Answer:
Explanation: The longer the alkyl chain, the less soluble in water is the alcohol. Methanol and ethanol are infinitely miscible in water; propanol and butanol have limited solubility. ... Hydrogen bonding with water thus becomes less viable, and solubility of the long-chain alcohol IN WATER decreases.
Explanation:
6. A father rabbit had long ears while the mother rabbit had short ears. Which of these statements
explains why one of the baby bunnies could have long ears?
a
The baby bunny inherited its copies of the gene for ear length from its father and not from
its mother. Those genes connect together to make its ears long.
b
The baby bunny inherited its copies of the gene for ear length from its father and not from
its mother. Just like its father's genes, those genes instruct for proteins that connect in
ways that make its ears long.
С
The baby bunny inherited one copy of the gene for ear length from its father and one copy
from its mother. That gene combination instructs for proteins that connect in ways that
make long ears.
d
The baby bunny inherited one copy of the gene for ear length from its father and one copy
from its mother. Those genes connect together to make its long ears.
Answer:
D if I’m correct
Explanation:
Charles's law describes the relationship of the volume and temperature of
gas at a constant mass and pressure. According to this law, what would
happen to the volume of the gas if its temperature increased from 150 K to
300 K?
A. The volume would increase from 150 mL to 300 mL.
B. The volume would be reduced by half.
C. The volume would decrease by 150 mL.
D. The volume would double.
Answer:
Charles's law is: When the pressure on a sample of a dry gas is held constant, the Kelvin temperature and the volume will be in direct proportion. So the volume would increase
Which of the following is not a unit of volume?
A
L
B
mL
C
m^3
3
D
cm^2
2
PLEASE ANSWER ASAP !! NEED THIS HANDED IN TN
Answer:
The orest one is possible D
Explanation:
Some students believe that teachers are full of hot air. If I inhale 2.1 liters of gas at a temperature of 200 C and it heats to a temperature of 370 C in my lungs, what is the new volume of the gas?
Answer:
2.86L
Explanation:
Given parameters:
V1 = 2.1L
T1 = 200°C = 200 + 273 = 473K
T 2 = 370°C = 370 + 273 = 643K
Unknown:
V2 = ?
Solution:
Since pressure is constant, we apply the Charles's law;
[tex]\frac{V1}{T1}[/tex] = [tex]\frac{V2}{T2}[/tex]
V is volume
T is the temperature
1 is the initial state
2 is the new state
[tex]\frac{2.1}{473}[/tex] = [tex]\frac{V2}{643}[/tex]
V2 = 2.86L
Determine the number of valence electrons for each of the following:
O
Cs
Ca
Se2-
Na+
C
N
Al
He
A student increases the temperature of a 673 cm^3 balloon from 275 K to 460 K.
Assuming constant pressure, what should the new volume of the balloon be?
Round your answer to one decimal place.
Answer:
1125.75 cm³
Explanation:
We are given;
Initial volume; V1 = 673 cm³
Initial temperature; T1 = 275 K
Final temperature; T2 = 460 K
From Charles law, we can find the new volume from;
V1/T1 = V2/T2
V2 = (V1 × T2)/T1
V2 = (673 × 460)/275
V2 = 1125.75 cm³
How to calculate the number of molecules in 18g of H2O
We, know molecular mass of water is, M = 16 g/mol .
Given mass of water, m = 18 g.
We know, number of moles is given by :
[tex]n = \dfrac{18\ g}{16 \ g/mol}\\\\n = 1.125\ moles[/tex]
Now, 1 mole of any compound contains 6.022 × 10²³ molecules.
So, number of moles in 1.125 moles of water is 1.125 × 6.022 × 10²³ =
6.77 × 10²³ molecules.
Hence, this is the required solution.
The complete combustion of acetic acid, HC2H3O2(I) to form water, H2O(I), and CO2(g), at constant pressure releases 871.7 kJ of heat per mol of acetic acid.
Write a balanced thermochemical equation if 5.0g of acetic acid will be used in the reaction.
