Answer:
copper oxide has been reuced into copper
Explanation:
The copper has gained electrons to become stable on its own without oxygen
OILRIG- show that reducution is the gain of electrons
How does the entropy of a geyser system change as energy is added to the system ??
Answer:
Entropy increases as temperature increases. An increase in temperature means that the particles of the substance have greater kinetic energy. The faster moving particles have more disorder than particles that are moving more slowly at a lower temperature.
Explanation:
The entropy of the system increase as the temperature increase because at higher temperature there will be more randomness in the molecules.
What is entropy?Entropy can be described as a measure of spontaneous changes that take place in a system. In simpler words, entropy is the tendency of the universe towards disorder.
Entropy measures of randomness or disorder of a thermodynamic system and is represented by ‘S’. The value of entropy is dependent upon the amount of substance so it is an extensive property.
The change in the value of entropy depends on changes in quantities such as temperature, pressure, volume, and the number of moles of substance present in the system.
When the temperature of the system increases the kinetic energy of the molecules increases and they start to move faster. Therefore, the entropy of the geyser system increase as energy is added to the system.
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A behavioral adaptation when an animal becomes inactive in the winter is _____.
A. hibernation
B. camouflage
C. migration
D.sleeping
Answer:
A. hibernation
Answer:
Hibernation.
Explanation:
How many moles are in 435 grams of sulfur, S?
Answer:
32.065 is the correct answer.
Electrons can occur only in specific
Answer: Electrons have wavelike motion and are restricted to certain energy states associated with specific wavelengths.
Sorah, Sammie,Victor, Vicki, ond Valerie are in math group. Two students are randomly picked to
be the co-captains. What is the probability thote students were ssmmie and Victor?
Answer:
[tex]\frac{2}{5}[/tex]
Explanation:
Probability refers to chances of occurrence of any event.
Value of probability is greater than or equal to 0 and less than or equal to 1.
Probability = Number of favorable outcomes ÷ Total number of outcomes
Total number of students in math group = 5
Also, 2 students are randomly picked to be the co-captains.
Probability that students were Sammie and Victor = [tex]\frac{2}{5}[/tex]
particles of liquids have enough energy to separate from other liquid particles true or false
Answer:
False
Explanation:
I particles have enough kinetic energy to partly overcome the force of attraction between them, matter exists as a liquid. The particles can slide past one another but not pull apart completely. This explains why liquids can change shape but have a fived volume.
What is it about the structure of magnesium atoms that makes them react more slowly than sodium atoms?
Answer:
A reactive metal has the ability to easily lose an electron and acquire a positive charge. Sodium easily loses electrons and acquires a positive charge. Sodium easily lose electrons than magnesium and get oxidized to easily.
Explanation:
How many moles of potassium are needed to react completely with 7.50 mol of chromium (III) oxide? Show work.
Answer:
45 mol
Explanation:
First you need to balance the equation:
6K + Cr2O3 = 3K2O + 2Cr
the proportion of the coeficients of potassium and chromium oxide is 6 to 1 so we need to multiply 7.5 by 6 to get 45.
True/False. A program is an algorithm that has been coded into something that can be run by a machine. *
Answer:
true
Explanation:
9. Which of the following is a chemical property of water at 4°C? its temperature its state its color
What is the main process by which water moves from land to the atmosphere?
Answer:
isn't that evaporation if not you can just delete my answer-
Explanation:
Why does lithium have a higher ionization energy compared to sodium?
Answer:
There are 11 protons in a sodium atom but only 3 in a lithium atom, so the nuclear charge is much greater. ... The only factor left is the extra distance between the outer electron and the nucleus in sodium's case. That lowers the ionization energy.
what’s the difference between 2o and o(subscript 2)?
Answer:
2O is an atom while O2 Is a molecule
How many oxygen (O) atoms are in a molecule of C3H403?
O A. 1
O B. 10
O c. 4
O D. 3
Answer:
your answer is 3
Explanation:
Answer:
D
Explanation:
"O3" means there are three atoms of that particle element in the substance.
PLEASE ANSWER IF ITS CORRECT I WILL MARK IT AS BRAINLIEST PLZ??
What do you think would happen if the temperature of a gas is higher than the other when applying Graham's Law? *
A) There will be no effect on the gas
B) The kinetic energy of the gas particles would increase
C) The volume of the gas particles would increase
Answer:
There will not be effect on the gas
Explanation:
I'm sure that it's correct answer
find the pH of a 0.79 M solution of NH3,a weak base,if it has a Kb of 4*10 -5
Answer:
Cat
Explanation:
Bcuz I said so that it's a cat
An example of a binary compound is
a.
potassium chloride
b.
ammonium chloride
potassium chlorate
ammonium chlorate
Answer:
a. KCl
Explanation:
a. KCl - made of 2 elements
b. NH4Cl
c. KClO3
d. NH4ClO3
How much KNO3 can be dissolved at 50 C in 100g of water?
