Answers
Related Questions
how many moles are 20 grams of Helium ?
Answers
Answer: The correct answer is 5.00 moles
Explanation:
Help please
Lunar eclipses happen when the _____.
moon passes between the Earth and the sun
Earth passes between the sun and the moon
sun passes between the Earth and the moon
Answers
Answer:
mook passes between the earth and sun
Choose the larger atom from each of the following pairs.
a. Between Se and Te, the larger atom is __________
b. Between I and Kr, the larger atom is ________
c. Between P and Pb, the larger atom is _______
d. Between Ge and Br, the larger atom is___________
e. Between G e and B r, the larger atom is _________
1. Se
2. Kr
3. S
4. C
Answers
Answer:
C, between P and Pb, largest atom is Pb
The larger atom from each of the following pairs is as,
a. Between Se and Te, the larger atom is Te .
b. Between I and Kr, the larger atom is I .
c. Between P and Pb, the larger atom is Pb .
d. Between Ge and Br, the larger atom is Ge .
e. Between G e and B r, the larger atom is Ge .
How atomic size of elements vary in periodic table?In periodic table, on moving from top to bottom in a group the atomic size of elements increases while on moving left to right in a period the atomic size of elements decreases.
To learn more about periodic table here.
https://brainly.com/question/11155928
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What is the relationship between radius and diameter
Answers
Answer:
the radius is half the diameter
The radius of a circle is equal to half the diameter.
What is the correct sequence of chemical transformations with the correct phases?
Answers
Answer:
1. Cu(s) 2. Cu(NO3)2 (aq) 3. Cu(OH)2 (s) 4. CuO (s) 5. CuSO4 (aq) 6. Cu(s)
Explanation:
Helpppp me pleaseeee now I’ve been struggling so bad w this
Answers
Answer:
I don't know what the passage says, but I feel like the most logical conclusion is D or the last one.
Explanation:
Answer:
D! Hope this helps! Figured id help with all of ur questions!
Explanation:
Im a wiz at science! ;)
Help me I’m struggling with this one
Answers
Answer:
Eukarya
Explanation:
It's larger than a prokaryotic cell and it has a nucleus.
How many moles of Ag can be obtained from 2.77 moles Cu using the following
balanced reaction?
2AgNO3
+ Cu
Cu(NO3)2
+ 2Ag
Answers
Answer:
2.77×2= 5.4 mol Ag can be obtained
What is the molarity of ZnCl, that forms when 20.0 g of zinc completely reacts with CuCl2, according to the following reaction? Assume a final
volume of 285 mL
Zn(s) + CuCl2(aq) → ZnCl2(aq) + Cu(s)
Answers
If you are given 64.0 grams of CH4, how many grams of H2O are made
Answers
Answer:
144 g of H₂O.
Explanation:
We'll begin by writing the balanced equation for the reaction. This is given below:
CH₄ + 2O₂ —> CO₂ + 2H₂O
Next, we shall determine the mass of CH₄ that reacted and the mass of H₂O produced from the balanced equation. This can be obtained as follow:
Molar mass of CH₄ = 12 + (4×1)
= 12 + 4 = 16 g/mol
Mass of CH₄ from the balanced equation = 1 × 16 = 16 g
Molar mass of H₂O = (2×1) + 16
= 2 + 16 = 18 g/mol
Mass of H₂O from the balanced equation = 2 × 18 = 36 g
SUMMARY:
From the balanced equation above,
16 g of CH₄ reacted to produce 36 g of H₂O.
Finally, we shall determine the mass of H₂O produced by the reaction of 64 g of CH₄. This can be obtained as follow:
From the balanced equation above,
16 g of CH₄ reacted to produce 36 g of H₂O.
Therefore, 64 g of CH₄ will react to produce = (64 × 36)/16 = 144 g of H₂O.
Thus, 144 g of H₂O were obtained from the reaction.
help me please i beg u
Answers
Answer:
none of the above
Explanation:
What part of the food. chain is a pine?
a:primary consumer
b:secondary consumer
c:herbivore
d:producer
Answers
Answer:
producer
Explanation:
Hydrazine (N2H4) and dinitrogen tetroxide (N2O4) form a self-igniting mixture that has been used as a rocket propellant. The reaction products are N2 and H2O. Part A Write a balanced chemical equation for this reaction. Express your answer as a chemical equation. nothing A chemical reaction does not occur for this question. Request Answer Part B What is being oxidized, and what is being reduced
Answers
Answer:
2N₂H₄+N₂O₄→3N₂+4H₂O; N₂H₄ gets oxidized, N₂O₄ gets reduced.
Explanation:
Part AThey tell us what substances react to form what products, so we can write an unbalanced chemical equation from those substances.
N₂H₄+N₂O₄→N₂+H₂O
To balance this equation, we need to make it so there is an even amount of each element on both sides of the reaction. We can do this by multiplying the amount of each substance by adding a coefficient in front of it.
2N₂H₄+N₂O₄→3N₂+4H₂O
Part BTo identify what is being oxidized and what is being reduced, look at the oxidation charges of each element.
N₂H₄ gets oxidized, N₂O₄ gets reduced.
Ellie started her reaction between the KMnO4 and malonic acid by first heating the two solutions in the hot water bath. She then removed the test tubes from the water bath and poured the KMnO4 into the 75-mL test tube containing the malonic acid. She mixed the solution, placed it back into the water bath, then started the timer. For the data collected at 75 oC, indicate how the process explained above impacts the reaction time.a. The time recorded in the lab notebook is the true reaction time because the reaction only starts after the timer is started b. The time recorded in the lab notebook is longer than the true reaction time because the reaction starts the moment the two solutions were mixed c. The time recorded in the lab notebook is the true reaction time because the reaction only starts after the mixture is placed back into the hot water bath d. The time recorded in the lab notebook is shorter than the true reaction time because the reaction starts the moment the two solutions were mixed
Answers
Answer:
The time recorded in the lab notebook is shorter than the true reaction time because the reaction starts the moment the two solutions were mixed
Explanation:
A chemical reaction is "a process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction" (Oxford dictionary).
A chemical reaction begins immediately the reactants are mixed together in a reaction vessel because the particles of the reactants immediately begin to collide with each other. There is no lost time before reactions begins!
This implies that, the time recorded in the lab notebook is shorter than the true reaction time because the reaction starts the moment the two solutions were mixed.
Answer:
the first one is B. and E. and the second is A., B., and D. on edge 2023
Explanation:
Please please help me
Answers
Answer:
I agree with Omar because it depends on what the charge of the object and magnet is. If the magnet is negative and the object is positive, they will pull together. If the magnet is negative and the object is negative then they will pull apart.
Explanation:
What is the percent yield of LiCl if I produced 30.85g LiCl and my theoretical yield was calculated to be 35.40g LiCl?
Answers
Answer:
87.15%
Explanation:
To find percent yield, we can use this simple equation
[tex]\frac{Actual}{Theoretical} *100[/tex]
Where "Actual" is the amount in grams actually collected from the reaction, and "Theoretical" is, well, the theoretical amount that should have been produced.
They give us these values, so to find the percent yield, just plug the numbers in.
[tex]\frac{30.85}{35.40} *100\\\\ =87.15[/tex]
So, the percent yield is 87.15%
An easy trick to remember how to do this is just to divide the smaller number by the bigger number and move the decimal back two places. If you have a percent yield greater than 100%, something is wrong in the reaction.
plz someone help me i dont get this and i need to finish this
Answers
Answer:
The height of A is 900
Explanation: Beside A, there is a number which explains what the height is so the answer is A.
Ecosystems are self-sustaining. They naturally recycle resources without human intervention. Do you think this is true for a pop- bottle biome?
Answers
Answer:
yes. For a pop bottle biome to be self sustaining it needs a water cycle, mineral cycle, solar energy flow, and a balance.
Explanation:
hope this helps
Answer:
I would say no because you have to add water and other recourses for it to grow and work
Explanation:
Predict the shape of the molecule....
Answers
Answer: trigonal bipyramidal
Explanation:
Number of electron pairs = [tex]\frac{1}{2}[V+N-C+A][/tex]
V = number of valence electrons present in central atom
N = number of monovalent atoms bonded to central atom
C = charge of cation
A = charge of anion
[tex]SbCl_5[/tex] :
In the given molecule, antimony is the central atom and there are five chlorine as monovalent atoms.
The number of electron pairs are 5 that means the hybridization will be [tex]sp^3d[/tex] and geometry of the molecule will be trigonal bipyramidal.
How can we find life on other planets?
Answers
Through satellites...
what is elimination reaction
Answers
water
air
multiple cells
a place to live
Answers
plants need to be watered in order to survive
Answer:
I guess it WATER
Part A
Choose the paramagnetic species from below.
O He
O Te
O T14+
O All of the above are paramagnetic.
None of the above is paramagnetic.
Answers
Answer:
o He
Explanation:
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the exact position of the electrons of an atom cannot be determined because they are in constant ___
Answers
i’m pretty sure-
What evidence can be used to explain the type of mutualistic relationship present between the water buffalo and frog?
Answers
Which affects both deep water and surface currents in the ocean? the wind the temperature of the water the Coriolis effect None of the above
Answers
Answer:
the wind and the temperature of water both drive ocean currents
Answer:
B. Write 'T' for true or 'F' for false statements :
1. Publisher works only with document in fixed shapes and sizes.
2. Viewing tools are only for editing purpose.
3. Text box icon is found in Styles group.
4. Publisher does not allow you to add images to your document.
5. Margin guides are blue lines that mark the edges.
What will happen if you heat aliquid to high temperatures?
Answers
Answer:
An increase in the temperature of a liquid causes an increase in the average speed of its molecules. As the temperature of a liquid increases, the molecules move faster thereby increasing the liquid's kinetic energy.
how many moles are in 83 particles of sodium chloride?
Answers
Answer:
there are 1.4201927800478769 moles in 83 particles of sodium chloride. or 1.42 for short.
Explanation:
Photosynthesis in a plant is an example of which characteristic of living things?
1. Reproduction
2. Response to the environment
3. Growth and development
4. Ability to obtain and use energy
Answers
Answer:
4. Ability to obtain and use energyA gas has a volume of 590 mL at a temperature of –55.0°C. What The temperature be if the volume expands to 15L at constant pressure?
Answers
Answer:
5542.37 K
Explanation:
Given that,
Initial volume, V₁ = 590 mL
Initial temperature, T₁ = -55°C = -55 + 273 = 218 K
Final volume, V₂ = 15 L
We need to find the final temperature of the gas. The relation between the volume and the temperature is given by :
[tex]\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}[/tex]
Where
T₂ is final volume of the gas
Put all the values in above relation,
[tex]T_2=\dfrac{V_2T_1}{V_1}\\\\T_2=\dfrac{15\ L\times 218\ K}{590\times 10^{-3}\ L}\\\\T_2=5542.37\ K[/tex]
So, the required temperature is equal to 5542.37 K.