HC2H3O2(I) + O2 --- H2O(I) + CO2(g) H= -871.7 kJ
Answer:
HC2H3O2(I) + O2(g) ---> H2O(I) + CO2(g) ΔH= -72.35 kJ
Explanation:
We know that 5.0 g of acetic acid will contain, 5.0g/60 g/mol = 0.083 moles of acetic acid
Now from the reaction equation;
1 mole of acetic acid evolved -871.7 KJ of heat
0.083 moles of acetic acid will evolve 0.083 * -871.7 = -72.35 KJ
For 5.0 g of acetic acid, we can write;
HC2H3O2(I) + O2(g) ---> H2O(I) + CO2(g) ΔH= -72.35 kJ
Which three elements are combined in lithium sulfate ?
Answer:
jsidndnxjxixdjdbsjsjdidnsjdjdidndjd
What does microbiome do to your cells?
_____ are bits and pieces of material that end up in a body of water.
Answer:
sediments
Explanation:
A 5.0 g sample of metal was heated to a temperature of 100.0 °C then placed into a calorimeter containing 35 mL of water at 20.0°C.
The final temperature was 26.5°C What is the specific heat capacity of the metal?
The specific heat capacity of the metal : c = 2.59 J/g °C
Further explanationGiven
5 g sample
35 ml water = 35 g
Required
The specific heat capacity of the metal
Solution
Heat can be formulated :
Q = m.c.Δt
Q in = Q out
Q absorbed = Q released
Q water = Q metal
35 g x 4.184 J/g °C x (26.5-20)= 5 x c x (100-26.5)
951.86 J = 367.5 x c
c = 2.59 J/g °C
Ionic bonds form between _____ which form positively charged ions and _____ which form negatively charged ions.
ionic bonds form between metals which form positively charged ions and nonmetals which form negatively charged ions.
Atmosphere
B
Ocean
Land
с
Which arrow or arrows represents a change of state from a liquid to a gas caused by the
sun's energy?
A. arrow A
B. arrow B
C. arrow A and arrow B
D. arrow B and arrow C
The proton number of barium (Ba) is 56. It is in Group II of the periidic table how many electrons would you expect a barium atom to contain in its outer energy level?
Answer:
A barium atom would be expected to contain 2 electrons in its outer energy level.
Explanation:
The columns of the periodic table are called groups. There are eighteen groups, numbered from 1 to 18.
The elements of each group have the same number of electrons in their last atomic shell, which is why they have similar chemical properties, because the chemical properties of chemical elements are strongly related to the electrons located in the last atomic shell.
That is, in a group, the chemical properties are very similar, because all the elements of the group have the same number of electrons in their last or last shells.
A barium atom would be expected to contain 2 electrons in its outer energy level.
Which job title describes a person with a career in green energy?
Answer:
Natural resource professional
Explanation:
The job title that describes a person with a career in green energy is a hydroelectric technician. The correct option is c.
What is green energy?Green energy is renewable energy and these energies are produced by renewable resources. Renewable resources are the resources that will not be reduced, and these natural resources are present, and these energies can reproduce again by these resources.
The hydroelectric technician is the person who checks the technical problems of a hydroelectric power plant. Hydroelectricity is produced by water.
This is a renewable resource, and it does not produce any kind of pollution, So a hydroelectric technician will be a job title that describes a person with a career in green energy.
Therefore, the correct option is c., hydroelectric technician.
To learn more about renewable energy, refer to the link:
https://brainly.com/question/17373437
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The question is incomplete. Your most probably complete question is given below:
Elevator installer
sewing machine operator
hydroelectric technician
animal trainer
1. A dry, empty bottle is placed in an ice bath. After the air inside the bottle is cooled off, a balloon is placed
over the opening. The bottle with the balloon is then placed in very hot water and the balloon inflated. Why
did the balloon inflate?
Answer:
hot air rises and expanded the balloon
Explanation:
thats it.
Complete the following sentence: In a reaction containing two reactants, if one of the reactants is in excess, the other reactant is known as the ______ reactant.
Answer:
excess reactant
Explanation:
The excess reactant is the reactant in a chemical reaction with a greater amount than necessary to react completely with the limiting reactant. It is the reactant(s) that remain after a chemical reaction has reached equilibrium.
In a reaction containing two reactants, if one of the reactants is in excess, the other reactant is known as the limiting reactant which decides the yield of the reaction.
What is limiting reactant ?In a reaction, all the reactants have to be in correct stoichiometry to complete the reaction. To achieve the mole ratio of the reactants is very much important for the completion of a reaction.
