Answer:
The percent yield for ethanol in this process is 95.2%
Explanation:
Yield is the ratio between the amount of product actually obtained in the reaction and the maximum amount of product that could have been obtained if the reagents had been completely consumed.
The theoretical yield is the yield is the maximum you can get in a reaction.
On the other hand, the actual performance shows what you really get in experimentation. It is generally less than the theoretical yield.
So, the percentage return is the actual return times the theoretical return multiplied by 100.
So, in this case the percentage yield will be calculated as:
[tex]percent yield=\frac{4,760 kg}{5,000 kg} *100[/tex]
percent yield= 95.2%
The percent yield for ethanol in this process is 95.2%
Pb(OH)4 + Cu2O --> PbO2 + CuOH what is the balanced equation
Answer:
Pb(OH)4 + 2Cu2O → PbO2 + 4CuOH
Explanation:
Pb(OH)4 + Cu2O --> PbO2 + CuOH
The end goal of balacing chemical equations is to make sure there is no gain or loss of atoms of elements. Number of atoms of elements in the left side (reactant) must balance with the right side (product) of the reaction.
Currently, the number of Cu, H and O atoms are not balanced.
Pb
Reactant = 1, Product = 1
O
Reactant = 5, Product = 3
Cu
Reactant = 2, Product = 1
H
Reactant = 4, Product = 1
The balanced equation is given as;
Pb(OH)4 + 2Cu2O → PbO2 + 4CuOH
Pb
Reactant = 1, Product = 1
O
Reactant = 6, Product = 6
Cu
Reactant = 4, Product = 4
H
Reactant = 4, Product = 4
The specific heat of water is 4.2j/g ºC how much heat is required to raise the temperature of 100 g of water by 5 ºC
Answer:
116,823 J
Explanation:
formula : q=m C delta T
q = heat = unknown
mass = 100 g
C = specific heat = 4.2 J/K*g
delta T = temperture in Kelvins: 5 + 273.15 = 278.15 K
q = (100 g) ( 4.2 J/K*g) (278.15 K) = 116,823 J
!!! would anyone be willing to double check this :00
If 5.0 moles of O2 and 3.0 moles of N2 are placed in a 30.0 L tank at a temperature of 25° C, what will the pressure of the resulting mixture of gases be?
25° C = 298°K
P (O2) = 5.0atm
P (N2) = 3.0atm
Ptotal = 6.5atm
Answer:
you got this
Explanation:
because it is confusing
what is Pb+FeSO4-->PbSO4+Fe balanced and the type of reaction?
Answer:
It's simple substitution reaction and there is no balance for the equation. It's right written.
Explanation:
Analyze the given diagram of the carbon cycle below. Use complete sentences to explain your answer.
Part 1: Which process does arrow F represent?
Part 2: Explain how matter is conserved during the process.
Part 3: Justify why this process is a recycling of carbon in the carbon cycle.
Answer:
I'm not to sure I'll ask one of my frens to help
What is a fuel ?....................................
Answer:
A fuel is a natural substance that, when burned, produces energy (usually thermal/heat energy)
Answer:
Fuel is something that can be used to make some actions happen. Fuel is something that can be made to react with some other substances so that it releases energy as heat energy or some other kind of energy
For an experiment, Yolanda rubs a cloth against a balloon and places the balloon next to running water. What happens? The balloon breaks from the pressure of the water. The charged balloon repels the water. The uncharged water is attracted to the charged balloon. The water spills over the balloon, and the balloon gets wet.
Answer:
The uncharged water is attracted to the charged balloon.
Explanation:
Electrostatics is the study of charges at rest. Neutral bodies have equal and evenly distributed positive and negative charges. However, these neutral bodies can become either positively or negatively charged. These charges can be produced by either of friction, contact or electrostatic induction.
For example, when an ebonite rod is rubbed with fur, the ebonite rod acquires a charge by friction. The ebonite rod becomes negatively charged while the fur is left with positive charges.
Similarly, for the experiment performed by Yolanda, when she rubs a cloth against a balloon, the balloon becomes negatively charged . Water is neutral in that it is composed of equal positive and negative charged particles. When she brings the balloon near the water, the positive charged particles in the water will move the water towards the negatively charged balloon since positive and negative charges are attracted to each other.
Small pools of water with ocean life.
One day, while walking along the coast, you encounter the area pictured here. You notice that most of the water is gone at low tide and that an abundance of life lives in this area.
To which ocean zone does this area belong?
Answer:
Intertidal zone (i think)
Explanation:
Answer:
A
Explanation:
can you explain how to convert 50psi to atm ?
Answer
50 Psi = 3.4023 atm
what is rainwater harvesting
Answer:
It is a technique of collection and storage of rain water
Please help if you can't see the awnsers there
A cytosine and Adenine
B adenine and deoxyribose
C cytosine and gallium
D phosphate and ribose
Look at the diagram below.
(+
When this atom becomes an ion, it will
(gain, lose)
electrons. The charge of this ion will be
ASAP QUICK
Answer:
if charge of ion is positive then it will loose electron
if charge of ion is negative it will gain electron
What is the ground state electron configuration for K
Explanation:
The ground state electron configuration of ground state gaseous neutral potassium is 4s1 and the term symbol is 2S1/2.
Energy can be .................. From one form to another................. Can be burned to make heat or electricity.
Answer:
transferred
Energy
Explanation:
Energy is the ability to change the state of bringing about a work leading to movement or generating electromagnetic radiation. There are actually many forms of energy. So, kinetic energy is a form of energy related to the movement of a body. The combustion, in turn, retrieves the potential energy chemical contained in fuels. Solar panels capture light energy to transform it into electrical energy.
Enter a balanced nuclear equation for the production of lutetium-177, used in the treatment of some cancers, from the beta decay of ytterbium-177.
Answer: [tex]_{70}^{177}\textrm{Yb}\rightarrow _{71}^{177}\textrm{Lu}+_{-1}^{0}\textrm{e}[/tex]
Explanation:
Beta-decay: In this process, a neutron gets converted into a proton and an electron releasing a beta-particle. The beta particle released is basically a electron with -1 charge and no mass.
[tex]_Z^A\textrm{X}\rightarrow _{Z+1}^A\textrm{X}+_{-1}^{0}\textrm{e}[/tex]
General representation of an element is given as:
where,
Z represents Atomic number
A represents Mass number
X represents the symbol of an element
[tex]_{70}^{177}\textrm{Yb}\rightarrow _{71}^{177}\textrm{Lu}+_{-1}^{0}\textrm{e}[/tex]
A 1.00 L volume of dry air is sealed inside of a round flask and brought to a temperature of 50.0°C in
a hot water bath. If the pressure gauge reads 3.60 atm, how many moles of gas are in the sample of
air?
Answer:
0.136mol
Explanation:
Using the general gas law equation as follows:
PV = nRT
Where;
P = pressure (atm)
V = volume (Litres)
n = number of moles (mol)
R = gas constant (0.0821 Latm/mol K)
T = temperature (K)
K = °C + 273
K = 50°C + 273
K = 323K
According to this question, P = 3.6atm, T = 323K, V = 1.00L, R = 0.0821 Latm/mol K, n = ?
3.6 × 1 = n × 0.0821 × 323
3.6 = 26.52n
n = 3.6/25.52
n = 0.1357
n = 0.136mol
If an atom has 5 protons, 5 neutrons and 5 electrons, what is the atom's atomic
number and atomic mass?
Answer:
Atomic mass is 10.81
PLEASE CAN SOMEONE EXPLAIN this FOR ME WHAT IS RADIOACTIVE ISOTOPES AND ANSWER THIS QUETION? A nitrogen atom has 7 protons and most common isotopes of nitrogen has 7 neutrons. A radioactive isotopes of nitrogen has 8 neutrons write the atomic number and mass number of this radioactive nitrogen as a chemical symbol with a subscript and superscript.
