Answer:
Proximity to water bed/water sourceGeographical isolation and barriersunavailability of plant or any biosystemExplanation:
A nuclear repository would be required to be isolated with barriers in place to keep people out. Ideally, it should be stored underground and away from any underlying waterways, or biosystems so as to avoid contamination. A good example would be the proposed Yucca Mountain repository.
I hope this was helpful and useful.
The radioactive substance has a lot of distinction and variation and needs to be kept aside from the environment and it of reach for most nuclear power plants to discharge the gases.
There is various consideration that needs to keep in mind such as the size of the container, temperature of the gas, and amount of gas in the container. Other considerations include the closeness to water bed/water source, the locational isolation, and barriers , unavailability of plant or any biosystem in case of the nuclear wastes.Learn more about the characteristics that would be taken into consideration.
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Which reaction is the opposite of a decomposition reaction?
Question 3 options:
Electrolysis of Water
Synthesis
Combustion
Explosion
Answer:
B) Synthesis reaction
Explanation:
synthesis reactions because they take apart larger molecules or compounds
Hope that helps
If 8.50 g of phosphorus reacts with hydrogen gas at 2.00 atm in a 10.0-L container at 298 K, calculate the moles of PH3 produced as well as the total number of moles of gas present at the conclusion of the reaction.
Answer:
The moles of PH₃ produced are 0.2742 and the total number of moles of gas present at the end of the reaction is 0.6809.
Explanation:
Phosphorus reacts with H₂ according to the balanced equation:
P₄ (s) + 6 H₂ (g) ⇒ 4 PH₃ (g)
By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of each compound participate in the reaction:
P₄: 1 moleH₂: 6 molesPH₃:4 molesBeing the molar mass of the compounds:
P₄: 124 g/moleH₂: 2 g/molePH₃: 34 g/moleThe following mass amounts of each compound participate in the reaction:
P₄: 1 mole* 124 g/mole= 124 gH₂: 6 mole* 2 g/mole= 12 gPH₃: 4 moles* 34 g/mole= 136 gAn ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases:
P * V = n * R * T
In this case you know:
P= 2 atmV= 10 Ln= ?R= 0.082 [tex]\frac{atm*L}{mol*K}[/tex]T= 298 KReplacing:
2 atm*10 L= n*0.082 [tex]\frac{atm*L}{mol*K}[/tex] *298 K
and solving you get:
[tex]n=\frac{2 atm*10 L}{0.082\frac{atm*L}{mol*K}*298 K }[/tex]
n=0.818 moles
The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.
To determine the limiting reagent, you can use a simple rule of three as follows: if 6 moles of H₂ react with 124 g of P₄, 0.818 moles of H₂ with how much mass of P₄ will it react?
[tex]mass of P_{4}=\frac{0.818 moles of H_{2}*124 grams of P_{4}}{6 moles of H_{2}}[/tex]
mass of P₄= 16.90 grams
But 16.90 grams of P₄ are not available, 8.50 grams are available. Since you have less mass than you need to react with 0.818 moles of H₂, phosphorus P₄ will be the limiting reagent.
Then you can apply the following rules of three:
If 124 grams of P₄ produce 4 moles of PH₃, 8.50 grams of P₄, how many moles do they produce?[tex]moles of PH_{3} =\frac{8.5 grams of P_{4}*4 moles of PH_{3} }{124grams of P_{4}}[/tex]
moles of PH₃=0.2742
If 124 grams of P₄ react with 6 moles of H₂, 8.50 grams of P₄ with how many moles of H₂ do they react?[tex]moles of H_{2} =\frac{8.5 grams of P_{4}*6 moles of H_{2} }{124grams of P_{4}}[/tex]
moles of H₂= 0.4113
If you have 0.818 moles of H₂, the number of moles of gas H₂ present at the end of the reaction is calculated as:
0.818 - 0.4113= 0.4067
Then the total number of moles of gas present at the end of the reaction will be the sum of the moles of PH₃ gas and H₂ gas that did not react:
0.2742 + 0.4067= 0.6809
Finally, the moles of PH₃ produced are 0.2742 and the total number of moles of gas present at the end of the reaction is 0.6809.
The ideal gas equation gives the approximate amount of PH₃ produced
and the gas at the conclusion as 0.28 and 0.69 moles respectively.
Response:
First part:
The PH₃ gas produced is approximately 0.28 molesSecond part:
The number of moles of gas present at the conclusion of the reaction is approximately 0.69 molesWhat is the ideal gas equation, and how does it give the number of moles of gas present?Given:
Mass of phosphorus = 8.50 g
Pressure of hydrogen gas, P = 2.00 atm
Volume of hydrogen gas, V = 10.0–L
Temperature of the gas, T = 298 K
First part:
From the ideal gas equation, P·V = n·R·T, we have;
[tex]Number \ of \ moles, \ n = \mathbf{\dfrac{P\cdot V}{R \cdot T}}[/tex]
Where for the hydrogen gas, H₂, we have;
P = 2.00 atm
V = 10.0 L
T = 298 K
The universal gas constant, R = 0.08205 L·atm·mol⁻¹·K⁻¹
Which gives;
[tex]n = \mathbf{ \dfrac{2.00 \times 10.0}{0.08205 \times 298}} \approx 0.82[/tex]
The number of moles of H₂ in the reaction, n ≈ 0.82 moles
The equation of the reaction is; P₄(s) + 6H₂(g) [tex]\longrightarrow[/tex] 4PH₃(g)Therefore;
1 mole of P₄(s) and 6 moles of H₂(g) produces 4 moles of PH₃(g)
Molar mass of P₄ ≈ 123.9 g
Which gives;
Number of moles in 8.50 g of phosphorus = [tex]\frac{8.5}{123.9}[/tex] ≈ 0.069
0.069 moles of P₄ will react with 0.069 × 6 moles ≈ 0.41 moles of H₂ to produce 0.069 × 4 moles ≈ 0.28 moles of PH₃
Number of moles of PH₃ gas produced is approximately 0.28 molesSecond part:
The total number of moles of gas present at the conclusion of the reaction is therefore;
∑Gas ≈ 0.28 moles + (0.82 - 0.41) moles ≈ 0.69 molesLearn more about the ideal gas equation here:
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Queston
Which equation shows how to calculate how many grams (g) of KOH would
be needed to fully react with 4 mol Mg(OH)2? The balanced reaction is:
MgCl2 + 2KOH → Mg(OH)2 + 2KCI
OA. mol Mg(OH),
2 mol KOH
mol Mg(0H),
56.10 g KOH
1 mol KOH
2 mol KOH
1 mol Mg Cl,
56.10 g KOH
1mol KOH
OB. mol Mgch
1
1mol Mg(OH),
2 mol KOH
1mol Ma(0H),
56.10 g KOH
1 molkOH
mol Mg (OH,
1 mol KOH
2 mol Ma(OH)
56 10 g KOH
1mol KOH
OD.
Answer:
C
Explanation:
We know that the molar mass of KOH is 56 gmol-1
Molar mass of Mg(OH)2 is 58.31 g/mol
Now; the balanced reaction equation is; MgCl2 + 2KOH → Mg(OH)2 + 2KCI
Hence;
2 moles of KOH yields 1 mole of Mg(OH)2
4 moles of KOH yields;
4 moles of KOH/1 mol * 1 mole Mg(OH)2 /2 moles KOH * 58.31 g Mg(OH)2 / 1 mole Mg(OH)2
So option c is correct
Answer:
4mol MG(OH)2/1 * 2mol KOH/1 mol MG(OH2) * 56.10g KOH/1 mol KOH
Explanation:
Took the test
2 Ag20 →4 Ag + O2 what reaction is this
Answer:
Decomposition
Explanation:
hope it helps you
The compound ammonium phosphate is a strong electrolyte. Write the transformation that occurs when solid ammonium phosphate dissolves in water.
Answer:
(NH₄)₂SO₄(s) ---> 2NH₄⁺(aq) + SO₄⁻²(aq)
Explanation:
The compound ammonium phosphate is a strong electrolyte. - This means that ammonium phosphate fully ionizes - dissociates to positive and negative ions completely.
The ions formed when ammonium phosphate dissociates are; Ammonium ion NH₄⁺ and sulphate ion SO₄⁻²
The transformation is given in the equation;
(NH₄)₂SO₄ ---> NH₄⁺ + SO₄⁻²
Upon balancing;
(NH₄)₂SO₄(s) ---> 2NH₄⁺(aq) + SO₄⁻²(aq)
What does the chemical formula CaCl, show about the compound it represents? It is made up of one element. It is made up of two elements. It is made up of three elements. It is made up of four elements.
Answer:
It is made up of two elements.
Explanation:
To answer the question given above,
We shall determine the number of elements present in CaCl₂. This can be obtained as follow:
CaCl₂ contains calcium (Ca) and chlorine gas (Cl₂).
This implies that CaCl₂ contains two different elements.
Now, considering the options given in the question above, CaCl₂ is made up of two elements.
Ti(SO4)2 chemical compound?
Answer:
Titanium(IV) Sulfide
Explanation:
Which of the following is NOT a part of a circuit? source pathway current load
Answer:
Pathway
Explanation:
Pathways and Circuits are different things, so it can't be part of it.
Name the similarities between a animal cell and a plant cell
Answer:
Structurally, plant and animal cells are very similar because they are both eukaryotic cells. They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, golgi apparatus, lysosomes, and peroxisomes. Both also contain similar membranes, cytosol, and cytoskeletal elements.
Explanation:
I hope it's help
What is the name of the compound whose formula is Re2O
Answer:
im not myself with nitro gone
Explanation:
In a chemical formula, the number of each type of atom in the compound is shown by numbers called what?
Answer: Subscripts
Explanation: Those are the little numbers next to each atom in a chemical formula.
What is one way in which sound and light are alike? PLEASE HELP IF YOU WANT BRAINLEIST AND TO HAVE YOUR COMMENT LIKED!!
A. They both travel easily through wood.
B. They are both types of energy.
C. both can travel through outer space.
D. They both make it easier for you to see what you are doing.
Answer:
They are both types of energy.
Explanation:
The last 2 are true for light, and the first one is true for sound.
Hope this is right, sorry if it is not.
which of the following statements are part of the kinetic molecular theory ?
Answer: The average kinetic energy is proportional to the absolute temperature of the gas. Gas particles are in random motion. Gas particles have no volume. And the collisions between gas particles are elastic.
Explanation: I heard this question before, I think. Hope this helps!
How do you know a substance has dissolved?
it might look like it has disappeared, but in fact it has just mixed with the water to make a transparent
The mass % of Ca in CaSO4 is 29.45%. To calculate the mass of Ca present in a 25.6-g sample of this compound, the correct procedure is given by _____.
Answer:
The correct answer is - 29.45 / 100 x 25.6 = 7.5392 grams
Explanation:
It is given in the question that in 100 gms of CaSO4 there are 29.45 grams of Ca present and there is 25.6 gram of total CaSO4 sample present, So, to calculate the exact value of calcium in this given sample is:
mass of Ca = total amount of sample*percentage of calcium in sample /100
M of Ca =25.6*29.45/100
M of Ca = 7.5392 grams
Thus, the correct procedure is given by 29.45 / 100 x 25.6 = 7.5392 grams
PLEASE HELP FREE BRAINLIEST DUE AT 1:40 PM EST
A block with a volume of 20 cm3 has a density of 5 g/cm3. The block is cut into two pieces. One piece has a volume of 15 cm3, and the other piece has a volume of 5 cm3. What are the densities of the two pieces?
Answer:
wouldnt they still have the same density?
Explanation:
for example, the density of iron is 7.874 g/cm^3 no matter how big the piece is. I hope this helps.
9. Which of these is not a mixture? *
Solution
Alloy
Amalgam
They are all mixtures.
Answer:
They are all mixture
Explanation:
last option
How does a magnet separate mixtures like sand and iron filings?
Answer:
because iron is magnetic and sand is not
Explanation:
Question 4
Being Left Handed is a recessive trait so it would be represented by two lowercase letters like (hh)
Your answer:
O
True
False
Answer:
True
Explanation:
Which metal will lose electrons more easily, Ca or Mg?
g Suppose a 49. L reaction vessel is filled with 1.5 mol of NO. What can you say about the composition of the mixture in the vessel at equilibrium
The question is incomplete, the complete question is:
At a certain temperature, the equilibrium constant [tex]K_{eq}[/tex] for the following reaction is 0.74:
[tex]NO_3(g)+NO(g)\rightleftharpoons 2NO_2(g)[/tex]
Suppose a 49.0 L reaction vessel is filled with 1.5 mol of [tex]NO_3[/tex] and 1.5 mol of NO. What can you say about the composition of the mixture in the vessel at equilibrium?
A. There will be very little [tex]NO_3[/tex] and NO.
B. There will be very little [tex]NO_2[/tex]
C. Neither of the above is true.
Answer: The correct option is B. there will be very little [tex]NO_2[/tex]
Explanation:
We are given:
Initial moles of [tex]NO_3[/tex] = 1.5 moles
Initial moles of NO = 1.5 moles
Volume of vessel = 49 L
As, moles of reactants and moles of products are equal, the volume term will not appear in the equilibrium constant expression.
Equilibrium constant for the reaction = 0.74
For the given chemical equation:
[tex]NO_3(g)+NO(g)\rightleftharpoons 2NO_2(g)[/tex]
Initial: 1.5 1.5 -
At eqllm: 1.5-x 1.5-x 2x
The expression of equilibrium constant for the above reaction:
[tex]K_{eq}=\frac{[NO_2]^2}{[NO_3]\times [NO]}[/tex]
Putting values in above equation, we get:
[tex]0.74=\frac{(2x)^2}{(1.5-x)(1.5-x)}\\\\x=-1.13, 0.451[/tex]
Neglecting the negative value of equilibrium constant because concentration cannot be negative
Equilibrium concentration of [tex]NO_3[/tex] = (1.5 - x) = (1.5 - 0.451) = 1.049 moles
Equilibrium concentration of NO = (1.5 - x) = (1.5 - 0.451) = 1.049 moles
Equilibrium concentration of [tex]NO_2[/tex] = 2x = [tex](2\times 0.451)=0.902mol[/tex]
There are 3 possibilities:
If [tex]K_{eq}<1[/tex], the reaction is reactant favoredIf [tex]K_{eq}>1[/tex], the reaction is product favored.If [tex]K_{eq}=1[/tex], the reaction is in equilibrium.Here, the value of [tex]K_{eq}=0.74[/tex], which is less than 1, therefore the reaction is reactant favored and we can say that there will be very little [tex]NO_2[/tex].
Hence, the correct option is B. there will be very little [tex]NO_2[/tex]
How do you know whether or not a chemical
reaction equation follows the law of
conservation of mass?
Answer:
- Because it has or not the same number of atoms at each side.
- Because the mass of reactants and product is or not the same after the reaction.
Explanation:
Hello!
In this case, since the law of conservation of mass states that matter cannot be created nor destroyed; when we see a chemical reaction, we need to make sure that the amount of atoms is the same at both reactants and products; for instance the formation of water requires four hydrogen atoms and two oxygen atoms at both reactants and products sides as shown below:
[tex]2H_2+O_2\rightarrow 2H_2O[/tex]
Another way is by proving that the total mass of products equals the total mass of reactants once the reaction has gone to completion.
Best regards!
write an equation illustrating the condensation of p-diaminobenzene with the acid chloride of oxalic acid (cocl)2
Answer:
Explanation:
p-diaminobenzene is popularly known as p-phenylenediamine. It undergoes a condensation reaction with metal halides. As a white solid (p-diaminobenzene), it can be darkened by air oxidation. The reaction showing the condensation of p-phenylenediamine with (CoCl)₂ can be seen in the image attached below.
Which organisms are producers? (SELECT ALL THAT APPLY.)
grass
bear
human
oak tree
fungus
Answer:
Grass
Oak tree
Explanation:
Bear and human are definitely not and fungus are decomposers.
Draw both the chair and boat conformation of 1,4-dimethylcyclohexane with the methyl groups as cis and trans for both conformations. Label your molecules for cis and trans. Tell which is the highest in energy.
Answer:
Boat conformation cis 1,4-dimethyl cyclohexane has the highest energy.
Explanation:
From the conformations, the boat conformation cis 1,4-dimethyl cyclohexane is least stable due to the fact that two methyl groups are located in opposite direction to each other, this leads to the production of a higher strain. Similarly, Chair conformations appear more stable than boat conformation. Hence, energy is inversely proportional to stability. As a result of the aforementioned, boat conformation cis 1,4-dimethyl cyclohexane has the highest energy.
Can someone put these together????
Answer:
ans is 1 to 4 , 2 to 2, 3to 5, 4to 1, 5to 3
this is ans
the presidential inauguration is free to watch with or without paying ror traditional tv service. Why is this important?
Answer:
so that people would be able to witness the inauguration of a president, since a president is an important part of a country.
Explanation:
What does it mean to be an invertebrate?
invertebrate is a animal that does not have a back bone but may have a exoskeleton examples could be earthworm, jellyfish, snail and a spider because it has a exoskeleton a hard outer shell hope this helps
Vertebrates have a back bone like sea turtles , fish ,foxes and humans.
100 grams of calcium were dropped into 100 grams of water. How many grams of calcium hydroxide would be produced?
Answer:
100
Explanation:
What is the number of electrons in an atom that has 26 protons and 30 neutrons?
Answer:
26
Explanation:
The number of electrons and protons are equal.