Answer:
b. ph is greatet than 7
Explanation:
ph=7 neutral
ph=7-14 basicity as you go up increase basicity
ph=0-7 acodity as you go down increasing acidity
What is the relationship of tissues to cells?
Tissues make cells.
Cells make up tissues.
Tissues are use for cell growth.
Cells help tissue grow.
The reaction a(g)⇌b(g) has an equilibrium constant of 5.8 and under certain conditions has q = 336. part a what can you conclude about the sign of δg∘rxn and δgrxn for this reaction under these conditions?
Answer:
The answer is "As [tex]Q=336[/tex], at high-temperature [tex]\Delta G_{rxn}>0[/tex] and When[tex]K>1,[/tex][tex]\Delta G^{\circ}_{rxn}>0[/tex]."
Explanation:
The equation for the reaction is:
[tex]A(g) \leftrightharpoons B(g)[/tex]
[tex]K=5.8\\\\Q=336[/tex]
At equilibrium,
[tex]\Delta G^{\circ}_{rxn}>0[/tex][tex]=-RT \ln \ K[/tex]
When k=5.8(>1), the value of [tex]\ln k[/tex] would be positive
So, [tex]\Delta G^{\circ}_{rxn}[/tex] is negative (< 0)
So if K > l, [tex]\Delta G^{\circ}_{rxn}<0[/tex]
If the reaction is not in equilibrium so the equation is :
[tex]\Delta G_{rxn}>0[/tex]=[tex]\Delta G^{\circ}_{rxn}[/tex][tex]+RT \ln Q[/tex]
Substituting the expression:
[tex]\Delta G_{rxn}>0[/tex][tex]= (-RT \ln K) + RT \ln Q[/tex]
[tex]= RT(\ln Q- \ln K)\\= RT(\ln (336)-\ln (5.8))\\= RT(4.06)[/tex]
It is the positive value for all temperatures.
So, As Q = 336, at the high temperature [tex]\Delta G_{rxn}>0[/tex].
Which of the following can be classified as a good conductor of thermal energy?
plastic
wood
rubber
copper
Someone please help i have to get it done today
bud but i think
is in it forsure
A farmer wants to build a pond for her cows. What step must she take in order to build the pond?
A. Dig into the zone of aeration.
B. Place a permeable material on the ground.
C. Keep the soil moist.
D. Place an impermeable material on the ground.
Answer:
Option A:
Dig into the zone of aeration
Explanation:
Within the lithosphere of the earth's surface, the zone of aeration is the zone directly above the water table, with a lot of pore spaces within the rocks. These pore spaces contain air and water, which can be used to water the cows.
Once the zone of aeration has been dug into, the farmer can tap into the underground reserve of water, which is stored within the pores of rocks. This water can now sip into the hole that was dug up by the farmer, forming a pond for the cows.
C219
COMPLETE
-241.82
What is the enthalpy of reaction for the
decomposition of NO2(g)?
H2O(g)
NO2(g)
33.84
2NO2(g) → N2(g) + 2O2(g)
11 kJ
This reaction is
Answer:
a
Explanation:
An _______________________ (device that converts electrical energy into kinetic energy) runs by using the magnetic field formed by a ______________________________ formed into a loop.
Answer:
A motor (device that converts electrical energy into kinetic energy) runs by using the magnetic field formed by a flowing current formed into a loop.
Which of these is not a characteristic of sponges?
lack a backbone
lack a brain
stationary
have a nervous system
14. As the moles of salt added are increased, what
happens to the melting point of the water?
Salt increases the boiling point and decreases the melting point of water. That means if you add salt before heating some water on the stove, it will take longer to boil. Also, if you add salt to ice, it will melt faster.
What is the melting point?
Melting point is the temperature at which a given solid material changes from a solid state to a liquid, or melts.
Salt makes water boil at a higher temperature - water sticks to the salt ions, so they can't get out of the liquid as easily.
Salt makes water freeze at a lower temperature - it's probably harder for the water molecules to get organized into a solid-state with all the salt ions messing up its structure.
Hence, as the moles of salt are added melting point of the water increases.
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Um help plzzzzzzzzzzz
Air is made of nitrogen, carbon dioxide, and small amounts of other gases. What is the pressure of O₂, total is 1 atm if PN₂ = 593.4 mm Hg, PCO₂ = 3.0 mm Hg, and Pothers = 7.1 mm Hg? *
0.3 atm
0.2 atm
0.4 atm
0.8 atm
Answer:
The pressure of O₂ is 0.8 atm.
Explanation:
The pressure exerted by a particular gas in a mixture is known as its partial pressure. So, Dalton's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas would exert if it were alone:
PT = PA + PB
This relationship is due to the assumption that there are no attractive forces between the gases.
