Answer:
yeah if enough pressure or force is added
How will you separate a solution of benzene and chloroform?
Answer:
[tex]\huge\boxed{\sf Distillation}[/tex]
Explanation:
State of benzene at RTP = liquidState of chloroform at RTP = liquidBoiling point of benzene = 80.1 °CBoiling point of chloroform = 61.2 °CSince, both of the chemicals are liquids, we can separate it by the process of distillation.
Distillation:
is the process in which we separate two liquids on the basis of their difference in boiling points.How it works:
Since chloroform has less boiling point, it will evaporate and collected first and benzene will follow it after sometime.
- Apparatus of distillation is in the attached file.
[tex]\rule[225]{225}{2}[/tex]
What is Ivan Pavlov most known for?
Answers may vary: His experiment in which he trained dogs to salivate at the sound of a bell
Ivan Pavlov is most known for demonstrating conditioned lreflex in dogs.
what is conditioned reflex?Conditioned reflex is a reflex action which has been conditioned to occur even without the stimulus which produces the reflex.
Ivan Pavlov is known to demonstrate conditioned reflex in dogs.
In his experiment, he trained dogs to salivate at the sound of a bell even if food which is the stimulus that produces salvation was not present.
Learn more about conditioned reflex at: https://brainly.com/question/24968947
Answer:
A conditioned reflex is a reflex action that has been trained to occur even when the stimulus that causes the reflex is not present.
Ivan Pavlov is recognized for using dogs to illustrate conditioned reflexes.
He trained dogs to salivate at the sound of a bell even when food, the stimulus that induces salvation, was not present in his experiment.
Explanation:
8. I have a mixture of iron, salt, and
water. I heat it up to a boil.
Explain what happens to each part
of my mixture.
After boiling the mixture of iron salt, water
iron, and salt it will remain and water will be evaporated
What is respiration? Explain in your own words
Answer:
breathing
Explanation:
Your welcome lol
hope this helps :) pls give brainliest
Answer:
SEE BELOW
Explanation:
The act or process of breathing i.e the inhaling of oxygen and the exhaling of carbon dioxide. The process in which cells use oxygen to break down sugar and obtain energy which is used for various purposes.
If an isotope decays by the process of beta emission,
a. the number of neutrons remains the same
b. the atomic number changes
c. the mass number changes
d. protons are given off
Please help me
Calculate the percentage of nitrogen in the two important nitrogen fertilizers,ammonia, NH3 and Urea, CO(NH2)2
Answer:
Percent composition = mass of element in the compound/mass of compound × 100
In this case, the mass of the compound is its molar mass.
Percent Composition of N in CO(NH2)2 (urea)
Molar mass CO(NH2)2 = 60.056 g/mol
Mass of N = 2×14.007 g/mol = 28.014 g/mol
%N: 28.014 g/mol/60.056 g/mol × 100 = 46.646%
Percent Composition of N in NH4NO3 (ammonium nitrate)
Molar mass of NH4NO3 = 80.044g/mol
Mass of N = 2×14.007 = 28.014 g/mol
%N: 28.014 g/mol/80.044 g/mol × 100 = 34.998%
Hope this helps, please let me know If I'm wrong.
What is a new trend in the recreational drug field?
Answer:
depressants
Explanation:
these are new to the recreational area of drugs
Once a hypothesis becomes a theory, is it then considered an absolute fact? Explain.
Answer:
No, a hypothesis can only become a fact if the outcome happens over and over. A theory means that it could be true but the outcome can also be false.
Explanation:
What do all types of waves transfer from place to place? A. air B. energy C. matter D. water
Answer:
Water is the answer
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Predict the products
___Cu(NO3)2 + ___NaOH → ___ ________ + ___ ________
___ CuO + 2 HCl → ___ H2O + ___ ________
Answer:
1.) Cu(NO₃)₂ + 2 NaOH --> Cu(OH)₂ + 2 NaNO₃
2.) CuO + 2 HCl --> H₂O + CuCl₂
Explanation:
Both of these reactions are substitution/double displacement reactions. The base reaction looks like this: AX + BY --> AY + BX. In other words, the negative ion of the first molecule bonds to the positive ion of the second molecule, and vice versa.
