Answer:
Hydrolic Acid
Explanation:
The compound A is propanone which gives 2 -hydroxy- 2 methyl propane nitrile. This upon hydrolysis in acidic medium gives 2 hydroxy butanoic acid. Propanone when treated with trichloromethane gives the compound chloretone.
What is propanone?Propanone is an organic compound in the classification of ketones. Ketones are compounds with the general formula of R- CO- R. The skeleton of propanone is CH₃ - CO - CH₃.
The reaction of ketones with Zn - amalgam in HCl gives corresponding alkanes . Hence, compound A is propanone. Propanone on reaction with HCN gives 2 -hydroxy- 2 methyl propanenitrile this is B.
B on hydrolysis converts the CN groups to the acidic group COOH. Hence, 2 -hydroxy- 2 methyl propanenitrile converts to 2 -hydroxy- butanoic acid, that is C. Propanone on reaction with trichloromethane CHCl₃ gives chloretone.
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3.0 moles of BaO are mixed evenly into a 2.0 L. What is the molarity of this
solution?
Answer: 1.5 moles/L
Explanation:
Molarity = moles/ Liters
to find the molarity of BaO: 3moles/2L = 1.5 moles/L
2CO + O2 --> 2CO2
How many liters of carbon dioxide are produced from 10L of carbon monoxide?
Answer:
10 L of CO₂.
Explanation:
The balanced equation for the reaction is given below:
2CO + O₂ —> 2CO₂
From the balanced equation above,
2 L of CO reacted to produce 2 L of CO₂.
Finally, we shall determine the volume of CO₂ produced by the reaction of 10 L CO. This can be obtained as follow:
From the balanced equation above,
2 L of CO reacted to produce 2 L of CO₂.
Therefore, 10 L of CO will also react to produce 10 L of CO₂.
Thus, 10 L of CO₂ were obtained from the reaction.
10L of carbon dioxide will be produced from 10L of carbon monoxide.
According to this question, carbon monoxide reacts with oxygen gas to form carbon dioxide according to the following reaction:2CO + O2 → 2CO22 moles of carbon monoxide produces 2 moles of carbon dioxideTherefore, 10 litres of carbon monoxide (CO) will produce 10 × 2 = 20/2 = 10L of carbon dioxide (CO2).Learn more at: https://brainly.com/question/2040396?referrer=searchResults
16. Which is an example of a transverse wave? (1 point)
Answer:
Transverse wave,Explanation:
motion in which all points on a wave oscillate along paths at right angles to the direction of the wave's advance. Surface ripples on water, seismic S (secondary) waves, and electromagnetic (e.g., radio and light) waves are examples of transverse waves.Answer:
A WAVE CARRIED THROUGH A ROPE
Explanation:
I chose a wave on water and got it WRONG
what part of the brain helps us process sounds?
Answer:
Temporal lobes
Explanation: They are right above the ears...And they help us process sounds...They are also important for learning and memory, as well as the understanding of language
Identify this reaction
HBr+ Al(OH)3 —-> H2O + AlBr3
Neutralization reaction
Hello, in the following reaction HBr is strong acid when reacts with Amphoteric Aluminium hydroxide gives water & AlBr3 as salt.
We know that in neutralization reaction
acid & bases reacts to give salt and water. Hence following reaction is neutralization reaction.
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A teacher sprinkles some iron shavings on a clear tray . She places two magnets in the shavings with the north ends facing each other . Based on the cause-and-effect relationship between the magnets, which phenomenon is the teacher modeling for her students ?
Answer:
Field of repulsion.
Explanation:
An experiment can be defined as an investigation which typically involves the process of manipulating an independent variable (the cause) in order to be able to determine or measure the dependent variable (the effect).
This ultimately implies that, an experiment can be used by scientists to show or demonstrate how a condition causes or gives rise to another i.e cause and effect, influence, behavior, etc in a sample.
Cause and effect can be defined as the relationship between two things or events in which an occurrence one (cause) leads to the occurrence of another (effect).
In this scenario, a teacher sprinkles some iron shavings on a clear tray. She places two magnets in the shavings with the north ends facing each other. Based on the cause-and-effect relationship between the magnets, the phenomenon the teacher is modeling for her students is field of repulsion.
Generally, the two north ends of a magnet have the same polarities and as such are considered to be like charges.
Hence, the field of repulsion is a phenomenon that is based on the fact that like charges repel while unlike charges attract. Thus, the north end of a magnet would repel the north end of another magnet placed beside it.
is a lab formed emerald a mineral? why or why not?
they dont have geology subject so
Answer:
No, it is not a mineral
Explanation:
Emerald is an important gemstone. It is famous for its green colour. Emerald is one of the most valuable gemstones. It is very much useful in the production of jewelry.
Emerald can be created in the laboratory. Such laboratory created emerald are still regarded as real emerald but they are not minerals. Only naturally occurring emeralds are minerals.
has 2 valence electrons. It has electron shells and is reactive than Boron. This element has the same number of electron shells as has 4 valence electrons. It has electron shells and is reactive than Aluminum. This element has the same number of electron shells as
Answer:
Beryllium.
Silicon.
Explanation:
Beryllium has 2 electrons in their outermost shell and has highly reactive than boron because Boron needs 3 electrons to lose whereas, beryllium needs to lose only 2 electrons to get stability. Silicon has 4 electrons in its outermost shell and is less reactive than aluminum because aluminum has to lose 3 electrons to get stability as compared to silicon which needs 4 electrons to lose to be stable and non-reactive.
Calculate the percentage of water for each of the hydrates listed:
a. MgSO4 ● 7H2O
b. LiC2H3O2 ● 2H2O
c. Al(NO3)3 ● 9H2O
Answer:
Mass ratio:
a. Approximately [tex]51.2\%[/tex].
b. Approximately [tex]35.3\%[/tex].
c. Approximately [tex]43.2\%[/tex].
Explanation:
Look up the relative atomic mass of each element on a modern periodic table:
[tex]\rm Mg[/tex]: [tex]24.305[/tex].[tex]\rm S[/tex]: [tex]32.06[/tex].[tex]\rm O[/tex]: [tex]15.999[/tex].[tex]\rm H[/tex]: [tex]1.008[/tex].[tex]\rm Li[/tex]: [tex]6.94[/tex].[tex]\rm C[/tex]: [tex]12.011[/tex].[tex]\rm Al[/tex]: [tex]26.982[/tex].[tex]\rm N[/tex]: [tex]14.007[/tex].For example, the relative atomic mass of [tex]\rm Al[/tex] is [tex]26.982[/tex]. Hence, the mass of one mole of [tex]\rm Al\![/tex] atoms would be (approximately) [tex]26.982\; \rm g[/tex].
Calculate the formula mass of [tex]\rm H_2O[/tex]:
[tex]\begin{aligned} & M({\rm H_2O}) \\ &= 2 \times 1.008 + 15.999 \\ &= 18.015\; \rm g \cdot mol^{-1}\end{aligned}[/tex].
Calculate the formula mass for each of the hydrates:
[tex]\begin{aligned}& M({\rm MgSO_4 \cdot {7\, H_2O}}) \\ &= 24.305 + 32.06 + 4 \times 15.999 \\ & \quad\quad + 7 \times (2 \times 1.008 + 15.999) \\ &= 246.466\; \rm g \cdot mol^{-1}\end{aligned}[/tex].
[tex]\begin{aligned}& M({\rm LiC_2H_3O_2 \cdot {2\, H_2O}}) \\ &= 6.94 + 2 \times 12.011 + 3 \times 1.008 + 2 \times 15.999 \\ & \quad\quad + 2 \times (2 \times 1.008 + 15.999) \\ &= 102.014\; \rm g \cdot mol^{-1}\end{aligned}[/tex].
[tex]\begin{aligned}& M({\rm Al(NO_3)_3 \cdot {9\, H_2O}}) \\ &= 26.982 + 3 \times (14.007 + 3 \time 15.999) \\ &\quad \quad + 9 \times (2 \times 1.008 + 15.999) \\ &= 375.129\; \rm g \cdot mol^{-1}\end{aligned}[/tex].
The mass of [tex]1\; \rm mol[/tex] of [tex]{\rm MgSO_4 \cdot {7\, H_2O}}[/tex] formula units is [tex]246.466\; \rm g[/tex].
There are seven mole of [tex]\rm H_2O[/tex] formula units in that many [tex]{\rm MgSO_4 \cdot {7\, H_2O}}[/tex] formula units. The mass of that [tex]7\; \rm mol[/tex] of [tex]\rm H_2O\![/tex] formula units would be [tex]7 \; \rm mol \times 18.015\; \rm g \cdot mol^{-1} = 127.105\; \rm g[/tex].
Hence, the percentage mass of [tex]\rm H_2O[/tex] in [tex]{\rm MgSO_4 \cdot {7\, H_2O}}[/tex] would be:
[tex]\begin{aligned}\frac{127.015\; \rm g}{246.466\; \rm g} \approx 51.2\%\end{aligned}[/tex].
Similarly:
Mass of [tex]1\;\rm mol[/tex] of [tex]\rm LiC_2H_3O_2 \cdot {2\, H_2O}[/tex] formula units: [tex]102.014\; \rm g[/tex].Mass of the [tex]2\; \rm mol[/tex] of [tex]\rm H_2O[/tex] in that [tex]1\;\rm mol[/tex] of [tex]\rm LiC_2H_3O_2 \cdot {2\, H_2O}[/tex] formula units: [tex]2 \; \rm mol \times 18.015\; \rm g \cdot mol^{-1} = 36.030\; \rm g[/tex].Percentage mass of [tex]\rm H_2O[/tex] in [tex]\rm LiC_2H_3O_2 \cdot {2\, H_2O}[/tex]: [tex]\begin{aligned}\frac{36.030\; \rm g}{102.014\; \rm g} \approx 35.3\%\end{aligned}[/tex].Mass of [tex]1\;\rm mol[/tex] of [tex]\rm Al(NO_3)_3 \cdot {9\, H_2O}[/tex] formula units: [tex]375.129\; \rm g[/tex].Mass of the [tex]9\; \rm mol[/tex] of [tex]\rm H_2O[/tex] in that [tex]1\;\rm mol[/tex] of [tex]\rm Al(NO_3)_3 \cdot {9\, H_2O}[/tex] formula units: [tex]9 \; \rm mol \times 18.015\; \rm g \cdot mol^{-1} = 162.135\; \rm g[/tex].Percentage mass of [tex]\rm H_2O[/tex] in [tex]\rm Al(NO_3)_3 \cdot {9\, H_2O}[/tex]: [tex]\begin{aligned}\frac{162.135\; \rm g}{375.129\; \rm g} \approx 43.2\%\end{aligned}[/tex].Which of these models shows the position of the sun moon and Earth that will have the LARGEST effect on the tides? _________
Answer: Your answer is J
Explanation: This can occur when moon is closest to earth.
So the moon in between earth and sun.
Also factually the moon can effect human behavior, because humans are made up of some percent of water.
which of the following is not an essential element for healthy plant growth?
a. oxygen
b. nitrogen
c. potassium
d. phosphorus
Answer:
A oxygen
Explanation:
For plant growth nitrogen, potassium and phosphorous are the three main elements needed. oxygen is expelled from plants. Plants doesn't need oxygen
CAN SOMEBODY PLS HELP...
Answer:
Maybe you could do something with nuclear power plants and how we use those to create electrical energy for our phones, houses etc?
How many moles of hydrogen are produced from the reaction of 50.0 g of Mg and the equivalent of 75 g of HCl?
Answer:
1.03 mol of dihydrogen gas will evolve, with a volume slightly over
22.4 [tex]dm^{3}[/tex] at STP.
Explanation:
Find the molar mass of PCI3
Answer: around 137.33
Explanation:
solve for v -20=-5/3v
Answer:
v = 15/2
Decimal Form:
v = 7.5
Mixed Number Form:
v = 7 1/2
Explanation:
Hope this helps!
Which best explains the importance of indicator species?
Answer:
Explanation:
ndicator species (IS) are animals, plants, or microorganism used to monitor changes in our environment. For example, they can tell us about the impact of pollution on an ecosystem, or how well an impaired environment is being managed or restored.
Is it possible for an object to use or contain more than one energy form?
Answer:
Yes
Explanation:
There are 2 energy forms which one can transfer to and or from. An objects energy can be converted from one form to another.
How are ferns, gymnosperms, and angiosperms alike?
Answer: They all are vascular plants.