In this case:
PT=Pnitrogen + Pcarbon dioxide + Pother gases
Being:
Pnitrogen: 593.4 mmHg Pcarbon dioxide: 3 mmHgPother gases: 7.1 mmHgand replacing:
PT= 593.4 mmHg + 3 mmHg + 7.1 mmHg
you get:
PT= 603.5 mmHg
Being 760 mmHg= 1 atm, you get:
PT= 603.5 mmHg= 0.8 atm
The pressure of O₂ is 0.8 atm.
Convert 1.4 x 1024 molecules of H2O to grams of H20.
Answer:
41.8 g of water.
Explanation:
To solve this, we introduce the concept of mol.
1 mol of anything contains 6.02×10²³ particles.
In this case, we talk about molecules of water.
Molecular weigh is 18 g/mol which indicates that 1 mol of water weighs 18 g.
So let's do the conversion
(18 g of water / 6.02×10²³ 1 mol of molecules) . 1.4×10²⁴ molecules = 41.8 g
Crude oil is a liquid kind of what?
Answer:
Crude oil is a mixture of comparatively volatile liquid hydrocarbons (compounds composed mainly of hydrogen and carbon), though it also contains some nitrogen, sulfur, and oxygen. Those elements form a large variety of complex molecular structures, some of which cannot be readily identified.
State of Matter
Can someone help me ?
Answer:
HBrO forms hydrogen bonds with each other and with water
Acetic acid forms hydrogen bonds with each other and with water
Formaldehyde can't form hydrogen bonds to each other but do form hydrogen bonds with water.
Explanation:
The hypohalous acids are polar molecules hence they form intermolecular hydrogen bonds. They also form hydrogen bonds with water. This enables it to dissolve in water.
Acetic acid can form dimmers with each other due to hydrogen bond formation. Also, acetic acid is capable of forming hydrogen bonds with water. This enables acetic acid to dissolve in water.
Aldehydes do not form intermolecular hydrogen bonds with each other because there is no hydrogen atom attached directly to oxygen in aldehydes. As such, they can only form hydrogen bonds with water. This accounts for the water solubility of low molecular weight aldehydes. Hence, formaldehyde can't form hydrogen bonds to each other but do form hydrogen bonds with water.
name any two
chemical fertilizers rich in potassium
Explanation:
Fertilizers are chemically synthesized plant nutrients.
Nitrogen (N), Phosphorus (P) and Potassium (K) are macronutrients and are required in large amounts by plants. So, farmers use fertilizers in order to supply these nutrients. NPK 15:15:15 , NPK 20:20:20, NPK 15:30:15 are examples of fertilizers used to supply N, P, K to crops.
Explanation:
1.Potassium Nitrate(KNO3)
2.Potassium Sulphate(K2SO4)
They provide potassium to plants for making their roots and shoots healthy.
Why do you think some people prefer genetically modified food?
Trihydrogen monophosphide is a covalent molecule that can also act as an acid. What is the correct acid name for trihydrogen monophosphide ?
Answer:
H₃P phosphidic acid
Explanation:
The Trihydrogen monophosphide, as stated in the exercise, can act as an acid. This is pretty similar to the case of hydrogen chloride, which is a gas but it can also be an acid, in this case, chloridic acid.
In the case of trihydrogen phosphide, we can write it molecular formula which is:
H₃P
Now, this is a binary compound because its composed of only two elements, in this case, hydrogen and phosphide. To name binary acid, we need to name the non metal with the sufije idic, and then, the word acid.
Following this simple rule, the trihydrogen phosphide would be, as acid:
H₃P: phosphidic acid
Hope this helps
The first medical encyclopedia was written by an Arab scholar. Please select the best answer from the choices provided T F
Answer:
True
Explanation:
Asclepius known as the God of medicine, it is said to be healing in ancient Greek religion thag stands for thd healing aspect of the medical arts.
Medical encyclopedia is referred to as a general reference information that is used as sorting out medical related issues. It is a compilation of well written book or document that consists lf information that are related to diseases, medical cases, different tests, symptoms of the ailments, injuries, surgeries etc. and the documents have an a well broad photos of medicine-related photographs and others.
Answer:
T
Explanation:
Which of these is the BEST definition of "civilization" for a history class? A) the way people talk B) a group that has a culture C) the ability to walk upright D) how sophisticated people behave
Answer:
Is C
Explanation:
In order to expand agriculture and urban areas to meet increased demand for growing populations, water supplies often have to be diverted. In three to five sentences, construct a potential chain of consequences for what could happen when water is diverted from large bodies like lakes and rivers
Answer:
Decrease occur in the amount and flow of water bodies.
Explanation:
There is decrease in the amount and flow of water from water bodies such as rivers and lakes etc occur when the river is diverted from large water bodies because the water flows to the diverted sides and decrease occurs in the amount of water in the rivers and lakes. Those regions from where this river passes can also be negatively affected due to low amount of water they receives for their daily needs or for cultivation of crops so we can say that this diversion has adverse effect on other populations.
why can lime juice remove rust stain
Answer:
El limon por su alto contenido en ácido cítrico, actúa como un excelente limpiador natural debido a su bajo pH y propiedades antibacterianas. A parte de todas estas propiedades, los limones huelen muy bien y es una rareza que pudiesen manchar o dañar algún material de la casa.