If a reactant is insufficient in amount, then the reaction will stop as soon as this reactant is consumed. Hence, this reactant determine the yield of the product. This reactant which is not in correct stoichiometry for the complete reaction is called the limiting reactant.
The reactant which is excess in quantity thus does not have a role in the yield of the reaction is called the excess reactant. Whatever, the concentration of this reactant in extra, the reaction does not proceed after the consumption of limiting reactant.
Find more on limiting reactant :
https://brainly.com/question/14225536
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Please help with this
How many grams of NH3 are needed to make 2.50 moles of (NH4)2SO4?
2 NH3(g) + H2SO4(aq) --> (NH4)2SO4(aq)
Answer:
85.155g NH3
Explanation:
LOOK AT THE PICTURE!! i’ll mark as brainliest!!
Answer:
c
Explanation:
5. Solve the following crossword puzzle.
a. Maximum energy generation in India is done using ........ energy.
b. energy is a renewablesource of
energy.
c.Solar energy can be called.... energy.
e. ......... energy of water in dams is used for generation of electricity.
Answer:
I think it is b
Explanation:
16.
As the elements in Group 17 on the Periodic Table
are considered from top to bottom, what happens
to the atomic radius and the metallic character of
each successive element?
A. The atomic radius and the metallic character
Aboth increase.
B. The atomic radius increases and the metallic
character decreases.
C. The atomic radius decreases and the metallic
character increases.
D. The atomic radius and the metallic character
both decrease.
Answer:
Explanation:
When going from top to bottom in any group of the periodic table, the atomic radius always tends to increase
Which three elements have the most similar chemical properties?
1.
Ar, Kr, Br
2
K, Rb, Cs
3.
B, C, N.
4.
O, N, Si
Answer:
2.
Explanation:
Beacuse they are all group 1 metals. All have the same boiling, melting point and reactivity due to one electron in its outer shell.
Potassium(k), rubidium(Rb), and cesium(Cs) are the three elements from the given list that have the most similar chemical properties.
Therefore the correct answer is option 2.
What is the atomic number?The total number of protons present in an atom is known as the atomic number of that atom. The atomic number has no correlation either with the number of neutrons or the number of electrons present inside an atom.
While the atomic mass of an atom is the sum of the total number of protons and the number of neutrons present inside of any atom.
From the list of elements, potassium (k), rubidium (Rb), and cesium (Cs) are the three that share the most chemical similarities.
Thus, option 2 is the right response.
To learn more about the atomic number from here, refer to the link;
brainly.com/question/14190064
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The Aufbau Principle describes that
O electrons with the same spin cannot occupy the same orbital.
electrons will occupy single orbitals within and energy level before doubling up
electrons fill lower energy levels first before occupying higher energy levels.
O electrons in the same level have the same amount of energy
Answer:
electrons fill lower energy levels first before occupying higher energy levels.
Explanation:
The Aufbau's principle describes that electrons fill lower energy levels first before occupying higher energy levels.
In writing the electronic configuration of atoms, the Aufbau's principle is one of the most important principles to consider.
It states that "sublevels with with lower energies are filled up before those with higher energies".
Sublevels do not fill up in numerical order.
what is the correct answer !
Answer:
Hi there, The correct answer is, OPT A
Explanation:
Please mark as the brainliest
Is water a reactant or product?
Answer: Reactant
Explanation:
In simple wording, Water act as a reactant and it broke or we can say split the larger molecule in the smaller ones, The H and OH bonds are attached to the two products that are formed after the reaction. Another process in which water is used as an important reactant is photosynthesis.
how does the concentration of sodium thiosulphate affect the rate of reaction in between hydrochloric acid and sodium thiosulphate
Answer: C
Explanation:
I know because i did it.
Which technique helps you become more resoureful
Answer:
There is an abundance of technology to help students become more resourceful and productive. For example, mind mapping can help kids better understand problems and devise plans by visualizing connections, outlining different sides of issues, and determining next steps.
Explanation:
Energy of motion is called ________energy *
Answer:
Kinetic - Kinetic energy is the energy of motion
Explanation:
Thermal energy - heat energy
Potential energy - energy that is stored
Hope this helped!
Have a supercalifragilisticexpialidocious day!
