Answer:
See Explanation
Explanation:
In electrolysis, a solution called the electrolyte is decomposed by the passage of direct current through it.
The points through which current enters and leaves the electrolyte are called electrodes. In electrolysis, oxidation occurs at the anode and reduction occurs at the cathode.
In the electrolysis of water; at the anode oxygen is produced as follows;
4OH^-(aq) -----> 2H2O(l) + O2(g) + 4e
A train travels 854 meters in 75 seconds. What is the speed of the train?
Answer:
11.3m/s
Explanation:
what is motion of a force in kinetic energy
Answer:
Kinetic energy, form of energy that an object or a particle has by reason of its motion. If work, which transfers energy, is done on an object by applying a net force, the object speeds up and thereby gains kinetic energy.
Groups of atoms repeat to make up a substance?
True
False
Answer:
ITS TRUE!!!!!
Can someone help with 10 a and b please
Answer:
for question a element A and B are isobars
for question b element C and D have the same atomic numbers.
Explanation:
element A and B are isobars because they have the same mass numbers but different atomic numbers. The different atomic numbers is as a result of the difference in proton number of each elements A and B. (A and B are two different elements). element C and D are isotopes of the same element because they have the same atomic numbers (same number of protons) but differ in number of neutrons resulting in the different number of mass numbers. (C and D are the same elements)What are several ways that humans destroy an ecosystem?
Answer:
Some human activities that cause damage (either directly or indirectly) to the environment on a global scale include population growth, overconsumption, overexploitation, pollution, and deforestation, to name but a few.
Explanation:
Hope this helped!!!
There are many organ systems that make up the human body. Although most of these systems, such as the skeletal and muscular systems, are almost the same in males and females, one is very different. The male and female reproductive systems are made up of different organs, with different functions. The male reproductive system contains the _________, which _________. A. ovaries; produce eggs B. bladder; stores urine C. kidney; filters the blood D. testes; produce sperm
Answer: The male reproductive system contains the TESTES; which PRODUCE SPERM. The correct option is D
Explanation:
There are different organ systems in the human body which functions together to bring about the normal healthy status of an individual. To list but a few, these systems include:
--> skeletal and muscular system
--> Endocrine System,
--> Nervous System, and
--> REPRODUCTIVE SYSTEM
The reproductive system is made up of the male and the female reproductive system which are very different as it's consists of different organs with different functions.
The male reproductive system consists of:
--> scrotum
--> Testes
--> prostate gland
--> seminal vesicles
--> penis.
The SPERM (spermatozoa) are produced in the seminiferous tubules of the TESTES and mature as they pass through the long and convoluted epididymis, where they are stored. Therefore option D is the correct answer.
In the following reaction, the partial
pressure at equilibrium for each of the
products, CO and water vapor at 990°
C, is 11.0 atm and the partial pressure
for each of the reactants, H2 and CO2,
at equilibrium is 8.70 atm. What is Kp?
H2(g) + CO2(g) + H2O(g) + CO(g)
Kp = [?]
Answer:
H2+CO2=H2O+CO
Kp=(pCO)(pH2O)/(pH2)(pCO2)
= 11×11/8.70×8.70
=1.60
How many possible Mole Ratios are in the following reaction:
ZnO + 2 HCl --> ZnCl2 + H2O
Answer: 2 moles
Explanation:
Explain why most inorganic substances do not burn, yet organic substances will
burn.
Most inorganic substances do not burn because they do to contain carbon. Organic substances do contain carbon.
Define Neutralisation reaction along with examples.
Answer:
Please find the definition and example of neutralization reaction below
Explanation:
In chemistry, neutralization reaction is a type of reaction involving a base and an acid to form salt and water. In other words, when an acid and a base comes together chemically to form a salt and water, a neutralization reaction is said to occur.
For example; in a reaction between sodium hydroxide (NaOH) and hydrogen chloride (HCl) as follows:
HCl(aq) + NaOH(aq) → NaCl(s) + H2O(l)
In this neutralization reaction, the HCk is the acid while the NaOH is the base (reactants). For the products, the NaCl is the salt while H2O is water.
Which indicator would show a pH change from 6 to 7? A. Red litmus indicator B. Methyl red indicator C. Phenol red indicator D. Blue litmus indicator
Please legitimate answers only
Answer:
The correct answer is Choice C.
(Phenol red indicator.)
Explanation:
Phenol red indicator is an organic dye that acts as an acid-base reaction indicator in the pH range of 6.8 to 8.4.
In acidic solutions, the color is purple, and in simple solutions, the color is red.
Hope this helps!
Please mark me as Brainlinieast.
Answer:
phenol red indicator
Explanation:
As water starts to freeze, the molecules of water
A. decrease speed
B. move more freely
C. gain thermal energy
D. increase in size
Kinetic energy is an energy present in the object with motion. When the water freezes then the speed of the molecules decreases. Thus, option A is accurate.
What is the relation between kinetic energy and temperature?Kinetic energy is possessed by an object when it is in moving motion and because of the molecules. When the temperature decreases the movement of the molecule decreases.
The decrease in the kinetic energy results in a gain of potential energy and release of heat in the surrounding. The temperature and the kinetic energy are directly proportional and affect the speed of the molecules.
Therefore, the freezing of water results in decreased speed of the water molecule.