Explanation:
Answer:
It's the citric acid reacting to the iron oxide -which is basically the rust- it dissolves.
Explanation:
Can someone please write this in y’all’s own words please and I’ll give you branly
Answer: we can make our own water and not take any water from animal.
Explanation:
some one help me with this please
Answer:
no pics sorry. v vc. gkfgildhrmsykesetksyekuxrux
WILL GIVE BRAINLIEST PLEASE HELPP!!!
Answer:
I think C...................
If I add 25 mL of water to 125 mL of a 0.15 M NaOH solution, what will the molarity of the diluted solution be? (convert mL to L and round answer to 3 decimals)
Answer:
0.75 M
Explanation:
M1 = 0.15 M
V1 = 125 mL or 0.125 L
M2 = Y
V2 = 25 mL or 0.025 L
0.15 M x 0.125 mL = Y x 0.025 L
Y = 0.15 M x 0.125 mL / 0.025 L
Cancel out the mL
Y = 0.01875M / 0.025 L
Y = 0.75M
Answer:
0.125 M
Explanation:
M₁V₁ = M₂V₂
125 mL / 1000 = 0.125 L = V₁
25 + 125 = 150 mL / 1000 = 0.150 L = V₂
0.15 M = M₁
M₁ × V₁ / V₂ = M₂
(0.15) × (0.125) / (0.150) = 0.125 M
0.125 M is the answer
Cuántos gramos de cloruro de magnesio se pueden obtener si se hacen reaccionar 354,9g de cloruro de titanio (IV) y 285g de magnesio puro, Recuerde que como productos obtiene titanio y cloruro de magnesio.
a. escriba la ecuación balanceada
b. determine el reactivo limite
c. La cantidad de reactivo en exceso
Answer:
sorry I dont speak Spanish
what is the ratio of calcium and oxygen?
Answer:
5:2
//answer was too short //
Answer:
The ratio by mass for calcium and oxygen in a calcium oxide is given by 5:2
hope it helps
how many electrons does each cl atom gain?
Answer: 18
Explanation:hope this help
An element has the atomic number 72. The number of protons and electrons in a neutral atom of this element is
Explanation:
Hi,
The number of protons is equal to the atomic number. The number of electrons in a neutral atom is equal to the number of protons. So, in this case, you have 72 protons and 72 electrons.
I hope this helps :)
If an element has the atomic number 72, then the number of protons is also equal to 72. As it is clearly mentioned in the question that it is a neutral atom, which means the number of protons is equal to the number of electrons which is also 72.
What is meant by an Atomic number?An atomic number may be defined as the number of a chemical element in the modern periodic table through which the elements are systematically arranged in order of increasing the number of protons in the nucleus.
According to the context of this question, the atomic number of every element is always equal to the number of protons it has. While in a neutral atom, the number of electrons is equal to the number of protons. For calculating the number of neutrons, you have to subtract the atomic number from the atomic mass.
Therefore, there are 72 protons of an element whose atomic number is 72. The number of electrons is also 72.
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Will give lots of points if answered correctly. Determine the kb for chloroform when 0.793 moles of solute in 0.758 kg changes the boiling point by 3.80 °C.
Answer: The value of [tex]K_{b}[/tex] for chloroform is [tex]3.62^{o}C/m[/tex] when 0.793 moles of solute in 0.758 kg changes the boiling point by 3.80 °C.
Explanation:
Given: Moles of solute = 0.793 mol
Mass of solvent = 0.758
[tex]\Delta T_{b} = 3.80^{o}C[/tex]
As molality is the number of moles of solute present in kg of solvent. Hence, molality of given solution is calculated as follows.
[tex]Molality = \frac{no. of moles}{mass of solvent (in kg)}\\= \frac{0.793 mol}{0.758 kg}\\= 1.05 m[/tex]
Now, the values of [tex]K_b[/tex] is calculated as follows.
[tex]\Delta T_{b} = i\times K_{b} \times m[/tex]
where,
i = Van't Hoff factor = 1 (for chloroform)
m = molality
[tex]K_{b}[/tex] = molal boiling point elevation constant
Substitute the values into above formula as follows.
[tex]\Delta T_{b} = i\times K_{b} \times m\\3.80^{o}C = 1 \times K_{b} \times 1.05 m\\K_{b} = 3.62^{o}C/m[/tex]
Thus, we can conclude that the value of [tex]K_{b}[/tex] for chloroform is [tex]3.62^{o}C/m[/tex] when 0.793 moles of solute in 0.758 kg changes the boiling point by 3.80 °C.