What is the iupac name of CH3-CH2-CH2-OH?
Answer:
the iupac name of CH3-CH2-CH2-OH Propanol.
Can someone help me please
Answer:
I believe the answer is C.
Answer:
C
Explanation:
green house gases effects increases global warming
If the [H+] in a solution is 1.0 x 10-7M, what is the [OH-] of this solution?
A. Higher than [H+]
B.lower than [H+]
C.same as [H+]
Answer:
C.same as [H+]
Explanation:
Autoionization of water is expressed as H+ * OH- = Kc
The value of Kc is 1*10^-14. Now simply plug thus in and the value of given H+ to solve
(1*10^-7) * OH- = 1*10^-14
OH- = 1*10^-7
Thus, in this scenario, the H+ and OH- ions have same concentration and solution is said to be neutral.
A gas at 1.8 atm, 140 K, and 4.5 L is adjusted to standard temperature and
pressure conditions. What is the new volume?
From the equation, [tex]\frac{p1 * v1}{t1} = \frac{p2 * v2}{t2}[/tex], we make v2 the subject of the formula, so that gives us: [tex]\frac{p1 * v1 * t2}{p2 * t1}[/tex]
Standard temperature = 273k
Standard pressure = 1atm
Plugging in our values, [tex]\frac{1.8 * 4.5 * 273}{1 * 140} = \frac{2211.3}{140} = 15.795 litres[/tex]
The symbol delta (Δ) indicates that the reactant or the product is in an aqueous solution.
true
false
Given the formula of a compound:
(1) aldehyde
(2) alkene
(3) alkyne
(4) alcohol
Answer:
Number 3 alkyne is the answer
Explanation:
Answer: The answer is Alkyne.
How many moles of solute are contained in 3.0 L of a 1.5 M solution? Helppp pleaseee
when you hold a metal coat hanger in a camp fire to roast a marshmallow, the coat hanger might get too hot to hold. what type of heat transfer is occurring between the metal coat hanger and your hand? explain what is happening at the molecular level that causes your hand to feel hot.
Answer:
Heat transfer by conduction
True or False: The products of a chemical
reaction are
using the same atoms that
made up the reactants.
Answer:
true
Explanation:
Which phrase describes a volcano that is not expected to erupt again?
1 quiet volcano
2 extinct volcano
3 dormant volcano
4 explosive volcano
Answer:
Extinct
Explanation:
Extinct volcanos are not expected to erupt, and have not erupted in a very long time.
Please help!!! If u reply with a link i will report
M = mRT/PV
Use the equation above to find the molar mass of a 98.2 g sample of gas that fills a 50.0 liter container at STP
a. 4.00 g/mol
b. 44.0 g/mol
c. 1.48 g/mol
d. 32.0 g/mol
How do scientists verify the results of an experiment?
by analyzing results
by communicating with other scientists
by collecting data
by repeating the experiment
Answer:
by repeating the experiment
Explanation:
sometimes repeating the experiment with multiple trials can help make the experiment worth it
What is a single-displacement reaction?
a type of reaction that occurs when two simple substances interact to form a single new, more complex compound
a type of reaction that occurs when a single substance breaks down into two or more less complex substances
a chemical reaction that occurs when a substance combines with molecular oxygen, releasing light and heat
a chemical reaction that occurs when one element within a compound is exchanged with another element
Answer:
it's the last one.
Explanation:
a compound reaction that occurs when one element within a compound is exchanged with another element.
The H-O bonds in H20?
Answer:
Each water molecule can form two hydrogen bonds involving their hydrogen atoms plus two further hydrogen bonds utilizing the hydrogen atoms attached to neighboring water molecules.
Explanation:
Discuss availability of the lone pair of electrons to electrophile in dative bonding
Answer:
Explanation:
Here, a balance between attraction between nucleus and electrons, and electron-electron, and nuclei-nuclei repulsion play role.
All chemical bonds are formed by overlapping of orbitals. If the electronegativity of the two elements forming the bond is very different (elements from the 1st ,2nd groups with elements of 7th group) then ionic bond are formed. If the electronegativities are more similar, then overlapping is stronger, and covalent bonds are formed.
Which of the following describes an impact of the specific heat of water on the planet and the life forms that exist on it?
a) places near the sea show high high temp variation
b) inland cities have moderate temperatures throughout the year
c) marine life experiences sudden spikes and drops in temperature
d) sweat requires a lot of thermal energy to be absorbed to evaporate
Answer:
The answer is D, "sweat requires a lot of thermal energy to be absorbed to evaporate."
Explanation:
Like the other person, I just took the test.
An impact of the specific heat of water on the planet and the life forms in it is: D. sweat requires a lot of thermal energy to be absorbed to evaporate.
What is thermal energy?Thermal energy is also referred to as heat and it can be defined as a form of energy that is transferred from one physical object to another, especially due to a difference in temperature.
Generally, a lot of thermal energy is required to be absorbed for sweat to evaporate and this is mainly due to the impact of specific heat of water on the planet and all the life forms that are existing on it.
Read more on thermal energy here: brainly.com/question/12072129
How many calories are absorbed in a process that absorbs 0.128 joules?
Answer:
There are 0.0305 calories in 0.128 joules
Explanation:
Given that,
Heat absorbed, Q = 0.128 J
We need to find the heat energy absorbed in calories.
We know that the relation between joules and calories is as follows :
1 calorie = 4.184 J
1 J = (1/4.184) J
So,
[tex]0.128\ J=\dfrac{0.128 }{4.184}\\\\=0.0305\ cal[/tex]
So, there are 0.0305 calories in 0.128 joules
On the calendar provided below, the full moon is shown happening on the eleventh of the month? What moon would you see around the 25th of the month, shown with the question mark? Question 8 options: A. First Quarter B. New Moon C. Waxing Crescent D. Waning Gibbous
Answer:
The correct answer is - B. New Moon.
Explanation:
The change of moon disc from all black to all light to all dark again is called the lunar cycle. It takes almost 30 days (29.53059 to be precise). The time from all black to all light or all light to all black is almost 15 days. All black moon is termed as the new moon and all light is termed as the full moon.
As given that the full moon is shown happening on the eleventh of the month then what moon would be around 25 which is 14 days later that should be in waxing gibbous phase and almost new moon.
Thus, the correct answer is - B. new moon.
4. The only two elements in alkanes, alkenes and alkynes are...
(1) carbon and nitrogen
(2) carbon and hydrogen
(3) oxygen and nitrogen
(4) oxygen and hydrogen
Which wave has high enough energy to cause damage to skin and sometimes cancer?
Answer: Ultraviolet rays are the wave which has high enough energy to cause damage to skin and sometimes cancer.
Explanation:
Ultraviolet rays also known as UV rays have a range of wavelength from 400 nm to 10 nm.
As energy is inversely proportional to wavelength. Hence, shorter is the wavelength of a UV-ray higher will be its energy.
Also, UV rays have high enough energy due to which they are able to penetrate through the living cells causing damage to the skin. If a person remains under UV rays for a longer period of time then it can cause sunburn and could also cause skin cancer.
Thus, we can conclude that ultraviolet rays are the wave which has high enough energy to cause damage to skin and sometimes cancer.
How many moles of HCI would you have if you have 7 L of a 9M solution
of HCI? *
Explanation:
1kg x 0,37=370gHCL
370g/36,5g/mol=10,137mol/kg
1l=1,185kg
10,137 x 1,185kg/l =12,0mol/l
(x/ml(12mol HCL)*12mol/L)/100ml=0,025mol/L
x=
Which of these describes a similarity between nuclear energy and fossil fuel?
A. Both release products with short half-lives.
B. Both fuels have the same energy density.
C. As both fuels undergo reactions, heat is released, which is used to
do work.
D. The cost of storing both fuels is expensive.
SUBMIT
The similarity between nuclear energy and fossil fuel is "as both fuels undergo reactions, heat is released, which is used to do work."
What is nuclear energy?Nuclear energy is the type of power produced when a nuclear reaction releases energy. Nuclear energy was exemplified mostly by the electricity generated by just a nuclear reactor, which is Japan's principal source of energy.
What is fossil fuel?Fossil fuel is just a hydrocarbon-containing component that occurs naturally in the earth's crust and is collected and being used as a fuel. The most popular fossil fuels are coal, crude oil, and natural gas.
Therefore, similarity between nuclear energy and fossil fuel is both fuels undergo reactions, heat is released, which is used to do work.
To know more about nuclear energy and fossil fuels
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2. To make the correct volume of stock solution, which should you add first to a volumetric flask, the solid or water? Why?
Answer:
A stock or standard solution is a solution in which you accurately know its concentration. You can make stock solutions in the chemistry laboratory or buy from chemical manufacturers. Once you have a stock solution, you can prepare solutions of lower concentration by diluting the concentrated stock solution.
Explanation:
To make the correct volume of stock solution, we should add first solid to a volumetric flask.
What is stock solution?Stock solution is a standard solution in which exact concentration of solute is present in particular volume. It is mainly used in analytical chemistry during the titration process.
During the preparation of stock solution, we should first add solid in the volumetric flask and then little amount of water to dissolve the solid and then finally add water to the required volume. If we first add total volume and then add solid then dissolution of solid may increase volume.
Hence, first we add solid in the volumetric flask.
To know more about stock solution, visit the below link:
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To test paint quality, scientists designed an experiment where the paint was exposed to temperatures ranging from 260 degrees Celsius to 650 degrees Celsius. After each trial, the paint quality was determined by checking for peeling and cracking. The same paint and materials were used in each trial.
Independent Variable-
dependent variable-
constant rate(s)
Answer:
The independent variable is the temperature to which the paint and materials are exposed
The dependent variable is the presence of peeling and cracking of the paint
The constant rates are the paint and material used for each trial
Explanation:
The treatment the to which the paint is subjected = Temperatures from 260 °C to 650 °C
The method of determining the paint quality = By peeling and cracking
The types of paint and materials used = The same paint and material
The independent variable is the variable suspected as the cause of the effect being studied. It is the variable introduced as a treatment
In the question, given that the paint is subjected to different temperatures from between 260°C to 650 °C, the temperature changes introduced is the independent variable
Therefore;
The independent variable = The temperature to which the paint and materials are exposed to
The dependent variable is the effect variable. It is the variable of the property being investigated and it is also the variable that is measured in the investigation
In the question, given that the after heating the paint and material, the scientist check for peeling and cracking, the dependent variable is the occurrence of cracking and peeling at a given temperature
Therefore;
The dependent variable = The presence of peeling and cracking of the paint
The constant rate(s) are variables which are kept constant during the investigation, under the different treatments
The constant rate(s) in the tests are the paint and material, which were kept the same for each trial to reduce the effect of underlying factors that may impact on the result and obscure the relationship between the dependent and independent variables
Therefore;
The constant rate are the paint and material used for each trial
How many calories are absorbed in a process that absorbs 0.128 joules?
A. 0.031 cal
B. 0.536 cal
C. 536 cal
D. 0.310 cal
CH4 + 2O2 --> CO2 + 2H2O
If you have 1 mole of CH4 and 6 moles of CO2 how many moles of CO2 and H2O will be produced?
Answer:
1 mole of CO2 and 2 mole H2O will be produced in the reaction.
Explanation:
N:B: I guess it will be 6 moles of O2 not CO2.
Balanced Equation: CH4 + 2O2 --> CO2 + 2H2O
Given,
1 mole CH4
6 moles of O2
According to Stoichiometry,
In the reaction,
2 mole O2 reacts with 1 mole CH4
1 mole O2 reacts with 1/2 mole CH4
∴6 mole O2 reacts with (1/2)*6 mole CH4
= 3 moles of CH4
But, there is only 1 mole CH4 provided. So CH4 is the limiting reagent.
Now,
According to Stoichiometry,
In the reaction,
1 mole CH4 produces 2 moles of H2O
Again,
According to Stoichiometry,
In the reaction,
1 mole CH4 produces 1 mole CO2
So, 1 mole of CO2 and 2 mole H2O will be produced in the reaction.
N:B:[Doing calculation with limiting reagent in problems like these gives you the most accurate answer].
PLEASE HELP
If I put more air in a car tire, which relationship does it show?
a. pressure and volume
b. temperature and volume
c. amount of gas and pressure
Selected: d. temperature and pressure
Answer:
amount of gas and pressure
what is the answer of this Al2(SO3)3 + NaOH g Na2SO3 + Al(OH)3
Answer:
Al2(SO3)3 + 6NaOH → 3Na2SO3 + 2Al(OH)3
what is a major disadvantage of crude oil as an energy resource ?
Answer:
Burning oil can pollute the air. Much of our oil has to be imported and it is becoming more and more expensive as reserves reduce and imports increase. Producing electricity from crude oil is expensive compared to other fossil fuels such as coal or gas.
Explanation:
please just help me.
Answer:
∆H= 3.92 kJ
∆S= 2.54 J
Explanation:
Hope It helps