Answer:
video and through an algebriac expression
Explanation:
Which characteristics describe bacteria
Answer:
5 simple characteristics of bacteria-
Single-Celled.
Absent Organelles.
Plasma Membrane.
Cell Walls.
DNA.
Explanation:
Describe in your own words a situation where chemical energy is transformed to potential energy.
ANSWER NOW 80 POINTS
Answer:
An important example of chemical potential energy is the energy stored in the food that you eat. Inside your body, this food is distributed around your body and is reacted in your cells to release the energy stored in the chemical bonds.
Explanation:
What errors or inherent limitations of the procedure used in this lab might have changed the amount of limonene you have calculated to be present in orange rind as compared to the amount that would actually be extracted in an industrial facility
In this experiment, errors may be due to the presence of impurities of the splashing of solutions used in the laboratory analysis.
What are errors in experiments?Experiments are often used by scientists to determine cause and effect relationships. These experiments are often not free from errors. These errors affect the quality of the results from the experiments.
In this experiment, errors may be due to the presence of impurities of the splashing of solutions used in the laboratory analysis.
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What are the two different ions present in the compound NH4NO3?
Answer:
I believe its an NH4^+ ion & an NO3^- ion
Explanation:
hope this helps!
Calculate the heat energy required to melt 4kg of ice when the specific latent heat of fusion of water is 334,000 J/kg.
1336 kJ
2336 kJ
3336 kJ
HELP ASAP
[tex]\bold{\huge{\blue{\underline{ Solution}}}}[/tex]
We have given in the question that,
4kg of ice melts at the specific latent heat of fusion of water is 334,000 J/kg .We know that,
Amount of heat required = Mass * specific heat * change in temperature
[ Specific Latent heat of fusion is the amount of heat required to change one mole of substance from solid to liquid phase without changing in temperature .]
But, For complete melting of substance without change in temperature
Amount of heat required = Mass * Specific latent heat of fusion
Subsitute the required values,
[tex]\sf{\red{ Q = MCl}}[/tex]
Where,
Q = Amount of heat required M = Mass of the substance Cl = Specific latent heatNow,
[tex]\sf{ Q = 4 × 334000}[/tex]
[tex]\sf{ Q = 1336000 J }[/tex]
[tex]\sf{ Q = 1336 KJ }[/tex]
Hence, The amount of heat required to melt 4kg ice is 1336KJ
[tex]\bold{\red{ Option\: A \:is\: correct }}[/tex]
Taking into account the definition of calorimetry and latent heat, the heat energy required to melt 4 kg of ice when the specific latent heat of fusion of water is 334,000 [tex]\frac{J}{kg}[/tex] is 1,336 kJ.
CalorimetryCalorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.
Latent heatLatent heat is defined as the energy required by a quantity of substance to change state.
When this change consists of changing from a solid to a liquid phase, it is called heat of fusion and when the change occurs from a liquid to a gaseous state, it is called heat of vaporization.
The heat Q that is necessary to provide for a mass m of a certain substance to change phase is equal to
Q = m×L
where L is called the latent heat of the substance and depends on the type of phase change.
Heat energy required to melt iceIn this case, you know:
m= 4 kgL= specific latent heat of fusion of water= 334,000 [tex]\frac{J}{kg}[/tex]Replacing in the expression for latent heat:
Q = 4 kg× 334,000 [tex]\frac{J}{kg}[/tex]
Solving:
Q= 1,336,000 J= 1,336 kJ (being 1,000 J= 1 kJ)
Finally, the correct answer is the first option: the heat energy required to melt 4 kg of ice when the specific latent heat of fusion of water is 334,000 [tex]\frac{J}{kg}[/tex] is 1,336 kJ.
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The molar mass of AI2CI6 is the mass of one mole of the compound. It is also which of the following?
A. The mass of 1 mole of AI and 1 mole of CI
B. The mass of 2 moles of AI and 6 moles CI
C. The mass of ½ mole of AI and ½ mole of CI
D. The mass of ¼ mole of AI and ¾ mole of CI
Answer:
Is their a picture with the question?
Explanation:
is soulubility maseruble physical property
List two ways you will take care of seniors, babies, family members with special needs, or pets during
an emergency
Answer:
prepare
Assemble a disaster supply kit.
Locate safe places in your home for each type of disaster.
Determine the best evacuation routes from your home.
Become trained in first aid and CPR.
Show each family member how and where to shut off utilities (water, gas, electricity).
Explanation:
In a heat engine, 700 J of heat enters the system, and the piston does 400 J of work. What is the final internal (thermal) energy of the system if the initial energy is 1200 J? 300 J 900 J 1100 J 1500 J.
The first law of thermodynamics characterises the two types of energy transfer, as heat and as thermodynamic. The final internal (thermal) energy of the system is 1,500 J.