The products of the first equation are:
Cu(NO₃)₂ + NaOH --> Cu(OH)₂ + NaNO₃
The OH⁻ and the NO₃⁺ are polyatomic ions, meaning they stay together in these types of reactions. When determining the products, make sure to take note of the charges on the ions because subscripts may be necessary to balance them out.
Now you need to balance the coefficients. When balancing equations, begin with an element that is not present in more than one molecule on either side (ex. the oxygen is in two molecules on the reactant side). Keep in mind that the subscripts should be multiplied by the coefficients when determining the number of some elements.
The balanced first equation is:
Cu(NO₃)₂ + 2 NaOH --> Cu(OH)₂ + 2 NaNO₃
The process for the second equation is nearly identical to the first. The balanced second equation is:
CuO + 2 HCl --> H₂O + CuCl₂
3. A 1.000 g sample of an unknown hydrate of copper chloride is gently dehydrated. The copper is isolated and weighs 0.248 g.
Develop a method for determining the empirical formula of the copper compound and for determining the percent by mass of copper in the compound.
Remark: The experimental data table obtained by the student is shown below.
Data:
Mass of crucible 20.43 g
Mass of crucible + CuxCly • zH2O. 21.43 g
Mass of crucible + CuxCly 20.976 g
Answer: not sure on actual answer, but heres a answer on a similar question with just different quantities.
Explanation: just minus the terms i got and u should be okay
In which section(s)/point(s) is the car not moving/at rest?
Answer:
a-b and e-f
Explanation:
At these intervals, there is no change in distance covered as time continues.
9. I have a mixture of iron, salt, and water. I bring a magnet close by. What does the magnet pick up and what is left behind?
Explanation:
magnet will attract iron.
salt and water is left behind
Compare the location of bonding electrons in a polar covalent bond with those in a nonpolar covalent bond!!?????!????? I NEED HELPPPP
Answer:
A polar covalent bond will have the electrons shifted more towards one side or the other; a nonpolar bond will have evenly distributed electrons.
Explanation:
The basis for a polar bond is that the electrons are shared unevenly. Some elements are more electronegative than others; that is, they pull harder on the electrons and tend to have more electrons around them. Following the periodic trends, Fluorine is the most electronegative element, so it will likely have the most dense area of electrons in a molecule. All this means that in a polar molecule, the electrons will be spread out unevenly along the lengths of the bonds as some elements will pull on them more than others will.
Nonpolar molecules do not have to worry about differences in electronegativity, and so the electron density will be pretty evenly distributed along the entire molecule.
Hope this helps! :)
A blue fish and a yellow fish mate and have green offspring. What type of inheritance is this an example of?
The type of inheritance displayed by the illustration is incomplete dominance.
Incomplete dominanceIt is a kind of inheritance in which one of the two alleles of a gene exerts incomplete influence on the other allele.
For example, a cross of white and red flower plants yielding a plant with pink flowers. It means that the dominance of the red or pink allele is incomplete.
The same is applicable to a blue fish mating with a yellow fish to produce green offspring. A blend of the two colors occurred.
More on incomplete dominance can be found here: https://brainly.com/question/14053639
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Pls help me on this question and I will grant 100 points and brainly mark for the first 5 correct answers. Also I need it ASAP
Answer:
Explanation:
i) Red as Methyl orange shows red color in acidic medium and hyrdochloric acid is acidic.
ii) In 10cm^3 of 0.100 mole/dm^3 of hydrochloric acid, there are:
10/1000*0.1 = 1.00x10^(-3) moles of hydrochloric acid were used.
The reason an increase in substrate concentration does not increase the reaction rate indefinitely is because
Answer:
Increasing substrate concentration also increases the rate of reaction to a certain point. Once all of the enzymes have bound, any substrate increase will have no effect on the rate of reaction, as the available enzymes will be saturated and working at their maximum rate.
someone help me what is the difference between alchemy and chemistry
Answer:
Alchemy is based on mystic view of reality whereas chemistry is based on experiments, observations and facts.
Which pair of compounds represents one arrhenius acid and one arrhenius base?.