Answer:
[tex]\frac{15}{7}N[/tex]
Explanation:
We already know that the mass number of an atom is the sum of the number of protons and the number of neutrons.
So, the mass number of this isotope is;
Number of protons = 7
Number of neutrons = 8
Mass number = 7 + 8 = 15
Hence, the isotope is;
[tex]\frac{15}{7}N[/tex]
12 G of carbon react with 16 G of oxygen how much carbon monoxide is formed
Answer:
28 g CO
Explanation:
First convert grams to moles.
1 mole C = 12.011 g (I'm just going to round to 12 for the sake of this problem)
12 g C • [tex]\frac{1 mol C}{12 g C}[/tex] = 1 mol C
1 mol O = 15.996 g (I'm just going to round to 16)
16 g O • [tex]\frac{1 mol O}{16 g O}[/tex] = 1 mol O
So the unbalanced equation is:
[tex]C + O_{2}[/tex] -> [tex]CO[/tex] (the oxygen has a 2 subscript because it is part of HONClBrIF meaning when not in a compound these elements appear in pairs - called diatomic elements)
The balanced equation is:
[tex]2 C + O_2[/tex] -> [tex]2 CO[/tex]
However, carbon is the limiting reactant in this equation and two moles cannot react because only 12 g (1 mole) are present. Therefore, use the equation
[tex]C + \frac{1}{2} O_2[/tex] -> [tex]CO[/tex].
1 mole of CO is formed, therefore 12 g + 16 g = 28 g CO.
The element with 92 protons:
(I3) R A (D1) I U M
Which statement about the ocean is true?
1. No evaporation or precipitation in the water cycle occurs over the ocean.
2. Most evaporation and precipitation in the water cycle occur over the ocean.
3.All evaporation and precipitation in the water cycle occur over the ocean.
4.Evaporation, but not precipitation, in the water cycle occurs over the ocean.
Answer: The answer is probably B because most of the precipitation and evaporation in the water cycle happens over the oceans. Including, about 78 percent of the precipitation and 86 percent of evaporation.
The statement about the ocean is true is most evaporation and precipitation in the water cycle occur over the ocean. Therefore, option 2 is correct.
What is water cycle ?The continual movement of water on, above, and below the Earth's surface is referred to as the water cycle, also known as the hydrologic cycle or the hydrological cycle.
The water cycle is composed mostly of four processes: evaporation, convection, precipitation, and collection. When water in rivers, lakes, or the ocean is heated by the sun and turned into vapour or steam, this process is known as evaporation. The river, lake, or ocean releases water vapor or steam into the atmosphere.
The hydrologic cycle is crucial because it determines how water gets to people, plants, and other species. In addition to supplying water for people, animals, and plants, it also transports nutrients, diseases, and sediment into and out of aquatic habitats.
Thus, option 2 is correct.
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Can you guys help me please!!!!
Answer:
i think it is true
Explanation:
if it correct plz plz mark as brainliest
thank you
19NBoli
Answer:
i hope my answer help you
Explanation:
a/true
200cm3 of hydrogen diffused through a porous pot in 40secs. How long will it take 300cm3 of chlorine to diffuse the same pot?
If an atom has 6 electrons in its valence shell, how many will it want to gain or loose?
Answer:
gain2 electrons
Explanation:
that the answer to that question
how many molecules are in 2NaOH
Answer:
1 moles
I assume you are converting between moles 2NaOH and gram. You can view more details on each measurement unit: molecular weight of 2NaOH or grams The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles 2NaOH, or 41.99711 grams.
Explanation:
I hope this helps and pls mark me brainliest :)
Number of molecules are in 2NaOH are 12.044 × 10²³.
What is mole concept?Avogadro's number is the number of units in one mole of any substance and equals to 6.02214076 × 10²³. The units can be electrons, atoms, ions, or molecules.
