Answer:
Respiración anaerobica
Explicación:
Las nuevas especies carecen de mitocondrias, por lo que realizan respiración anaeróbica porque en las mitocondrias solo ocurre la respiración aeróbica mientras que la respiración anaeróbica ocurre en el citoplasma de la célula. Trabajar en armonía es muy importante para el funcionamiento normal de su cuerpo. Por ejemplo, el funcionamiento combinado del sistema circulatorio y excretor. ambos sistemas hacen su trabajo mutuamente y por eso hay armonía en el cuerpo.
how does the earth rotate?
Answer:
Earth's rotation is the rotation of Planet Earth around its own axis.
Explanation:
Earth rotates eastward, in prograde motion. As viewed from the north pole star Polaris, Earth turns counterclockwise.
when The appearance of a system changes does the mass of the system also change why why not
Your question has been heard loud and clear.
Well , if youre talking about chemistry , then yes youre right , Appearance and mass are totally different concepts , appearance of any substance only depends on how the surfaces absorb and relfect light. Mass , well it is constant for a system and will never change , appearance of a system may change but not because of mass.
Thank you
what is (1.2 x 10^6 m) x ( 1.5 x 10^-7m) in scientific notation
Answer:
4.875 × 105
(scientific notation)
= 4.875e5
(scientific e notation)
= 487.5 × 103
(engineering notation)
(thousand; prefix kilo- (k))
Explanation:
This all the ways
Which of the following statements most likely
explains why Einstein thought forming a problem
is more important than solving it?
It is harder to think of a problem to solve than
to solve the actual problem.
Forming a problem requires the scientist to
use creativity to imagine new solutions.
It is hard to think of new questions to answer
because so many have already been
answered.
Scientists who are not imaginative are not
very good problem solvers.
Answer:
Forming a problem requires the scientist to use creativity to imagine new solutions.
Explanation:
Albert Einstein remains a critically prominent figure who conducted remarkable, ground-breaking research that not only formed the foundations of modern physics but also strongly affected the scientific world. It is difficult to teach imagination but it can be harnessed and accepted. Nothing incites our imaginative impulses we love more than the prospect of immediate creative inspiration. And creativity hits its full potential when paired with the experience, insights, and skills people gained by questioning the real-life problems.
Answer:
Your answer would be B, forming a problem requires the scientist to use creativity to imagine new solutions.
Explanation:
Got it right on Edge 2020. Hope this helps you!
Thanks for the help :)
1. Describe what happens when two substances at different temperatures come into contact. Describe how the law of conservation of energy applies to this system.
2. Explain how the calorimeter works, and how you can calculate the heat given off or absorbed by the reaction being studied.
3. A calorimeter contains 500 g of water at 25°C. You place a hand warmer containing 100 g of liquid sodium acetate (NaAC) inside the calorimeter. When the sodium acetate finishes crystallizing, the temperature of the water inside the calorimeter is 32.2°C. The specific heat of water is 4.18 J/g-°C. What is the enthalpy of fusion (ΔHf) of the sodium acetate? Show your work.
Thanks!
1. When two substances at different temperatures come into contact, the substance that is at higher temperature will transfer energy, to the substance at a lower temperature such that their temperature become balanced.
By the law of conservation of energy the heat released by the substance initially at a higher temperature, is the same amount of heat gained by the substance originally at a lower temperature.
2. A calorimeter contains reactants and a substance to determine the heat absorbed, or the heat capacity of materials. This is done using the following equation, Q = mcΔT, where Q = 'heat absorbed / released.'
________________________________
3. We can calculate the energy released by the sodium acetate knowing that all the heat released is absorbed by the water (Part # 1).
[tex]\mathrm{Q =\:m * c * change\:in\:temperature} ,[/tex]
[tex]\mathrm{Q =\:500 * 4.18(specific\:heat\:of\:water) * \mathrm{32.2C -25C} } ,[/tex]
[tex]\mathrm{Q} = 500 * 4.18 * (32.3 - 25) = 15257 \mathrm{J} = 15.257 \mathrm{kJ}[/tex]
Now the enthalpy of fusion is expressed in kJ/mol, so we have to first calculate the moles of sodium acetate.
moles = mass / molar mass
Remember that the molar mass of sodium acetate is 82.0343 g/mol. Therefore the moles will be 100 / 82.0343 = 1.219 mol. Respectively the enthalpy should be 15.257/1.219 = 12.516 kJ/mol.
A car is traveling at 88 ft/sec. What is the car's speed in miles/hour?
A reaction between ammonia gas and chlorine gas produces
ammonium chloride and nitrogen gas. A reaction of 17.0 g of
ammonia with 26.6 g of chlorine gas gives off 3.5 g of nitrogen.
What mass of ammonium chloride is formed in the reaction?
g
Answer:
32.25
Explanation:
8NH3 + 3Cl2 → 6NH4Cl + N2
NH3 = 17 g/mol
number of moles = 1
NH4Cl= 43 g/mol
number of moles = 3/4
mass= 43 × ¾ ≈ 32.25 g
Answer:
40.1
Explanation:
its correct your welcome
which of the following is not a rule when writing a hypothesis.
Will gift brainliest!
Is it testable
Is it a prediction
It must restate the question
It is a if/then statement
Please answer both questions.
1. An ion formed from an atom has a 1- charge. The number of electrons present in the ion is 36 and the number of neutrons is 46. Identify the element.
options: chlorine, bromine, krypton, rhodium.
2. Identify which of the following particle(s) contain more electrons than neutrons.
I. 11H
II. 35 17Cl−
III. 23 11Na+
Answer:
1)Krypton
2)11H
Explanation:
electrons=protons
protons=atomic number
mass number=protons+neutrons
mass number is the superscript
atomic number is the subscript.
1)The answer is Krypton because its atomic number= number of protons=number of electrons is 36.
mass number is 46+36=82.
2)subscript=atomic number=number of protons=number of electrons
i. H = electrons=1
=neutrons=0
ii. Cl=electrons=17
=neutrons=35-17=18
iii. Na=electrons=11
=neutrons=23-11= 12
so the answer is Hydrogen because it has 1 electron and 0 neutron.
I hope this helps.
A galaxy is a system of celestial bodies, such as stars, planets, several solar systems, and interstellar gas and dust. Our solar system is a part of a galaxy called
Answer:
The Milky Way
Explanation:
Answer:
The Milky Way
Explanation:
The symbol of the element with atomic number 114.
Answer: Fl
Explanation:
If you go onto the periodic table, you find the element that has the atomic number 114. It is located in period 7 and Group 14.
Answer:
[tex]\huge \boxed{\mathrm{Fl}}[/tex]
Explanation:
In the periodic table, the element with an atomic number of [tex]\sf 114[/tex] is Flerovium.
The symbol for the element Flerovium is [tex]\sf Fl[/tex] .
Which statement accurately describes the chemical symbol of an element?
Answer:
hello, i believe there's more information given on the question. could this be a multiple choice question? if yes please comment it below so i can further assist you.
you buy 30 g of soda that has a density of 50.0 g/mL. How many L did you buy?
Answer: 0.0006L
Explanation:
The density of a substance is given by the expression;
Density = Mass / Volume
Density = 50g/ml, Mass = 30g, Volume = ?
Making volume the subject of formular, we have; Volume = Mass / Density
∴ Volume = 30 g / 50g/ml = 0.6ml, then to Litre, we divide by 1000
The amount in Litres i bought is 0.0006L
What entropy change is associated with the reversible phase change from 1.0kg of ice to water at 0 ° C?
Answer:
1200 J/K
Explanation:
The formula for the entropy associated with a reversible phase change is
[tex]\Delta S= \dfrac{q_{\text{rev}}}{T}[/tex]
For a reversible phase change like melting,
[tex]q_{\text{rev}} = m\Delta_{\text{fus}}H[/tex]
Data:
Mass of ice = 1.0 kg
T = 0 °C
Calculations
1. Convert the mass of ice to grams
[tex]\text{Mass of ice} = \text{1.0 kg } \times \dfrac{\text{1000 g}}{\text{1 kg}} = \text{1000 g}[/tex]
2. Convert the temperature to kelvins
T = (0 + 273.15) K = 273.15 K
3. Calculate the heat needed to melt the ice
[tex]q_{\text{rev}} = m\Delta_{\text{fus}}H = \text{1000 g} \times \dfrac{\text{334 J}}{\text{1 g}} = \text{334 000 J}[/tex]
4. Calculate the entropy change
[tex]\Delta S = \dfrac{q_{\text{rev}}}{T} = \dfrac{\text{334 000 J}}{\text{273.15 K}} = \textbf{1200 J/K}[/tex]
How many significant figures are in 340500
Answer:
Five significant figures
Explanation:
You have to change the number to standard form
340500 = 3.405×10**5
** means raise to power
10**5
Where five represents the number of significant figures.
Answer:
4!
Explanation:
the atomic mass of the element cobalt is 58.933 atomic mass units. if a scientist measures the mass at 57.514 atomic mass units, what is the percent error?
Answer:
The percentage error is -2.4 %
Explanation:
The percentage error is calculated by the following formula;
[tex]Percentage \ error = \dfrac{Approximate - Exact }{Exact}[/tex]
The given parameters are;
The atomic mass of cobalt = 58.933 amu. = The exact value
The mass of cobalt as measured by the scientist = 57.514 = The approximate value
Therefore, the percentage error is given plugging in the values into the above equation for percentage error as follows;
[tex]Percentage \ error = \dfrac{(57.514- 58.933 )}{58.933 } \times 100 = -2.41\%[/tex]
The percentage error = -2.4 %.
1. Review the information in the table below. Use the information to calculate rate of how many sandwiches are made in a 10-minute period. The first calculation has been done for you.
Answer:
The answer to your question is given below.
Explanation:
Rate is simply defined as quantity per unit time. Mathematically it is represented as:
Rate = Quantity /time
Thus, we can obtain the rate as follow:
1. Quantity = 20 sandwich
Time = 10 mins
Rate =?
Rate = Quantity /time
Rate = 20/10
Rate = 2 sandwich per mins
2. Quantity = 30 sandwich
Time = 10 mins
Rate =?
Rate = Quantity /time
Rate = 30/10
Rate = 3 sandwich per mins
3. Quantity = 40 sandwich
Time = 10 mins
Rate =?
Rate = Quantity /time
Rate = 40/10
Rate = 4 sandwich per mins
4. Quantity = 50 sandwich
Time = 10 mins
Rate =?
Rate = Quantity /time
Rate = 50/10
Rate = 5 sandwich per mins
Thus, the complete table is given as follow:
Quantity >> Unit of measure >> Rate
10 >>>>>>> 10 min >>>>>>>>>> 1
20 >>>>>>> 10 min >>>>>>>>>> 2
30 >>>>>>> 10 min >>>>>>>>>> 3
40 >>>>>>> 10 min >>>>>>>>>> 4
50 >>>>>>> 10 min >>>>>>>>>> 5
If Lauren runs a 100 m race in 17.0 seconds, what is her time in minutes and how long does she run in kilometers?
Answer:
0.283 min.
0.1 km
Explanation:
Since there are 60 seconds in 1 minute, divide the time Lauren ran by 60.
17/60 = 0.283 min.
Since there are 1000 meters in 1 kilometer, divide the distance by 1000.
100/1000 = 0.1 km
About 25 of the 92 natural elements are known to be essential to life. Which four of these 25 elements make up approximately 96% of living matter
When a scientist uses reasoning to explain or interpret the things they observe
Answer:
Inferring is when a scientist uses reasoning to explain or interpret the things they observe
The study of the universe and how it
evolved is called
Answer:
this is your answer hope it helps you
If a piece of copper metal is placed in calcium chloride solution. What will you observe? Give reason for your answer.
Answer:
Explanation:
Reduction potential of Copper metal is .34 V and reduction potential of Calcium is - 2.87 V . So copper will not be able to reduce Calcium chloride to calcium . Hence no reaction will take place when a piece of copper metal is placed in calcium chloride solution .
9. What lab equipment is used to spread heat when heating to prevent glassware from cracking
breaking?
Dog a is given one cup of food. Dog b is given 1/2 cup of food . Dog.c is given two cups of food at the end of the year dog c weighs the most. What is the the independent and dependent variable
Dependent variable: Weight
Independent variable: Amount of food
Explanation:
In experiments such as the one described, there are two or more factors involved, which act as variables. Additionally, these factors can be classified as dependent or independent. The difference between these two is that the independent factor is changed on purpose by the researcher. This occurs with the amount of food as each dog receives a different amount of food and this is controlled by the researcher.
On the other hand, the dependent variable is the main factor analyzed in the experiment or the factor that is modified by the independent variable. In the experiment presented, the dependent variable is weight because in this experiment the focus is to analyze how weight changes with different amounts of food, and this factor is affected by the independent variable.
Question 3 (1 point)
There are 4 slices of pepperoni pizza, 1 slice of sausage pizza, and 3
slices of cheese pizza left. Without looking, Mr. Sanchez took his first
slice of pizza, ate it, and then took another slice. What is the
probability of getting the first slice pepperoni and the second cheese.
Answer make sure yu read bk the answer is in the question
Explanation:
Answer:
4/8 for pepperoni and 3/8 for cheese
Explanation:
Try these!
What are the lines around the nucleus called?
Answer:
am can u pliz tell me more about ur qtn
Explanation:
like a nuclear of a what
maybe a plant or and animal
Answer:
Orbiting electrons
Explanation:
At a birthday party in Phoenix, mom and dad begin inflating the balloons with helium. They both notice that the tank begins to cool down as they are inflating the balloon. Why?
Your question has been heard loud and clear.
Well , as the helium flows from tank to balloons , the helium inside the tank decreases , so air fills the remaining space inside the tank. Also , helium is stored under high pressure in the tank because , helium is lighter than air , so its molecules have high energy and this energy causes pressure which increases the temperature. Once the helium is let out , the tank cools down.
Thank you
where did the mass of the forest tress come from? What happen to that mass when the forest burns?
Answer:
The mass of the forest comes from carbon and carbon is retrieved from carbon-dioxide that trees used during the process of photosynthesis. In the process of photosynthesis, carbon-dioxide is utilised from the atmosphere by trees and release oxygen and ATP.
When the forest burns the mass again releases to atmosphere in the form of carbon which causes air pollution and increases carbon content in the atmosphere.
Which Prosthetic groups are complex nonprotein molecules that participate in catalysis by providing functional groups that form a covalent intermediate between the enzyme and the substrate. Which of the following is an example of a coenzyme or cofactor that participates in a covalent catalysis reaction?
a. Pyridoxal phosphate
b. Sodium phosphate
c. Potassium chloride
d. None of the above
Answer:
A
Explanation:
Pyridoxal phosphate is your answer
Which of these is a dependent variable in this demonstration?
A. the amount of water in the pan
B. the height of the water in the jar
C. the size of the bottle
D. the number of candles in the jar
Answer:
B). The height of the water in the jar.
Explanation:
A dependent variable is characterized as the variable that observes the change or effect caused by experimental manipulation in the independent variable. It is the variable that is being tested in the experiment. In the given experiment of the burning candle, 'the height of water in the jar' will rise or drop with manipulation in the independent variable i.e. 'the number of candles.' Since it is affected by the alteration in other variables, it is the dependent variable. Thus, option B is the correct answer.