Learn more about kinetic energy here:
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Find [H+] of a 0.056 M hydrofluoric acid solution. Ka = 1.45 x 10-7
Answer: [tex][H^+][/tex] of 0.056 M HF solution is [tex]8.96\times 10^{-5}[/tex]
Explanation:
[tex]HF\rightarrow H^+F^-[/tex]
cM 0 0
[tex]c-c\alpha[/tex] [tex]c\alpha[/tex] [tex]c\alpha[/tex]
So dissociation constant will be:
[tex]K_a=\frac{(c\alpha)^{2}}{c-c\alpha}[/tex]
Give c= 0.056 M and [tex]\alpha[/tex] = ?
[tex]K_a=1.45\times 10^{-7}[/tex]
Putting in the values we get:
[tex]1.45\times 10^{-7}=\frac{(0.056\times \alpha)^2}{(0.056-0.056\times \alpha)}[/tex]
[tex](\alpha)=0.0016[/tex]
[tex][H^+]=c\times \alpha[/tex]
[tex][H^+]=0.056\times 0.0016=8.96\times 10^{-5}[/tex]
Thus [tex][H^+][/tex] of 0.056 M HF solution is [tex]8.96\times 10^{-5}[/tex]
What does it mean to say that scientific models are open to change? (2 points)
a
Scientific models are usually not very accurate.
b
Scientific models can be adjusted when new information is found.
c
People can adjust scientific models to fit their personal beliefs.
d
Experimental results can be changed to fit the accepted model
hello my BEANS i want to know if u r a girl or a boy so if i call u a boy and u r a girl i am not a bad person i am 13 and i am good and not a robot pls dont repot me pls
Answer:
okie
Explanation:
imma girl
Balance C12H22011 → C + H2
Answer:
What is this?
Explanation:
A gaseous mixture contains 5.0 moles of nitrogen and 10.0 moles of helium . What is the total pressure if the temperature is 25 degrees C and the volume is 3.0 L? a) 122 atm
B) 56 atm
d) 2.0 atm
C)3.0 atm
Answer:
A) 122 atm
Explanation:
PV = nRT
Solve for P --> P = nRT/V
n = 10.0 mol + 5.0 mol = 15.0 mol
R = 0.08206 L atm / mol K
T = 25 + 273 = 298 K
V = 3.0
P = (15.0)(0.08206)(298) / (3.0) = 122 atm
Heat is the measure of the average kinetic energy of particles; temperature is the measure of the transfer of thermal energy .
true or false
Explain why has a higher boiling point than NH3
Explanation:
Melting point = -33.34°cboiling point=77.73°cExplain ways humans can reduce global warming. Use 4-5 complete sentences.
pls show your work thx
Explain ways humans can reduce global warming
The list of ways humans can reduce global warming includes: driving affordable electric cars, increasing the use of wind and solar energy in communities, and reducing water waste like plastic bottles. Greenhouse gases in the atmosphere cause global warming and air pollution. Also, reducing wastage that affects our soil benefits agriculture and freshwater locations. Conserve energy by turning off your lights, walking or riding your bicycle, and invest in solar energy. Solar energy can decrease greenhouse gas emissions in our air that we beathe! Affordable solar energy helps the enviorment and poorer communites with reducing air pollution.
Why do girls like boys who act rude more than boys that are actually nice!
Answer:
When a guy who shows a girl to much emotion, they get turned off.
Explanation:
(06.05 LC)
Why is it important to maintain records of the procedures of an experiment?
points)
Multiple Choice
How is thermal energy transferred between two objects that are at different temperatures?
Group of answer choices
Heat flows from the object that has more thermal energy to the object with less thermal energy.
The object at a lower temperature pulls heat from the warmer object.
Heat flows from the warmer object to the cooler object until they reach the same temperature.
Heat flows back and forth between the two objects untl they reach the same temperature.
Answer:
heat flows from the object that has more thermal more energy to the object with less thermal energy
A common characteristic of killers who choose poison as their weapon. This way they can avoid having to confront their victim me directly.
Answer:
The killers who choose poison for killing the victim are the one who does not want to confront the victim. When a knife or a bullet is used to kill a person he may struggle and can cause harm to killer also.
Explanation:
Poison is the most easiest way to kill a person without any struggle. The poison can be given to a person in a juice or through an injection. The poison entered in the body of victim will cause his heart to cease gradually and he will not have energy to struggle with the killer to save his life.
Select all that apply.
Which of the following are density labels?
Okg
L
09
m
og
mL
g
1. A sample of oxygen gas has a volume of 150 ml when its pressure is 440 mmHg. If the pressure is
Increased to standard pressure and the temperature remains constant, what will the new volume be?
Answer:86.84
Explanation:
1,670,000,000 in
scientific notation pleaseeee
Answer:
1.67 × 10^9
Explanation:
Burning is a reaction in which oxides are formed by combining ______ and _________.
Answer:
Burning is a reaction in which oxides are formed by combining fuel(reductant) and oxidant.
Explanation: Ex charcoal and lighter fluid
Hope this helps
4. Identify What do scientists call a substance that forms during a chemical reaction?
5. Identify On what side of the equation are reactants found?
Answer:
4. Reactant
5. Left
I hope this helps ❤️❤️
Granite cools very slowly from magma and therefore has very large crystals that are visible with the naked eye. Granite can be classified as —
A.
an igneous rock.
B.
a metamorphic rock.
C.
a sedimentary rock.
D.
an extrusive rock.
Answer:
A
Explanation:
Igneous rock forms from cooled lava