Answer:
Initially there is 100 g of potassium nitrate in solution, at 50 °C the solubility is 84 g/100g (original data or graph), so 16 g will have crystallised out
Explanation:
two oxides, X and Y are added seperately to dilute sulfuric acid and dilute sodium hydroxide. X reacts with dilute sulfuric acid but Y does not react. Y reacts with aqueous sodium hydroxide but X does not react. which type of oxide are X and Y ?
Answer:
c
Explanation:
x basic and metallic while y is acidic
The study of chemicals is called chemistry.
The correct answer is B.
The compound which has oxygen in it is called oxide. According to the question, the element is react with the acid and base.
The X only reacts with the acidic compound but not basic compound hence the element X is basic in nature. while Y only reacts with the basic compound, not X, hence the Y element is acidic in nature.
Therefore, the correct answer is B.
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explain the trend in boiling parts of the halogen
Answer:
The boiling point of the halogens increases as you go down the group. The halogens exist as diatomic molecules, with both atoms sharing an electron to completely fill the outer shell. The increase in boiling (and melting point) can be attributed to the increase in intermolecular forces (van der Waals).tion:
what is chemical composition of the atmosphere
Answer:
nitrogen 78%, Oxygen 21%, Argon 0.9%, Carbon dioxide 0.03%, water 0-4%(depends)
Explanation:
Answer:
definition: The atmosphere is composed of a mix of several different gases in differing amounts. The permanent gases whose percentages do not change from day to day are nitrogen, oxygen and argon. Nitrogen accounts for 78% of the atmosphere, oxygen 21% and argon 0.9%.
Explanation:
Nitrogen accounts for 78% of the atmosphere, oxygen 21% and argon 0.9%. Gases like carbon dioxide, nitrous oxides, methane, and ozone are trace gases that account for about a tenth of one percent of the atmosphere.
Layers of the atmosphere:
- From lowest to highest, the major layers are the troposphere, stratosphere, mesosphere, thermosphere and exosphere
6. Which change to a population would cause
increased competition among
its members?
SC.7.L.17.3
ES
an increase in population size
B a decrease in population size
© an increase in predation on the
population
D an increase of disease in the population
Answer:
B
Explanation:
Because I said so
The following equation represents what type of chemical reaction?
2Ag + H2S → Ag2S + H2
A. Double Replacement
B. Single Replacement
C. Decomposition
D. Synthesis
Answer:
single replacement
Explanation: N/A
2) Where is Earth, exactly? Use this image to find our location. Earth is
Located in the
A) Norma arm
B) Outer arm
C) Orion spur.
D) Galactic bar
Answer:
C) Orion spur.
The Orion Arm is a minor spiral arm of the Milky Way Galaxy that is 3,500 light-years across and approximately 10,000 light-years in length, containing the Solar System, including Earth.
1.
what can noble gases be used for?
2.
what is a vertical column called in the periodic table
3.
what is the horizontal column in the periodic table
Answer:
1. They are mostly used to protect materials and prevent chemical reactions.
2.These are Groups
3. I guess it is Rows
A temperature of 37C is equivalent to a temperature of
Answer:
98.6 Degrees Fahrenheit
Explanation:
To convert from Celsius to Fahrenheit, the formula is F=(1.8*C)+32. Since C=37 in this case, our formula is F=(1.8*37)+32. First, solving the work in the parentheses, 1.8*37=66.6. Adding that will get you to 98.6, so F=98.6.
Why can't krypton and xenon separate during the separation of gases in the air?
Answer:
The remaining gas is a mixture of argon, neon, krypton, and xenon. Because these elements are chemically very unreactive, chemical means cannot be used to separate them.
Explanation:
Answer:
They're in Group 0 as they have full outer shells meaning they are chemically unreactive as they already have full outer shells meaning they don't want to lose or gain any electrons. Thus, they can't separate during the separation of gases in the air.
A new element, Thorsonium, has two isotopes. Thorsonium isotopes have a mass of 255 amu and 257 amu. Given the average atomic mass of Thorsonium is 255.65 amu, calculate the percent abundance for each Thorsonium isotope.
Answer:
255 amu has relative abundance 67.5% and 257 has relative abundance 32.5%
Explanation:
Average atomic mass =sum of product of atomic mass and relative abundance all divided by hundred or total abundance
Hydrochloric acid (HCI) breaks down into hydrogen gas and chlorine gas according to the reaction:
2 HCI — Cl2 + H2
If 42 grams of HCl reacts, what is the theoretical yield of hydrogen gas produced?
A) 2.32 g
B) 737 g
C) 0.57 g
D) 1.16 g
Answer:
(D)=1.16g
Explanation:
Answer:
D) 1.16 g
I'm not sure about answer ..
R4te me for 10 points and be honest with me PLEASE
Answer:
id give you and 8 or 9 but you are really pretty tho
Explanation: