Answers
Answer:
O place them in a flame dissolve them in water o add more particles to the solution.
Related Questions
From the reaction: B2H6 + O2 HBO2 + H2O a. What mass of O2 will be needed to burn 36.1 g of B2H6? b. How many moles of water are produced from 19.2 g of B2H6?
Answers
A. The mass of O₂ needed to burn 36.1 g of B₂H₆ is 123.77 g
B. The number of mole of water, H₂O produced from 19.2 g of B₂H₆ is 1.372 mole
Balanced equationB₂H₆ + 3O₂ —> 2HBO₂ + 2H₂O
Molar mass of B₂H₆ = (2×11) + (1×6) = 28 g/mol
Mass of B₂H₆ from the balanced equation = 1 × 28 = 28 g
Molar mass of O₂ = 2 × 16 = 32 g/mol
Mass of O₂ from the balanced equation = 3 × 32 = 96 g
SUMMARY
From the balanced equation above,
28 g of B₂H₆ required 96 g of O₂
A. How to determine the mass of O₂ neededFrom the balanced equation above,
28 g of B₂H₆ required 96 g of O₂
Therefore
36.1 g of B₂H₆ will require = (36.1 × 96) / 28 = 123.77 g of O₂
Thus, 123.77 g of O₂ is required for the reaction
B. How to determine the mole of water producedWe'll begin by calculating the number of mole of in 19.2 g of B₂H₆. This can be obtained as follow:
Mass of B₂H₆ = 19.2 g Molar mass of B₂H₆ = 28 g/mol Mole of B₂H₆ =?Mole = mass / molar mass
Mole of B₂H₆ = 19.2 / 28
Mole of B₂H₆ = 0.686 mole
Finally, we shall determine the number of mole of water produced. This is illustrated below:
Balanced equationB₂H₆ + 3O₂ —> 2HBO₂ + 2H₂O
From the balanced equation above
1 mole of B₂H₆ reacted to produce 2 moles of H₂O
Therefore, H₂O
0.686 mole of B₂H₆ will react to produce = 0.686 × 2 = 1.372 mole of H₂O
Thus, 1.372 mole of H₂O was obtained from the reaction
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PLS HELP FAST!! 50 POINTS AND BRAINLEYIST FOR WHOEVER ANSWERS THIS FASTEST.
In one to two sentences, describe the characteristics of a high-pressure system.
In one to two sentences, explain what biome comprises most of Antarctica and why the continent is described as being part of this biome.
ALSO, IF YOU COPY, PLEASE REWORD SENTENCES.
Answers
A high pressure system has higher pressure at its center than the areas around it
Scientists that work in Antarctica mostly refer to the majority of the continent as being a cold desert
Explanation:
How does increasing the temperature change the physical properties of an object?
1. Increasing the temperature causes chemical reactions to occur
2. Increasing the temperature changes the kinetic energy of the particles of a material
3. Increasing the temperature causes changes in electric fields
4. Increasing the temperature causes the material to become a new compound
Answers
Increasing the temperature change the physical properties of an object through the following:
Increasing the temperature causes chemical reactions to occur.Increasing the temperature changes the kinetic energy of the particles of a material.Increasing the temperature causes changes in electric fields.What is Temperature?This can be defined as the degree of hotness or coldness of a substance and it influences some physical properties.
The properties affected are listed above which makes options 1,2 and 3 the most appropriate choice.
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For the reaction shown, find the limiting reactant for each of the initial quantities of reactants 4Cr + 3o2 -> 2Cr2O3 d)14.8 mol Cr; 10.3 mol O2
Answers
Answer: O2
Explanation:
The balanced chemical equation is:
4 Cr + 3 O2 ---> 2 Cr2O3
4 mol of Cr reacts with 3 mol of O2 to form 2 mol of Cr2O3
For 14.8 mol of Cr, 11.1 mol of O2 is required
But we have 10.3 mol of O2
So, O2 is the limiting reagent
Help please!
__________ is caused by a bacteria that can be transmitted by a flea bite, contact with an infected person, or via airborne droplets. Symptoms are lymph glands that are swollen and painful ("buboes", red spots that turn black)
A ) Tuberculosis
B ) Syphilis
C ) Botulism
D ) Bubonic Plague
Answers
Answer:
Bubonic plague is the correct answer!!!
Explanation:
mark me brainliest
Answer:
The answer is Bubonic Plague
Ignoring the contributions of wind, a baseball would be expected to travel farther in warm, humid air because: Select one: a. water vapor helps to lift the baseball even higher. b. water vapor sticks to baseballs. c. water vapor is less dense than dry air. d. none of these
Answers
Answer:
water vapor is less dense than dry air
Acid rain can be caused by all of the following except..
Select one:
A. automobile exhaust.
B. coal-burning power plants.
C. earthquakes.
D. volcanic eruptions.
(I’ve come to the conclusion that they all can cause acid rain, so I am at a loss as to which one doesn’t.)
Answers
Answer:
Earthquakes
I might be wrong. Hope this helps
Answer:
earthquake
Explanation:
they all can cause house break and people die dangerous
What is the pOH of a
2.6 x 10-6 M H+ solution?
Answers
Explanation:
pOH=-log(2.6×10^(-6)
we get around 5.59
(using log)
Use the chart below to answer the question.
Answer correctly.
Which species are more closely related?
A) M. furo and F. catus
B) Balenopora and Mustela
C) M. furo and B physalus
D) B. physalus and F. catus
Answers
Answer:
Species M. furo and F. catus
Explanation:
When you look at their family name, both species have -lidae at the end, indicating that they are more closely related.
How many moles of PbCl2 are produced
if 14 moles of AICI3 are consumed?
3Pb(NO3)2 + 2AlCl3
>
3PbCl2 + 2A1(NO3)3
Answers
Answer:21 moles of PbCl2 formed
Calculate the pOH for a solution with a hydroxide ion, (OH-) of concentration of 6.49 X 10-11 M.
Calculate the pH.
Note: the answers should have three significant figures
The pOH is: Blank 1
The pH is: Blank 2
Answers
Answer:
Calculate the pOH for a solution with a hydroxide ion, (OH-) of concentration of 6.49 X 10-11 M.
Calculate the pH.
Note: the answers should have three significant figures
The pOH is: Blank 1
The pH is: Blank 2
Explanation:
how have your thoughts changed about Evolution overtime
Answers
Answer:
monkey see, monkey do
Explanation:
boom :)
Answer:
I think it's a game with me and I will knock out a bit and I hope you are u all the way you can get a little bit of a good time to come over here in a bit of the world
In cells, __________ are proteins that are needed to lower the amount of energy required to start chemical reactions
Answers
Answer: I think it’s enzymes
Explanation:
Suppose you are provided with a 35.83 g sample of potassium chlorate to perform this experiment. What is the mass of potassium chloride you expect to release upon heating?
Answers
For a 35.83 g sample of potassium chlorate, the mass of potassium chloride is mathematically given as
M Kcl=21.62g
What is the mass of potassium chloride you expect to release upon heating?Generally, the equation for the Chemical Reaction is mathematically given as
2KClO_3----->2KCl+2O_2
Therefore
[tex]Mole of KCl=\frac{35.57}{122.55}[/tex]
Mole of KCl=0.29mol
Mass of Kcl=0.29*74.55
Mass of Kcl=21.62g
In conclusion, Mass of Kcl
M Kcl=21.62g
Read more about Chemical Reaction
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Indicate the electron pair geometry and the molecular geometry for each of the six compounds.
Compound Electron pair geometry Molecular geometry
BeCl
2
linear
linear
SO
3
trigonal planar
trigonal planar
SO
2
trigonal planar
bent
SiCl
4
PF
3
SCl
2
Answers
2 is the correct answer
1s22s22p63s23p3
what element does this represent
Answers
Answer:
Its phosphorus (P)
Explanation:
In writing the electron configuration for Phosphorus the first two electrons will go in the 1s orbital. Since 1s can only hold two electrons the next 2 electrons for Phosphorous go in the 2s orbital. The next six electrons will go in the 2p orbital. The p orbital can hold up to six electrons. We'll put six in the 2p orbital and then put the next two electrons in the 3s. Since the 3s if now full we'll move to the 3p where we'll place the remaining three electrons. Therefore the Phosphorus electron configuration will be 1s22s22p63s23p3.
How many moles of sodium hydrogen carbonate are present in 2.61 grams of this compound?
Answers
Molar mass of NaHCO_3
23+1+12+3(16)36+4884g/molNow
[tex]\\ \sf\longrightarrow No\:of\:moles=\dfrac{Given\:mass}{Molar\:mass}[/tex]
[tex]\\ \sf\longrightarrow No\:of\; moles=\dfrac{2.61}{84}[/tex]
[tex]\\ \sf\longrightarrow No\:of\:moles=0.0312mol[/tex]
How many people were considered undernourished in Latin America and the Caribbean in 2018?
Question 4 options:
513.9 million
2.6 million
821.6 million
42.5 million
Answers
If the pH is 6.1,what is the concentration of H^+?
Answers
Hi!
[tex]\\ \sf\rightarrow pH=-log[H^+][/tex]
[tex]\\ \sf\rightarrow -log[H^+]=6.1[/tex]
[tex]\\ \sf\rightarrow log[H^+]=-6.1[/tex]
[tex]\\ \sf\rightarrow [H^+]=10^{-6.1}[/tex]
[tex]\\ \sf\rightarrow [H^+]=7.94M[/tex]
Which of the following molecules contains a covalent bond?
Answers
Answer:
m
Explanation:
Answer:
CN is your answer.
Explanation:
Hope this helps!!!
Which of the following is a nonmetal?
A.
potassium (K)
B.
aluminum (Al)
C.
calcium (Ca)
D.
chlorine (Cl)
Answers
Chlorine is a nonmetal. Chlorine is a halogen in family VIIA, which is on the right side of the metalloids on the periodic table.
Predict the organic product or products for the reaction shown.
Answers
The organic product for the reaction given in the image is:
"Quaternary ammonium hydroxide". This process is referred to as Hofmann's elimination.
What is Hofmann's elimination?
The chemical process of creating tertiary amines and alkenes using the treatment of quaternary ammonium with excess methyl iodide, that is, (CH₃)₂ NH, as well as...
the treatment of the resulting compound with a mixture of heat, silver oxide (that is Ag₂O (aq)), and water is what is referred to as Hoffmann's Elimination process.
Learn more about Hoffmann's Elimination Process at:
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How do i solve this?
Draw the product of this reaction. Ignore inorganic byproducts.
Answers
The compound is formed by addition reaction. The product is showed in the image attached.
Addition reactionThe term addition reaction refers to a type of reaction in which a compound is added across the multiple bond. In this case, the iodine molecule is added to the olefinic bond as shown.
The structure of the product formed has been attached to this answer. The product is formed by addition across the double bond.
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based on the electron configuration of the two atoms predict the ratio of metal cationic (+) atom to nonmetal anionic (-) atom in the compound. hydrogen and fluorine
Answers
The metal cationic (+) atom to nonmetal anionic (-) atom ratio in the compound formed between hydrogen and fluorine is 1:1.
What is a compound?A compound is madeup of two or more atoms that are chemically combined together. In this case, we have the atoms; hydrogen and fluorine.
The electronic configuration of the atoms are not shown here but the metal cationic (+) atom to nonmetal anionic (-) atom ratio in the compound formed between hydrogen and fluorine is 1:1.
Learn more about chemical compound: https://brainly.com/question/12166462
How many grams of Na2S will be produced if you react 35.0g sodium
Answers
Granite is part of the crust layer of the earth.
True
False
Answers
Answer:
That would be True
Explanation:
granite is a part of the crust layer.
Calculating Moles of Particles
QUICK CHECK
How many moles of particles are formed by dissolving one mole of each of the following in water?
Ethanol
CaCl2
5 X = 1 mole(s) of particles
25 X = 3 mole(s) of particles
COMPLETE
COMPLETE
(NH4)2SO4
Sucrose
mole(s) of particles
3 X = 1 mole(s) of particles
DONE
COMPLETE
Na2HPO4
mole(s) of particles
3
Answers
Answer:
check the picture down below
Explanation:
Calculate the number of moles in 625mL of a 3.0 M NaOH solution
Answers
0.625 L times 3 mol/L = 1.875 mol
How many kilojoules are required to melt 15 g of ice at 0 degrees C, and raise the temperature of the liquid that forms to 85 degrees C?
Answers
Answer:
10026 joules
Explanation:
its right.
An alternating current can be described as one in which:
A. Electrons flow in both directions in the circuit.
B. Electrons flow in only one direction in the circuit
C. Electrons move only from the negative terminal of the battery.
D. Electrons move only from the positive terminal of the battery.
Answers
A
Explanation:
electrons flow in both directions
Answer: A I know it but I forgot how to explain it.