Explanation:
Gymnosperms are the plants which have naked seeds and ovules. They do not produce flowers. The angiosperms are the flowering plants. The ovules are enclosed inside the female flower. They produce seeds. The ferns are the seedless plants, they reproduce via spores. Gymnosperms, angiosperms and ferns share common characteristics like they have vascular system that is tissues like xylem and phloem help in conduction of water and minerals from the soil. The plant body is differentiated into root, stem and leaves. They all have photosynthetic pigments in them.
Which of the following is the main cause of acid rain?
water vapor
photosynthesis
ozone depletion
smog
Answer:
photosynthesis
Explanation:
Answer:
Photosynthesis
Explanation:
I had it on a quiz.
Four identical flasks, at the same temperature and pressure, contain the gases CH4, H2, CO2 and Kr respectively. Which flask contains the greatest number of particles?
H2
CH4
CO2
Kr
all are the same
Answer:
All the gases have the same number of molecules.
In a 0.100M solution of a weak polyprotic acid what is the equilibrium concentration of A-2?
H2A+H20-H30+A-2
Ka1=7.5x10^-5
Ka2=6.2x10^-8
answer= ?x10^?
Is browning and producing new flavor compounds as something cooks a chemical or a physical change?
Answer:
I believe it is a chemical change
Explanation:
because it is changing into something new
explain how the albedo of a surface area would affect the climate in both seasons
Answer:
Albedo affects the climate by controlling the amount of radiation a particular planet absorbs, weather can also depend on how much the earth absorbs radiation in case of the earth.
.
Calculate the percent yield if the theoretical yield is 50.0 g of a
product and the actual yield is 42.0 g.
Answer:
84% yield
42/50 = 0.84 = 84%
What's the similarity between Gas and Liquid?
Answer:
Liquids and gases flow easily because their particles can move or slide past one another.
Explanation:
Hope this helped Mark BRAINLEST!!
A. Reaction with what gas in the atmosphere makes natural rain water slightly acidic? (2 points)
B. Describe the chemical reactions that occur to change sulfur to sulfuric acid. (2 points)
C. How much more acidic is acid rain water with a pH of 2 than unpolluted rainwater with a pH of 6? Use your knowledge of pH (not the information provided in this article) and show your work. (2 points)
Answer:
See explanation
Explanation:
On the pH scale acidity ranges from pH values of 0-6.9. Natural rain water is slightly acidic due to the presence of carbon dioxide in the atmosphere which is an anhydride of carbonic acid.
CO2(g) + H2O(l) -------> H2CO3(aq)
B. The equations that turn sulfur to sulfuric acid are;
S(l) + O2(g) -----> SO2(g)
2SO2(l) + O2(g) -----> 2SO3(g)
SO3(g) + H2SO4(l) -----> H2S2O7(l)
H2S2O7(l) + H2O(l) ----> 2H2SO4(l)
-
At pH 6, H^+ concentration = 1 * 10^-6 M
At pH 2, H^+ concentration = 1 * 10^-2 M
Hence;
1 * 10^-2/1 * 10^-6
= 10^4 times more acidic
why would it have been a bad idea to plant 100 seeds in your plant experiment?
In an ecosystem it is a bad idea to plant 100 seeds in your plant experiment as there would be competition for resources among the seeds.
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
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The compound that forms between nitrogen and chlorine is
a. ionic
b. molecular/covalent
Answer:
Covalent bonding is a type of chemical bonding which is characterized by atoms sharing electrons. For nitrogen and chlorine to covalently bond, nitrogen needs 3 electrons. Chlorine only has one electron therefore two more chlorine molecules are needed. Because one atom of nitrogen needs 3 atoms of chlorine to bond, the formula will be NCl3.
Pleasee help me pleaseeeeeeeeeeee i need help
How does the water help a fossil form?
The answer is 1
2. A clear, colorless liquid is mixed with a clear, blue liquid resulting in a white powder suspended in a clear,
colorless liquid. Has a chemical reaction occurred? Why or why not?
Answer:
Yes, a chemical reaction has occurred
Explanation:
A chemical change is known to lead to the appearance of a new substance. Another name for chemical change is chemical reaction.
The new substance is formed when the bonds in the reactants are being rearranged to yield the products of the reaction.
In this case, two clear liquids were mixed and the contents of the system interacted briefly to yield a new product which appears as the white powder suspended in a clear, colorless liquid.