Answer:
See explanation
Explanation:
In every redox process, there is an oxidizing agent (that accepts electrons) and a reducing agent* the looses electrons).
For a moment let us ignore the spectator ions and focus on Fe^2+, Cr2O7^2- and H^+.
Hence,
Reduction half equation;
Cr2O7^2-(aq) + 14H^+(aq) + 6e ---------> 2Cr^+(aq) + 7H2O(l)
Oxidation half equation;
6Fe^2+(aq) --------> 6Fe^3+(aq) + 6e
Overall redox reaction equation;
Cr2O7^2-(aq) + 14H^+(aq) + 6Fe^2+(aq) ------>2Cr^+(aq) + 6Fe^3+(aq)
From here the balanced molecular reaction equation is;
K2Cr2O7(aq) + 6FeSO4(aq) + 7H2SO4(aq) -------> Cr2(SO4)3(aq) + 3Fe2(SO4)3(aq) + K2SO4(aq) + 7H2O(l)
Hydrogen bonding is --
Select one:
a. as strong as a covalent bond.
b. a type of ionic bond.
c. a weak attractive force.
d. a strong attractive force.
container has a volume of 28 L and a temperature of 45 ºC The volume is increased to 34 L. What is the new temperature of the gas
Answer:
386.14 K ( 113.14 ºC)
Explanation:
Initial Volume V1 = 28 L
Initial Temperature T1 = 45 + 273 = 318 K
Final Temperature T2 = ?
Final Volume V2 = 34 L
The relationship between these quantities is given by the charles law equation;
V1 / T1 = V2/ T2
T2 = V2 * T1 / V1
Inserting the values
T2 = 34 * 318 / 28
T2 = 386.14 K
How are a rainforest and a desert different? A desert can be found in more than one climate zone. A desert experiences hot summers and cold winters. A rainforest has a high level of humidity. A rainforest has high average temperatures.
Answer:
A rainforest has a high level of humidity.
Explanation:
A characteristic of the desert biome is aridity, or very dry air. This is the opposite of humidity.
Solid calcium carbonate breaks down into carbon dioxide gas, oxygen gas, and solid calcium, write an equation for described reactions chemistry
Answer:
CaCO₃ ------> CaO + CO₂
Note: The breakdown products of solid calcium carbonate is not carbon dioxide gas, oxygen gas, and solid calcium. Rather, it is calcium oxide and carbon dioxide as shown in the reaction equation above.
Explanation:
Calcium carbonate is a mineral which occurs in nature in rocks as calcite and limestone. It is also the main component of eggshells, snail shells, seashells and pearls. It has the molecular formula CaCO₃.
Calcium carbonate or limestone decomposes into calcium oxide and carbon dioxide when heated and the reaction is used to make quicklime and carbon dioxide gas. The equation of the reaction is given below:
CaCO₃ ------> CaO + CO₂
Calcium oxide, one of the products of The decomposition reaction is known as lime and is an important mineral used for many purposes such as reducing the acidity of soils, in the production of limelight, as well as serving as the main ingredient in cement.
The main use of calcium carbonate is in the construction industry as an ingredient of cement. Calcium carbonate is also an important mineral required by sea organisms for making their shells.
0.074 liters of a 15 M solution need to be diluted so that the new
concentration is 3.40 molar. What should the new volume of the solution
be?
A) 0.17 liters
B) 0.33 liters
C) 2.3 liters
D) 3.2 liters
Answer:
3.2
Explanation:
i caculated give me a 1 star if incorrect
The cubic centimeter, which is often abbreviated as cc or cm3, is a metric unit for
Answer:
Volume
Explanation:
Cubic centimeters are used to measure the space an object takes up, or its volume.
Answer:
Volume
Explanation:
how many formula units make up 36.4 g of magnesium chloride
Which of the following is not a unit of volume?
А. L
B. mL
C.m3
D. cm2
where are chemicals found?
A.) only in liquids
B.) only in air
C.) in solids,liquids, and gases
D.) only in powders
Answer: c
Explanation: pretty sure its c :]
can someone help me with this plz??
Answer:
I dont know at all and that is confusing.
What is the difference between a physical and chemical change? (Use words reactants, products, atoms and molecules.)
Answer:
A physical change, such as a state change or dissolving, does not create a new substance, but a chemical change does. In a chemical reaction, the atoms and molecules that interact with each other are called reactants. In a chemical reaction, the atoms and molecules produced by the reaction are called products.
how many moles react with 11 moles of oxygen
Which statement is true about energy? A. Energy never moves. B. Energy is never destroyed. C. Energy always changes to heat. D. Energy always changes to light.
Answer: energy is never moves
Explanation:
How have animals developed physiological adaptations to survive in colder climates?
does all Newton's laws work together
How many atoms are present in 3.500 mol of NH3? NEED ANSWER ASAP
Which daily task involves a mix of simple and complex technology?
Which property is better explained by the band theory than by the sea-of-electrons model?
Lions and cheetahs prey on wildebeests that graze in the grasslands of the african savanna what likely effect would increased rainfall over several rainy seasons have on the populations of wildebeests lions and cheetahs?
Answer:
All three populations would increase.
Explanation:
how many moles are in 3.01 x 10^22
Answer:
The answer is "5 moles".
Explanation:
Please find the complete question in the attached file.
[tex]\to 3.01 \times (10^{22}) = 0.0499822251 \approx 0.05 \ moles[/tex]
The Layers of the Earth video compared the layers of the earth with what type of
food?
A:Avocado
B:Coconut
C:Hard Boiled Egg
D:Malted Milk Ball
Answer:
C
Explanation:
PLEASE HELP ASAP
What chemical combines with nitrogen dioxide to form nitric acid?
Opg
H
OH
02
03
Answer:
opg
Explanation:
A series of chemical reactions transform Volatile Organic Compounds (VOCs) into substances that combine with nitrogen dioxide to produce PAN (Peroxyacytyl nitrate), yet another element in smog. Nitrogen dioxide in the air also reacts with water vapor to form nitric acid, one of the types of acid in acid rain.
A gas occupies 10.2 liters at 0.60 atm. What is the pressure if the volume becomes 3.0 L?
A molecule, Z, contains two atoms of oxygen, six atoms of hydrogen and three atoms of carbon. What is the formula of Z?
Answer:
C3H6O3
Explanation:
Hydroxyacetone
A leader from Louisiana is claiming that it is necessary to include the effects of tornadoes in his city’s emergency plan for natural disasters. Use data from Map 1, the graphs, and what you know about tornadoes to support his claim.
please answer this now i will give brainliest to first person who got it correct.
and don't answer it if you just gonna write stuff that weren't don't even make since to get the point.
Answer:
i dont know either im sorry
Explanation:
Answer:
Where are the graphs?
Explanation:
2Na(s) + CaCl2(aq) 2NaCl(aq) + Ca(s) is an
example of which type of reaction?
decomposition
synthesis
double replacement
single replacement
Answer:
single replacement
Explanation:
Can someone please help I don’t now which one to put
Answer:
2nd or 3rd dyfudhfkfhxhxhxjxjcjcifid
PLEASE HELP ASP!! ILL MARK U AS BRAINLIEST Two objects have a certain gravitational force between them. What would happen if the mass of one of the objects suddenly increased?
The mass of the other object would increase.
The distance between the objects would increase.
The gravitational force of the objects would remain constant.
The gravitational force between the two objects would increase.
Answer:
The gravitational force between the two objects would increase.
Answer:
The gravitational force between the two objects would increase.
Explanation:
Since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. So as the mass of either object increases, the force of gravitational attraction between them also increases.
Which radioisotope requires long-term storage as the method of disposal, to protect living things from radiation exposure over time?
Pu-239
FR-229
Fe-53
P-32
Answer:pu-239
Explanation:
Pu-239 is regarded as the radioisotope requires long-term storage as the method of disposal, to protect living things from radiation exposure over time
Disposal of radioactive nuclear waste is often regarded as a problem.
The waste sources are:
Nuclear power reactors Bomb-related nuclear materialDisposal of bomb-grade plutonium is often difficult.
The longer lived isotopes are:
Plutonium-239 whose t1/2 is 24,110 years, Plutonium-240 whose t1/2 is 6,540 years, Curium-245 whose t1/2 is 8,500 years. etc.The storage of the longer lived elements is through containment for the next several thousand of years.
The control or management of radioactive waste is a hard, multifaceted procedure.
Learn more from
https://brainly.com/question/10125168
How many bonding electrons are drawn in NH4+1?
Answer:
What is the total number of valence electrons in the Lewis structure of nh4+?
Total valence electrons pairs
Total electron pairs are determined by dividing the number total valence electrons by two. For, NH4+, Total pairs of electrons are 4.
Explanation:
Hope it helps! Correct me if I am wrong :>
Im sure about my answer :>
Can you please mark me as brainlest?