What is internal energy?The energy present in a system itself for conducting reactions is called internal energy.
Given,
Heat entering system (Q) = 700 JWork done by the piston (W) = 400Initial energy [tex](\rm U_{1})[/tex]= 1200 JAccording to the first law of thermodynamics:
[tex]\rm Q = \Delta U + W[/tex]
Substituting values in the above equation:
[tex]\begin{aligned}\rm Q &= \rm U_{2} - U_{1} + W\\\\\rm U_{2} &= \rm Q - W + U_{1}\\\\\rm U_{2} &= 700 - 400 + 1200\\\\&= 1500 \;\rm J\end{aligned}[/tex]
Therefore, option D. 1500 J is the final energy.
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Answer: The answer would be: 1500 J
Explanation:
took the quiz
Which environmental change is considered short term? forest fire ice age mountain building solar energy changes
Answer:
Forest fire
Explanation:
Mark me as brainliest
Environmental change that is considered short term is forest fire.
What is short term environmental change?Short-term environmental change is the environmental change that occurs quickly and affects organisms. Forest fires are an example of a short- term environmental change.
Short-term changes include changes in seasonal patterns, unseasonal rainfall, changes in the life cycle of insects and animals, and so on. Long term changes examples are melting of glaciers or a rise in levels of water bodies which may cover islands close to sea level.
El Niño and La Niña are two examples of short-term climate changes lasting one to a few years. In an El Niño, the trade winds reverse direction, as do the equatorial surface currents. This causes warm water to pool off of South America and stop upwelling. A La Niña is like normal conditions only more so.
Therefore, Environmental change that is considered short term is forest fire.
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Explain how hormones control the menstrual cycle? ( 6 )
The menstrual cycle is regulated by hormones. Luteinizing hormone and follicle-stimulating hormone, which are produced by the pituitary gland, promote ovulation and stimulate the ovaries to produce estrogen and progesterone.
If you have 1.00 grams of NaHCO3 , how much IM HCI will you need to react all of the NaHCO3? Give your answer in mls.
Answer:
Here is your answer
Explanation:
Please mark me brainliest
.Each of the three resonance structures of NO3– has how many lone pairs of electrons?
Answer:
➢ There are eight lone pairs of electrons in each of the three resonance structures of NO3- ion. These eight lone pairs are provides by three oxygen atoms. There are no lone pairs on nitrogen atom.
[tex]Into \: your Arms[/tex]
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A chemist reacts sodium metal (Na) and chlorine gas (Cl) to form salt according to the balanced chemical equation: Na Cl → NaCl. If the chemist has 35. 0 g Na, what mass of chlorine must he or she use to react completely with the sodium? Finally, solve (remember significant figures):.
If the chemist has 35.0 g of Na, then 26.94 grams of chlorine is required to react completely with the sodium.
How we calculate number of moles?Number of moles of any substance can be calculated as [tex]${\rm{n = }}\frac{{\rm{W}}}{{\rm{M}}}$[/tex].
Where, W = given mass
M = molar mass
Balanced equation for the formation of NaCl can be written as:
[tex]${\rm{2N}}{{\rm{a}}_{{\rm{(s)}}}}{\rm{ + C}}{{\rm{l}}_{\rm{2}}}_{{\rm{(g)}}} \to {\rm{2NaC}}{{\rm{l}}_{{\rm{(s)}}}}$[/tex]
Here the ration of Na and Cl is 2:1.
No. of moles of Na = 35/23 = 1.52 mole
If 2 moles of Na is consumed by 1 mole of Cl, then 1 mole of Na is consumed by half mole of Cl.
Mole of Cl required to consume 1 mole of Na = 1.52/2 = 0.760 mole.
Now used mass of Cl can be find out by using the formula of moles as follow:
W = 35.45 × 0.760 = 26.94 grams
Hence, 26.94 grams of Cl is required to completely react with 35.0 grams of Na.
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Answer:
54
Explanation:
trust me its what it told me the expert verified confusing
What is carbon made up of?
Carbon atoms is made up of a nucleus of neutrons and six protons which is surrounded by six electrons.
What is Carbon?This refers to a chemical element which has an atomic number of 6 and is denoted as C. It is the major constituent of all organic substances which are present in nature.
Examples include carbohydrate, hydrocarbons etc and usually acts as the central atom in reactions.
It is made up of neutrons, six protons and six electrons thereby making it the most appropriate choice.
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SOMEONE HELP ME PLEASE
Convert the answer above to Kelvin
Answer:
293°C
Explanation:
20°C+273=293°C
How is an electromagnet similar to and different from a regular magnet?
Answer:
that the electromagnet can have a magnetic field when an electric current flows through it and disappears when the flow of the current stops, while permanent magnets are made up of magnetic material that can be easily magnetized and can create
Explanation:
At 19 °C, the vapor pressure of pure ethanol is 40.0 mmHg.
What is the pressure in atm?
atm
Answer:
0.05263158 atm
Explanation: mmHg to Atmosphere Conversion Example. Task: Convert 975 mmHg to atmospheres (show work) Formula: mmHg ÷ 760 = atm Calculations: 975 mmHg ÷ 760 = 1.28289474 atm Result: 975 mmHg is equal to 1.28289474 atm. This is an example for how i got the answer.
There can be many different colors of beetles within the same species.This is an example of
Answer:
natural selection
Explanation:
The process that results in changes to the genetic material of a population over time
What mass of water can be made from 24 grams of oxygen and 16 g of hydrogen?
H2 + O2 -> H2O
Answer:
27.025 g of H₂O
Explanation:
The Balance chemical equation is
2 H₂ + O₂ = 2 H₂O
Step 1: Calculate Limiting Reagent
Moles of H₂
Mole = 16 g / 2.02 g/mol = 7.937 mol
Moles of O₂
Mole = 24 g / 32.00 g/mol = 0.750 mol
Mole ratio of H₂ : O₂ is 2 : 1. Hence, 7.937 mol of H₂ will need 3.9685 mol of O₂. This means O₂ is limiting reagent.
Step 2: Calculate Moles of H₂O
0.750 mol of O₂ will produce 1.50 mol of H₂O because the mole ratio of O₂ : H₂O is 1 : 2.
Step 3: Calculate mass of H₂O
Mass = 1.50 mol × 18.02 g/mol = 27.025 g of H₂O
HELP PLEASE!! ASAP What would the mass be in kg?
Answer:
i guess answer is 0.0600
Explanation:
Here,
Density=0.791g/cm^3
Volume=75.89ml
So,
Mass=Density*Volume
=0.791g/cm^3×75.89ml
=60.02g/cm^3.ml
Expressing them in kg
60.02/1000
=0.0600 kg
3. An automobile tire has a pressure of 210.0 kPa at 20.0°C. What will be the
tire pressure after diving, if the tire temperature rises to 35.0°C? (221 kPa)
Answer:
answer=217.047pa
Explanation:
we apply the Gay Lussac's law "at constant volume the pressure of a fixed mass of a gas is directly proportional to kelvin temperature"
p1/t1=p2/t2
hence we can modify the equation
p2=t2*p1/t1
=210*308/298
=217.047pa
Liquids with high equilibrium vapor pressure have low _______?
Directions : Answer the following problems and show the solution
1.Calculate the speed for car that went a distance of 125 kilometers in 2-hour time
Equation (Formula) :
Plug numbers into the Equation (Substitute) :
Solution:
Final answer with unit of measure :
2.A baseball is thrown a distance of 60 meters . What is its speed if ot takes 0.5 seconds to cover the distance ?
Equation (Formula):
Plug numbers into the Equation (Substitute):
Solution:
Fina Answer with unit measure:
Correct Answer Brainliest
Wrong Answer Report
Answer:
Alb sick see dress fbcd soft comfy also could for church food collection conservatismWhat is an aquifer?
Question 2 options:
a type of surface water
pore space in the rock and soil layer beneath our feet
precipitation that soaks through the surface soil
natural underground storage area
What do you already know about fossils? Describe as much as you can in the space below.
Answer:
Fossils are remains or traces from ancient life's that is most likely buried in rocks anywhere in the world. Fossils are basically bones, teeth, shells, nests, leaf impressions, and footprints. That is technically explaining what our planet was like long ago. Some dinosaur fossils have been found. Paleontologists find them almost everywhere. If you don't know what Paleontologists are, they're basically people who study fossils. A lot of fossils are found in sedimentary rocks. Sedimentary is a rock that has been formed from things like sand, mud, and many other kinds of rocks.
Hope this helps.
Is foam a conductor or an insulator? Explain.
Answer:
Polystyrene and plastic foam are both used as insulators as they have small air bubbles trapped inside them. This makes them very good insulators because heat energy can't flow through them
Explanation:
One protein is digested by the body what molecules did they become
Calculate the number of SO2 molecules in 5.65 mol of SO2.
Answer:
[tex]3.40x10^{24}[/tex] molecules
Explanation:
[tex]\frac{5.65mol}{1} *\frac{6.02*10^{23}mlx }{1 mol}=3.4013x10^{24} mlx[/tex]
btw mlx stands for molecules and i put the answer in correct sig figs in case your teacher is like mine and wants answers in correct significant figures
Some _____ gels have fiberglass strands compounded into them during the manufacturing process. Milady