Explanation:
use the diagram above to understand it
NEED HELP!
Find the sum of 4.5 mm and 24.4 mm.
28.9 mm >
6.9 mm
30 mm
29 mm
Answer:
28.9
Explanation:
4.5+24.4
= 28.9
Mark me as a brainlist.I hope this helps you.
Calculate the pH for the following solutions and indicate whether each solution is acidic or basic.
[H+] = 2.4 × 10-6M pH = __________ Acid/Base
[tex]\\ \rm\Rrightarrow pH=-log[H^+][/tex]
[tex]\\ \rm\Rrightarrow pH=-log(2.4\times 10^{-6})[/tex]
[tex]\\ \rm\Rrightarrow pH=-log2.4-log10^{-6}[/tex]
[tex]\\ \rm\Rrightarrow pH=-0.38+6[/tex]
[tex]\\ \rm\Rrightarrow pH=5.62[/tex]
AcidExplain when the term vapor should be used to describe the gas phase.
What do you know about other ecosystems in which predators havre caused their prey to go extinct
Answer:
Humans :)
Explanation:
Humans have killed so many species of wolves, deer, tigers, lions and bears oh my!
In the food chain, we, humans are at the top because of this
Limiting and Excess Reactant
1. Aluminum chloride, AlCl3, can be made by the reaction of aluminum with chlorine according to the following equation (must be balanced first):
2Al + 3Cl2 ------> 2AlCl3
What are the limiting and excess reactants if 20.0 grams of Al and 30.0 grams of Cl2 are used?
2. Chloroform, CHCl3, reacts with chlorine, Cl2, to form carbon tetrachloride, CCl4, and hydrogen chloride, HCl. In an experiment 25 grams of chloroform and 0.36 mol of chlorine were mixed. Which is the limiting reactant? The equation is given as
CHCl3 + Cl2 -------> CCl4 + HCl
Answer:
1. LR: Cl2, ER: Al 2. LR: CHCl3
Explanation:
1. Find g/moles of Al and Cl2
g/moles of Al: 0.74 and Cl2 is 0.42
We can find the limiting reactant by take those number divided by 2 and 3
0.74 divided by 2 = 0.37
0.42 divided by 3 = 0.14 so 0.14 is the least -> that going to be the limiting reactant. (Cl2)
Now we know Al is a excess reactant.
2. That equation is already balanced and it's already give us 0.36 mole of chlorine, now we just need to find the mole of chloroform ( CHCl3 )
To do that we need to find the molar mass of CHCl3 which is 119.0 g/moles
then take 25 grams ÷ by 119g/moles we will get: 0.21 mole of CHCl3 that's mean CHCl3 is a limiting reactant.
Why do you feel the force of Earth's gravity?
•Why do you feel the force of Earth's gravity?
Answer:
•Earth's gravity comes from all its mass. All its mass makes a combined gravitational pull on all the mass in your body. That's what gives you weight. And if you were on a planet with less mass than Earth, you would weigh less than you do here.
Explanation:
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What is the ionization of Ba(OH)2? Please help!
The ionization potential of Ba(OH)2 was found to be 8±1 eV, with a value of 6±1 eV for the monohydroxide.
Where does Respiration mainly take place in?
A - Mitochondria
B - The nucleus
C - The cell wall
D - The vacuole
help!!
You see a large number of waves that are very tall. What is the appropriate wave description?
A. Small frequency; small amplitude
B. Large wavelength; large amplitude
C. Large frequency; small amplitude
D. Large frequency; large amplitude
What type of bonds are located between the nucleotides found in the same DNA strand ?
Group of answer choices
phosphodiester
hydrogen
hydrophobic
van der waals
ionic
Answer:
hydrogen bond exists between nucleotides
Answer:
phosphodiester
Explanation:
Noncovalent hydrogen bonds connect the nucleotides that make up each DNA strand. Individual hydrogen bonds are weaker than covalent bonds like phosphodiester bonds. But they are so numerous that they strongly connect the two DNA polymers.
I hope this helps you
:)
Fission involves the _________________ of an atom into smaller particles, while fusion occurs when smaller particles _________________.
Answer:
1. Splitting
2. Combine
Explanation: