Answers
Explanation:
both b and c since it can be both
Related Questions
What is the hottest material on earth
Answers
what is a chromatogram?
please help me out
Thank you
Answers
Answer:
a visible record (such as a series of colored bands, or a graph) showing the result of separation of the components of a mixture by chromatography.
Explanation:
Chromatography is a laboratory technique for the separation of a mixture. The mixture is dissolved in a fluid called the mobile phase, which carries it through a system on which is fixed a material called the stationary phase.
Answer:
Chromatography is a technique used to separate mixture of chemical substances into its individual compounds.
Explanation:
Place the following items in the correct order to show how a voice can be recorded and saved using an analog device.
Answers
Answer:
A person sings into a microphone.
Sound is converted to an electrical signal
The electric signal creates a magnetic code.
A magnetic code is transferred to a medium such as a tape or ...
What volume of O2 is required to react with C S2(1) to
produce 4.0L of CO2(g)?
Answers
Answer:
12 L of O₂.
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
CS₂ + 3O₂ —> CO₂ + 2SO₂
From the balanced equation above,
3 L of O₂ reacted to produce 1 L CO₂.
Finally, we shall determine the volume of O₂ needed to produce 4 L of CO₂. This can be obtained as follow:
From the balanced equation above,
3 L of O₂ reacted to produce 1 L CO₂.
Therefore, xL of O₂ will react to produce 1 L CO₂ i.e
xL of O₂ = 3 × 4
xL of O₂ = 12 L
Thus, 12 L of O₂ is needed for the reaction.
This question is about methanol
Methanol is broken down in the body during digestion.
What type of substance acts as a catalyst in this process?
Amino acid
Enzyme
Ester
Nucleotide
Answers
moles of H2O are needed to exactly react with 2.0 moles of Ca
Answers
Answer:
4
Explanation:
so first write the balance equation
Ca+2H2O---->Ca(OH)2 + H2
then use molar ratio of H2O and Ca
which is 2:1 so if there are 2 moles of ca there will be 4 moles as you times it by 2. like this
Ca:H2O
1:2
2:4
Hope this helps u understand:)
please help!!! due tomorrow and i’m really stuck!! thank you!
Answers
WILL GIVE BRAINLIEST!
__ gain electrons in the formation of ionic bonds because they have such high ionization energies indicating a strong attraction between the electrons and the nucleus.
A- metals
B- nonmetals
Answers
Answer:
A-Metals
Explanation:
because they have valence electrons
What is a system called in which energy travels between a community of organisms?
A. a habitat
B. a food diagram
C. a biome
D. an ecosystem
Answers
Answer:
D. an ecosystem
Explanation:
An ecosystem is a community of living organisms (biotic factors) interacting with one another and their physical environment (abiotic factors). In an ecosystem, energy is transferred in a unidirectional manner from one organism to another when they feed on one another. For example, energy is transferred to a goat when it feeds on a plant.
Hence, this system in which energy transference occurs between the community of organisms is an ECOSYSTEM. The transfer of energy is one of the interactions between living organisms.
Help me Look at the pictures!!!! Past due!
Make an explanation of how my hypothesis is not supported.
Answers
Answer:
Explanation:
the temperture of the warmer water will make it have more space and have less density in the water.
Give the % composition for each element found in tin (IV) nitride.
Answers
32.3699% Tin (Sn)
15.2774% Nitrogen (N)
52.3527% Oxygen (O)
Which of the following statements about alkynes is incorrect?
Alkynes are unsaturated hydrocarbons.
Alkynes have triple bonds.
Alkynes are saturated hydrocarbons.
Alkynes have carbon atoms.
Answers
Answer:
Alkynes are saturated hydrocarbons
Explanation:
Alkynes are groups of hydrocarbons that have the general formula of {Cn H2n - 2}. They have a triple carbon to carbon bond (C≡C) in their structure. Ethyne (HC≡CH) is the first member of the alkyne series.
Alkynes like alkenes are unsaturated hydrocarbons because of their triple and double carbon bonds respectively. Unsaturated hydrocarbons do not have a complete hydrogen atom in their structural composition. Hence, the statement that "Alkynes are saturated hydrocarbons" is FALSE.
When a 11.9 gram sample of copper metal is dropped into a glass of cold water, the temperature of the copper drops from 55°C to 47°C. The specific heat capacity of copper is 0.39 J/g°C. How many Joules did the water absorb from the copper?
a- 55
b- 15.5
c- 9.7
d- 31.1
Answers
Answer:
I need this one asap
Explanation:
Please
The amount of heat energy that will be absorbed by the water from the copper is 37.1 J
Data obtained from the question Mass of copper = 11.9 gInitial temperature (T₁) = 55 °CEquilibrium temperature (Tₑ) = 47 °CSpecific heat capacity of copper (C) = 0.39 J/g°CHeat absorbed by water =? How to determine the heatHeat lost by copper = heat gained by the water
Thus, we shall determine the heat lost by the copper in order to obtain the heat absorbed by the water
The heat lost by the copper can be obtained as follow:
Mass of copper (M) = 11.9 gInitial temperature (T₁) = 55 °CEquilibrium temperature (Tₑ) = 47 °CChange in temperature (ΔT) = 55 – 47 = 8 °C Specific heat capacity of copper (C) = 0.39 J/g°CHeat (Q) =?Q = MCΔT
Q = 11.9 × 0.39 × 8
Q = 37.1 J
Thus, the heat absorbed by the water is 37.1 J
Learn more about heat transfer:
https://brainly.com/question/6363778
#SPJ2
Answer is C usa test prep users.
The two main reasons why pharmaceuticals fail are:
1. they do not work
2. they are unsafe
Which of these would NOT be a constraint to creating and developing pharmaceuticals?
es )
A)
expensive
B)
takes a long time
o
computer simulations can be used to test drugs
D)
inability to use clinical trials for initial development
Answers
I don't understand it can someone explain it?
Answers
Answer:
4
Explanation: on the left side of the equation there are 4 carbons, to make 4 carbons on the right side of the equation you need 4 of the CO2 molecules.
Hi can someone who know the answers tell me what it is and pls don't send me a link also don't send me the wrong answers if you don't know it's ok :)
Answers
Answer:
you diba ikaw ang nagpamalimali diba no
Use the given Nernst equation and reaction to solve this problem. What is the potential of this cell with the given conditions?
2Li (aq) + F2(g) 2Li+(aq) + 2F- (aq)
E° = +5.92 volts
T = 200°C
[Li+] = 10.0 molar
[F-] = 10.0 molar
Answers
Answer:
The 2nd one is the one
Explanation:
and it isn't writen out all the way
Question 25 of 25
What does it mean for heat to be transferred by thermal conduction?
A. Energy is transferred when one molecule collides with another.
B. Energy is transferred when molecules absorb electromagnetic
waves.
C. Energy is transferred through moving currents of warmer air or
liquid.
D. Energy is transferred through converting bond energy to kinetic
energy
Answers
Answer:
Energy is transferred when one molecule collides with another.
Explanation:
There are 3 processes of heat transfer. They are as follows:
ConductionConvectionRadiationConduction is the process of transfer of energy through collisions between neighboring atoms or molecules. When two bodies are in direct contact with each other, the process of conduction occurs.
Hence, the correct option is (A) "Energy is transferred when one molecule collides with another".
Answer:
A. Energy is transferred when one molecule collides with another. Is the correct answer via a p e x
Explanation:
Which of the following elements has the ability to undergo sublimation
iodine
oxygen
carbon sodium
Answers
Answer:
iodine
Explanation:
Jane set up an experiment with 7 types of dog food and 15 dogs. Each day she fed a different brand of dog food to the 15 dogs. Her
results are recorded in the bar graph above.
What might be the question Jane is asking in her experiment?
A)
What dog food cost the most?
B)
Which dog food do dogs like the best?
Which dog food has the most real meat?
D)
How many dogs only like to eat in the morning?
Answers
Answer:
I believe it's either D or A I did it in my math
Potassium hydroxide is partially soluble as shown by the
following reaction:
KOH(s) K+ (aq) + OH(aq)
What is the poH of a 3.32 x 10-5 M KOH solution?
pOH =
Your answer should be rounded to three significant figures. Do not Include
units in your answer.
Answers
Answer: 4.48 or 4.47
The author wanted to revise this story to allow readers to understand more fully how Coach Wilkins felt about the banquet and his career. What change would be MOST effective? Include the point of view of the coach by adding his thoughts and dialogue. A) Remove all the details about Josh, the cafeteria workers, and Principal Edwards B) Include more information on the activities with which Coach Wilkins was involved. Change the details to have Coach Wilkins deciding to teach social studies and coach footbalL D) y Comprehension
Answers
Answer:D
Explanation:i did the usa test prep
Answer:answer is D
Explanation:
Blank O2 + blank Mg arrow blank MgO
Select the coefficients that balance the equation:
MgO *
A) 1,1,1
B) 1,2,2
C) 2,3,4
D) 1,4, 2
Answers
Answer:
its a
Explanation:
a
Use the drop-down menus to rank the boiling points of the following hydrocarbons. Use a "1" to indicate
the compound with the lowest boiling point.
Answers
Answer:
1. 4
2. 2
3. 3
4. 1
Explanation: just did it on edge 2021
Answer:
one.) 4
two.) 2
three.) 3
four.) 1
Please help ! Thanks you
Answers
Answer:
See Explanation
Explanation:
According to Avogadro's law;
V1/n1 = V2/n2
V1 = 5.0 L
n1 = 15.0 moles
V2= ?
n2 = 30.0 moles
V1n2 = V2n1
V2 = 5 * 30/15
V2 = 10 L
2) 1 mole of N2 occupies 22.4 L
3 moles of N2 occupies 3 * 22.4/1 = 67.2 L
3) 1 mole of O2 occupies 22.4 L
x moles occupies 201.6 L
x = 1 mole* 201.6 L/22.4 L
x = 9 moles
4) Density of a gas = mass/volume
Density of a gas = 39.95 g/22.4 L = 1.78 g/L
Which of the following statements describes a REACTANT and where they are
chemical equation?
The chemicals that
you begin with, found
on the right side of the
equation
The chemicals that The chemicals that The chemicals that
you begin with, found end with, found on the you enyi with, found or
on the left side of the left side of the the right side of the
equation
equation
equation
Music of
Answers
Answer: The statement, chemicals that you begin with found on the left side of the equation, describes reactant and where they are in a chemical equation.
Explanation:
An equation that includes symbolic formulas and represents chemical reaction between the substances initially present forming new substances is called a chemical equation.
For example, [tex]N_{2} + 3H_{2} \rightarrow 2NH_{3}[/tex]
Here, substances [tex]N_{2}[/tex] and [tex]H_{2}[/tex] are the reactants. Reactants in a chemical equation are always present on the left side as these are the chemicals we begin with.
Also here, [tex]NH_{3}[/tex] is the product. Product(s) in a chemical equation are always present on the right side as these are the chemicals we end with.
Thus, we can conclude that the statement, chemicals that you begin with found on the left side of the equation, describes reactant and where they are in a chemical equation.
2. What states of matter exist within the human body? What state of matter do you think your body is mostly made up of? Why? (4 points) Think about whether the body contains solids, liquids, or gases. Which of the three would you be most likely to find?
Answers
Answer:
Solids, liquids, and gases, exist in the human body. The body is mostly made up of liquid because the human body is 60% water. You would most likely be able to find solids (bones), liquids (blood, stomach acid) and gases (oxygen in your lungs or air in your digestive tract).
Explanation:
Ricky and Shemane, who are stoked to be learning stoich, were working diligently on a chemistry assignment in class. Ricky realized that in most chemical reactions, there’s an excess of one reactant. How would Shemane correctly explain to Ricky why this occurs?
the reaction will continue until all of the limiting reactant is consumed.
reactions do not take place unless there are unequal amounts of reactants.
the reaction will continue until all of the excess reactant is consumed.
reactions occur too quickly if equal amounts of reactants are used.
Answers
Part G Wavelength is the distance between the crests (tops) or the troughs (bottoms) of two waves that are next to each other. Now measure the wavelength: Click the pause button. Move the horizontal ruler so that its 0 centimeter mark is at the top of a wave. Measure the distance to the top of the next wave to find the wavelength. What's the wavelength of your wave?
Answers
Answer: 4.4
Explanation:
Thats what my computer says after i submit answer
True or False. Weather patterns in the US moves from the West to East across the
country.
Answers
Answer:
North America) than in the tropics. Since low pressure systems spin in a counterclockwise fashion, winds move from the west to the east, propelling weather systems to the east. Another MAJOR factor that drives weather systems in the U.S. is that the Jet Steam moves from West to East across North America.
Explanation:
I hope this helped
(Sorry If it didn't)
