino
B. Hydroxy!
C. Ether
D. Ester
Ester functional group is the given image. Therefore, the correct option is option D among all the given options.
What is functional group?A functional group in organic chemistry is a substituent and moiety inside a molecule that triggers the molecule's distinctive chemical processes. No matter how the rest of a molecule is made up, the very same functional group would experience the same or a similar set of chemical events.
This permits the planning of chemical synthesis as well as the methodical prediction of chemical changes and the behavior of chemical molecules. Other functional groups close by can affect a functional group's reactivity. Retrosynthetic analysis can be used to design organic synthesis by using functional group interconversion. Ester functional group is the given image.
Therefore, the correct option is option D.
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Answer: D. Ester
Explanation:
the oxidation number of all the element in free state is 0
Answer:
Zero-Nine
Explanation:
this is becasue these numbers are rather small and if you plug these numbers into an equation you will most likely get 0.
the crane dropped the 75 kg mass with velocity of 3.2m/s. Calculate the kinetic energy of the mass
Answer:
click the link
Explanation:
In a chemical reaction, one of the chemical reactants is present in______ to make sure that the limiting reagent is completely consumed.
Answer: excess
Explanation: i guesses and got the answer right
Copper metal is placed in a solution of silver nitrate. Write out the net ionic of the net equation for the reaction that occurs.
Answer:
[tex]Cu(s)+2Ag^+(aq)\rightarrow Cu^{2+}(aq)+2Ag(s)[/tex]
Explanation:
Hello there!
In this case, according to the given description of the reaction whereby copper metal reaction a solution of silver nitrate; it turns out possible for us to write out the resulting net ionic equation by firstly write the complete molecular equation:
[tex]Cu(s)+2AgNO_3(aq)\rightarrow Cu(NO_3)_2(aq)+2Ag(s)[/tex]
Now, we write the complete ionic equation, by taking into account that just the aqueous species are ionized:
[tex]Cu(s)+2Ag^+(aq)+2(NO_3)^-(aq)\rightarrow Cu^{2+}(aq)+2(NO_3)(aq)+2Ag(s)[/tex]
And finally, we cancel out the nitrate ions as the spectator ones in order to obtain:
[tex]Cu(s)+2Ag^+(aq)\rightarrow Cu^{2+}(aq)+2Ag(s)[/tex]
Regards!
A meteorologist predicts that a hurricane is going to make landfall in Florida. Which of the following could the citizens of Florida expect?
A
damaged properties
B
flooding
C
potential evacuation
D
draught
E
decreased winds
Answer:
I would go with C or A
Explanation:
Explain the greenhouse gas effect
What is the number of grams of N2(g) that contains 9.02 x 10^23 molecules?
.....................................................................................
Population doubles in ever decreasing time periods, especially since 1850. What is responsible for this trend?
The use of fossil fuels for electricity.
The larger the population the larger the increase.
Humans eliminated or controlled all their natural predators.
Answer: The larger the population the larger the increase.
Explanation:
After the agricultural explosion of the 18th and 19th centuries, the human population grew exponentially. The thing about exponential growth is that the larger the population that is increasing, the larger the increase.
As more children were born, these children gave birth to even more children which ensured that human population doubled in little time. For instance, two people give birth to 2 children who then give birth to 2 children each - we now have 8 people. Compare this to two people giving birth to 5 children who then give birth to 4 children each.
The latter became the norm after 1850 and is why the population kept growing faster.
Answer:
Its A^^
Explanation:
Silicon is a metalloid element commonly found in Earth's crust. It helps form many different compounds, which have a variety of different properties and applications.
One type of silicon-containing minerals is asbestos. Asbestos is resistant to heat and electricity, leading to its widespread use in manufacturing and the construction industry. Asbestos insulates buildings and makes them fire resistant. However, despite its usefulness, exposure to asbestos fibers or dust carries serious health risks that can cause respiratory disease or cancer.
Another silicon-containing compound is orthosilicic acid. Unlike asbestos, orthosilicic acid seems to benefit human health. This compound readily dissolves in water and is biologically stable enough to be used in the human body. Scientists have found evidence that orthosilicic acid plays an active role in the maintenance of strong bones.
The information above shows that silicon has both beneficial and detrimental effects on the human body. Given this information, think about other examples of materials or substances that can be both beneficial and detrimental at the same time. Research and write about two examples. Be sure to provide evidence to support your point of view.
Answer:
1. Zinc
Zinc also plays a vital role in our body because it is the main component of all cells and also provides protection against microbes. It is also needed for the production of DNA and protein. Zinc is good to take when you are feeling sick with a cold or even a sore throat. But Zinc in excess amount can cause copper deficiency, upset stomach aches, and diarrhea
2.Iron
Iron is a major component of hemoglobin which is responsible for the transportation of oxygen from the lungs to all cells of the body. Women take to iron a lot to give them energy after childbirth because they become iron deficient. Iron in excess can have a negative effect on our body such as it causes liver disease (cirrhosis, cancer), heart attack, diabetes and sometimes it causes death.