No. of moles is defined as a particular no. of particles that we can calculate with the help of Avogadro’s number.
Mass of a particular product is also find out by stoichiometry of a reaction as per the no. of mole given in the reaction.
Given are 2 moles of NaOH.
one mole of any substance and equals to 6.02214076 × 10²³
Therefore, Number of molecules are in 2NaOH are 12.044 × 10²³.
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50.0 ml of 2.60 M HBr(aq) was exactly neutralized (final pH=7) by a 1.80 M solution of NaOH(aq). How much volume of of the NaOH solution was added ?
Answer:
72.2 ml
Explanation:
The neutralization equation between HBr (acid) and NaOH (base) is the following:
HBr(aq) + NaOH(aq) → NaBr(aq) + H₂O(l)
We can see that 1 mol of HBr reacts with 1 mol of NaOH. At the equivalence point, the total number of moles of HBr reacts with the total number of moles of NaOH. The number of moles can be calculated as the product between the molarity (M, in mol/L) and the volume (V). So, we can equal the quantities of acid and base, as follows:
moles HBr = moles NaOH
M(HBr) x V(HBr) = M(NaOH) x V(NaOH)
Now, we calculate the volume of NaOH with the data:
V(NaOH)= M(HBr) x V(HBr)/M(NaOH)
= (2.60 mol/L x 50.0 ml)/(1.80 mol/L)
=72.2 ml
a force that resists motion when objects touch is what
A force that resists motion when objects touch is friction. Frictional force is the force that prevents an object from moving.
What is friction ?The term friction is defined as the force that opposes the motion of a solid object over another. There are four types of friction that are static friction, sliding friction, rolling friction, and fluid friction.
Three factors in particular determine the frictional force between two bodies: The adhesion between body surfaces, the surface roughness, and the deformation of bodies are all factors.
Frictional force is the force that prevents an object from moving. The imperfections on the two surfaces in contact are what produce friction. The type of surfaces in contact affects friction.
Thus, A force that resists motion when objects touch is friction.
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An atom absorbs radiation. Select the possible changes this could have on the atom:
*it can change the atomic mass
*it can cause the atom to lose an electron
*it can cause the atom to become and ion
*it cause the atom to change element
Answer:
*it can cause the atom to become and ion
How does diffusion help cells maintain homeostasis as they produce energy through cellular respiration?
Answer:
Diffusion helps cells maintain homeostasis by allowing ions to move across the cell membrane to maintaing both the voltage across the membrane and the ion concentrations.
Diffusion helps in maintaining homeostasis by allowing movement of ions in and out across the cell.
What is diffusion?Diffusion is defined as the process of movement of molecules which takes place under concentration gradient. It helps in movement of substances in and out from the cell.The molecules move from lower concentration region to a higher concentration region till the concentration becomes equal.
There are 2 main types of diffusion:
1) simple diffusion-process in which substances move through a semi-permeable membrane without the aid of transport proteins.
2) facilitated diffusion- It is a passive movement of molecules across cell membrane from higher concentration region to lower concentration.
There are 2 types of facilitated diffusion one is osmosis and dialysis.
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What trend in atomic radius occurs down a group on the periodic table? What causes the trend?
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Explanation:
the further down the group you go, the larger the radius becomes. its caused by the amount of electrons needed to equal out the charge of the nucleus
Atomic radius increases down the group in the periodic table and due to the increase in the number of shells.
Explanation:
The group in the periodic table is a vertical column running from top to bottom.There is a total of 18 groups in the modern periodic table.Elements in the same group have the same number of valence electrons and chemical and physical properties.When we move down in a group the atomic radii of the elements increases because the number shell increases which results in increase atomic radii of the elementsMetallic character increases on moving down Non-metallic character decreases on moving down Ionization energy decreases down the group as the atomic size increases the distance of valence electrons from the nucleus also increases which reduces the effective nuclear charge on the valence electrons.So, from this, we can conclude that atomic radius increases down a group in the periodic table and due to the increase in the number of shells.
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