Explanation:
Here is number 1 thank you again
Answer: i believe the answer is stayed the same
I hope u get this right
which of the following best describes a neutron? A. It is located in the electron cloud and has a negative charge. B. It is located in the electron cloud and has no charge. C. It is located in the nucleus and has no charge. D. It is located in the nucleus and has no positive charge.
C. It is located in the nucleus and has no charge
Explanation:
here ya go :)
witch one is bigger 25yd or 75ft
Answer: in 25 yards there is 75 feet. Witch is the same to say that 25 yards is 75 feet.
Explanation:
Answer:
25yd is bigger
Explanation:
GIVE ME BRAINLIEST!!!!
nah im jk lol
ANYWAY HAVE A GREAT DAY!
Answer:
okie then you too
how are the earth and moon alike
Answer:
they both revolve or rotate around something
Explanation:
The earth revolves around the sun and the moon rotates around the earth.
What is the mass of an electron? Please help
Answer:
9.10938356 × 10-31 kilograms
Explanation:
lightest stable subatomic particle known. It carries a negative charge of 1.602176634 × 10−19 coulomb, which is considered the basic unit of electric charge. The rest mass of the electron is 9.1093837015 × 10−31 kg, which is only 1/1,836the mass of a proton.
Answer: Hope This Helps
Explanation:
Here's just some additional information: Electron Mass In physics, the electron mass or mass of electron or electron rest mass one of the fundamental constants and is defined as the mass of a stationary electron. Denoted by m e. The value of electron mass is also known as the invariant mass of an electron
(Also, the screenshot is the answer. Also, can i have brainliest so i can go to next rank! Thanks and have a blessed day!)
What is one thing people can do to protect biodiversity?
In the water for several hours now what does this mean for the number of energy storage molecules in the algae
Answer:
Increases.
Explanation:
The number of energy storage molecules in the algae increases if it is kept in sunlight and water for several hours because the algae prepare their own food through the process of photosynthesis. The algae used water and carbondioxide from the surrounding environment in the presence of sunlight produces glucose and oxygen. This glucose is used to produce energy storage molecules is called ATP molecules that is used for performing different activities.
Indique el valor de los números n,l,m y s para el último electrón de ₇N.(1 pt c/u) n = _____ l = _____ m = _____ s =_____
Answer:
n = 2
l = 1
m = 1
s = +1/2
Explanation:
₇N tiene la configuración electrónica;
1s2 2s2 2p3
Esto implica que este último electrón tiene los siguientes números cuánticos;
n = 2
l = 1
m = 1
s = +1/2
Este último electrón estará en un orbital de 2pz como lo muestran los números cuánticos enumerados anteriormente.
Explain the volume of ideal gasses as related to the molar concept.
Answer:
n = Initial volume/22.4L
Explanation:
The molar concept is simply one that is used to find the Number of moles and explain the relationship it has with avogadro's number, molecular mass, molar mass e.t.c.
Now, in terms of molar mass, number of moles is given by the formula;
n = mass of the sample/molar mass
In terms of avogadro's number, number of moles is;
1 mole = avogadro's number = 6.02 × 10^(23)
Now, when dealing with ideal gases, the molar volume of an ideal gas is 22.4 L.
Now the relationship between this volume and the mole concept is that the number of moles is gotten by dividing the initial volume by this molar volume.
Thus;
n = Initial volume/22.4L
HELP
Compare and contrast the inner and outer planets.
Answer:
The four inner planets have slower orbits, slower spin, no rings, and they are made of rock and metal. The four outer planets have faster orbits and spins, a composition of gases and liquids, numerous moons, and rings. The outer planets are made of hydrogen and helium, so they are called gas giants. Cool stuff right?
Explanation:
there are 4 wavelengths that are emitted from a hydrogen atom that can be seen by the human eye. Two of the wavelengths are the same color. what color are they?
a) red, blue, and violet
b) orange, yellow, and green
C) red, orange, and yellow
D) blue, indigo, and violet
Answer:
The correct answer is - a) red, blue and violet.
Explanation:
In the visible spectrum, the hydrogen atom emits four different wavelengths that are visible to the human eye. The four wavelengths are these lines are 656 nm, 486 nm, 434 and 410 nm. Shorter wavelengths are not visible to human eyes fall in ultravoilet lights at less than 400 nm.
The H-α line is the red color wavelength at 656 nm, the blue color has two different wavelengths that are 486 nm sometimes called cyan, and 434 nm, and violet at 410 nm.